Iyi ngingo itangiza inzira yibanze yo gutera inda ya fiberglass hamwe na emulioni ya PTFE. Intambwe ndwi zingenzi: ret Kwitegura (dewaxing / desizing) kuri 350-400 ° C kugirango ukureho imyenda ingana; Formul Amuliyoni hamwe na 40-55% yibirimo bikomeye hamwe na surfactants zo kunoza neza; Gutera inda hakoreshejwe uburyo bwo kwibiza cyangwa gutwikira umuganga; Kuma kuri 100-150 ° C kugirango umwuka uhumeke neza hanyuma ukore firime yumye ya PTFE; Gutera kuri 360-390 ° C (kugeza kuri 400 ° C) gushonga ibice bya PTFE muri firime ikomeza; I Inzinguzingo nyinshi-inregnation-yumye-gucumura inshuro 2-4 kugirango ugere kubyimbye bigenewe hamwe na resin (45-65%); ⑦ Nyuma yubuvuzi burimo kuvura corona, gutunganya inkombe, guhinduranya no kugenzura ubuziranenge. Ingingo zingenzi zo kugenzura: gutonyanga byuzuye, guhanagura kwa emulsiyo yuzuye, gukama buhoro buhoro, ubushyuhe bwuzuye bwo gucumura, hamwe nuburinganire bwuzuye. Ibicuruzwa bitanga umurongo mwinshi wumuringa wambaye laminates, imikandara yubushyuhe bwo hejuru hamwe nibikoresho byububiko.

Iyi ngingo irerekana ibishishwa kama PTFE imyenda yubushyuhe bwo hejuru ishobora kwihanganira. Imyenda ya PTFE isize fiberglass yerekana ubudahangarwa budasanzwe bwa chimique, irwanya hafi yumuti rusange usanzwe mugihe cyakazi gisanzwe nta gusesa, kubyimba cyangwa imiti. Ibyiciro byihanganirwa birimo: alcool (methanol, Ethanol, isopropanol), ketone (acetone, MEK, cyclohexanone), esters (Ethyl acetate, butyl acetate), hydrocarbone (lisansi, toluene, xylene, hexane), hydrocarbone ya diyorogoro (dichloromethane) ether, THF), acide organic (acide glacial acetique, acide formique), amine na amide (triethylamine, DMF), fenol, nibindi nka karubone disulfide, pyridine, amavuta ya silicone hamwe na feri ya feri.

Iyi ngingo ikubiyemo igipimo cyo gukonjesha mugihe cya PTFE yubushyuhe bwo hejuru. Nyuma yo gucumura kuri 380-400 ° C, umwenda ugomba guhita unyura muri 310-315 ° C ahantu horoheye. Igipimo cyo gukonjesha gisabwa nibura 30-50 ° C / min (umwenda muto urashobora kugera kuri 100-200 ° C / min ukoresheje gukonjesha ikirere). Gukonjesha byihuse (kuzimya) bitanga ububobere buke (45-50%), butanga impuzu zoroshye, zikomeye hamwe nubuso bworoshye, gufatana gukomeye, gukora neza kutari inkoni, no kurwanya gusiba no guturika. Gukonjesha gahoro (gukonjesha itanura) bivamo kristu nyinshi (60-70%), bigatera impuzu zikomeye, zoroshye zoroshye kugabanuka, gukuramo na microcrack.

Imyenda myinshi ya PTFE yubushyuhe bwo hejuru ikozwe mugusiga PTFE kumyenda ikomeye ya fiberglass, itanga imbaraga zingana, kurwanya ubushyuhe, ibintu bidafite inkoni, kurwanya imiti, hamwe no guterana amagambo. Ibyingenzi byingenzi birimo: gutanga inganda (gupakira ubushyuhe, gupakira ibiryo, kumisha imyenda, impapuro / gukama firime); guhimba ibishushanyo bisohora imyenda hamwe no gukanda bishyushye; gusudira imyenda ikingira hamwe namakoti yo kubika ubushyuhe; moteri y'amashanyarazi na insimburangingo; kubaka ibyuma bitembera hamwe n'inkunga y'umuyoboro; gushungura imiti hamwe na valve bifunga ibidukikije byangirika. Imbaraga zingana zituma umuntu aramba mugihe cyo guhagarika umutima, kurira, guhindagurika inshuro nyinshi, hamwe nubushyuhe bwo hejuru bwubushyuhe bwo hejuru murwego rwo hejuru rukomeye.

Mugihe cyo gucumura, ibice bya PTFE kumyenda ya fiberglass bishonga hejuru ya 327 ° C, bigasenya umwimerere wafunzwe-urunigi lamellae nimbibi zingana kugirango bibe amorphous. Iyo imaze gukonja, PTFE yongeye kwisubiramo muri spherulite igizwe na lamellae yerekanwe na radiyo, hamwe na kristu ya 50-70%. Igipimo cyo gukonjesha kigena gutunganirwa neza: gukonjesha buhoro bitanga kristu nyinshi, spherulite nini, ubukana bwinshi; kuzimya byihuse bitanga spherulite nziza kandi byoroshye guhinduka.

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

Imyenda yubushyuhe bwo hejuru ya PTFE ikomatanya gasketi ihuza imbaraga za dielectric (itajegajega munsi yubushuhe), -70 ° C kugeza kuri 260 ° C yubushyuhe, kurwanya imiti yisi yose (usibye ibyuma bya alkali byashongeshejwe), hejuru yinkoni (birinda creepage), anti-creep (fiberglass reinforcement vs. PTFE), imbaraga zingana, 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.

Imyenda ya PTFE mugihe cyo gucumura bisaba guhagarika neza, ubushyuhe, no kugenzura. Uburyo bwibanze: imashini ya stenter (isahani ya 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 (kwizirika ahantu hakeye), intege nke zumukanishi (kwibanda ku guhangayika, gutanyagura), guhungabana kwamashanyarazi (kugabanuka kumashanyarazi kumanuka kugera kuri 1/10), kwinjiza imiti (kwangirika kwa pinhole), ibibazo bipima (warpage), hamwe nubusembwa butunganijwe (kuzenguruka umukandara, gutandukana mubyimbye). Ipitingi imwe isaba kugenzura neza ubwiza bwa emulsiya, ibirimo bikomeye, impuzu yimyenda, gukanda icyuho, hamwe na zone nyinshi yumisha / umwirondoro.

Imyenda ya PTFE yubushyuhe bwo hejuru ihura nintambwe enye zimpinduka 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.