Iyi ngingo itangiza inzira yuzuye yo gutera inda ya fiberglass hamwe na emulion 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, gutema impande, guhinduranya no kugenzura ubuziranenge. Ingingo zingenzi zo kugenzura: gutembera 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 ikubiyemo ibipimo ngenderwaho byerekana imikorere ya PTFE yubushyuhe bwo hejuru ikoreshwa mu gutwikira vacuum, kuvura ubushyuhe bwa vacuum hamwe n’ibidukikije bisa. Ibisabwa byingenzi biratandukanye cyane nikoreshwa ryikirere: gusohora ni ngombwa cyane (TML≤1%, CVCM≤0.1%; amanota yo mu kirere / optique bisaba TML≤0.5%, CVCM≤0.01%); ubushyuhe bwo kurwanya ubushyuhe bugomba kugenzurwa kuri substrate ya PTFE (260 ° C) hamwe nigiti gifatika; byumwihariko wasukuwe cyane silicone ya silicone PSA irasabwa gukumira siloxane; ubushyuhe bwo hejuru bufata imbaraga birinda kunyerera no guterura inkombe; isuku isaba nta fibre yamenetse hamwe nibirimo ionic; kaseti irwanya static (irwanya ubuso 10⁶-10⁹ Ω / sq) irinda kwangirika kwa ESD; plasma irwanya igomba gusuzumwa kubikorwa / PECVD; kugabanuka k'ubushyuhe munsi ya 2% byemeza ko masking itomoye.

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 gusenyuka, 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, dichloromethylne; ether, THF), acide organic (acide glacial acetic acide, acide formique), amine na amide (triethylamine, DMF), fenol, nibindi nka karubone disulfide, pyridine, amavuta ya silicone 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 ya kristu. 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 zifite ubuso 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.

Iyi ngingo igereranya icyumba-ubushyuhe nubushyuhe bwo hejuru bwo gukura kwa silicone yumuvuduko ukabije wa kaseti ya PTFE. Gukura k'ubushyuhe bwo hejuru (120-180 ° C) bituma habaho imiyoboro ihuza imiyoboro ifite imbaraga zifatika, ikarinda ibisigazwa bifata nyuma yo kuyikuramo. Ikora imiti ihuza imiti hamwe na PTFE ikoresheje primer co-curing, ikuraho ingaruka zo gusiba. Gukura k'ubushyuhe bwo hejuru kandi bikuraho imbaraga za molekile nkeya mbere yo kubyara, bikarinda amavuta menshi ya silicone mugihe cyo gushyushya bwa mbere.

Aka gatabo karimo PTFE yubushyuhe bwo hejuru bwo gutoranya kaseti yo gutera inshinge no kurwanya anti-stick. Guhitamo bishingiye ku bushyuhe: 60260 ° C kuri plastiki rusange (kaseti ya silicone isanzwe ya PSA, 0.13-0.18mm); 260-300 ° C kuri plastiki yubushyuhe bwo hejuru yubushakashatsi nka PC, PA66, POM (yometse hejuru ya tempic silicone, 0.18-0.25mm); 300-400 ° C kuri PEEK, LCP, PPS hafi yiruka ashyushye (kaseti ifata birananirana; koresha umwenda wa PTFE udafite amavuta cyangwa firime ya PFA). Guhitamo bishingiye ku bikoresho: ibikoresho byoroshye bikenera-kurekura hejuru ya PTFE yuzuye; ibirahuri / minerval yuzuye ibikoresho bisaba uburemere-0.25mm + kaseti idashobora kwambara; inyongeramusaruro yangiza isaba imiti irwanya imiti hamwe nubutaka bwuzuye; porogaramu ihamye-ikenera anti-static umukara PTFE kaseti.

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, byangiza urunigi rwiziritse rwumunyururu lamellae nimbibi zingingo kugirango zishire 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.

Imyenda ya PTFE isize fiberglass ikoreshwa cyane mugutunganya reberi kugirango irwanye ubushyuhe bwayo, umutungo udafite inkoni, hamwe no guterana amagambo. Porogaramu z'ingenzi zirimo: kurekura imirongo ya plate / vacuum vulcanisation no kubumba amapine; imikandara ya convoyeur idakoreshwa kumashini ifunguye, kalendari, n'imirongo ikonjesha; guhuza imyenda yo kubika igice cyarangije kubikwa; uburyo bwihariye bwo gukora silicone na fluororubber; n'itanura ry'itanura ryo gukira. Inyungu zirimo kuvanaho ifumbire mvaruganda, kugabanya imikoreshereze yabashinzwe kurekura, kwirinda kuzinga, no kwemeza neza.

Amababi make asiga PTFE idashonga, itera micro-pores, gufatana nabi, hejuru yubutaka, imbaraga nke za mashini, no kugaragara kwamata. Ubushyuhe bukabije butesha agaciro PTFE, bikabyara pinholes, ibituba, ubukana, ibara ry'umuhondo-umukara, hamwe numwotsi wuburozi. Byombi byangiza ubwitonzi, imikorere idakomeye, guhinduka, kwigizayo, no guhagarara neza. Ikigereranyo cyiza 370–400 ° C gitanga igice kibonerana, cyoroshye, gitwikiriye. Kugenzura amashusho: matte yera = munsi-yacumuye; umuhondo / kuvunika = kurenza-gucumura. (Imirongo 296)