{"id":16642,"date":"2026-03-20T08:42:31","date_gmt":"2026-03-20T08:42:31","guid":{"rendered":"https:\/\/www.jet-mills.com\/?p=16642"},"modified":"2026-03-20T08:44:57","modified_gmt":"2026-03-20T08:44:57","slug":"jet-milling-peek-and-high-performance-polymer-powders","status":"publish","type":"post","link":"https:\/\/www.jet-mills.com\/vi\/jet-milling-peek-and-high-performance-polymer-powders\/","title":{"rendered":"Nghi\u1ec1n b\u1eb1ng tia kh\u00ed n\u00e9n b\u1ed9t PEEK v\u00e0 b\u1ed9t polyme hi\u1ec7u n\u0103ng cao"},"content":{"rendered":"

PEEK (polyetheretherketone) n\u00f3ng ch\u1ea3y \u1edf 343 \u0111\u1ed9 C v\u00e0 c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh l\u00e0 143 \u0111\u1ed9 C. C\u1ea3 hai con s\u1ed1 n\u00e0y \u0111\u1ec1u kh\u00f4ng ph\u1ea3i l\u00e0 ng\u01b0\u1ee1ng th\u00edch h\u1ee3p cho qu\u00e1 tr\u00ecnh nghi\u1ec1n. Ng\u01b0\u1ee1ng th\u00edch h\u1ee3p n\u1eb1m trong kho\u1ea3ng 80-100 \u0111\u1ed9 C: \u0111i\u1ec3m m\u00e0 t\u1ea1i \u0111\u00f3 hi\u1ec7n t\u01b0\u1ee3ng m\u1ec1m c\u1ee5c b\u1ed9 b\u1eaft \u0111\u1ea7u x\u1ea3y ra t\u1ea1i c\u00e1c b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac c\u1ee7a c\u00e1c h\u1ea1t d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc. N\u1ebfu \u0111\u1ea1t \u0111\u1ebfn ng\u01b0\u1ee1ng n\u00e0y trong qu\u00e1 tr\u00ecnh nghi\u1ec1n, c\u00e1c h\u1ea1t s\u1ebd h\u00e0n d\u00ednh v\u00e0o nhau thay v\u00ec b\u1ecb v\u1ee1 v\u1ee5n. K\u1ebft qu\u1ea3 l\u00e0 t\u1ea1o ra c\u00e1c c\u1ee5m h\u1ea1t, ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t r\u1ed9ng, v\u00e0 v\u1eadt li\u1ec7u kh\u00f4ng c\u00f2n ch\u1ea3y theo c\u00e1ch m\u00e0 b\u1ed9t polymer m\u1ecbn c\u1ea7n c\u00f3 cho qu\u00e1 tr\u00ecnh thi\u00eau k\u1ebft laser ho\u1eb7c gia c\u00f4ng v\u1eadt li\u1ec7u composite.<\/p>\n\n\n\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n c\u01a1 h\u1ecdc truy\u1ec1n th\u1ed1ng nh\u01b0 nghi\u1ec1n bi, nghi\u1ec1n b\u00faa v\u00e0 nghi\u1ec1n ch\u1ed1t t\u1ea1o ra nhi\u1ec7t do ma s\u00e1t v\u00e0 va \u0111\u1eadp. \u0110\u1ed1i v\u1edbi canxi cacbonat ho\u1eb7c th\u1ea1ch anh, nhi\u1ec7t l\u01b0\u1ee3ng \u0111\u00f3 c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. Nh\u01b0ng \u0111\u1ed1i v\u1edbi PEEK, \u0111\u00f3 l\u1ea1i l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y h\u01b0 h\u1ecfng. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao phay ph\u1ea3n l\u1ef1c<\/a> \u0110\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u1ec3 s\u1ea3n xu\u1ea5t b\u1ed9t PEEK si\u00eau m\u1ecbn. C\u01a1 ch\u1ebf nghi\u1ec1n l\u00e0 s\u1ef1 va ch\u1ea1m gi\u1eefa c\u00e1c h\u1ea1t v\u1edbi nhau \u0111\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi c\u00e1c lu\u1ed3ng kh\u00ed t\u1ed1c \u0111\u1ed9 cao, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 va ch\u1ea1m kim lo\u1ea1i v\u1edbi kim lo\u1ea1i. Kh\u00ed gi\u00e3n n\u1edf s\u1ebd ngu\u1ed9i \u0111i khi tho\u00e1t ra kh\u1ecfi v\u00f2i phun. V\u00f9ng nghi\u1ec1n lu\u00f4n gi\u1eef \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. PEEK b\u1ecb v\u1ee1 m\u1ed9t c\u00e1ch g\u1ecdn g\u00e0ng thay v\u00ec b\u1ecb m\u1ec1m \u0111i.<\/p>\n\n\n\n

B\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n b\u1eb1ng tia kh\u00ed \u0111\u1ed1i v\u1edbi c\u00e1c polyme hi\u1ec7u n\u0103ng cao, c\u1ee5 th\u1ec3 l\u00e0 c\u00e1ch thi\u1ebft l\u1eadp th\u00f4ng s\u1ed1 cho PEEK, k\u00edch th\u01b0\u1edbc h\u1ea1t m\u1ee5c ti\u00eau kh\u1ea3 thi v\u00e0 th\u1ef1c t\u1ebf cho t\u1eebng \u1ee9ng d\u1ee5ng, v\u00e0 so s\u00e1nh c\u00f4ng ngh\u1ec7 n\u00e0y v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf kh\u00e1c, bao g\u1ed3m c\u1ea3 ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n b\u1eb1ng kh\u00ed l\u1ea1nh. B\u1ed9t EPIC<\/a> C\u00f4ng ty Machinery cung c\u1ea5p m\u00e1y nghi\u1ec1n phun t\u1ea7ng s\u00f4i cho c\u00e1c \u1ee9ng d\u1ee5ng PEEK, PTFE, polyimide v\u00e0 c\u00e1c lo\u1ea1i polymer k\u1ef9 thu\u1eadt kh\u00e1c.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

V\u00ec sao PEEK kh\u00f3 nghi\u1ec1n \u2014 v\u00e0 nh\u1eefng \u0111i\u1ec3m y\u1ebfu c\u1ee7a c\u00e1c m\u00e1y nghi\u1ec1n th\u00f4ng th\u01b0\u1eddng.<\/h2>\n\n\n\n

H\u1ea7u h\u1ebft c\u00e1c v\u1eadt li\u1ec7u c\u1ee9ng \u2014 kho\u00e1ng ch\u1ea5t, g\u1ed1m s\u1ee9, kim lo\u1ea1i \u2014 \u0111\u1ec1u gi\u00f2n theo ngh\u0129a l\u00e0 ch\u00fang b\u1ecb v\u1ee1 d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c va \u0111\u1eadp m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng d\u1ebbo \u0111\u00e1ng k\u1ec3. \u00c1p d\u1ee5ng \u1ee9ng su\u1ea5t v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec3m ch\u1ea3y s\u1ebd g\u00e2y ra s\u1ef1 lan truy\u1ec1n v\u1ebft n\u1ee9t, l\u00e0m gi\u1ea3m k\u00edch th\u01b0\u1edbc h\u1ea1t. PEEK th\u00ec kh\u00f4ng nh\u01b0 v\u1eady. N\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo b\u00e1n tinh th\u1ec3: n\u00f3 c\u00f3 c\u1ea3 c\u00e1c v\u00f9ng v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i nh\u1edbt v\u00e0 c\u00e1c v\u00f9ng tinh th\u1ec3 c\u1ee9ng h\u01a1n v\u00e0 gi\u00f2n h\u01a1n. D\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u01a1 h\u1ecdc, c\u00e1c v\u00f9ng v\u00f4 \u0111\u1ecbnh h\u00ecnh h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng th\u00f4ng qua bi\u1ebfn d\u1ea1ng d\u1ebbo thay v\u00ec b\u1ecb v\u1ee1. K\u1ebft qu\u1ea3 l\u00e0 PEEK ti\u00eau t\u00e1n n\u0103ng l\u01b0\u1ee3ng m\u00e0i m\u00f2n thay v\u00ec chuy\u1ec3n h\u00f3a n\u00f3 th\u00e0nh c\u00e1c b\u1ec1 m\u1eb7t h\u1ea1t m\u1edbi.<\/p>\n\n\n\n

Ba v\u1ea5n \u0111\u1ec1 c\u1ee5 th\u1ec3 ph\u00e1t sinh khi nghi\u1ec1n PEEK trong c\u00e1c m\u00e1y nghi\u1ec1n c\u01a1 kh\u00ed th\u00f4ng th\u01b0\u1eddng:<\/p>\n\n\n\n

    \n
  • S\u1ef1 k\u1ebft t\u1ee5 do nhi\u1ec7t: <\/strong>N\u0103ng l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 ph\u00e1 v\u1ee1 c\u00e1c h\u1ea1t s\u1ebd chuy\u1ec3n h\u00f3a th\u00e0nh nhi\u1ec7t t\u1ea1i \u0111i\u1ec3m ti\u1ebfp x\u00fac. Nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee5c b\u1ed9 cao h\u01a1n nhi\u1ec1u so v\u1edbi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh va ch\u1ea1m t\u1ed1c \u0111\u1ed9 cao. B\u1ec1 m\u1eb7t c\u00e1c h\u1ea1t b\u1ecb m\u1ec1m s\u1ebd h\u00e0n d\u00ednh l\u1ea1i v\u1edbi nhau, t\u1ea1o th\u00e0nh c\u00e1c kh\u1ed1i k\u1ebft t\u1ee5 l\u1edbn h\u01a1n k\u00edch th\u01b0\u1edbc ban \u0111\u1ea7u \u2014 m\u00e1y nghi\u1ec1n \u0111ang l\u00e0m cho b\u1ed9t th\u00f4 h\u01a1n ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ecbn h\u01a1n.<\/li>\n\n\n\n
  • \u00d4 nhi\u1ec5m kim lo\u1ea1i: <\/strong>PEEK \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea5y gh\u00e9p y t\u1ebf, c\u1ea5u tr\u00fac h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 linh ki\u1ec7n b\u00e1n d\u1eabn, n\u01a1i m\u00e0 s\u1ef1 nhi\u1ec5m b\u1ea9n ion kim lo\u1ea1i \u1edf m\u1ee9c ppm l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u00e1ng quan t\u00e2m. B\u1ec1 m\u1eb7t m\u00e0i b\u1eb1ng th\u00e9p ho\u1eb7c s\u1eaft t\u00f4i c\u1ee9ng b\u1ecb m\u00e0i m\u00f2n \u0111\u00e1ng k\u1ec3 khi gia c\u00f4ng c\u00e1c polyme c\u1ee9ng. S\u1ef1 nhi\u1ec5m b\u1ea9n n\u00e0y c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi ch\u1ea5t \u0111\u1ed9n c\u00f4ng nghi\u1ec7p nh\u01b0ng kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi b\u1ed9t PEEK d\u00f9ng trong y t\u1ebf ho\u1eb7c \u0111i\u1ec7n t\u1eed.<\/li>\n\n\n\n
  • PSD r\u1ed9ng, kh\u00f4ng th\u1ec3 ki\u1ec3m so\u00e1t: <\/strong>Do m\u1ed9t ph\u1ea7n nguy\u00ean li\u1ec7u PEEK k\u1ebft t\u1ee5 l\u1ea1i thay v\u00ec v\u1ee1 v\u1ee5n, s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t t\u0103ng d\u1ea7n trong qu\u00e1 tr\u00ecnh nghi\u1ec1n. K\u00edch th\u01b0\u1edbc h\u1ea1t D97 t\u0103ng l\u00ean trong khi D50 ch\u1ec9 gi\u1ea3m d\u1ea7n m\u1ed9t c\u00e1ch ch\u1eadm ch\u1ea1p. K\u1ebft qu\u1ea3 l\u00e0 s\u1ea3n ph\u1ea9m kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) nghi\u00eam ng\u1eb7t c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh thi\u00eau k\u1ebft laser ho\u1eb7c s\u1ea3n xu\u1ea5t c\u1ea5y gh\u00e9p.<\/li>\n<\/ul>\n\n\n\n

    L\u00e0m th\u1ebf n\u00e0o ph\u01b0\u01a1ng ph\u00e1p phay tia n\u01b0\u1edbc gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1 m\u00e0i PEEK?<\/h2>\n\n\n\n

    Hi\u1ec7u \u1ee9ng Joule-Thomson: T\u1ea1i sao v\u00f9ng m\u00e0i v\u1eabn l\u1ea1nh<\/h3>\n\n\n\n

    Trong m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n t\u1ea7ng s\u00f4i, kh\u00ed n\u00e9n (kh\u00f4ng kh\u00ed ho\u1eb7c nit\u01a1) \u0111\u01b0\u1ee3c d\u1eabn v\u00e0o c\u00e1c v\u00f2i phun \u1edf \u00e1p su\u1ea5t 4-8 bar v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ebfn v\u1eadn t\u1ed1c si\u00eau \u00e2m khi tho\u00e1t ra. Khi kh\u00ed \u00e1p su\u1ea5t cao gi\u00e3n n\u1edf nhanh qua v\u00f2i phun, n\u00f3 s\u1ebd ngu\u1ed9i \u0111i \u2014 \u0111\u00e2y l\u00e0 hi\u1ec7u \u1ee9ng Joule-Thomson. \u1ede \u00e1p su\u1ea5t nghi\u1ec1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho PEEK, nhi\u1ec7t \u0111\u1ed9 kh\u00ed t\u1ea1i c\u1eeda ra c\u1ee7a v\u00f2i phun gi\u1ea3m xu\u1ed1ng c\u00f2n 0 \u0111\u1ebfn -20 \u0111\u1ed9 C. V\u00f9ng nghi\u1ec1n, \u0111\u01b0\u1ee3c duy tr\u00ec b\u1edfi d\u00f2ng kh\u00ed l\u1ea1nh li\u00ean t\u1ee5c n\u00e0y, lu\u00f4n gi\u1eef nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi nhi\u1ec7t \u0111\u1ed9 m\u00e0 b\u1ec1 m\u1eb7t PEEK b\u1eaft \u0111\u1ea7u m\u1ec1m ra.<\/p>\n\n\n\n

    K\u1ebft qu\u1ea3 th\u1ef1c ti\u1ec5n: C\u00e1c h\u1ea1t PEEK va ch\u1ea1m \u1edf v\u1eadn t\u1ed1c cao v\u00e0 b\u1ecb v\u1ee1 thay v\u00ec bi\u1ebfn d\u1ea1ng. V\u00f9ng m\u00e0i ngu\u1ed9i c\u0169ng ng\u0103n ng\u1eeba s\u1ef1 v\u00f3n c\u1ee5c \u2014 c\u00e1c h\u1ea1t v\u1ed1n \u0111\u00e3 m\u1ecbn v\u00e0 c\u00f3 xu h\u01b0\u1edbng d\u00ednh v\u00e0o nhau \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u1eabn t\u00e1ch bi\u1ec7t trong lu\u1ed3ng kh\u00ed l\u1ea1nh, h\u1ed7n lo\u1ea1n. \u0110\u1ed9 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) c\u1ee7a s\u1ea3n ph\u1ea9m ch\u1eb7t ch\u1ebd h\u01a1n b\u1ea5t k\u1ef3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0o c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch m\u00e0i c\u01a1 h\u1ecdc \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng \u0111\u1ed1i v\u1edbi c\u00f9ng m\u1ed9t v\u1eadt li\u1ec7u.<\/p>\n\n\n\n

    Nghi\u1ec1n h\u1ea1t tr\u00ean h\u1ea1t: Kh\u00f4ng ti\u1ebfp x\u00fac kim lo\u1ea1i<\/h3>\n\n\n\n

    C\u01a1 ch\u1ebf gi\u1ea3m k\u00edch th\u01b0\u1edbc trong m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n ho\u00e0n to\u00e0n d\u1ef1a tr\u00ean s\u1ef1 va ch\u1ea1m gi\u1eefa c\u00e1c h\u1ea1t. C\u00e1c lu\u1ed3ng kh\u00ed t\u0103ng t\u1ed1c c\u00e1c h\u1ea1t PEEK th\u00e0nh c\u00e1c d\u00f2ng h\u1ed9i t\u1ee5, n\u01a1i ch\u00fang va ch\u1ea1m v\u1edbi nhau. C\u00e1c b\u1ec1 m\u1eb7t r\u1eafn duy nh\u1ea5t ti\u1ebfp x\u00fac v\u1edbi s\u1ea3n ph\u1ea9m l\u00e0 th\u00e0nh bu\u1ed3ng nghi\u1ec1n, b\u00e1nh xe ph\u00e2n lo\u1ea1i v\u00e0 c\u1ee5m v\u00f2i phun \u2014 kh\u00f4ng c\u00f3 b\u1ec1 m\u1eb7t n\u00e0o n\u1eb1m trong v\u00f9ng va ch\u1ea1m n\u0103ng l\u01b0\u1ee3ng cao. Trong c\u1ea5u h\u00ecnh l\u00f3t g\u1ed1m, kh\u00f4ng c\u00f3 s\u1ef1 ti\u1ebfp x\u00fac kim lo\u1ea1i n\u00e0o v\u1edbi s\u1ea3n ph\u1ea9m t\u1ea1i b\u1ea5t k\u1ef3 \u0111i\u1ec3m n\u00e0o trong chu tr\u00ecnh.<\/p>\n\n\n\n

    \u0110\u1ed1i v\u1edbi b\u1ed9t PEEK d\u00f9ng trong y t\u1ebf \u2014 lo\u1ea1i b\u1ed9t cu\u1ed1i c\u00f9ng s\u1ebd \u0111\u01b0\u1ee3c c\u1ea5y gh\u00e9p v\u00e0o b\u1ec7nh nh\u00e2n ho\u1eb7c s\u1eed d\u1ee5ng trong thi\u1ebft b\u1ecb can thi\u1ec7p \u2014 vi\u1ec7c kh\u00f4ng c\u00f3 t\u1ea1p ch\u1ea5t kim lo\u1ea1i l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c. Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc c\u1ee7a PEEK ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c kh\u00f4ng c\u00f3 Fe, Cr, Ni v\u00e0 c\u00e1c ion kim lo\u1ea1i kh\u00e1c m\u00e0 b\u1ec1 m\u1eb7t m\u00e1y nghi\u1ec1n phun ph\u1ee7 g\u1ed1m ho\u1eb7c polymer kh\u00f4ng th\u1ec3 \u0111\u01b0a v\u00e0o.<\/p>\n\n\n\n

    Ph\u00e2n lo\u1ea1i t\u00edch h\u1ee3p: C\u1ea3 D97 v\u00e0 D50 \u0111\u1ec1u c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c.<\/h3>\n\n\n\n

    M\u00e1y nghi\u1ec1n t\u1ea7ng s\u00f4i d\u1ea1ng tia c\u00f3 t\u00edch h\u1ee3p b\u00e1nh xe ph\u00e2n lo\u1ea1i \u0111\u1ed9ng. C\u00e1c h\u1ea1t m\u1ecbn \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n k\u00edch th\u01b0\u1edbc s\u1ebd \u0111i qua b\u00e1nh xe v\u00e0 tho\u00e1t ra h\u1ec7 th\u1ed1ng thu gom s\u1ea3n ph\u1ea9m. C\u00e1c h\u1ea1t qu\u00e1 c\u1ee1 s\u1ebd \u0111\u01b0\u1ee3c ly t\u00e2m \u0111\u01b0a tr\u1edf l\u1ea1i v\u00f9ng nghi\u1ec1n. T\u1ed1c \u0111\u1ed9 quay c\u1ee7a b\u00e1nh xe ph\u00e2n lo\u1ea1i l\u00e0 bi\u1ebfn s\u1ed1 \u0111i\u1ec1u khi\u1ec3n ch\u00ednh \u0111\u1ed1i v\u1edbi D50 \u2014 t\u1ed1c \u0111\u1ed9 c\u00e0ng cao th\u00ec s\u1ea3n ph\u1ea9m c\u00e0ng m\u1ecbn. \u00c1p su\u1ea5t kh\u00ed nghi\u1ec1n v\u00e0 t\u1ed1c \u0111\u1ed9 c\u1ea5p li\u1ec7u l\u00e0 c\u00e1c bi\u1ebfn s\u1ed1 th\u1ee9 c\u1ea5p \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn n\u0103ng su\u1ea5t v\u00e0 h\u00ecnh d\u1ea1ng ph\u00e2n b\u1ed1 s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n

    Thi\u1ebft k\u1ebf kh\u00e9p k\u00edn n\u00e0y c\u00f3 ngh\u0129a l\u00e0 b\u1ed9t PEEK kh\u00f4ng b\u1ecb l\u01b0u l\u1ea1i trong m\u00e1y nghi\u1ec1n qu\u00e1 th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u00edch th\u01b0\u1edbc m\u1ee5c ti\u00eau. C\u00e1c h\u1ea1t s\u1ebd tho\u00e1t ra ngay khi ch\u00fang \u0111\u1ee7 m\u1ecbn. Kh\u00f4ng c\u00f3 s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t d\u1ea7n d\u1ea7n do qu\u00e1 tr\u00ecnh nghi\u1ec1n k\u00e9o d\u00e0i, v\u00e0 kh\u00f4ng c\u00f3 h\u1ea1t n\u00e0o b\u1ecb nghi\u1ec1n qu\u00e1 m\u1ee9c v\u00ec b\u01b0\u1edbc ph\u00e2n lo\u1ea1i lo\u1ea1i b\u1ecf ch\u00fang ngay l\u1eadp t\u1ee9c khi ch\u00fang \u0111\u1ea1t \u0111\u1ebfn k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n

    Y\u00eau c\u1ea7u v\u1ec1 k\u00edch th\u01b0\u1edbc h\u1ea1t theo \u1ee9ng d\u1ee5ng \u2014 \u0110i\u1ec1u g\u00ec th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c<\/h2>\n\n\n\n

    B\u1ea3n \u0111\u1ec1 c\u01b0\u01a1ng g\u1ed1c c\u00f3 m\u1ed9t l\u1ed7i sai v\u1ec1 m\u1eb7t th\u1ef1c t\u1ebf c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m r\u00f5 ngay: n\u00f3 m\u00f4 t\u1ea3 D50 kho\u1ea3ng 45 \u03bcm l\u00e0 "si\u00eau m\u1ecbn" \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh thi\u00eau k\u1ebft b\u1eb1ng laser, trong khi l\u1ea1i \u0111\u1ecbnh ngh\u0129a si\u00eau m\u1ecbn l\u00e0 d\u01b0\u1edbi 10 \u03bcm trong c\u00f9ng b\u00e0i b\u00e1o \u0111\u00f3. \u0110\u00e2y l\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng kh\u00e1c nhau \u0111\u00f2i h\u1ecfi k\u00edch th\u01b0\u1edbc h\u1ea1t kh\u00e1c nhau. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y th\u1ec3 hi\u1ec7n c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c.<\/p>\n\n\n\n

    \u1ee8ng d\u1ee5ng<\/strong><\/td>M\u1ee5c ti\u00eau D50 \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>M\u1ee5c ti\u00eau D97 \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>T\u1ea1i sao l\u1ea1i c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t n\u00e0y?<\/strong><\/td><\/tr>
    C\u00f4ng ngh\u1ec7 thi\u00eau k\u1ebft laser \/ In 3D SLS<\/td>45-90 \u00b5m<\/td><120 \u00b5m<\/td>B\u1ed9t ph\u1ea3i ch\u1ea3y v\u00e0 \u0111\u00f3ng g\u00f3i \u0111\u1ed3ng \u0111\u1ec1u trong l\u1edbp b\u1ed9t; b\u1ed9t qu\u00e1 m\u1ecbn s\u1ebd g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ch\u1ea3y k\u00e9m.<\/td><\/tr>
    S\u1ef1 t\u1ea9m \u01b0\u1edbt h\u1ed7n h\u1ee3p polyme<\/td>5-15 \u00b5m<\/td><30 um<\/td>B\u1ed9t m\u1ecbn gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng th\u1ea5m \u01b0\u1edbt s\u1ee3i v\u00e0 gi\u1ea3m thi\u1ec3u l\u1ed7 r\u1ed7ng trong c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u composite v\u00e0 qu\u1ea5n s\u1ee3i.<\/td><\/tr>
    L\u1edbp ph\u1ee7 v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/td>3-10 \u00b5m<\/td><20 \u00b5m<\/td>K\u00edch th\u01b0\u1edbc h\u1ea1t m\u1ecbn gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a l\u1edbp ph\u1ee7 v\u00e0 gi\u1ea3m \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t.<\/td><\/tr>
    S\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb c\u1ea5y gh\u00e9p y t\u1ebf<\/td>1-5 \u00b5m<\/td><15 \u00b5m<\/td>B\u1ed9t m\u1ecbn cho ph\u00e9p \u00e9p \u0111\u1ecbnh h\u00ecnh g\u1ea7n nh\u01b0 ho\u00e0n ch\u1ec9nh; di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t h\u1ed7 tr\u1ee3 vi\u1ec7c gh\u00e9p c\u00e1c ph\u00e2n t\u1eed ho\u1ea1t t\u00ednh sinh h\u1ecdc.<\/td><\/tr>
    Ph\u1ee5 gia ma s\u00e1t (ch\u1ea5t \u0111\u1ed9n b\u00f4i tr\u01a1n)<\/td>1-5 \u00b5m<\/td><10 \u00b5m<\/td>B\u1ed9t si\u00eau m\u1ecbn ph\u00e2n t\u00e1n trong ch\u1ea5t b\u00f4i tr\u01a1n ho\u1eb7c ma tr\u1eadn polyme m\u00e0 kh\u00f4ng b\u1ecb v\u00f3n c\u1ee5c.<\/td><\/tr>
    C\u00e1c th\u00e0nh ph\u1ea7n m\u00e0ng v\u00e0 l\u1ecdc<\/td><3 um<\/td><8 um<\/td>B\u1ed9t m\u1ecbn, \u0111\u1ed3ng nh\u1ea5t cho ph\u00e9p ki\u1ec3m so\u00e1t \u0111\u1ed9 x\u1ed1p trong c\u1ea5u tr\u00fac m\u00e0ng PEEK thi\u00eau k\u1ebft.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    L\u01b0u \u00fd: B\u1ed9t PEEK thi\u00eau k\u1ebft laser (D50 45-90 \u00b5m) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n l\u1ea1nh ho\u1eb7c k\u1ebft t\u1ee7a h\u00f2a tan thay v\u00ec nghi\u1ec1n b\u1eb1ng tia kh\u00ed. Nghi\u1ec1n b\u1eb1ng tia kh\u00ed l\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn cho PEEK m\u1ecbn v\u00e0 si\u00eau m\u1ecbn (D50 d\u01b0\u1edbi 15 \u00b5m). C\u00f4ng ngh\u1ec7 ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a \u1ee9ng d\u1ee5ng.<\/em><\/p>\n\n\n\n

    So s\u00e1nh gi\u1eefa ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n b\u1eb1ng tia kh\u00ed, nghi\u1ec1n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh v\u00e0 nghi\u1ec1n c\u01a1 h\u1ecdc \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u PEEK.<\/h2>\n\n\n\n

    C\u00f3 ba c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 s\u1ea3n xu\u1ea5t b\u1ed9t PEEK. M\u1ed7i c\u00f4ng ngh\u1ec7 \u0111\u1ec1u c\u00f3 m\u1ed9t ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t t\u1ed1i \u01b0u ri\u00eang. Hi\u1ec3u r\u00f5 nh\u1eefng \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a t\u1eebng c\u00f4ng ngh\u1ec7 s\u1ebd gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn quy tr\u00ecnh ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n

    Nh\u00e2n t\u1ed1<\/strong><\/td>phay ph\u1ea3n l\u1ef1c<\/strong><\/td>Nghi\u1ec1n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh<\/strong><\/td>Gia c\u00f4ng c\u01a1 kh\u00ed (nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng)<\/strong><\/td><\/tr>
    \u0110\u1ed9 ph\u00e2n gi\u1ea3i t\u1ed1t nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c D50<\/td>0,5-5 \u00b5m (gi\u1edbi h\u1ea1n d\u01b0\u1edbi th\u1ef1c t\u1ebf)<\/td>20-60 \u00b5m<\/td>30-100 \u00b5m (c\u00f3 v\u1ea5n \u0111\u1ec1 v\u1ec1 s\u1ef1 k\u1ebft t\u1ee5)<\/td><\/tr>
    D\u1ea3i D50 t\u1ed1t nh\u1ea5t cho PEEK<\/td>1-15 \u00b5m<\/td>40-100 \u00b5m (ph\u1ea1m vi b\u1ed9t SLS)<\/td>Kh\u00f4ng khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng cho PEEK.<\/td><\/tr>
    R\u1ee7i ro suy tho\u00e1i nhi\u1ec7t<\/td>Kh\u00f4ng c\u00f3 (l\u00e0m m\u00e1t b\u1eb1ng gi\u00e3n n\u1edf kh\u00ed)<\/td>Kh\u00f4ng c\u00f3 (hi\u1ec7n t\u01b0\u1ee3ng gi\u00f2n do LN2)<\/td>Nhi\u1ec7t \u0111\u1ed9 cao (hi\u1ec7n t\u01b0\u1ee3ng n\u00f3ng c\u1ee5c b\u1ed9 khi va ch\u1ea1m)<\/td><\/tr>
    nguy c\u01a1 \u00f4 nhi\u1ec5m kim lo\u1ea1i<\/td>G\u1ea7n b\u1eb1ng kh\u00f4ng (b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac b\u1eb1ng g\u1ed1m)<\/td>Nhi\u1ec7t \u0111\u1ed9 th\u1ea5p-trung b\u00ecnh (b\u1ec1 m\u1eb7t nh\u00e0 m\u00e1y th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p)<\/td>Cao (th\u00e9p b\u1ecb m\u00e0i m\u00f2n \u1edf nhi\u1ec7t \u0111\u1ed9 cao)<\/td><\/tr>
    Ki\u1ec3m so\u00e1t PSD<\/td>Xu\u1ea5t s\u1eafc (b\u1ed9 ph\u00e2n lo\u1ea1i c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh)<\/td>M\u1ee9c \u0111\u1ed9 v\u1eeba ph\u1ea3i (kho\u1ea3ng c\u00e1ch an to\u00e0n d\u1ef1a tr\u00ean m\u00e0n h\u00ecnh)<\/td>Ngh\u00e8o (s\u1ef1 t\u1eadp trung d\u00e2n c\u01b0 l\u00e0m sai l\u1ec7ch s\u1ef1 ph\u00e2n b\u1ed1)<\/td><\/tr>
    H\u00ecnh th\u00e1i h\u1ea1t<\/td>T\u1eeb d\u1ea1ng g\u00f3c c\u1ea1nh \u0111\u1ebfn d\u1ea1ng b\u00e1n c\u1ea7u<\/td>G\u00e3y x\u01b0\u01a1ng kh\u00f4ng \u0111\u1ec1u, th\u01b0\u1eddng l\u00e0 g\u00e3y x\u01b0\u01a1ng d\u1ea1ng phi\u1ebfn<\/td>H\u00ecnh d\u1ea1ng b\u1ea5t th\u01b0\u1eddng, th\u01b0\u1eddng thu\u00f4n d\u00e0i.<\/td><\/tr>
    Chi ph\u00ed v\u1eadn h\u00e0nh tr\u00ean m\u1ed7i t\u1ea5n<\/td>Cao (n\u0103ng l\u01b0\u1ee3ng kh\u00ed n\u00e9n)<\/td>M\u1ee9c ti\u00eau th\u1ee5 nit\u01a1 l\u1ecfng (LN2) trung b\u00ecnh-cao<\/td>Th\u1ea5p (nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m h\u1ea1n ch\u1ebf t\u00ednh \u00e1p d\u1ee5ng)<\/td><\/tr>
    T\u1ed1t nh\u1ea5t cho<\/td>V\u1eadt li\u1ec7u y t\u1ebf, v\u1eadt li\u1ec7u composite, l\u1edbp ph\u1ee7 (D50 <15 \u00b5m)<\/td>B\u1ed9t in 3D SLS (D50 40-90 \u00b5m)<\/td>Ch\u1ec9 d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, kh\u00f4ng quan tr\u1ecdng.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    C\u00e1c th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh c\u1ee7a PEEK tr\u00ean m\u00e1y nghi\u1ec1n phun t\u1ea7ng s\u00f4i.<\/h2>\n\n\n\n

    PEEK c\u00f3 \u0111\u1eb7c t\u00ednh kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kho\u00e1ng trong m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n v\u00ec m\u1eadt \u0111\u1ed9 c\u1ee7a n\u00f3 th\u1ea5p h\u01a1n nhi\u1ec1u (1,26-1,32 g\/cm\u00b3 so v\u1edbi 2,7 g\/cm\u00b3 c\u1ee7a alumina) v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a n\u00f3 ch\u1ed1ng l\u1ea1i s\u1ef1 n\u1ee9t v\u1ee1 cho \u0111\u1ebfn khi n\u0103ng l\u01b0\u1ee3ng va ch\u1ea1m \u0111\u1ee7 l\u1edbn \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng. C\u00e1c ph\u1ea1m vi th\u00f4ng s\u1ed1 sau \u0111\u00e2y l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho PEEK tr\u00ean m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n t\u1ea7ng s\u00f4i ti\u00eau chu\u1ea9n \u2014 h\u00e3y x\u00e1c nh\u1eadn b\u1eb1ng c\u00e1ch th\u1eed nghi\u1ec7m nghi\u1ec1n v\u1edbi lo\u1ea1i PEEK c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

    Tham s\u1ed1<\/strong><\/td>Ph\u1ea1m vi \u0111i\u1ec3n h\u00ecnh cho PEEK<\/strong><\/td>\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ea3n ph\u1ea9m<\/strong><\/td>Ghi ch\u00fa<\/strong><\/td><\/tr>
    \u00c1p su\u1ea5t kh\u00ed nghi\u1ec1n<\/td>5-8 bar<\/td>\u00c1p su\u1ea5t cao h\u01a1n l\u00e0m t\u0103ng v\u1eadn t\u1ed1c va ch\u1ea1m c\u1ee7a c\u00e1c h\u1ea1t \u2014 \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c polyme b\u1ec1n ch\u1eafc. \u1ede \u00e1p su\u1ea5t d\u01b0\u1edbi 5 bar, PEEK kh\u00f4ng b\u1ecb v\u1ee1 hi\u1ec7u qu\u1ea3.<\/td>B\u1eaft \u0111\u1ea7u v\u1edbi 6 v\u1ea1ch v\u00e0 \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a tr\u00ean k\u1ebft qu\u1ea3 PSD.<\/td><\/tr>
    T\u1ed1c \u0111\u1ed9 b\u00e1nh xe ph\u00e2n lo\u1ea1i<\/td>2.000-8.000 v\u00f2ng\/ph\u00fat (t\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc m\u00e1y nghi\u1ec1n)<\/td>\u0110i\u1ec1u khi\u1ec3n D50 ch\u00ednh. T\u1ed1c \u0111\u1ed9 c\u00e0ng cao = s\u1ea3n ph\u1ea9m c\u00e0ng m\u1ecbn.<\/td>T\u0103ng t\u1ed1c \u0111\u1ed9 quay theo t\u1eebng b\u01b0\u1edbc 500 v\u00f2ng\/ph\u00fat; l\u1ea5y m\u1eabu v\u00e0 \u0111o PSD sau m\u1ed7i l\u1ea7n thay \u0111\u1ed5i.<\/td><\/tr>
    T\u1ef7 l\u1ec7 th\u1ee9c \u0103n<\/td>M\u1ee9c th\u1ea5p \u0111\u1ebfn trung b\u00ecnh (th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi t\u1ef7 l\u1ec7 nguy\u00ean li\u1ec7u kho\u00e1ng cho nh\u00e0 m\u00e1y c\u00f3 quy m\u00f4 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)<\/td>T\u1ed1c \u0111\u1ed9 c\u1ea5p li\u1ec7u cao h\u01a1n l\u00e0m t\u0103ng n\u1ed3ng \u0111\u1ed9 h\u1ea1t, l\u00e0m cho \u0111i\u1ec3m c\u1eaft h\u01a1i th\u00f4 h\u01a1n. T\u1ed1c \u0111\u1ed9 c\u1ea5p li\u1ec7u PEEK n\u00ean l\u00e0 40-60% so v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ea5p li\u1ec7u kho\u00e1ng ch\u1ea5t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/td>S\u1eed d\u1ee5ng b\u1ed9 c\u1ea5p li\u1ec7u rung ho\u1eb7c v\u00edt t\u1ea3i c\u00f3 ki\u1ec3m so\u00e1t; t\u1ed1c \u0111\u1ed9 c\u1ea5p li\u1ec7u kh\u00f4ng \u1ed5n \u0111\u1ecbnh s\u1ebd l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc h\u1ea1t ph\u00e2n t\u00e1n (PSD).<\/td><\/tr>
    Lo\u1ea1i kh\u00ed<\/td>Kh\u00ed n\u00e9n kh\u00f4 (ti\u00eau chu\u1ea9n); nit\u01a1 (lo\u1ea1i d\u00f9ng trong y t\u1ebf\/h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5)<\/td>Nit\u01a1 ng\u0103n ng\u1eeba qu\u00e1 tr\u00ecnh oxy h\u00f3a b\u1ec1 m\u1eb7t polyme trong \u0111i\u1ec1u ki\u1ec7n m\u00e0i. C\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng y t\u1ebf.<\/td>Theo d\u00f5i \u0111i\u1ec3m ng\u01b0ng t\u1ee5 c\u1ee7a kh\u00ed \u2014 h\u01a1i \u1ea9m g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng k\u1ebft t\u1ee5 t\u0129nh \u0111i\u1ec7n c\u1ee7a b\u1ed9t PEEK m\u1ecbn.<\/td><\/tr>
    K\u00edch th\u01b0\u1edbc th\u1ee9c \u0103n<\/td>Th\u00f4ng th\u01b0\u1eddng l\u00e0 c\u00e1c h\u1ea1t nh\u1ecf h\u01a1n 3 mm ho\u1eb7c PEEK \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u1ec1n s\u1eb5n.<\/td>Nguy\u00ean li\u1ec7u th\u00f4 h\u01a1n l\u00e0m t\u0103ng t\u1ea3i tr\u1ecdng nghi\u1ec1n; nguy\u00ean li\u1ec7u qu\u00e1 m\u1ecbn c\u00f3 th\u1ec3 g\u00e2y t\u1eafc ngh\u1ebdn trong h\u1ec7 th\u1ed1ng c\u1ea5p li\u1ec7u.<\/td>N\u1ebfu b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c vi\u00ean n\u00e9n l\u1edbn h\u01a1n, h\u00e3y nghi\u1ec1n s\u01a1 xu\u1ed1ng k\u00edch th\u01b0\u1edbc 1-3 mm.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    \u1ee8ng d\u1ee5ng trong s\u1ea3n xu\u1ea5t: Nh\u1eefng l\u1ee3i \u00edch m\u00e0 PEEK \u0111\u01b0\u1ee3c gia c\u00f4ng b\u1eb1ng tia n\u01b0\u1edbc mang l\u1ea1i<\/h2>\n\n\n\n

    \u1ee8NG D\u1ee4NG 1<\/h3>\n\n\n\n

    B\u1ed9t si\u00eau m\u1ecbn PEEK d\u00f9ng trong s\u1ea3n xu\u1ea5t c\u1ea5y gh\u00e9p c\u1ed9t s\u1ed1ng \u2014 D50 3,5 \u03bcm, kh\u00f4ng ch\u1ee9a t\u1ea1p ch\u1ea5t kim lo\u1ea1i.<\/strong>
    Y\u00eau c\u1ea7u<\/strong>M\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb y t\u1ebf chuy\u00ean s\u1ea3n xu\u1ea5t khung gh\u00e9p x\u01b0\u01a1ng s\u1ed1ng b\u1eb1ng PEEK c\u1ea7n m\u1ed9t lo\u1ea1i b\u1ed9t PEEK m\u1ecbn cho quy tr\u00ecnh thi\u00eau k\u1ebft polymer \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra c\u1ea5u tr\u00fac khung x\u1ed1p th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a x\u01b0\u01a1ng. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt l\u00e0 D50 3-5 \u00b5m, D97 d\u01b0\u1edbi 12 \u00b5m v\u00e0 Fe d\u01b0\u1edbi 0,5 ppm \u2014 c\u00f9ng m\u1ee9c \u0111\u1ed9 t\u1ea1p ch\u1ea5t y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi b\u1ed9t titan d\u00f9ng trong c\u1ea5y gh\u00e9p. Nh\u00e0 cung c\u1ea5p tr\u01b0\u1edbc \u0111\u00e2y c\u1ee7a h\u1ecd s\u1eed d\u1ee5ng m\u00e1y nghi\u1ec1n tr\u1ee5c v\u00edt v\u00e0 li\u00ean t\u1ee5c kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 Fe \u1edf m\u1ee9c 2-4 ppm.
    Gi\u1ea3i ph\u00e1p<\/strong>C\u00f4ng ty EPIC Powder Machinery \u0111\u00e3 c\u1ea5u h\u00ecnh m\u1ed9t m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n t\u1ea7ng s\u00f4i v\u1edbi b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac ho\u00e0n to\u00e0n b\u1eb1ng g\u1ed1m (b\u00e1nh xe ph\u00e2n lo\u1ea1i ZrO2 v\u00e0 l\u1edbp l\u00f3t v\u1ecf, c\u00e1c mi\u1ebfng ch\u00e8n v\u00f2i phun Al2O3) ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t v\u00f2ng tu\u1ea7n ho\u00e0n nit\u01a1 k\u00edn. \u0110\u1ed9 tinh khi\u1ebft c\u1ee7a nit\u01a1 \u0111\u01b0\u1ee3c duy tr\u00ec \u1edf m\u1ee9c 99,91 TP3T. \u00c1p su\u1ea5t nghi\u1ec1n \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf m\u1ee9c 6,5 bar; t\u1ed1c \u0111\u1ed9 ph\u00e2n lo\u1ea1i \u1edf m\u1ee9c 5.800 v\u00f2ng\/ph\u00fat cho m\u1ee5c ti\u00eau D50 3,5 \u00b5m.<\/p>\n\n\n\n

    K\u1ebft qu\u1ea3<\/strong>
    D50: <\/strong>3,4 \u00b5m, D97 11,2 \u00b5m \u2014 \u0111\u1ea1t ti\u00eau chu\u1ea9n trong m\u1ecdi l\u00f4 s\u1ea3n xu\u1ea5t.
    \u00d4 nhi\u1ec5m s\u1eaft: <\/strong>d\u01b0\u1edbi 0,15 ppm theo ICP-MS \u2014 th\u1ea5p h\u01a1n 10-20 l\u1ea7n so v\u1edbi quy tr\u00ecnh nghi\u1ec1n b\u1eb1ng tr\u1ee5c v\u00edt.
    T\u00ednh to\u00e0n v\u1eb9n c\u1ee7a polymer: <\/strong>Ph\u00e2n t\u00edch nhi\u1ec7t vi sai (DSC) x\u00e1c nh\u1eadn kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y ho\u1eb7c \u0111\u1ed9 k\u1ebft tinh so v\u1edbi PEEK ch\u01b0a nghi\u1ec1n m\u1eabu \u0111\u1ed1i ch\u1ee9ng \u2014 kh\u00f4ng c\u00f3 s\u1ef1 suy gi\u1ea3m nhi\u1ec7t.
    T\u00e0i li\u1ec7u ph\u00e1p l\u00fd: <\/strong>\u0110\u1ea3m b\u1ea3o truy xu\u1ea5t ngu\u1ed3n g\u1ed1c nguy\u00ean v\u1eadt li\u1ec7u \u0111\u1ea7y \u0111\u1ee7 t\u1eeb l\u00f4 h\u1ea1t PEEK nguy\u00ean li\u1ec7u \u0111\u1ebfn l\u00f4 b\u1ed9t th\u00e0nh ph\u1ea9m; Gi\u1ea5y ch\u1ee9ng nh\u1eadn ph\u00e2n t\u00edch (COA) k\u00e8m theo k\u1ebft qu\u1ea3 PSD, ICP-MS v\u00e0 DSC \u0111\u01b0\u1ee3c cung c\u1ea5p cho m\u1ed7i l\u00f4 h\u00e0ng.<\/p>\n\n\n\n

    \u1ee8NG D\u1ee4NG 2<\/h3>\n\n\n\n

    B\u1ed9t composite PEEK d\u00f9ng cho v\u1eadt li\u1ec7u composite s\u1ee3i carbon h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u2014 D50 8 \u03bcm<\/strong>
    Y\u00eau c\u1ea7u<\/strong>
    M\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u composite h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 \u0111ang ph\u00e1t tri\u1ec3n v\u1eadt li\u1ec7u prepreg PEEK\/s\u1ee3i carbon cho c\u00e1c b\u1ed9 ph\u1eadn c\u1ea5u tr\u00fac m\u00e1y bay. B\u1ed9t PEEK m\u1ecbn \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n l\u00ean c\u00e1c b\u00f3 s\u1ee3i carbon tr\u01b0\u1edbc khi n\u00e9n ch\u1eb7t; b\u1ed9t tan ch\u1ea3y trong qu\u00e1 tr\u00ecnh n\u00e9n ch\u1eb7t v\u00e0 t\u1ea1o th\u00e0nh ma tr\u1eadn. B\u1ed9t PEEK m\u1ecbn h\u01a1n gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u ph\u00e2n b\u1ed1 tr\u00ean b\u1ec1 m\u1eb7t s\u1ee3i v\u00e0 gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng l\u1ed7 r\u1ed7ng trong l\u1edbp v\u1eadt li\u1ec7u \u0111\u00e3 n\u00e9n ch\u1eb7t. M\u1ee5c ti\u00eau c\u1ee7a h\u1ecd l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c D50 t\u1eeb 6-10 \u00b5m v\u00e0 D97 d\u01b0\u1edbi 25 \u00b5m. C\u00e1c th\u1eed nghi\u1ec7m nghi\u1ec1n c\u01a1 h\u1ecdc tr\u01b0\u1edbc \u0111\u00e2y cho ra k\u1ebft qu\u1ea3 D97 tr\u00ean 45 \u00b5m v\u1edbi c\u00e1c c\u1ee5m h\u1ea1t c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y.
    Gi\u1ea3i ph\u00e1p<\/strong> M\u00e1y nghi\u1ec1n phun t\u1ea7ng s\u00f4i s\u1eed d\u1ee5ng kh\u00ed n\u00e9n kh\u00f4 (PEEK c\u1ea5p h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 kh\u00f4ng c\u1ea7n m\u00f4i tr\u01b0\u1eddng nit\u01a1) v\u1edbi b\u1ed9 ph\u00e2n lo\u1ea1i \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf t\u1ed1c \u0111\u1ed9 3.400 v\u00f2ng\/ph\u00fat v\u00e0 \u00e1p su\u1ea5t nghi\u1ec1n \u1edf m\u1ee9c 7 bar.<\/p>\n\n\n\n

    K\u1ebft qu\u1ea3<\/strong>
    D50: <\/strong>8,1 \u00b5m, D97 23 \u00b5m \u2014 \u0111\u00e1p \u1ee9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1edbi bi\u00ean \u0111\u1ed9 an to\u00e0n.
    C\u00e1c c\u1ee5m \u0111\u00f4 th\u1ecb: <\/strong>Kh\u00f4ng ph\u00e1t hi\u1ec7n th\u1ea5y h\u1ea1t n\u00e0o c\u00f3 k\u00edch th\u01b0\u1edbc tr\u00ean 30 \u00b5m b\u1eb1ng k\u00ednh hi\u1ec3n vi \u2014 v\u1ea5n \u0111\u1ec1 khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p m\u00e0i c\u01a1 h\u1ecdc kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft.
    H\u00e0m l\u01b0\u1ee3ng r\u1ed7ng t\u1ed5ng h\u1ee3p: <\/strong>Gi\u1ea3m t\u1eeb 1,8% (v\u1edbi b\u1ed9t PEEK nghi\u1ec1n c\u01a1 h\u1ecdc) xu\u1ed1ng c\u00f2n 0,6% trong c\u00e1c th\u1eed nghi\u1ec7m n\u00e9n ch\u1eb7t \u2014 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 l\u00e0 d\u01b0\u1edbi 1%.
    Th\u00f4ng l\u01b0\u1ee3ng: <\/strong>N\u0103ng su\u1ea5t 12 kg\/gi\u1edd v\u1edbi m\u00e1y nghi\u1ec1n c\u1ee1 trung b\u00ecnh \u2014 \u0111\u1ee7 cho s\u1ea3n l\u01b0\u1ee3ng th\u00ed \u0111i\u1ec3m.<\/p>\n\n\n\n

    C\u00e1c lo\u1ea1i polyme hi\u1ec7u n\u0103ng cao kh\u00e1c ph\u00f9 h\u1ee3p cho qu\u00e1 tr\u00ecnh nghi\u1ec1n b\u1eb1ng tia n\u01b0\u1edbc.<\/h2>\n\n\n\n

    PEEK l\u00e0 lo\u1ea1i polymer hi\u1ec7u n\u0103ng cao \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn ph\u1ed5 bi\u1ebfn nh\u1ea5t trong l\u0129nh v\u1ef1c phay tia, nh\u01b0ng c\u00e1c nguy\u00ean t\u1eafc t\u01b0\u01a1ng t\u1ef1 c\u0169ng \u00e1p d\u1ee5ng cho nh\u00f3m polymer k\u1ef9 thu\u1eadt r\u1ed9ng h\u01a1n. \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh m\u00e0 t\u1ea5t c\u1ea3 ch\u00fang \u0111\u1ec1u c\u00f3: ch\u00fang b\u1ec1n ch\u1eafc, nh\u1ea1y nhi\u1ec7t v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 s\u1ef1 nhi\u1ec5m b\u1ea9n kim lo\u1ea1i v\u00e0 s\u1ef1 ph\u00e2n h\u1ee7y nhi\u1ec7t l\u00e0 kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

    Polyme<\/strong><\/td>M\u1ed1i quan ng\u1ea1i v\u1ec1 s\u1ef1 m\u1ec1m d\u1ebbo<\/strong><\/td>M\u1ee5c ti\u00eau \u0111i\u1ec3n h\u00ecnh c\u1ee7a m\u00e1y nghi\u1ec1n tia D50<\/strong><\/td>C\u00e1c \u1ee9ng d\u1ee5ng ch\u00ednh<\/strong><\/td><\/tr>
    PTFE<\/td>N\u00f3 kh\u00f4ng tan ch\u1ea3y theo c\u00e1ch th\u00f4ng th\u01b0\u1eddng nh\u01b0ng b\u1ecb bi\u1ebfn d\u1ea1ng d\u1ebbo d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 tr\u00ean 19 \u0111\u1ed9 C \u2014 qu\u00e1 tr\u00ecnh nghi\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng d\u1ebbo v\u00e0 v\u00f3n c\u1ee5c.<\/td>1-5 \u00b5m<\/td>Ph\u1ee5 gia b\u00f4i tr\u01a1n, l\u1edbp ph\u1ee7 ch\u1ed1ng d\u00ednh, gio\u0103ng y t\u1ebf<\/td><\/tr>
    Polyimide (PI)<\/td>Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh cao (250-400 \u0111\u1ed9 C) \u2014 \u00edt nh\u1ea1y c\u1ea3m h\u01a1n PEEK nh\u01b0ng v\u1eabn c\u00f3 l\u1ee3i t\u1eeb qu\u00e1 tr\u00ecnh m\u00e0i ngu\u1ed9i \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i nh\u1ef1a m\u1ecbn.<\/td>2-8 \u00b5m<\/td>M\u00e0ng phim h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, m\u1ea1ch \u0111i\u1ec7n linh ho\u1ea1t, b\u1ea1c l\u00f3t ch\u1ecbu nhi\u1ec7t cao<\/td><\/tr>
    PPS (polyphenylene sulfide)<\/td>Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh (Tg) 85-90 \u0111\u1ed9 C \u2014 nghi\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng s\u1ebd g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng v\u00f3n c\u1ee5c \u0111\u00e1ng k\u1ec3.<\/td>3-10 \u00b5m<\/td>Linh ki\u1ec7n \u00f4 t\u00f4, ch\u1ecbu h\u00f3a ch\u1ea5t, \u0111i\u1ec7n t\u1eed<\/td><\/tr>
    PEKK<\/td>T\u01b0\u01a1ng t\u1ef1 nh\u01b0 PEEK, Tg ~165 \u0111\u1ed9 C, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi c\u1ea7n t\u1ed1c \u0111\u1ed9 k\u1ebft tinh cao h\u01a1n.<\/td>2-8 \u00b5m<\/td>V\u1eadt li\u1ec7u composite h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, in 3D, c\u1ea5y gh\u00e9p<\/td><\/tr>
    UHMWPE<\/td>\u0110i\u1ec3m h\u00f3a m\u1ec1m r\u1ea5t th\u1ea5p \u2014 ngay c\u1ea3 nhi\u1ec7t ma s\u00e1t c\u0169ng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng h\u00e0n d\u00ednh b\u1ec1 m\u1eb7t; c\u1ea7n kh\u00ed l\u1ea1nh ho\u1eb7c h\u1ed7 tr\u1ee3 l\u00e0m l\u1ea1nh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh.<\/td>5-15 \u00b5m<\/td>C\u1ea5y gh\u00e9p ch\u1ec9nh h\u00ecnh, c\u00e1c b\u1ed9 ph\u1eadn hao m\u00f2n, b\u1ea3o v\u1ec7 ch\u1ed1ng \u0111\u1ea1n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    Gia c\u00f4ng PEEK ho\u1eb7c m\u1ed9t lo\u1ea1i polymer hi\u1ec7u n\u0103ng cao kh\u00e1c?<\/strong>
    M\u00e1y nghi\u1ec1n t\u1ea7ng s\u00f4i c\u1ee7a EPIC Powder Machinery \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh cho PEEK, PTFE, PI, PPS v\u00e0 c\u00e1c polyme k\u1ef9 thu\u1eadt kh\u00e1c. Ch\u00fang t\u00f4i cung c\u1ea5p d\u1ecbch v\u1ee5 nghi\u1ec1n th\u1eed mi\u1ec5n ph\u00ed cho v\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n \u2014 b\u1ea1n ch\u1ec9 c\u1ea7n ch\u1ec9 \u0111\u1ecbnh D50 v\u00e0 D97 m\u1ee5c ti\u00eau v\u00e0 ch\u00fang t\u00f4i s\u1ebd tr\u1ea3 v\u1ec1 d\u1eef li\u1ec7u PSD, ph\u00e2n t\u00edch t\u1ea1p ch\u1ea5t v\u00e0 \u0111\u1ec1 xu\u1ea5t th\u00f4ng s\u1ed1 quy tr\u00ecnh. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u d\u00f9ng trong y t\u1ebf v\u00e0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 v\u1eadn h\u00e0nh trong m\u00f4i tr\u01b0\u1eddng nit\u01a1 v\u1edbi b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac b\u1eb1ng g\u1ed1m v\u00e0 cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 t\u00e0i li\u1ec7u truy xu\u1ea5t ngu\u1ed3n g\u1ed1c v\u1eadt li\u1ec7u. H\u00e3y g\u1eedi cho ch\u00fang t\u00f4i v\u1eadt li\u1ec7u c\u1ee7a b\u1ea1n, PSD m\u1ee5c ti\u00eau v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n, ch\u00fang t\u00f4i s\u1ebd thi\u1ebft k\u1ebf c\u1ea5u h\u00ecnh ph\u00f9 h\u1ee3p.\u00a0\u00a0<\/strong>
    Y\u00eau c\u1ea7u xay th\u1eed mi\u1ec5n ph\u00ed: www.jet-mills.com\/contact\u00a0\u00a0<\/strong>
    Kh\u00e1m ph\u00e1 d\u00f2ng m\u00e1y nghi\u1ec1n polymer phun tia c\u1ee7a ch\u00fang t\u00f4i: www.jet-mills.com<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n

    \u0110\u1ed9 d\u00e0y D50 t\u1ed1i \u0111a c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p phay tia n\u01b0\u1edbc \u0111\u1ed1i v\u1edbi PEEK l\u00e0 bao nhi\u00eau, v\u00e0 li\u1ec7u c\u00f3 gi\u1edbi h\u1ea1n d\u01b0\u1edbi th\u1ef1c t\u1ebf n\u00e0o kh\u00f4ng?<\/h3>\n\n\n\n

    Gi\u1edbi h\u1ea1n d\u01b0\u1edbi th\u1ef1c t\u1ebf \u0111\u1ed1i v\u1edbi vi\u1ec7c nghi\u1ec1n b\u1eb1ng tia kh\u00ed PEEK trong \u0111i\u1ec1u ki\u1ec7n ti\u00eau chu\u1ea9n l\u00e0 kho\u1ea3ng D50 1-2 \u00b5m. D\u01b0\u1edbi k\u00edch th\u01b0\u1edbc n\u00e0y, b\u1ed9t PEEK ng\u00e0y c\u00e0ng d\u1ec5 b\u1ecb v\u00f3n c\u1ee5c t\u0129nh \u0111i\u1ec7n trong v\u00f9ng ph\u00e2n lo\u1ea1i \u2014 c\u00e1c h\u1ea1t polymer m\u1ecbn mang \u0111i\u1ec7n t\u00edch b\u1ec1 m\u1eb7t, v\u00e0 \u1edf di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang l\u1edbn, ch\u00fang h\u00fat nhau m\u1ea1nh h\u01a1n so v\u1edbi kh\u1ea3 n\u0103ng t\u00e1ch c\u1ee7a lu\u1ed3ng kh\u00ed ph\u00e2n lo\u1ea1i. M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng ch\u1ea5t ph\u1ee5 gia ch\u1ed1ng t\u0129nh \u0111i\u1ec7n ho\u1eb7c ki\u1ec3m so\u00e1t \u0111\u1ed9 \u1ea9m trong d\u00f2ng kh\u00ed \u0111\u1ec3 gi\u1ea3m k\u00edch th\u01b0\u1edbc xu\u1ed1ng d\u01b0\u1edbi 1 \u00b5m, nh\u01b0ng \u0111i\u1ec1u n\u00e0y l\u00e0m t\u0103ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a quy tr\u00ecnh. \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, ph\u1ea1m vi \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u00e0 D50 1,5-15 \u00b5m, v\u1edbi D97 th\u01b0\u1eddng g\u1ea5p 3-4 l\u1ea7n D50. N\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u b\u1ed9t PEEK th\u00f4 h\u01a1n \u0111\u1ec3 thi\u00eau k\u1ebft laser (D50 40-90 \u00b5m), th\u00ec nghi\u1ec1n b\u1eb1ng tia kh\u00ed kh\u00f4ng ph\u1ea3i l\u00e0 c\u00f4ng ngh\u1ec7 ph\u00f9 h\u1ee3p cho ph\u1ea1m vi \u0111\u00f3 \u2014 nghi\u1ec1n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh ho\u1eb7c k\u1ebft t\u1ee7a h\u00f2a tan s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n.<\/p>\n\n\n\n

    Qu\u00e1 tr\u00ecnh nghi\u1ec1n b\u1eb1ng tia kh\u00ed c\u00f3 l\u00e0m thay \u0111\u1ed5i tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed ho\u1eb7c \u0111\u1ed9 k\u1ebft tinh c\u1ee7a PEEK kh\u00f4ng?<\/h3>\n\n\n\n

    \u1ede c\u00e1c th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c, kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i n\u00e0o x\u1ea3y ra \u2014 v\u00e0 \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1edfi hai th\u1eed nghi\u1ec7m \u0111\u1eb7c tr\u01b0ng ti\u00eau chu\u1ea9n. DSC (ph\u00e2n t\u00edch nhi\u1ec7t vi sai) \u0111o \u0111i\u1ec3m n\u00f3ng ch\u1ea3y v\u00e0 \u0111\u1ed9 k\u1ebft tinh c\u1ee7a b\u1ed9t: n\u1ebfu s\u1ef1 ph\u00e2n h\u1ee7y nhi\u1ec7t x\u1ea3y ra trong qu\u00e1 tr\u00ecnh nghi\u1ec1n, \u0111\u1ec9nh n\u00f3ng ch\u1ea3y s\u1ebd d\u1ecbch chuy\u1ec3n ho\u1eb7c m\u1edf r\u1ed9ng v\u00e0 \u0111\u1ed9 k\u1ebft tinh s\u1ebd thay \u0111\u1ed5i. GPC (s\u1eafc k\u00fd th\u1ea9m th\u1ea5u gel) \u0111o s\u1ef1 ph\u00e2n b\u1ed1 kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed: s\u1ef1 \u0111\u1ee9t g\u00e3y chu\u1ed7i do ph\u00e2n h\u1ee7y nhi\u1ec7t ho\u1eb7c c\u01a1 h\u1ecdc s\u1ebd th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng s\u1ef1 d\u1ecbch chuy\u1ec3n \u0111\u1ebfn kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed th\u1ea5p h\u01a1n. PEEK \u0111\u01b0\u1ee3c nghi\u1ec1n b\u1eb1ng tia kh\u00ed \u1edf \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 nghi\u1ec1n ch\u00ednh x\u00e1c lu\u00f4n cho k\u1ebft qu\u1ea3 DSC v\u00e0 GPC t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi nh\u1ef1a tham chi\u1ebfu ch\u01b0a nghi\u1ec1n. Nguy c\u01a1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed l\u00e0 c\u00f3 th\u1eadt n\u1ebfu \u00e1p su\u1ea5t nghi\u1ec1n \u0111\u01b0\u1ee3c \u0111\u1eb7t qu\u00e1 cao (n\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp qu\u00e1 m\u1ee9c) ho\u1eb7c n\u1ebfu h\u01a1i \u1ea9m x\u00e2m nh\u1eadp v\u00e0o m\u1ea1ch nit\u01a1 (s\u1ef1 ph\u00e2n h\u1ee7y th\u1ee7y ph\u00e2n c\u00e1c li\u00ean k\u1ebft este trong PEEK). Vi\u1ec7c x\u00e1c nh\u1eadn b\u1eb1ng DSC tr\u00ean l\u00f4 s\u1ea3n xu\u1ea5t \u0111\u1ea7u ti\u00ean l\u00e0 th\u1ef1c h\u00e0nh ti\u00eau chu\u1ea9n cho c\u00e1c \u1ee9ng d\u1ee5ng y t\u1ebf.<\/p>\n\n\n\n

    Khi n\u00e0o th\u00ec n\u00ean s\u1eed d\u1ee5ng nit\u01a1 thay v\u00ec kh\u00ed n\u00e9n \u0111\u1ec3 phay PEEK b\u1eb1ng tia kh\u00ed?<\/h3>\n\n\n\n

    Nit\u01a1 c\u1ea7n thi\u1ebft cho hai tr\u01b0\u1eddng h\u1ee3p. Th\u1ee9 nh\u1ea5t, c\u00e1c \u1ee9ng d\u1ee5ng y t\u1ebf v\u00e0 c\u1ea5y gh\u00e9p: ngay c\u1ea3 s\u1ef1 oxy h\u00f3a nh\u1ecf tr\u00ean b\u1ec1 m\u1eb7t PEEK trong qu\u00e1 tr\u00ecnh nghi\u1ec1n c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc. Nit\u01a1 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n oxy kh\u1ecfi m\u00f4i tr\u01b0\u1eddng nghi\u1ec1n, ng\u0103n ng\u1eeba s\u1ef1 bi\u1ebfn \u0111\u1ed5i oxy h\u00f3a c\u1ee7a h\u00f3a h\u1ecdc b\u1ec1 m\u1eb7t polymer. Th\u1ee9 hai, b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o m\u00e0 b\u1ed9t PEEK s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong quy tr\u00ecnh ti\u1ebfp theo nh\u1ea1y c\u1ea3m v\u1edbi oxy, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t s\u1ed1 quy tr\u00ecnh h\u1ee3p nh\u1ea5t v\u1eadt li\u1ec7u composite ho\u1eb7c c\u00e1c b\u01b0\u1edbc ch\u1ee9c n\u0103ng h\u00f3a b\u1ec1 m\u1eb7t. Kh\u00ed n\u00e9n c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u composite c\u1ea5u tr\u00fac h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, ch\u1ea5t ph\u1ee5 gia ma s\u00e1t v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p n\u00f3i chung, n\u01a1i m\u1ed9t m\u1ee9c \u0111\u1ed9 oxy h\u00f3a b\u1ec1 m\u1eb7t nh\u1ecf kh\u00f4ng g\u00e2y ra h\u1eadu qu\u1ea3 v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng. S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 chi ph\u00ed v\u1eadn h\u00e0nh gi\u1eefa kh\u00f4ng kh\u00ed v\u00e0 nit\u01a1 l\u00e0 \u0111\u00e1ng k\u1ec3 \u0111\u1ed1i v\u1edbi s\u1ea3n xu\u1ea5t li\u00ean t\u1ee5c - nit\u01a1 y\u00eau c\u1ea7u ph\u1ea3i \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1ea1i ch\u1ed7 ho\u1eb7c cung c\u1ea5p s\u1ed1 l\u01b0\u1ee3ng l\u1edbn, v\u00e0 h\u1ec7 th\u1ed1ng nit\u01a1 kh\u00e9p k\u00edn l\u00e0m t\u0103ng chi ph\u00ed \u0111\u1ea7u t\u01b0. Ch\u1ec9 s\u1eed d\u1ee5ng nit\u01a1 khi y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1eb7c \u0111\u1ecbnh.<\/p>\n\n\n\n

    H\u00ecnh th\u00e1i h\u1ea1t c\u1ee7a PEEK \u0111\u01b0\u1ee3c nghi\u1ec1n b\u1eb1ng tia kh\u00ed so v\u1edbi PEEK \u0111\u01b0\u1ee3c nghi\u1ec1n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh th\u00ec nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n

    Nghi\u1ec1n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh l\u00e0m cho PEEK tr\u1edf n\u00ean gi\u00f2n b\u1eb1ng c\u00e1ch l\u00e0m l\u1ea1nh n\u00f3 xu\u1ed1ng d\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh b\u1eb1ng nit\u01a1 l\u1ecfng tr\u01b0\u1edbc khi nghi\u1ec1n. \u1ede nhi\u1ec7t \u0111\u1ed9 \u0111\u00f4ng l\u1ea1nh, c\u00e1c v\u00f9ng v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u1ee7a PEEK m\u1ea5t \u0111i \u0111\u1eb7c t\u00ednh \u0111\u00e0n h\u1ed3i nh\u1edbt v\u00e0 tr\u1edf n\u00ean gi\u00f2n - v\u1eadt li\u1ec7u b\u1ecb v\u1ee1 gi\u1ed1ng nh\u01b0 g\u1ed1m s\u1ee9. Vi\u1ec7c nghi\u1ec1n PEEK b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f4ng l\u1ea1nh th\u01b0\u1eddng t\u1ea1o ra c\u00e1c h\u1ea1t d\u1ea1ng phi\u1ebfn kh\u00f4ng \u0111\u1ec1u v\u00ec PEEK c\u00f3 xu h\u01b0\u1edbng b\u1ecb t\u00e1ch d\u1ecdc theo m\u1eb7t ph\u1eb3ng c\u1ee7a c\u00e1c phi\u1ebfn b\u00e1n tinh th\u1ec3 khi gi\u00f2n. Nghi\u1ec1n b\u1eb1ng tia kh\u00ed t\u1ea1o ra c\u00e1c h\u1ea1t c\u00f3 h\u00ecnh d\u1ea1ng g\u00f3c c\u1ea1nh, \u0111\u1ec1u h\u01a1n v\u00ec s\u1ef1 v\u1ee1 \u0111\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi va ch\u1ea1m t\u1ed1c \u0111\u1ed9 cao ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 t\u00e1ch r\u1eddi. C\u1ea3 hai quy tr\u00ecnh \u0111\u1ec1u kh\u00f4ng t\u1ea1o ra c\u00e1c h\u1ea1t h\u00ecnh c\u1ea7u m\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u00f2a tan-k\u1ebft t\u1ee7a c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c. H\u00ecnh th\u00e1i h\u1ea1t r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 kh\u1ea3 n\u0103ng ch\u1ea3y c\u1ee7a b\u1ed9t l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t - v\u00ed d\u1ee5, in 3D SLS \u01b0u ti\u00ean c\u00e1c h\u1ea1t tr\u00f2n h\u01a1n v\u00ec ch\u00fang ch\u1ea3y v\u00e0 \u0111\u00f3ng g\u00f3i \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n trong l\u1edbp b\u1ed9t. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea9m composite v\u00e0 y t\u1ebf, c\u00e1c h\u1ea1t g\u00f3c c\u1ea1nh t\u1eeb ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n b\u1eb1ng tia kh\u00ed \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn v\u00e0 trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n v\u00ec \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t cao h\u01a1n gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng li\u00ean k\u1ebft.<\/p>\n\n\n\n

    Ngo\u00e0i PEEK, m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n c\u1ee7a EPIC Powder Machinery c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c lo\u1ea1i polymer hi\u1ec7u n\u0103ng cao kh\u00e1c kh\u00f4ng?<\/h3>\n\n\n\n

    V\u00e2ng. M\u00e1y nghi\u1ec1n t\u1ea7ng s\u00f4i c\u1ee7a EPIC Powder \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho PTFE, polyimide (PI), PPS, PEKK, UHMWPE v\u00e0 m\u1ed9t s\u1ed1 polyme k\u1ef9 thu\u1eadt kh\u00e1c. Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u1ea5u h\u00ecnh cho c\u00e1c polyme kh\u00e1c nhau ch\u1ee7 y\u1ebfu n\u1eb1m \u1edf \u00e1p su\u1ea5t nghi\u1ec1n (PTFE y\u00eau c\u1ea7u \u00e1p su\u1ea5t th\u1ea5p h\u01a1n PEEK do \u0111\u1eb7c t\u00ednh g\u00e3y v\u1ee1 r\u1ea5t kh\u00e1c nhau), m\u00f4i tr\u01b0\u1eddng nit\u01a1 (c\u1ea7n thi\u1ebft cho PTFE v\u00e0 UHMWPE \u0111\u1ec3 ng\u0103n ng\u1eeba qu\u00e1 tr\u00ecnh oxy h\u00f3a, c\u0169ng nh\u01b0 \u0111\u1ed1i v\u1edbi PEEK y t\u1ebf) v\u00e0 t\u1ed1c \u0111\u1ed9 ph\u00e2n lo\u1ea1i (thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o D50 m\u1ee5c ti\u00eau v\u00e0 m\u1eadt \u0111\u1ed9 polyme). UHMWPE, v\u1edbi \u0111i\u1ec3m h\u00f3a m\u1ec1m c\u1ef1c th\u1ea5p, \u0111\u00f4i khi \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb vi\u1ec7c l\u00e0m l\u1ea1nh s\u01a1 b\u1ed9 nh\u1eb9 nguy\u00ean li\u1ec7u \u0111\u1ea7u v\u00e0o tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o m\u00e1y nghi\u1ec1n t\u1ea7ng s\u00f4i. Ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c th\u1eed nghi\u1ec7m nghi\u1ec1n tr\u00ean t\u1eebng lo\u1ea1i polyme tr\u01b0\u1edbc khi x\u00e1c \u0111\u1ecbnh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft b\u1ecb \u2014 h\u00e0nh vi nghi\u1ec1n polyme bi\u1ebfn \u0111\u1ed5i nhi\u1ec1u h\u01a1n gi\u1eefa c\u00e1c lo\u1ea1i c\u00f9ng m\u1ed9t nguy\u00ean li\u1ec7u c\u01a1 b\u1ea3n so v\u1edbi nghi\u1ec1n kho\u00e1ng ch\u1ea5t, v\u00ec v\u1eady th\u1eed nghi\u1ec7m tr\u00ean lo\u1ea1i nh\u1ef1a c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n l\u00e0 c\u00e1ch \u0111\u00e1ng tin c\u1eady duy nh\u1ea5t \u0111\u1ec3 thi\u1ebft l\u1eadp b\u1ed9 th\u00f4ng s\u1ed1 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

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