Iyi tekinike ngufi ya Jiangsu Aokai isesengura uburyo ubushyuhe bukabije cyangwa bukabije bwangiza PTFE igitambaro cyo hejuru. Gucumura gake gusiga ibice bidashongeshejwe, bigatera micro-pore, guhuza imbaraga-substrate guhuza, hejuru yimiterere, imbaraga zumukanishi, no kugaragara kwamata. Ubushyuhe bukabije butera PTFE kwangirika k'ubushyuhe, kubyara pinholes, ibibyimba, ubukana, ibara ry'umuhondo-umukara, no kurekura imyotsi y'ubumara. Izi ntagondwa zombi zisenya ubwitonzi, imikorere idakomeye, guhinduka, guhindagurika, no guhagarara neza.

Imyenda yubushyuhe bwo hejuru ya PTFE ikomatanya gasketi ihuza imbaraga nyinshi za dielectric (itajegajega munsi yubushuhe), -70 ° C kugeza kuri 260 ° C yubushyuhe bwubushyuhe, kurwanya imiti yisi yose (usibye ibyuma bya alkali byashongeshejwe), hejuru yinkoni (birinda kunyerera), anti-creep (imbaraga za fiberglass imbaraga na PTFE yera), imbaraga zingana cyane, 0 / 0-0. Ugereranije na mika, reberi, hamwe na gaseke ya PTFE isukuye, umwenda wa PTFE utanga ibintu byoroshye guhinduka, gutunganywa, hamwe nigihe kirekire cyo guhagarara. Nibyiza kuri transformateur, moteri ya moteri, gufunga imiti ya flange, nibikoresho bya semiconductor.

Ibiciro bya emulioni ya PTFE biterwa nibintu murwego rwinganda zose. Ibiciro byo hejuru (ubucukuzi bwa fluor, ibipimo bya firigo R22) bishyiraho igiciro fatizo. Ibisabwa munsi ya batiri ya lithium ni yo shingiro ryambere ryiterambere. Gutanga ibintu (igipimo cyibikorwa byinganda, gufata neza ibihingwa) hamwe nubwiza bwibicuruzwa (ibirimo bikomeye, ingano yingirakamaro, igipimo cyera) birema ibiciro. Amabwiriza y’ibidukikije (PFOA / PFAS ibuza) kuzamura ibiciro byubahirizwa. Ibikoresho (gutwara imbeho ikonje) byongera amafaranga akomeye. Ibiciro bigenda bikurikiza ibitekerezo byingenzi: fluorite / hydrofluoric aside igiciro = hasi; ingufu za batiri zikenewe = icyerekezo cyerekezo; igipimo cyimikorere na politiki = imbarutso yigihe gito.

PTFE kaseti ya miyoboro / imiyoboro irwanya ruswa, idafite inkoni, hamwe no kurinda kashe bisaba guhuza substrate, sisitemu yo gufatira hamwe, hamwe nibitangazamakuru byimiti. Silicone PSA irasabwa 200-260 ° C hamwe na acide / alkalis; acrylic PSA irwanya ibishishwa kama ariko igabanya ubushyuhe kuri ≤150 ° C. Kuri HF, guteka> 80% alkali, cyangwa chlorine trifluoride, koresha umurongo wa PTFE gusa (nta gufatira kama). Icyitonderwa: ibifatika ni ihuriro ridakomeye, ntabwo PTFE ubwayo.

Imyenda ya PTFE mugihe cyo gucumura bisaba guhagarika neza, ubushyuhe, no kugenzura. Uburyo bwibanze: imashini ya stenter (plaque pin igumana ubugari, irinde kugabanuka kwa weft), ubushyuhe bwikigereranyo (ubushyuhe buhoro → 380-400 ° C gufata → gukonjesha buhoro munsi ya 310 ° C mbere yo kurekura impagarara), substrate yabanje kugabanuka (ikuraho impungenge zo kuboha mbere yo gutwikira), hamwe nuburinganire bwububiko bumwe (birinda gushonga gutandukanye). Kwifata neza bigomba gukomeza kugeza bikonje munsi ya PTFE ya kristu (hafi 310 ° C) kugirango wirinde intambara.

Kwambika uburinganire mugihe cya PTFE emulsiyasi yimyenda ya fiberglass nubuzima bwiza bwibicuruzwa. Impamvu zidahwanye zitera: kunanirwa kudakomeye (gukomera ku mwanya muto), intege nke za tekinike (kwibanda ku guhangayika, gutanyagura), guhungabana kw'amashanyarazi (kugabanuka kwa voltage kumanuka kugera kuri 1/10), kwinjira mu miti (kwangirika kwa pinhole), ibibazo bipima (warpage), hamwe no gutunganya inenge (kuzerera umukandara, gutandukanya umubyimba). Igipfundikizo kimwe gisaba kugenzura neza ubwiza bwa emulsiyo, ibirimo bikomeye, impuzu yimyenda, gukuramo icyuho, hamwe na zone nyinshi yumisha / umwirondoro.

PTFE kaseti ifata imbaraga itezimbere hakoreshejwe gutwikira no gukiza inzira nziza. Igipfundikizo: primer layer (0.5-2μm silane primer irinda gukuramo ibishishwa), uburebure bwa 30-60 mm (byiza gufata imbaraga), kwanduza vacuum, no kuyungurura 5-10 mm. Gukiza: gushyushya intambwe (80-100 ° C gukuramo ibishishwa → 120-140 ° C gushiraho → 150-220 ° C guhuza byimbitse), gukira nyuma (40-60 ° C kuri 24-48h kugirango ugabanye imihangayiko), hamwe no gutwarwa nubushyuhe buke kugirango wirinde guhangayika imbere kugabanuka. Primer ningirakamaro kububasha buke bwa PTFE.

Imyenda yubushyuhe bwo hejuru ya PTFE ikora ibyiciro bine byimpinduka zuburyo uko ubushyuhe buzamuka: munsi ya 260 ° C - gahoro gahoro-guturika no guhindagurika kwinyongera; kuri 327 ° C (gushonga) - kristaline-kuri-amorphous inzibacyuho, gutwikira byoroshe, biva muri fiberglass; 400-500 ° C - PTFE depolymerize (irekura imyuka yubumara), igifuniko kirashira; hejuru ya 500 ° C - fiberglass yoroshya (840 ° C yoroshye) kandi itakaza ubunyangamugayo. Guma munsi ya 260 ° C uhoraho, irinde> 300 ° C impinga kugirango ikore neza.

Imyenda ya PTFE yubushyuhe bwo hejuru ikorwa hifashishijwe gutera inshuro imwe (pass imwe: yihuta, igiciro gito, igifuniko cyoroshye, hejuru yikinini hamwe na pinholes) cyangwa gutera inshuro nyinshi (2-3 + passes: yoroshye, yuzuye, ipine idafite pinhole, ibirimo PTFE 50-70%, imikorere yambere, igiciro kinini). Kwibiza-umwe bikwiranye gasketi yo mu rwego rwo hasi, matelo yigihe gito, nibikoresho bihumeka. Multi-dip irakenewe kumpapuro zo gutekesha ibyokurya, imikandara ya convoyeur idafite inkoni, insimburangingo yumuzunguruko mwinshi, imirongo yimiti, hamwe nubwubatsi.

PTFE yimyenda yubushyuhe bwo hejuru ivura ubusembwa bwimiti yo guhuza / gucapa. Uburyo bune: gufata imiti (sodium-naphthalene, ingufu zubutaka 20 → 40-50 dyn / cm, igicucu cyijimye gihoraho, imiterere ya micro-porous), kuvura plasma (nano-roughening, gukora amatsinda akora, idirishya rigufi), kuvura corona (firime yoroheje, kubora vuba, ubujyakuzimu buke), no kuvura lazeri (micro-patterning, kugenzura karubone). Uburyo bwose bwakomanze kumubiri no muburyo bwa shimi butangiza amatsinda ya polar (C = O, -OH, -COOH) kugirango ashoboze guhuza.