Ibikoresho bitanduye ni ishingiro ryibanze rya PTFE yubushyuhe bwo hejuru. Umwanda (abatangiriyeho ibisigisigi, surfactants, ion ibyuma, ibikoresho byanduye byanduye) bitera kwangirika kwubushyuhe bwigihe kitaragera (ibibyimba, guhuha hejuru ya 260 ° C), hejuru yumutambiko udafite inkoni (ingingo zifatika), kugabanya amashanyarazi (gutakaza dielectric, voltage yamenetse hasi), imbaraga zumukanishi (guhangayikishwa no guhagarika umutima). Ibikoresho fatizo byera cyane byemeza FDA-yubahiriza, kuramba, imyenda ya PTFE ikora cyane.

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.

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 (gutwikiriye ibice, byerekana fiberglass), ntugire isuku ikabije (ubwoya bwibyuma byangiza ubuso butari inkoni), kubika ububiko bwagutse bwumuriro (birinda gushwanyagurika), kandi bigasimburwa mugihe byavunitse cyangwa bikonje. Ububiko bwazungurutse, kure ya UV. Wambare uturindantoki twangiza ubushyuhe mugihe cyo gukora.

Imyenda ya PTFE yubushyuhe bwo hejuru ifite coefficient 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 gukomeretsa, 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 ushyireho igishushanyo mbonera cyo kurwanya. Kugenzura buri gihe imbeho ni ngombwa.

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 (ibihumbi byikiziga, byoroshye koza), 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 iherezo kumashini ikomeza guhuza (irinda gushonga gushushe gufatana, kwizirika ku minkanyari), gupfundikira inkoni hamwe nigitambaro cyo gupakira kumashanyarazi ashyushye (kurinda platine kwanduza), umukandara wa convoyeur utudomo twa paste / ifu yipfundikizo mugihe cyo gukama / gushiramo icyuma). Umubyimba uri hagati ya 0.13mm (padi yoroheje) kugeza 0.55mm (imikandara iremereye cyane).

Imyenda irwanya static ya PTFE igerwaho hakoreshejwe uburyo bubiri bwingenzi: gutwikira doping (kuvanga ibyuzuza ibintu nka karuboni yumukara muri emulioni ya PTFE, gukora umuyoboro wa percolation kuri concentration ikomeye) hamwe no kuboha insimburangingo (gushyiramo fibre ikora mumyenda ya fiberglass). Kurwanya ubuso bigenzurwa kuri 10⁵ - 10⁹ Ω. Ihame: shiraho inzira iyobora itwara ibicuruzwa bihagaze ako kanya, birinda kwirundanya kwangiza. Impamvu ni itegeko kubikorwa byiza.

Imyenda yubushyuhe bwo hejuru ya PTFE (fibre yububiko bwa PTFE) itanga imiti idasanzwe yo kurwanya imiti, hamwe na acide yibanze (harimo na aqua regia), alkalis ikomeye (mubushyuhe bwicyumba), ibishishwa kama, hamwe na okiside. Ibidasanzwe: ibyuma bya alkali byashongeshejwe hamwe nubushyuhe bwo hejuru bwa halogene yibasira PTFE. Kwangirika kwifata byerekana fiberglass kuri acide hydrofluoric na alkalis zishyushye cyane. Ubushyuhe buri hejuru ya 260 ° C bugabanya kurwanya. Kubintu byinshi byimiti, imyenda ya PTFE ikomeza guhagarara neza kandi yizewe.

Kuma nintambwe ikomeye mubikorwa bya PTFE yubushyuhe bwo hejuru. Inenge zisanzwe zirimo: guturika (gukama vuba cyane, uruhu rwo hejuru), kwimuka kwimuka (ibice byimuka hejuru, guhuza imbere imbere), pinholes / ibisebe (umwuka wafashwe cyangwa umwuka), ibibara byera hamwe na chalking (kwimuka kwa surfactant cyangwa fusion ituzuye), umuhondo / kokiya (gushyuha cyane) ariko imbere imbere (uruhu rwo gufata imitego yubushyuhe), nimpande zimbitse (ingaruka yikawa-impeta). Ibisubizo bikubiyemo imyirondoro yumye, guhumeka neza, hamwe no kwitegura.

PTFE emulsiyasi yimyenda ya fiberglass isaba abafasha batandukanye kugirango bagere kumyenda imwe, gufatana gukomeye, hamwe nubuso butagira inenge. Ibintu byingenzi byongeweho harimo: ibikoresho byo guhanagura (kugabanya ubukana bwubutaka, kunoza kwinjira), kubyimbye (kugenzura ububobere nuburemere bwa coating), kugenzura pH (guhagarika emulioni kuri pH 9-10), ibikoresho byo guhuza silane (kongera imbaraga kumirahuri), imfashanyo zikora firime (PFA / FEP yo gucumura), kuzuza imikorere (kwangirika kwangiza) Guhitamo biterwa na substrate nibisabwa.