I-PTFE high-temperature insulating gaskets yendwangu ihlanganisa amandla e-dielectric aphezulu (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.

Indwangu ye-PTFE enezinga eliphezulu lokushisa ikhiqizwa ngokufaka i-single-dip (iphasi eyodwa: esheshayo, ebiza kancane, enamathelayo emincane, indawo emagebhugebhu enezimbobo zokuphonswa) noma i-multi-dip impregnation (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.

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 (ukulahlekelwa yi-dielectric, ukwehla kwamandla kagesi), ukuwohloka kokushisa okuphansi, ukugxila kombala obuthakathaka, ukugxila okuphuzi kokucindezeleka, ukugxila okuphuzi. 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 ibangela ama-opaque, ama-rough coatings acwecwayo; i-sintering ngokweqile idala ukuphuzi, ukonakala, nokukhishwa kwegesi ye-fluoride enobuthi. Ukulungiselela inqubo: sebenzisa izilandeleli zezinga lokushisa eziko, yenza ukuhlola okubonakalayo (okungafihli lutho, okuguquguqukayo), futhi wenze izivivinyo zokudonsa itheyiphu. 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 (ongaphezulu kuka-320°C ukhipha intuthu enobuthi), gwema ama-crease abukhali (ukumbozwa kwemifantu, kuvezwa i-fiberglass), akukho ukuhlanzwa okulimazayo (uboya bensimbi bulimaza indawo enganamathi), gcina imvume yokunwebeka eshisayo (ivimbela ukudabuka), futhi ufake esikhundleni lapho kunebhamuza noma kuhlutshiwe. Isitolo sigoqiwe, kude ne-UV. Gqoka amagilavu ​​avikela ukushisa ngesikhathi sokuphatha.

Indwangu yokushisa ephezulu ye-PTFE enamandla amakhulu iyinhlanganisela ye-high-tenacity fiberglass kanye ne-PTFE coating. Izicelo ezibalulekile zithatha indawo yezimboni (ukubhaka ukudla, ukomiswa kwezindwangu, ezokuthutha ze-PCB), ukuvikelwa kwe-welding (amakhava okushisa ukushisa, izihlangu ze-spatter), ukwakhiwa nokwakhiwa kwe-hot press (ukubumba iraba, i-PV lamination), ukufakwa kukagesi (ama-motor slot liners, ukusonga kwekhebula), ulwelwesi lwezakhiwo (uphahla lwenkundla, i-anti-corrosion yamakhemikhali engama-30+) i-aerospace (izingubo zokulala ezishisayo), kanye nezicelo ezikhethekile (ukusika i-laser, ukuphrinta kwe-3D).

Ukomiswa kwangaphambili okufanele kwendwangu ye-fiberglass kubalulekile ekunambeni okulandelayo kwe-PTFE, ukufakwa kwe-resin, noma ukucwiliswa. Izindlela zokwelapha ezintathu eziyinhloko: ukususwa komswakama ku-105-120 ° C (i-10-30 min kuye ngesisindo), ukuhlanza i-dewaxing / thermal ku-300-450 ° C (LOI <0.1%, gwema> 500 ° C), nokushisa kuqala ku-60-100 ° C ngaphambi kokumboza. Lawula ukufana kwezinga lokushisa kukahhavini (±5°C), ukususwa kokuswakama okuphoqelekile, futhi uvikele izindwangu ezifakwe i-silane ngaphansi kuka-110°C. Gcina indwangu eyomile ezikhwameni ezivaliwe noma emakamelweni omile (<30°C, <40% RH).

Impilo yesevisi yendwangu yokushisa ephezulu ye-PTFE iyahluka kakhulu ngohlelo lokusebenza. I-Chemical anti-corrosion lining ingahlala iminyaka engu-3+ (4x ubude kunerabha). Amathreyi okubhaka ukudla ezinyangeni ezedlule anokonakala okuncane. Amabhande e-Industrial conveyor agqoka kusuka ku-friction. I-PV lamination (150°C, EVA contact) inempilo emaphakathi. Izinhlelo zokusebenza zokungqubuzana okukhulu (amadiski abrasive) anokuphila okufushane. Izici ezibalulekile: ukulawulwa kwezinga lokushisa (hlala ku-≤260°C), gwema ama-creases abukhali, ukuhlanzwa okuvamile, nokushintshwa okufika ngesikhathi lapho kunamabhamuza noma kubaphuzi.

Indwangu ye-PTFE ephezulu lokushisa (PTFE-coated fiberglass) ihlala isikhathi eside uma igcinwe ngaphansi kuka-260°C, kude namacrease acijile, futhi ihlanzwa ngamathuluzi athambile. Izici eziyinhloko ezikhawulela ukuphila: ukuwohloka kokushisa okungaphezu kuka-260°C, ukushaqeka okushisayo okuvela ekushiseni ngokushesha/okupholisa, ukukhathala komshini ngenxa yokugoba nokushuba, ukuhlasela kwamakhemikhali okuvela ezinsimbi ezincibilikisiwe ze-alkali noma ama-oxidizers aqinile, umonakalo ovela kuma-scrapers ensimbi ngesikhathi sokuhlanza, kanye nokuchayeka kwe-UV ukuze kusetshenziswe ngaphandle. Ikhwalithi yokugqoka kanye ne-substrate nayo ibalulekile.

Indwangu ye-PTFE yokushisa okuphezulu (i-PTFE-coated fiberglass) ilungele ukushisisa i-microwave ngoba idlulisa ama-microwave ngaphandle kokumunca amandla, imelana no-260°C, futhi inendawo enganamathele. Izicelo zihlanganisa omata bokubhaka be-microwave, amabhande omshini wokomisa wemboni, ama-reactor linings okugaya amakhemikhali, kanye nama-microwave popcorn bag liners. Amamaki e-FDA atholakalayo ukuze axhumane nokudla.