I-PTFE high-temperature insulating gaskets yendwangu ihlanganisa amandla aphezulu e-dielectric (azinzile ngaphansi komswakama), -70°C kuya ku-260°C izinga lokushisa, ukumelana kwamakhemikhali kwendawo yonke (ngaphandle kwezinsimbi ze-alkali ezincibilikisiwe), indawo enganamathele (ivimbela i-creepage), i-anti-creep (i-fiberglass reinforcement vs. μ-fiberglass reinforcement vs. Isilinganiso somlilo we-V-0. Uma kuqhathaniswa ne-mica, irabha, nama-gaskets e-PTFE ahlanzekile, indwangu ye-PTFE inikeza ukuguquguquka okuphakeme, ukucutshungulwa, nokuzinza kobukhulu besikhathi eside. Ilungele ama-transformer, ukufakwa kwezimoto, ukuvala uphawu kwamakhemikhali, kanye nemishini ye-semiconductor.

I-PTFE indwangu flatness ngesikhathi sintering kudinga ukushuba, izinga lokushisa, nokulawula ukuzibamba. Izindlela eziyinhloko: umshini we-stenter (amapuleti amaphini agcina ububanzi, avimbele ukushwabana kwe-weft), iphrofayili yezinga lokushisa eliphansi (ukushisa kancane → 380-400°C bamba → ukupholisa kancane ngaphansi kuka-310°C ngaphambi kokukhulula ukushuba), i-substrate eshwabene ngaphambili (isusa ukucindezeleka kokuluka ngaphambi kokumboza), kanye nogqinsi lokweluka okufanayo (ukuvimbela ukuncibilika kokuhlukana). Ukuvimbela okuqinile kufanele kugcinwe kuze kuphole ngaphansi kwephoyinti le-PTFE lokucwebezela (okungaba ngu-310°C) ukuze kuvinjelwe i-warpage.

Indwangu ye-PTFE enezinga lokushisa eliphezulu ikhiqizwa ngokufakwa kokucwiliswa okukodwa (iphasi eyodwa: esheshayo, eshibhile, enamathelayo emincane, indawo emagebhugebhu enezimbobo zokucwilisa) noma ukucwiliswa kokucwiliswa okuningi (amaphasi angu-2-3+: okubushelelezi, okuminyene, okungenayo iphinifa, okuqukethwe kwe-PTFE 50-70%, ukusebenza kwe-premium, izindleko eziphezulu). I-Single-dip ifanela ama-gasket ebanga eliphansi, omati besikhashana, nezinto eziphefumulayo. I-Multi-dip iyadingeka kumashidi okubhaka ebanga lokudla, amabhande okuthutha angagxili, ama-substrates esekethe yamagagasi aphezulu, amalayini amakhemikhali, nolwelwesi lwezakhiwo.

I-PTFE yokwelashwa kwendawo enezinga lokushisa eliphezulu yendwangu yephula ukungangeni kwamakhemikhali ukuze kuhlanganiswe/ukuphrinte. Izindlela ezine: ukufakwa kwamakhemikhali (i-sodium-naphthalene, amandla angaphezulu 20→ 40-50 dyn/cm, ungqimba olumnyama oluhlala njalo, isakhiwo se-micro-porous), ukwelashwa kwe-plasma (i-nano-roughening, ukuxhunyelelwa kweqembu elisebenzayo, iwindi elifushane elisebenzayo), ukwelashwa kwe-corona (ifilimu elincanyana, ukubola okusheshayo, ukujula okulinganiselwe), kanye nokwelashwa kwe-laser (ukunemba kwe-micro-patterning, ukulawulwa kwe-carbonization). Zonke izindlela zenza zibe rough ngokomzimba futhi zethule amaqembu asezindaweni ezishisayo ngamakhemikhali (C=O, -OH, -COOH) ukuze kusebenze ukunamathela kokunamathelayo.

Ukuhlanzeka kwempahla eluhlaza kuyisisekelo esiyisisekelo sekhwalithi yendwangu yezinga lokushisa eliphezulu ye-PTFE. Ukungcola (iziqalisi eziyinsalela, izinto ezisetshenziswayo, ama-ion ensimbi, ama-sizing agents angcolile) kubangela ukuwohloka kokushisa ngaphambi kwesikhathi (amabhamuza, amabhamuza angaphezu kuka-260°C), izindawo ezingabambeki ezingalingani (amaphoyinti okunamathela), ukuncishiswa kokufakwa kukagesi (ukulahleka kwe-dielectric, ukwehla kwamandla kagesi), ukuwohloka kokushisa okuphansi (kanye nombala ophuzi wokuqhekeka), ukuqina kombala ophuzi Izinto zokusetshenziswa ezimsulwa eziphezulu ziqinisekisa ukuthobela kwe-FDA, impilo ende, indwangu ye-PTFE esebenza kakhulu.

I-PTFE-coated fiberglass sintering yendwangu idinga isikhathi esinembile sokubamba ku-370-400°C. Izithando zomlilo eziqhubekayo: 30-90s (zacile) ukuya ku-3-5+ amaminithi (aminyene). Izithando zenqwaba: 5-15 min. I-under-sintering idala i-opaque, izimbotshana ezimahhadlahhadla; i-sintering ngokweqile idala ukuphuzi, ukonakala, nokukhishwa kwegesi ye-fluoride enobuthi. Ukulungiselela inqubo: sebenzisa izilandeleli zezinga lokushisa esithandweni, yenza ukuhlola okubonakalayo (okungafihli lutho, okuguquguqukayo), futhi wenze ukuhlola ukudonsa kwetheyiphu. Njalo qinisekisa ukufana kwezinga lokushisa eliwugqinsi olugcwele.

Indwangu ye-PTFE enezinga eliphezulu lokushisa idinga ukuphathwa ngokucophelela ukuze kuqinisekiswe ukuphepha nokuphila isikhathi eside. Izinyathelo zokuqapha eziyinhloko: ungalokothi udlule u-260°C (ngaphezulu kuka-320°C ukhipha intuthu enobuthi), gwema ama-crease abukhali (ama-cracks ambozwe, aveze i-fiberglass), akukho ukuhlanzwa okulimazayo (uboya bensimbi bulimaza indawo enganamathi), gcina imvume yokunwetshwa okushisayo (ivimbela ukudabuka), futhi ufake esikhundleni lapho kubhamuza noma kuhlutshiwe. Isitolo sigoqiwe, kude ne-UV. Gqoka amagilavu ​​avikela ukushisa ngesikhathi sokuphatha.

Indwangu yokushisa ephezulu ye-PTFE ibalulekile embonini yokuhlanganisa izingubo. Izicelo ezibalulekile: amabhande angapheli angapheli emishini yokuxubha eqhubekayo (avimbela ukunamathela okunamathelayo okuncibilika okushisayo, ukudlulisa okungenayo imibimbi), isembozo esinganamatheli kanye nendwangu yokugoqa yokucindezela ukushisa okuyisicaba (ivikela amapuleti ekungcolisweni okunamathelayo), amabhande okuhambisa amachashazi okunamathisela/okunamathelayo ngesikhathi sokunamathisela kwe-powder ukomisa/ukucwilisa), kanye nekhava yezicathulo zensimbi zokucindezela isampula. Ubukhulu busukela ku-0.13mm (i-padding light) kuye ku-0.55mm (amabhande okuthutha asindayo).

Indwangu ye-PTFE ye-Anti-static ifinyelelwa ngezindlela ezimbili eziyinhloko: ukumboza i-doping (ukuxuba izigcwalisi ze-conductive ezifana ne-carbon black zibe i-PTFE emulsion, ukwakha inethiwekhi ye-percolation ekugxiliseni okubucayi) kanye nokwelukwa kwe-substrate (ukushumeka imicu yokuqhuba ibe yindwangu ye-fiberglass). Ukumelana nobuso kulawulwa kokuthi 10⁵–10⁹ Ω. Umgomo: dala indlela yokuqondisa edonsa amashaji amile ngokushesha, ivimbele ukunqwabelana okuyingozi. Ukugawula kuyadingeka ukuze kusebenze ngempumelelo.

Ukomisa kuyisinyathelo esibalulekile ekukhiqizweni kwendwangu yezinga lokushisa eliphezulu ye-PTFE. Amaphutha avamile ahlanganisa: ukuqhekeka (ukoma ngokushesha okukhulu, ukucwiliswa kwesikhumba), ukuguquguquka kokumboza (izinhlayiya zithuthela phezulu, isibopho sangaphakathi esibuthakathaka), izimbobo/amabhamuza (umoya ovaleleke noma isitimu), amabala amhlophe kanye nokushova (ukufuduka kwe-surfactant noma ukuhlangana okungaphelele), ukuphuzi/ukupheka (ukushisa ngokweqile kwezithasiselo), i-delamination (i-deposion noma izinga le-orange) ukushwabana), indawo yomile kodwa ingaphakathi imanzi (isikhumba sibamba umswakama), kanye nemiphetho ewugqinsi (umphumela wendandatho yekhofi). Izixazululo zibandakanya amaphrofayili okomisa okulawulwayo, ukungena komoya ngendlela efanele, nokwelashwa kwangaphambili kwe-substrate.