Xihloko lexi xi katsa ku yelana ka nhlayo exikarhi ka xiphemu xa gel na matimba yo hlangana eka swinamarheti leswi twaka ntshikelelo wa silicone swa thepi ya Teflon. Xiphemu xa gel = tiphesente ta vukulu bya crosslinked network leyi nga nyawuriki eka toluene (Soxhlet extraction, 24hr). Matimba yo hlangana lawa ya tivekaka hi matimba yo khoma ya mahiselo yale henhla (180°C, 1kg). Ti range tinharhu: ehansi ka critical point (<60%) — ku hava percolating network, ku khoma matimba ekusuhi na zero; practical range (60-85%) — matimba yo hlangana ya kula hi xihatla na xiphemu xa gel, 60%→70% yi tlakusa nkarhi wo khoma kusuka eka timinete kuya eka tiawara, 70%→80% yinyika ku tlakuka ka 3-10x; high crosslinking (>85%) — gains slow (85%→95% ntsena 20-50% yi tlakuka), tack yi hunguteka swinene, >95% yi lahlekeriwa hi swivumbeko swa PSA.

Xihloko lexi xi kambisisa ku cinca eka tikhetane ta timolekhuli ta PTFE ehansi ka miseve ya ultraviolet. Main-chain scission xikan’we naku hunguta ntiko wa molecular: UV (254nm, 471 kJ/mol) yi tshoveka ti CC bonds (347 kJ/mol), leswi endlaka leswaku kuva na homolysis, leswi humesaka CF2-terminated free radicals, ku hunguteka lokukulu ka ntiko wa molecular, ku lahlekeriwa hi ku tiya na ku leha. Tindlela ta ku angula ka ti-free radical: eka okisijini, ti- peroxy radical ti vumbiwa, ti tlhela ti hleriwa ku va mintlawa ya makumu ya acyl fluoride (—COF) na carboxylic acid (—COOH), ti humesa COF2 na CO2 (COF2 yi hydrolyzes ku ya eka HF); eka ti atmospheres letinga tirhiki, disproportionation/recombination yi lawula, kambe chain scission yitshama yiri kona ngopfu.

Xihloko lexi xi katsa ku tirhisiwa ka lapi ra Teflon ra mahiselo yale henhla eka ti spacesuit thermal insulation layers. Nkoka wa swilo: Lapi ra fiberglass leri pfanganisiweke na PTFE, leri tivekaka eka aerospace tani hi lapi ra Beta, leri hlanganisaka ku olova ka lapi na PTFE extreme-environment inertness. Ntirho: leyara ya le handle swinene ya Thermal Micrometeoroid Garment (TMG) eka tiyuniti ta ku fambafamba ka le handle ka movha, leyi langutaneke hi ku kongoma eka vacuum, ku hambana ka mahiselo yo tlula mpimo, na ti micrometeoroids tanihi xisirhelelo xo sungula xa physical/thermal eka tifilimi ta le ndzeni leti aluminized. Nsirhelelo lowukulu swinene wa mbango: wu tiyisela -200°C kuya eka +260°C range (yi langutane na dyambu >120°C kuya eka ndzhuti -160°C); vuandlalo byo basa byi kombisa miseve ya dyambu; yi sirhelela tifilimi ta polyimide ta aluminized leti nga tiyangiki eka ku khwaxa na ku handzuka. Mpfuneto wa ku famba: low friction PTFE surface yi sivela layer tangling hinkarhi wa joint bending, ku tiyisisa ku olova ka EVA.

Xihloko lexi xi katsa swipfuno swa ku tirhisiwa ka lapi ra mahiselo yale henhla ya Teflon eka ku omisiwa ka electrode ya betri ya lithium. Yitirhisiwa tani hi conveyor belts kumbe ti oven liners, yi tlhantlha swiphiqo swinharhu swa nkoka: ku namarhela ka slurry, corrosion, na electrode scratching. Tindhawu ta mune leti pfunaka: Khwalithi ya electrode na mbuyelo — swivumbeko swa anti-stick swi sivela ku namarhela ka PVDF binder leswi endlaka leswaku ku olova ku rhurhumela loku heleleke; uniform thermal conductivity eka 100-140°C yi sivela ku pandzeka/ku hisa; xivumbeko xo olova xi herisa ku khwaxa na ku khuluka ka powder; Ku tiya na ku tiya ka ntirho — ku lwisana na tikhemikhali eka NMP solvent na electrolyte vapors handle ko pfimba/ku dyuhala; matimba yale henhla ya tensile xikan’we naku tiya ka dimensional kusuka eka fiberglass substrate kuva ku vekiwa kahle; ku basisiwa ko olova hi masalela nyana loko ku pimanyisiwa na mabandhi ya mesh ya nsimbi.

Xihloko lexi xi katsa ndlela yo fambelanisa mahiselo ya ku bola na hafu ya vutomi bya ti peroxide crosslinking agents (BPO na DCP) na fasitere ra maendlelo yo horisa ya Teflon tape. Data ya nkoka: BPO — 1-min hafu ya vutomi eka ~131°C, 1-hr eka ~92°C, 10-hr eka ~72°C; DCP — 1-min eka ~171°C, 1-hr eka ~135°C, 10-hr eka ~115°C. Logic yo fambelanisa: xinamarheti xi lava 97-99% wa crosslinking = 5-7 wa hafu ya vutomi; nkarhi wo horisa = 5-7 × hafu ya vutomi eka mahiselo lawa ya kongomisiweke. Hlayela endzhaku mahiselo kusuka eka nkarhi wo tshama eka layini ya vuhumelerisi kumbe back-calculate nkarhi kusuka eka mahiselo yale henhla lawa ya pfumeleriwaka.

Xihloko lexi xi katsa rivilo ra layini leri tolovelekeke ra layini ya vuhumelerisi bya PTFE ya mahiselo ya le henhla ya lapi ya impregnation. Rivilo leri tolovelekeke: 2-15 m/min, ndzhawu yo tirha leyi tiyeke 3-8 m/min, malapi yo olova/milayeni ya rivilo lerikulu kuya fika eka 10-15 m/min. Swipimelo kusuka eka ku nghena ka impregnation: lapi rifanele kuva ri tatiwe hiku hetiseka hi PTFE emulsion eka fibre bundle interiors — rivilo rale henhla swinene rivanga impregnation leyinga ringanelangiki, ndlala ya resin xikan’we na ti fibre leti omeke; emulsion viscosity, solids concentration, fabric weave density hinkwaswo swihunguta penetration rate, leswi lavaka rivilo ro nonoka eka malapi yo tiya/yo tsindziyela. Ku hundza ka ku peta: ku hundza ko tala (2-6+) loku lavekaka eka ku peta loku nga riki na swihoxo swo enta; first pass slower for anchoring, ku hundza loku landzelaka kunga engeteriwa hiku ringanela.

Xihloko lexi xi pimanisa ku hambana exikarhi ka ku hisa ka miseve ya infrared na ku hisa ka ku rhendzeleka ka moya wo hisa eka crosslinked structure uniformity ya silicone adhesive layer. Maendlelo yo hundzisela kuhisa: moya wo hisa i convection-conduction, wo olova naswona wuya emahlweni, leswi endlaka leswaku kuva na gradient ya mahiselo yoringanela; IR i radiation-absorption na ku amukeriwa lokukulu ka le henhla (micrometers kuya eka millimeters) leswi endlaka leswaku kuva na steep surface-to-interior gradient. Vuyelo eka ku hangalasiwa ka crosslink density: moya wo hisa wu pfumelela swiphemu swale ndzeni nale handle ku nghena eka vulcanization temperature range kwalomu ka nkarhi wun’we, leswi humesaka uniform crosslink density kuya hi vukulu; IR yi endla leswaku surface layer yi horisa hiku hatlisa yi endla nhlonge yo enta leyi sivelaka ku hundziseriwa ka kuhisa, leswi endlaka leswaku kuva na sharp gradient ya crosslink density leyi hungutaka kusuka ehenhla kuya endzeni.

Xihloko lexi xi katsa nhlayo ya silica na swiyimo swa ku tirhisiwa ka lapi ra fibre ya nghilazi ya silica yale henhla. Nhlamuselo ya nhlayo ya silica: xikombiso xa nkoka i SiO2 ≥96% (standard 96-98%, tigiredi ta premium >99% hiku tirhisa acid leaching na sintering, ku tshinelela pure quartz fiber). Ku endliwa: E-glass fabric yi endla hot acid leaching kuva yi n’okisela swiphemu leswingariki swa silica (boron oxide, sodium oxide), leswi endlaka leswaku kuva na porous high-silica skeleton, kutani yi sinteriwa kuva yi densification. Swipfuno swa nkoka: vukorhokeri lebyi yaka emahlweni eka 900°C eka swibakabaka leswi oxidizing, nkarhi wo koma ehenhla ka 1200°C, ndzhawu yo olova ekusuhi na 1700°C; ku tshamiseka ka tikhemikhali eka ti acid/alkali totala handle ka HF na phosphoric acid yo hisa; dielectric constant yale hansi xikan’we na insulation leyi tiyeke eka mahiselo yale henhla.

Xihloko lexi xi katsa xiendlakalo xa delamination xa lapi ra Teflon ra mahiselo yale henhla. Delamination swivula ku hambanisiwa naku peeling exikarhi ka surface PTFE coating na internal fiberglass base fabric kumbe exikarhi ka ti coating layers totala. Swikombiso leswi voniwaka: ku pfimba/ku rhurhumela (swiphepherhele leswi tlakukeke leswi nga na ku titwa ka hollow) tanihi swikombiso swo sungula; interlayer peeling na coating leyi susiwaka hiku olova eka maphepha lawa ya paluxaka fiberglass yo basa; localized whitening leyi landzeriwaka hiku flaking endzhaku ka kuhisa/friction. Swivangelo leswikulu: Ku onhaka ka ntshikelelo wa mahiselo — ku hambana ka ti thermal expansion coefficients exikarhi ka PTFE na fiberglass swi endla leswaku ku va na ntshikelelo wa le ndzeni, swirhendzevutani swa xihatla swa ku hisa/ku kufumela swi vanga ku hambana; Swihoxo swa khwalithi ya vuhumelerisi — vutshunguri lebyi nga ringanelangiki bya le henhla ka fiberglass, PTFE impregnation yoka yingari kahle, sintering leyinga ringanelangiki leswi vangaka ku tsana ka interfacial bonding.

Xihloko lexi xi hlamusela swihlawulekisi swa microstructural swa lapi ra Teflon ra mahiselo yale henhla. Substrate skeleton: xivumbeko xa glass fibre weaving eka ti plain/twill weaves letingana porosity yale henhla (micron-scale pores endzeni ka ti fibre bundles nale ka warp-weft nodes) leswi nyikaka ndzhawu ya PTFE impregnation. Mofoloji ya ku peta: full impregnation encapsulation yi vumba 'reinforced concrete' xivumbeko laha ti fibre ta nghilazi ti nga xiphemu xo tiyisisa, PTFE i matrix leyi yaka emahlweni; surface nodular microstructure ya ti nodules (ti particles) leti hlanganisiweke hi ti fibrils letintsongo leti vumbiweke hi nkarhi wa sintering; continuous dense skin layer (yo hlaya kuya eka makume ya ti microns hiku enta) ya pure PTFE tani hi xisirhelelo xa nkoka xa ku nga tirhi ka tikhemikhali, swivumbeko leswinga namarheli, na ku pfaleriwa ka gezi.