Kodi PEEK ndi chiyani?

Polyether ether ketone (Poly-ether-ether-ketone, mwachidule PEEK) ndi mtundu wa zinthu zapadera za polima zomwe zimakhala ndi mayunitsi obwerezabwereza okhala ndi ma bond awiri a ether ndi ketone bond imodzi mu kapangidwe ka unyolo waukulu. Ndi mndandanda wazinthu za polyether ketone. Ili ndi mawonekedwe a semi-knot crystal state, high temperature resistance, chemical corrosion resistance ndi zina zotero.

Makhalidwe a PEEK

Polyether ether ketone (PEEK) pakadali pano ndiye mtundu wokhawo wa polyaryl ether ketone (PAEK) womwe ungapangidwe mochuluka. PEEK, monga pulasitiki yapadera yaukadaulo, ili ndi mphamvu zabwino kwambiri.
Zizindikiro zodziwika bwino za PEEK:
(1) Kugwira Ntchito: Utomoni wa PEEK uli ndi ubwino wa kutentha kwambiri komanso kutentha kwambiri komwe kumawola. Ukhoza kukonzedwa pogwiritsa ntchito jekeseni, extrusion molding, molding, blow molding, melting spinning, rotary molding ndi powder spray, ndi zina zotero.

(2) Kukana kwa kuwala: ndi kukana kwa kuwala kwamphamvu, mphamvu zamakina zimatha kusungidwa mokwanira pansi pa ma radiation ambiri a γ, kuposa polystyrene yabwino kwambiri yokana kuwala mu utomoni wamba, ingagwiritsidwe ntchito ngati zida zokana kuwala mu zida za nyukiliya.

(3) Choletsa moto: PEEK imadzizimitsa yokha, ngakhale yopanda choletsa moto, mpaka kufika pa UL standard 94V-0 grade.

(4) Kukana kugwedezeka: chifukwa cha kupsinjika kosalekeza, zinthuzo zidzasintha kukhala kugwedezeka kwamuyaya pakapita nthawi. PEEK ndiye chinthu chabwino kwambiri chokana kugwedezeka cha utomoni wa thermoplastic.

(5) Kulimba ndi kulimba: ndi mphamvu yayikulu yokoka, mphamvu yayikulu yosweka kwa kupsinjika, makamaka posinthana kupsinjika, kukana kutopa ndikodabwitsa kwambiri, kofanana ndi zinthu zopangidwa ndi aloyi.

(6) Kudzipaka mafuta okha (kukana kuvala): PEEK ili ndi makhalidwe abwino kwambiri otsetsereka, oyenera zofunikira kwambiri pakugwiritsa ntchito mphamvu zochepa zotsutsana ndi kuvala; Makamaka, PEEK yosinthidwa ndi ulusi wa kaboni, graphite ndi PTFE ili ndi kukana kuvala bwino.

(7) Kukana kutentha kwambiri: PEEK ili ndi kutentha kwakukulu kwa kusintha kwa galasi (Tg=143℃) ndi malo osungunuka (Tm=334℃), kutentha kwake kwa kutentha kwa katundu kumafika pa 316℃, kutentha kwa nthawi yayitali ndi 260℃, kutentha kwa nthawi yomweyo kumatha kufika pa 300℃, kutentha kwambiri komanso kuthamanga kwa nthawi yayitali popanda kutayika kwa zinthu zakuthupi.

(8) Kukana kwa Hydrolysis: Zinthu za PEEK zimatha kugwira ntchito kwa maola masauzande ambiri popanda kuwonongeka koonekeratu kwa magwiridwe antchito mu nthunzi ya 260℃ kapena kumizidwa m'madzi ndi mphamvu yayikulu; PEEK ili ndi kukana kwabwino kwambiri kwa hydrolysis ndi nthunzi pakati pa mapulasitiki onse opanga uinjiniya.

(9) Yopanda poizoni: ingagwiritsidwe ntchito pa ukhondo wa chakudya, zida zachipatala ndi zina.

(10) Kukana dzimbiri: Kupatula asidi wokhuthala wa sulfuric, PEEK sisungunuka mu solvent iliyonse komanso asidi wamphamvu ndi alkali, yokhala ndi mankhwala olimba kwambiri.

(11) Kukana kutopa: PEEK ili ndi kukana kutopa kwambiri pakati pa zinthu zonse za thermoplastic resin.

Kugwiritsa ntchito kwa PEEK

Utomoni wa polyether ether ketone (PEEK) ndi mtundu wa ntchito yabwino kwambiri ya pulasitiki yapadera ya uinjiniya, ubwino wake waukulu poyerekeza ndi mapulasitiki ena apadera a uinjiniya, kukana kutentha kwambiri, kugwira ntchito bwino kwa makina, kudzipaka mafuta, kukana dzimbiri kwa mankhwala, kukana malawi, kukana kuchotsa zinthu, kukana kuwala kwa dzuwa, kukhazikika kwa kutchinjiriza, kukana hydrolysis ndi kukonza kosavuta, ndi zina zotero, zomwe zimagwiritsidwa ntchito kwambiri m'zachipatala.

Utomoni wa PEEK ukhoza kupirira mpaka maulendo 3000 a autoclaving pa 134 ° C, zomwe zimapangitsa kuti ukhale woyenera kupanga zida zopangira opaleshoni komanso zamano zoyeretsera kwambiri zomwe zimafuna kugwiritsidwa ntchito mobwerezabwereza. PEEK sikuti ili ndi ubwino wopepuka, wosakhala ndi poizoni komanso wokana dzimbiri, komanso ili ndi mawonekedwe a elastic modulus ya fupa la cortical la munthu, lomwe lingaphatikizidwe ndi thupi. Chifukwa chake, kugwiritsa ntchito utomoni wa PEEK m'malo mwa chitsulo popanga mafupa a munthu ndi ntchito ina yofunika kwambiri pazachipatala.

PEEK idagwiritsidwa ntchito koyamba kuchipatala mu 1999. Kuyambira pamenepo, anthu oposa mamiliyoni asanuZogulitsa za PEEKZaikidwa mwa anthu, zomwe zimapangitsa kuti zikhale muyezo wabwino kwambiri pakulumikizana kwa msana. M'zaka zaposachedwapa, PEEK yayamikiridwa ngati "zipangizo zoyenera kwambiri m'badwo wotsatira wa mankhwala obzalidwa".

Ndi mitundu yanji ya ma implants omwe amapangidwa kuchokera ku PEEK?
（1）zolowa m'malo mwa mafupa, maxillofacial bone implants
(2) opaleshoni ya msana, kuphatikizika kwa msana
（3）ndi zinthu zolowa m'malo mwa mafupa a m'chiuno, zomangira mafupa
(4) zida zamafupa: mbale yokhazikika ndi zomangira
(5) m'malo mwa mano CFR - PEEK - yopangidwa ndi ma implants a mano, mano opangidwa ndi mano, kusunga mizu
(6) mu opaleshoni ya mtima, mapampu a mtima ndi ma valve

Ndi makampani ati padziko lonse lapansi omwe angapange PEEK yokhazikika kwa nthawi yayitali? Peek-optima imapangidwa ndi Invibio, gawo la biomaterials la Victrex ku UK.PEEK;

(1) Zipangizo za PEEK zobzalidwa zomwe zatulutsidwa pamsika pakadali pano zili ndi mwayi waukulu pamsika wapadziko lonse lapansi.
(2) Belgium Solvay idayambitsa zinthu za PEEK zoyambira zenIVa-PEEK mu 2009.
(3) Evonik wochokera ku Germany adalowa mumsika waku China kumayambiriro kwa chaka cha 2014 ndi dzina la malonda ake: VESTAKEEP PEEK.
(4) Guangzhou Jusheng Medical Technology Co., LTD., kampani yokhayo yopanga zinthu za PEEK zomwe zili ndi implant ku China, yatulutsa PEEK JS-S1 yomwe ili ndi dzina la NATUREGEN komanso JS-S1 yomwe ili ndi mtundu wake.

Mbiri ya PEEK

Nthawi yoyamba yoberekera (1978-1992):

PEEK ndi pulasitiki yapadera yaukadaulo yopangidwa ndi ICI mu 1978. ICI inapempha chilolezo cha patent ndipo inachipanga kukhala cha mafakitale, yokhala ndi mphamvu yopangira matani 1000 pachaka, yomwe imagwiritsidwa ntchito kwambiri mumakampani oteteza.

Kukula ndi Kugwa kwa Monopoly (1993-2004):

Victrex adapeza bizinesi ya PEEK kuchokera ku ICI, zomwe zikusonyeza kuti ikukula mwachangu, ndipo nthawi zonse idakulitsa kuchuluka kwa kupanga. Mu 2003, mphamvu yopangira pachaka idakwera kufika pa matani 2800. Pambuyo pake, zinthu zofananazo zidapangidwa motsatizana ndi DuPont, BASF, Mitsui Tosei Chemical Company ya ku Japan, ndi Telep ya ku United States. PEEK yakula kuchokera ku ntchito zake zoyamba zankhondo kupita ku ntchito zamafakitale ndi zamankhwala.

Kwa nthawi yayitali, PEEK yakhala ikulembedwa ngati zida zoyendetsera ntchito za ku China zoletsa ndi kuletsa ku China ndi Komiti Yogwirizanitsa ya Paris. Pofuna kukwaniritsa zosowa za chitetezo cha dziko ndi chitukuko chaukadaulo wapamwamba, boma layiyika mu mapulojekiti ofunikira a sayansi ndi ukadaulo kuyambira pa Ndondomeko yachisanu ndi chiwiri ya zaka zisanu mpaka Ndondomeko ya khumi ya zaka zisanu ndi Ndondomeko ya 863 yofufuzira. Mothandizidwa kwambiri ndi mfundo za China, gulu la Pulofesa Wu Zhongwen ku Jilin University linapanga ukadaulo wa patent wa PEEK wokhala ndi ufulu wodziyimira pawokha wazinthu zanzeru ndipo linakhazikitsa Jida High-tech Materials Co., LTD., yomwe idapangidwa.

Gawo Lonse la Chitukuko (2005-mpaka pano):

Mu 2005, Evonik adapeza bizinesi ya PEEK ya Garda ku India, pomwe Solvay adapeza bizinesi ya PEEK. Mu 2009, Jinfa Technology Co., LTD., Panjin Zhongrun Special Plastic Co., Ltd. yaku China ndi makampani ena adalowa m'mundawu, ndipo PEEK idalowa mu gawo la chitukuko chonse. Kuphatikiza apo, kusintha kwa ukadaulo wa PEEK composite ndi processing kukukula pang'onopang'ono, ndipo gawo logwiritsira ntchito likukulanso. Chifukwa cha kuchuluka kwa opanga omwe amadziwika bwino pakupanga PEEK padziko lonse lapansi, mpikisano wamsika udzakhala wokwera kwambiri. Pakadali pano, Wiggs, Solvay ndi Evonik ndi opanga atatu akuluakulu a PEEK padziko lonse lapansi.