PTFE yubushyuhe bwo hejuru ikora nkibikoresho byingenzi mubikorwa bya semiconductor, ntabwo ari intego rusange ikoreshwa. Porogaramu zingenzi: kurinda urwego rwa wafer (mask ya plasma etching, kurinda inyuma ya CMP, masike ya CVD / PVD), uburyo bwo gupakira (gukosora insinga, kugurisha imashini ya PCBs), no gufata neza ibikoresho (gufunga anti-static roller, gupfunyika isuku). Ibisabwa cyane-bisukuye: halogene nkeya (irinda kwangirika kwangirika), siloxane nkeya (<500 ppm, irinda insuline yibice), ion nkeya yicyuma (<1 ppm buri umwe), ISO yo mu cyiciro cya 4 cyogusukura / gupakira, 10⁶-10⁹ resist kurwanya ubukana bwa TVOC.

Ibikoresho bitanduye ni ishingiro ryibanze rya PTFE yubushyuhe bwo hejuru. Umwanda (abatangiza ibisigisigi, surfactants, ion ibyuma, ibipimo byanduye byanduye) bitera kwangirika kwubushyuhe bwigihe kitaragera (ibibyimba, guhuha hejuru ya 260 ° C), hejuru yuburinganire butari inkoni (ingingo zifatika), kugabanya amashanyarazi (gutakaza dielectric, voltage yamenetse hasi), imbaraga zumukanishi (guhangayikishwa no guhagarika umutima). Ibikoresho fatizo bifite isuku nyinshi byemeza FDA yubahiriza, kuramba, gukora cyane PTFE.

PTFE isize fiberglass umwenda wo guswera bisaba gufata neza kuri 370-400 ° C. Itanura rihoraho: 30-90s (inanutse) kugeza 3-5 + min (umubyimba). Amatanura yuzuye: 5-15 min. Gucumura-munsi bitera impuzu zidasobanutse, zidakabije; kurenza urugero bitera umuhondo, ubunebwe, hamwe na gaz ya fluoride irekura. Gukoresha uburyo bwiza: koresha ubushyuhe bwamashyiga, ukore igenzura ryerekanwa (igice-kibonerana, cyoroshye), kandi ukore ibizamini byo gukurura kaseti. Buri gihe menya neza ko ubushyuhe bwuzuye bwuzuye.

Icyiciro cyubuvuzi PTFE yubushyuhe bwo hejuru ikomatanya biocompatible PTFE substrate hamwe na platine yakize ya silicone. Ibyingenzi byingenzi: ISO 10993 yubahiriza (nta cytotoxicity, sensibilisation, cyangwa kurakara), irwanya sterisizasiya inshuro nyinshi (steam / EO / gamma), 260 ° C irwanya ubushyuhe. Icyitonderwa gikomeye: nturenze 260 ° C (umwotsi wuburozi uri hejuru ya 300 ° C), imirasire ya gamma irashobora gutera uburibwe, kwemeza uburyo bwo kuboneza urubyaro, no gusaba ibyangombwa byuzuye (raporo ISO 10993, MSDS, amakuru ashaje). Ntabwo ari kumaraso ataziguye cyangwa gukoreshwa keretse byemejwe neza.

Imyenda ya PTFE yubushyuhe bwo hejuru isaba gufata neza kugirango umutekano urambe. Icyitonderwa cyingenzi: ntuzigere urenga 260 ° C (hejuru ya 320 ° C irekura imyotsi yuburozi), irinde ibishishwa bikarishye (gutwikamo ibice, byerekana fiberglass), ntugire isuku ikabije (ubwoya bwibyuma byangiza ubuso butari inkoni), kubika uburyo bwo kwagura ubushyuhe bwumuriro (birinda gushwanyagurika), kandi bigasimburwa mugihe byavunitse cyangwa bikonje. Ububiko bwazungurutse, kure ya UV. Wambare uturindantoki twangiza ubushyuhe mugihe cyo gukora.

Imyenda ya PTFE ifite ubushyuhe bwo hejuru ifite coefficent yo kwagura ubushyuhe (CTE) ya 30-60 ppm / ° C (warp / weft) - hejuru ya fiberglass yonyine ariko iri munsi cyane ya PTFE (100-200 ppm / ° C). PTFE ihinduka muburyo butunguranye (1-2%) kuri 19 ° C na 30 ° C. Kugira ngo wirinde guhondagura, gutanyagura, no gusibanganya: ibishushanyo mbonera byo kwaguka ku buntu, irinde guhagarika umutima binyuze mu bushyuhe bw’inzibacyuho, koresha ibyuma byikora byikora ku mukandara wa convoyeur, hanyuma ukoreshe igishushanyo mbonera cyo kurwanya. Kugenzura buri gihe imbeho ni ngombwa.

Gukoresha kaseti ya PTFE biterwa nimpamvu enye: gushiraho ifatizo (ubwinshi bwambukiranya imipaka, kwimuka kwa silicone nkeya, imiterere ya microphase kugirango isubirwemo), substrate anchoring (surface activation + primer kugirango wirinde kwimura neza), gutwikira inyuma (kurekura ibice kugirango urinde ibifatika mugihe utabishaka), hamwe no gufata neza (hejuru yubushuhe bukwiye). Amazi yogejwe n'amazi yahinduwe arashobora gukira> 90% tack nyuma yo gukora isuku.

Imyenda yo gutekesha PTFE yubushyuhe bwo hejuru itanga inyungu enye zingenzi: imikorere idakomeye (nta mavuta cyangwa ifu ikenewe, imigati yoroshye irekura neza), ubushyuhe bwagutse (-70 ° C kugeza 260 ° C, umutekano w’itanura kugeza kuri firigo), kongera gukoreshwa (inzinguzingo ibihumbi, byoroshye gusukura), ndetse no gutwara ubushyuhe (birinda gutwika, kuringaniza neza). Ibiribwa byo mu rwego rwa FDA byujuje ubuziranenge, biruta impapuro zimpu kandi biruta materi ya silicone hamwe no guhererekanya ubushyuhe bwiza hamwe nubutaka bwiza.

Imyenda ya PTFE yubushyuhe ni ngombwa mu nganda zihuza imyenda. Ibyingenzi byingenzi: imikandara ya convoyeur itagira umupaka kumashini ikomeza guhuza (irinda ibishishwa bishyushye bifata neza, bitagira inkari), igipfundikizo kidafite inkoni hamwe nigitambaro cyo gupakira kumashanyarazi ashyushye (irinda platine kwanduza), umukandara wa convoyeur utudomo twa paste / ifu yerekana ifu (ikomeza utudomo twa feri no gukanda). Umubyimba uri hagati ya 0.13mm (padi yoroheje) kugeza 0.55mm (imikandara iremereye cyane).

Fiberglass umwenda wo kugabanya ubushyuhe nintandaro yambere ya PTFE kaseti ya stabilite. Ku bushyuhe bwa PTFE (360-400 ° C), impungenge zo kuboha zisigaye. Niba bidakumiriwe, imyenda iragabanuka; niba bikumiriwe, imihangayiko yihishe ifunze, itera kugabanuka nyuma mugihe cyo gukiza (150-200 ° C) no gushyushya amaherezo. Igisubizo: koresha fiberglass yabanjirije ubushyuhe hamwe na <0.5% kugabanuka kuri 400 ° C, ukuraho imihangayiko isigaye mbere yo gutwikira.