Lesi sihloko sihlanganisa umehluko phakathi kwama-emulsion we-PTFE akhiqizwa yi-polymerization yokumiswa vs ukuhlakazwa kwe-polymerization. Ukucaciswa: i-polymerization yokumiswa ayikwazi ukukhiqiza ngokuqondile i-emulsion ye-PTFE; I-emulsion ye-PTFE yangempela ivela kuphela ekuhlakazweni kwe-polymerization. 'I-emulsion yendlela yokumiswa' empeleni iwukulengiswa okunamanzi kwe-ground suspension-polymerized resin micropowder. I-Dispersion polymerization (i-emulsion eyinhloko): izinhlayiya eziyindilinga (0.1-0.3μm, ukusatshalaliswa okuncane), ezinziswe ama-surfactants ane-perfluorinated, isisindo samangqamuzana aphezulu kakhulu (>94% crystallinity), i-fibrillation eqinile, idinga i-380°C sintering ukuze yenze ifilimu eqinile eqhubekayo.

Lesi sihloko sihlola umthelela wohlobo lwe-platinum catalyst kanye nokugxila ku-crosslinking kinetics yerabha ye-silicone yokwelapha. Izinhlobo ze-Catalyst: I-Speier catalyst (i-chloroplatinic acid, i-Pt⁴⁺) idinga ukuncishiswa kwezinhlobo ezisebenzayo ze-low-valent, ezisebenza njenge-precatalyst; I-Karstedt catalyst (Pt⁰ ene-divinyltetramethyldisiloxane) ingena ngokuqondile kumjikelezo we-catalytic. Imithelela yohlobo: I-Speier ibonisa isikhathi sokungeniswa esishiwo ngejika lokuphulukisa elimise okuka-S (ihamba kancane ngaphambi kwesikhathi, isheshiswe kamuva) namandla okuqalisa abonakala aphezulu; I-Karstedt ayibonisi ukungeniswa, izinga eliphezulu lokuqala eline-exotherm ebukhali, amandla okuvula aphansi.

Lesi sihloko sihlanganisa amathuba okufaka isicelo endwangu ye-Teflon enezinga eliphezulu lokushisa embonini yebhethri yesimo esiqinile esakhulayo. 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 sihlanganisa ukuxhumana komthamo phakathi kwengxenye yejeli namandla ahlangene kuzinamatheliso ezizwela ukucindezela kwe-silicone yeteyipu ye-Teflon. Ingxenye yejeli = iphesenti elikhulu lenethiwekhi exhunywe ku-crosslink engancibiliki ku-toluene (Isizinda se-Soxhlet, 24hr). Amandla ahlangene abonakala ngamandla okubamba izinga lokushisa eliphezulu (180°C, 1kg). Ububanzi obuthathu: ngezansi kwephuzu elibalulekile (<60%) — ayikho inethiwekhi ye-percolating, ebambe amandla eduze kweqanda; ububanzi obusebenzayo (60-85%) - amandla ahlangene akhula ngokuqhubekayo nge-gel ingxenyenamba, i-60% → i-70% iphakamisa isikhathi sokubamba kusukela emaminithini kuya emahoreni, 70% → 80% inikeza ukwanda okungu-3-10x; high crosslinking (>85%) — izuza kancane (85%→95% kuphela 20-50% ukwanda), tack kwehla kakhulu, >95% ulahlekelwa PSA izakhiwo.

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 kusahamba 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 sihlanganisa indlela yokufanisa izinga lokushisa lokubola kanye nengxenye yempilo ye-peroxide crosslinking agents (BPO ne-DCP) nefasitela lenqubo yokwelapha leteyipu ye-Teflon. Idatha ebalulekile: BPO — 1-minthi uhhafu wempilo ku-~131°C, ihora elingu-1 ku-~92°C, ihora elingu-10 ku-~72°C; I-DCP — iminithi elingu-1 kokuthi ~171°C, ihora elingu-1 kokuthi ~135°C, ihora elingu-10 ku-~115°C. I-logic ehambisanayo: i-adhesive idinga i-97-99% crosslinking = 5-7 impilo yesigamu; isikhathi sokuphulukisa = 5-7 × isigamu sempilo ekushiseni okuhlosiwe. Bala emuva izinga lokushisa kusukela esikhathini sokuhlala komugqa wokukhiqiza noma ubale emuva kwesikhathi ukusuka kumazinga okushisa aphezulu avumelekile.

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 siqhathanisa umehluko phakathi kokushisisa ngemisebe ye-infrared kanye nokufudumeza komoya oshisayo ekufanisweni kwesakhiwo esiphambanayo sesendlalelo sokunamathela se-silicone. Izindlela zokudlulisa ukushisa: umoya oshisayo uyi-convection-conduction, imnene futhi iqhubekela phambili, idala i-gradient yokushisa emaphakathi; I-IR iwukumunca emisebeni okumunca indawo ejulile (ama-micrometer ukuya kumamilimitha) okudala umqansa osuka phezulu uye wangaphakathi. Imithelela ekusabalaliseni kokuminyana kwe-crosslink: Umoya oshisayo uvumela izingxenye zangaphakathi nezingaphandle ukuthi zingene ebangeni lokushisa le-vulcanization cishe ngasikhathi sinye, zinikeze ukuminyana okufanayo kwe-crosslink ngokujiya; I-IR ibangela ungqimba olungaphezulu lwelaphe ukwakheka kwesikhumba esiminyene ngaso leso sikhathi esivimbela ukudluliswa kokushisa, okuholela ekwehleni kwe-gradient ebukhali yokuminyana kwe-crosslink kusuka phezulu kuya ngaphakathi.