Ndi kusintha kotani komwe kumachitika mu nsalu ya PTFE yotentha kwambiri pakakalamba?

PTFE high-temperaturemabricisacompositematerialopangidwa ndikukhala ndi mimba kapena zokutira magalasi fiberbasefabriric withpolytetrafluoroethylene(PTFE).

Kuwonekera motalika kwambiri mpaka kutentha kwakukulu, kutentha kwa thermo-oxidative, kuwala kwa ultraviolet, ndi makina osindikizira, kapangidwe kake pansi pakuyenda kosasinthika kusinthakuchokera ku molecular tothemacroscopiclevel.

I.MicrostructuralChangesinthePTFECoating

Kuwonongeka kwa unyolo wa mamolekyulu ndi oxidation: The carbon-fluorinemaunyolo pansi pa chain scission, depolymerization, andoxidation, zimabweretsa kuchepa kuchepa kwa molecularweight ndi mapangidwe amagulu a polarsuchascarbonylandcarboxylmagulu omwe amatsatira.

Kusinthakukristali: Zigawo zaunyolo zazifupi pansi paziwiriziwiri kristalo.Poyambirira, maonekedwe akristalo amakula mwachilendo, zomwe zimapangitsa kuti zokutira zikhale zovuta komanso zocheperapo.

Kuwonongeka kwa microscopicmorphology: Kuwonongeka ndi kuchepa kwamakasitima kumapanga ming'alu yaing'ono ndi mapini ochuluka, kupanga njira zowotcha.Zizilombo zingapo, zokutira pamwamba pa ufa ndi PTFEparticles detach.

II.Structural ChangesintheGlassFiberSubstrateand Interface

Kulephera kuonjezeretsa kutentha/kuphatikizana: Silanecouplingagentsororganicsizingagentsonthe glass fiber surface decompose and carbonizethreturesighty first,kupangitsa kutayika kwachemicalmabondindimamechanical interlocking force between PTFEnditheglass fiber.

Interface debondindamination: Pambuyo pa kulephera kwa mawonekedwe, kusiyana kwa kuchuluka kwamafuta komwe kumagwira ntchito pakati pa PTFE ndi magalasi amafuta otenthetsera, kutsogola ndi kupatukana kwa zokutira kuchokera kunsalu, kumatuluka, kusungunuka, ndikusintha malo oyera.

Kuwonongeka kwa galasi lokha: Kutentha kwapamwamba kwasandangazakalinizimene zimawononga magalasi, kuchititsa micro-cracksonthe fiber pamwamba ndi kuphulika.

III. KusinthaMapangidwe Aakuluakulu ndi Maonekedwe

Kusintha kwamitundu: Zinthu zimasintha pang’onopang’ono kuchokera ku zoyera za chilengedwe, tobeige, zofiirira, zakuda kapena zakuda, zimachokera ku carbonization of the interfacial layering, zomatira za organic contaminants, ndi zina zotsalira kuchokera ku pang’ono pang’ono PTFE kuwonongeka.

Kukhazikika kwapakatikati ndi kuphwalala: Kuchepa kwapangidwe kumachitika, nsalu pamwamba pake imakhala yofanana, ndi m'mphepete mwamakutu.

Kukula: Kuwoneka mofewa kumawoneka, ndipo pamwamba pake kumakhala movutikira komanso kumataya gloss yake.

Kugubuduka kwamakina: Zakuthupi zimataya kwathunthu kusinthasintha ndi kusweka popindika. Zokutira zimasiyana kwambiri ndi nsalu zoyambira, zomwe zimapangitsa kuti zikhale zovuta kugwira ntchito.

IV.Kufunika kwaMchitidwe Wokalamba

Zosinthazi zili pamwambazi zimakhala njira yopitilila patsogolo'kuwonongeka kwamawonekedwe→kulephera kwapakati→kuwonongeka kwagawo.'PTFElosesiinertnessanddevelop scracks;interface yagalasiyo imawonongeka pamaso pa ulusi womwewo,kupangitsa kuti iwonongeke; kugwirizana, chilengedwe chonsecho chimakhala chosasunthika, ufa, ndi kupasuka.Kulamulira kutentha kwa ntchito, kupewa kugwedezeka kwa kutentha kuchokera ku kutentha ndi kuzizira, ndi kupewa kukhudzana ndi mchenga wa asidi wansangukuchepetsa bwino ndondomekoyi.

Zomwe zili pamwambazi zimaperekedwa ndiJiangsuOKNewMaterialTechnologyCo.,Ltd.

Ngati mungafune kudziwa zambiri zatsatanetsatane, machitidwe ogwiritsira ntchito, ndikusintha mwamakonda zosankha zathuzamtundu wazinthu zonse-kuphatikiza PTFEhigh-temperature fabric,PTFEhigh-temperaturetepe,Teflonhigh -malamba amiyendo,opanda msoko pazitsulo zomatira,zovala zambali imodziPTFE,malamba onyamula kutentha kwambiri,ndi nsalu zamagalasi zotentha kwambiri—chonde khalani omasuka kulumikizana ndi njira zotsatirazi:

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