O lenei faʻamatalaga faʻapitoa mai Jiangsu Aokai auʻiliʻili pe faʻafefea ona faʻaleagaina le vevela maualuga o le vevela o le PTFE ie vevela maualuga. O le sintering maualalo e tu'u ai vaega e le fa'afefeteina, e mafua ai micro-pores, vaivai le fa'apipi'iina o mea fa'apipi'i-fa'apalapala, mata talatala, vaivai le malosi fa'ainisinia, ma foliga opaque susu. O le vevela e fa'aosoina ai le fa'aleagaina o le vevela o le PTFE, fa'atupuina pine, fa'alifu, fa'apalapala, lanu samasama-i-uliuli, ma tu'u ai le asu oona. O fa'alavelave uma e lua e fa'aleagaina ai le fa'apipi'i, le fa'atinoina o mea e le fa'apipi'i, fetuutuuna'i, fa'alumaina, ma le mautu.

PTFE maualuga-vevela ie insulating gaskets tuufaatasia malosi dielectric maualuga (mautu i lalo o le susu), -70 ° C i le 260 ° C tulaga vevela, tetee kemisi lautele (sei vagana ai uamea alkali liusuavai), luga e le o pipii (taofia creepage), anti-tolotolo (fiberglass faamalosia vs. mama PTFE), malosi tensile maualuga-0.0μ0. fua fa'atatau. Pe a faatusatusa i mika, pa'u, ma gaskets PTFE mama, ie PTFE ofoina sili fetuutuunai, faagasologa, ma le mautu itu umi umi. Lelei mo transformers, insulation afi, chemical flange faʻamaufaʻailoga, ma masini semiconductor.

O le tau o le emulsion PTFE e a'afia i mea taua i le vaega atoa o pisinisi. O tau i luga (fluorite mining, R22 refrigerant quotas) fa'atulaga le fola o le tau. Ole mana'oga pito i lalo mai mea fa'apipi'i ma'a lithium o le ta'avale tuputupu a'e muamua. O a'afiaga o sapalai (fua o galuega fa'apisinisi, tausiga o la'au) ma le tulaga lelei o oloa (mea mautu, lapopo'a, vasega mama) e fa'atupuina ai fa'asologa o tau. Tulafono fa'alesiosiomaga (PFOA/PFAS tapula'a) si'itia tau o le tausisia. O lo'o fa'aopoopoina tupe fa'aalu tetele. O fa'asologa o tau o lo'o mulimulita'i i se manatu autu: tau o le fluorite/hydrofluoric acid = fola; mana'oga fou ma'a = aga'iga; tau fa'agaioiga ma faiga fa'avae = fa'atupu fa'alavelave fa'afuase'i.

PTFE lipine mo paipa vailaʻau / vaʻa anti-corrosion, non-stick, ma le faʻamaufaʻailoga puipuiga e manaʻomia le faʻatusaina o meaʻai, faʻapipiʻi faʻapipiʻi, ma faʻasalalauga kemisi. Silicone PSA e fautuaina mo le 200-260 ° C ma acids / alkalis; PSA acrylic e tetee i solu faʻaletino ae faʻatapulaʻa le vevela ile ≤150°C. Mo le HF, faʻapunaina> 80% alkali, poʻo le chlorine trifluoride, faʻaaoga le PTFE-naʻo le ufiufi (leai se mea faʻapipiʻi faʻapipiʻi). Taua: fa'apipi'i o le so'otaga sili ona vaivai, ae le o le PTFE lava ia.

PTFE ie mafolafola i le taimi sintering manaʻomia le saʻo le mautonu, vevela, ma le taofiofia pulea. Metotia autu: masini stenter (papatusi fa'amaumau le lautele, puipuia lalaga fa'aitiitiga), fa'alili le vevela fa'amatalaga (fa'avevela fa'agesegese → 380-400°C taofi → fa'agesegese malu i lalo ole 310°C a'o le'i tu'uina atu le vevesi), mua'i fa'aitiiti substrate (ave'esea lalaga mamafa a'o le'i fa'aofuofu), ma le mafiafia o le fa'aofuofu toniga eseese (puipuia). E tatau ona fa'atumauina le taofiga o Stenter se'ia mālūlū i lalo ole tulaga fa'ama'a tioata PTFE (pe tusa o le 310°C) e puipuia ai le taua.

Ufiufi tutusa i le taimi o le PTFE emulsion impregnation o ie fiberglass o le olaola o le lelei o oloa. O le fa'alavalava fa'afuafua e mafua ai: fa'aletonu le pipii (piimau i mea manifinifi), vaivai fa'ainisinia (fa'ato'a mamafa, saeia), fa'aletonu eletise (fa'ato'a pa'ū le voltage malepe i le 1/10), fa'aosoina vaila'au (pinhole corrosion), fa'afitauli fa'apitoa (warpage), ma fa'aletonu fa'agasologa (fesevase fusipa'u, fesuiaiga mafiafia). O le fa'aofuofu tutusa e mana'omia ai le pulea tonu o le viscosity o le emulsion, mea mautu, tete'e o ie, va'a oomi, ma fa'amamago/sintering fa'amatalaga e tele sone.

PTFE lipine umia mana ua faaleleia e ala i le ufiufi ma fofo optimization faagasologa. Ufiufi: vaega muamua (0.5-2μm silane primer e puipuia ai le pa'u o le pipii), mafiafia pipii 30-60μm (sili ona lelei mo le umiaina o le mana), fa'amama fa'amama, ma le 5-10μm filtration. Fa'amālōlōina: fa'avevela fa'asolosolo (80-100°C solvent removal → 120-140°C shaping → 150-220°C deep crosslinking), post-curing (40-60°C mo le 24-48h e malolo ai le atuatuvale), ma le maualalo o le mamafa o le felauaiga e puipuia ai le atuatuvale i totonu mai le fa'aitiitia o substrate. O le mea muamua e taua mo le maualalo o le malosi o le PTFE.

PTFE ie vevela-maualuga e fa laʻasaga o suiga faʻavae aʻo siʻitia le vevela: lalo ifo o le 260 ° C - faʻagesegese micro-taʻetaʻe ma totoe faʻaopoopoga volatilization; i le 327 ° C (mea faʻafefete) - suiga tioata-i-amorphous, faʻamaluluina le ufiufi, faʻamalo mai le fiberglass; 400-500 ° C - PTFE depolymerizes (fa'asa'oloto kasa oona), fa'alavalava mou; i luga aʻe o le 500°C – e faʻamaluluina le fiberglass (840°C le faʻamaluluina) ma leiloa le faʻatulagaina o le faʻamaoni. Tumau i lalo ole 260 ° C fa'aauau, aloese mai le> 300 ° C pito i luga mo le saogalemu.

PTFE ie vevela maualuga e gaosia e ala i le tasi-dip impregnation (tasi pasi: vave, maualalo-tau, ufiufi manifinifi, luga talatala ma pinholes) po o le tele-dip impregnation (2-3 + pasi: lamolemole, mafiafia, pinhole-saoloto ufiufi, PTFE anotusi 50-70%, faatinoga totogi, tau maualuga). Su'e tasi fa'afu su'ega pa'u maualalo, fala le tumau, ma mea e manava. E mana'omia le tele o lolu mo pepa tao tao mea'ai, fusi fe'avea'i e le pipi'i, so'oga ta'avale ta'avale maualuga, laina vaila'au, ma pa'u faufale.

PTFE maualuga-vevela ie togafitiga luga motusia inertness kemikolo mo fusia / lolomi. Fa metotia: etching kemikolo (sodium-naphthalene, malosi i luga 20→40-50 dyn/cm, tulaga pogisa tumau, fausaga micro-porous), togafitiga plasma (nano-roughening, grafting vaega galue, pupuu toaga faamalama), togafitiga korona (mea manifinifi, vave pala, faatapulaaina loloto), ma leisa togafitiga (saʻo micro-patterning, pulea carbonization). O metotia uma fa'aletino fa'aletino ma fa'apipi'i fa'ama'i vaega polar (C=O, -OH, -COOH) ina ia mafai ai ona pipii fa'apipi'i.