Lesi sihloko sihlanganisa amathuba okufaka isicelo endwangu ye-Teflon enezinga eliphezulu lokushisa embonini yebhethri yesimo esiqinile evelayo. Izindawo ezine: Ukukhiqizwa kwe-electrode eyomile/ulwelwesi lwe-electrolyte - amabhande okuhambisa e-anti-stick aphezulu okucindezela i-hot roll (150-250°C) okwenza ukuxebuka okushelelayo kwamafilimu azisekelayo; Isendlalelo se-roller esishisayo njengesendlalelo se-anti-stick esingapheli; iqinisekisa ubuso befilimu obushelelezi, inciphisa amaphutha, ithuthukise isivuno. Khipha ama-liner nama-cushioning pads for hot-pressing densification — amabhethri e-sulfide/polymer adinga ukucindezela okushisayo kwe-isostatic/flat (100-300°C, amashumi e-MPa); Indwangu ye-PTFE ebekwe phakathi kwesitaki sebhethri nesikhunta ivimbela ukunamathela, inika amandla ukusatshalaliswa kwengcindezi efanayo nge-micro-elasticity, ivikela amapuleti okushisa.

Lesi sihloko sihlola izinguquko kumaketanga e-molecular PTFE ngaphansi kwemisebe ye-ultraviolet. I-Main-chain scission kanye nokunciphisa isisindo samangqamuzana: I-UV (254nm, 471 kJ/mol) iphula amabhondi e-CC (347 kJ/mol), okubangela i-homolysis, ikhiqize ama-radicals mahhala anqanyulwe yi-CF₂, ukwehla kwesisindo samangqamuzana abukhali, ukuncipha kokuqina nobude. Izindlela zamahhala zokusabela kwe-radical: ku-oxygen, ifomu le-peroxy radicals, ukuhlela kabusha ku-acyl fluoride (-COF) kanye namaqembu okuphela kwe-carboxylic acid (-COOH), ikhulula i-COF₂ ne-CO₂ (i-COF₂ hydrolyzes ku-HF); emkhathini ongenayo, ukuhlukana/ukuhlanganisa kuyabusa, kodwa ukuhlukana kweketango kuhlala kuhamba phambili.

Lesi sihloko sihlanganisa ukusetshenziswa kwendwangu ye-Teflon eshisa kakhulu emazingeni okushisa e-spacesuit. Ingqikithi yezinto: Indwangu ye-fiberglass ehlanganiswe ne-PTFE, eyaziwa emkhathini njengendwangu ye-Beta, ehlanganisa ukuguquguquka kwendwangu ne-PTFE ukungabi namandla okwedlulele kwemvelo. Indima: ungqimba olungaphandle lwe-Thermal Micrometeoroid Garment (TMG) kumayunithi ahambayo e-extravehicular, abheke ngqo i-vacuum, umehluko okushisa okweqile, nama-micrometeoroids njengesithiyo sokuqala esibonakalayo/ esishisayo samafilimu angaphakathi e-aluminium. Ukuvikelwa kwemvelo okwedlulele: imelana -200°C kuya +260°C ububanzi (ibheke elangeni>120°C kuya ethunzini -160°C); indawo emhlophe ibonisa imisebe yelanga; ivikela amafilimu e-aluminium enziwe nge-polyimide antekenteke ekuklwebheni nasezinyembezini. Usizo lokunyakaza: indawo ephansi ye-PTFE yokungqubuzana ivimbela ukugoqa kongqimba ngesikhathi sokugoba, iqinisekisa ukuguquguquka kwe-EVA.

Lesi sihloko sihlanganisa izinzuzo zohlelo lokusebenza lwendwangu ye-Teflon enezinga eliphezulu lokushisa ekomisweni kwe-electrode yebhethri ye-lithium. Isetshenziswa njengamabhande okuthutha noma amalayini kahhavini, ixazulula izinkinga ezintathu ezibalulekile: ukunamathela okunodaka, ukugqwala, nokuklwebheka kwe-electrode. Izindawo ezine ezizuzisayo: Ikhwalithi ye-Electrode kanye nesivuno - izakhiwo zokulwa nenduku zivimbela ukunamathela kwe-PVDF okuhlanganisa ukwenza kube lula ukuxebuka okuphelele; i-uniform conductivity thermal conductivity ku-100-140 ° C ivimbela ukuqhekeka / ukushisa; ubuso obushelelezi buqeda imihuzuko kanye nokuchithwa kwempushana; Ukuqina nokuqina kokusebenza - ukumelana kwamakhemikhali ngokumelene ne-NMP solvent kanye ne-electrolyte vapors ngaphandle kokuvuvukala / ukuguga; amandla aphezulu okudonsa kanye nokuzinza kwe-dimensional kusuka ku-fiberglass substrate ukuze kumiswe kahle; ukuhlanza okulula okunensalela encane uma kuqhathaniswa namabhande anezikhala zensimbi.

Lesi sihloko sifaka ububanzi besivinini somugqa ojwayelekile womugqa wokukhiqiza wendwangu we-PTFE wezinga lokushisa eliphezulu. Isivinini esijwayelekile: 2-15 m/min, ububanzi bokusebenza obuzinzile 3-8 m/min, izindwangu ezincane/imigqa yesivinini esiphezulu kufika ku-10-15 m/min. Imikhawulo ekungeneni kokungena: Indwangu kufanele igcwale ngokugcwele nge-PTFE emulsion ibe yizigaxa ze-fiber zangaphakathi - isivinini esikhulu sibangela ukungatheleleki okwanele, ukulamba kwe-resin kanye nemicu eyomile; i-emulsion viscosity, ukugxila kokuqinile, ukuminyana kwendwangu yendwangu konke kunciphisa izinga lokungena, okudinga isivinini esincane sezindwangu eziwugqinsi/eziminyene. Ukudlula kwe-Coating: amaphasi amaningi (2-6+) adingekayo ukuze kuhlanganiswe okungenasici; iphasi yokuqala ihamba kancane ukuze ibambelele, amaphasi alandelayo anganyuswa ngokulingene.

Lesi sihloko sihlanganisa okuqukethwe kwe-silica kanye nezimo zokusetshenziswa kwendwangu yengilazi ye-silica ephezulu. Ukucaciswa kokuqukethwe kwe-silica: inkomba eyinhloko yi-SiO₂ ≥96% (i-96-98% evamile, amamaki e-premium> 99% nge-acid leaching kanye ne-sintering, isondela ku-quartz fiber ehlanzekile). Ukukhiqiza: Indwangu yengilazi ye-E iphuma i-asidi eshisayo ukuze incibilikise izingxenye ezingezona i-silica (i-boron oxide, i-sodium oxide), idale uhlaka lwamathambo oluyizimbotshana oluphezulu lwe-silica, bese lucwiliswa ukuze luminyene. Izinzuzo ezibalulekile: isevisi eqhubekayo ku-900°C endaweni ene-oxidizing, yesikhathi esifushane ngaphezu kuka-1200°C, indawo yokuthambisa eduze kuka-1700°C; ukuzinza kwamakhemikhali ngokumelene nama-acids / alkali amaningi ngaphandle kwe-HF ne-hot phosphoric acid; ukufakwa kwe-dielectric okuphansi kanye nokuqina okuzinzile emazingeni okushisa aphezulu.

Lesi sihloko sihlanganisa i-delamination phenomenon yendwangu ye-Teflon ephezulu yokushisa. I-Delamination isho ukuhlukana nokuxebuka phakathi kwengubo ye-PTFE engaphezulu kanye nendwangu eyisisekelo ye-fiberglass yangaphakathi noma phakathi kwezingqimba eziningi zokuhlanganisa. Ukubonakaliswa okubonakalayo: amabhamuza/amabhamuza (amabhamuza aphakanyisiwe anomuzwa ongenalutho) njengezimpawu zokuqala; ukucwecwa kwe-interlayer nge-coating kususwa kalula kumashidi aveza i-fiberglass emhlophe; ukwenza mhlophe okwenziwe kwasendaweni okulandelwa ukucwayiza ngemva kokushisa/ukungqubuzana. Izimbangela eziyinhloko: Ukulimala kokucindezeleka okushisayo - ama-coefficients ahlukene okunweba okushisayo phakathi kwe-PTFE ne-fiberglass kudala ukucindezeleka kwangaphakathi, imijikelezo yokushisa / yokupholisa esheshayo ibangela ukuhlukana; Ukukhubazeka kwekhwalithi yokukhiqiza — ukwelashwa kwendawo ye-fiberglass enganele, ukungamiliswa kahle kwe-PTFE, ukucwiliswa okunganele okubangela ukuhlangana okubuthakathaka kobuso.

Lesi sihloko sichaza izici ze-microstructural zendwangu ye-Teflon ephezulu yokushisa. I-Substrate skeleton: i-glass fiber weaving ukuthungwa kwe-plain/twill weave ene-porosity ephezulu (izimbotshana zesikali se-micron ngaphakathi kwenqwaba yefayibha kanye nasemakhaleni e-warp-weft) okunikeza isikhala sokumilela kwe-PTFE. I-Coating morphology: i-impregnation encapsulation egcwele yenza isakhiwo 'ukhonkolo oqinisiwe' lapho imicu yengilazi iyisigaba sokuqinisa, i-PTFE iyi-matrix eqhubekayo; i-surface nodular microstructure yama-nodules (izinhlayiya) ezixhunywe ama-fibrils amahle akhiwe ngesikhathi sokucwiliswa; ungqimba lwesikhumba oluminyene oluqhubekayo (okumbalwa kuya kwamashumi ama-microns awugqinsi) we-PTFE emsulwa njengesithiyo esiyinhloko sokungangeni kwamakhemikhali, izakhiwo ezinganamatheli, nokufakwa kukagesi.

Lesi sihloko sihlola izinguquko zesakhiwo kwindwangu ye-PTFE ephezulu yokushisa ngesikhathi sokuguga. Izici ezine: PTFE enamathela microstructure — molecular chain scission and oxidation (carbonyl/carboxyl group ukwakheka), crystallinity izinguquko (ukuvuka ekuseni bese kuyawa), micro-crack kanye pinhole ukwakheka, surface powdering; I-fiber substrate yengilazi nesixhumi esibonakalayo — ukubola kosayizi/okuhlanganisayo okubangela ukulahleka kwesibopho, ukuqaqanjiswa kobuso kanye ne-delamination (amabhamuza, izindawo ezimhlophe), ukuguguleka kwenethiwekhi ye-glass fibre kanye ne-embrittlement, imvula ye-alkali metal oxide ebangela ukugqwala kwengcindezi; Ukwakheka nokubukeka kwe-macroscopic — ukushintsha kombala (omhlophe→obeige→onsundu→omnyama), ukuwohloka kokuncipha nokugoqeka, ukonakala kwendawo kanye nokulahlekelwa isicwebezelisi, ukuba yimpuphu lapho uthintwa, ukulahlekelwa ngokuphelele ukuguquguquka. Ingqikithi yokuguga: inqubo eqhubekayo 'yokonakaliswa kokumboza → ukwehluleka kwesixhumi esibonakalayo → ukuwohloka kwe-substrate.'

Lesi sihloko sihlanganisa indlela yokulawula isikhathi se-sintering sendwangu ye-PTFE ephezulu yokushisa. Indlela yokulawula eyinhloko: ukulungiswa kwesivinini somugqa. Isikhathi sokushisisa = ubude besigaba sokushisisa esisebenzayo ÷ isivinini sokuhamba kwendwangu. I-sintering threshold esebenzayo ingu-350°C (ngaphezulu kwaleli zinga lokushisa libalwa njengesikhathi sokushisa). Ukusabalalisa izinga lokushisa kwezindawo eziningi: ukushisa ngaphambili (100-250°C), i-sintering (360-395°C), ukulungiselelwa kwezinga lokushisa eliphezulu (380-390°C), ukupholisa (ngaphansi kuka-300°C). Izikhathi zokubhekisela ku-380-390 ° C: engasindi (0.08-0.13mm) imizuzwana engu-30-60; ejwayelekile (0.18-0.25mm) 1.5-3 imizuzu; isisindo (≥0.35mm) imizuzu engu-3-5. Ukuhlonza nokulungiswa: i-sintering ngaphansi (amandla aphansi, ukuchithwa kwempushana, imifantu emincane) → nciphisa isivinini ukuze kwandiswe isikhathi; i-sintering ngokweqile (iphuzi, i-brittleness, intuthu emhlophe) → khulisa isivinini ukuze unciphise indawo yokuhlala. Ukulingana kwesikhathi sezinga lokushisa kuvumela ukucwiliswa kwezinga lokushisa okuphezulu (395-405°C, imizuzwana) noma ukucwiliswa kancane kwezinga lokushisa eliphansi (360-375°C, amaminithi angu-5-8).