PTFEavɔ siwo ƒe dzoxɔxɔ lolo nye nusiwo wotsɔ ƒo ƒu wɔ avɔ si wotsɔ dea tsi alo tsɔa glassfiberbasefabric kple polytetrafluoroethylene(PTFE) tsyɔ edzi.
Ne mede dzoxɔxɔ si nu sẽ o, dzoxɔxɔ-oxidative nɔnɔmewo, ultravioletradiation, kple mɔ̃ɖaŋunuwo ƒe nuteɖeamedzi me ɣeyiɣi didi o, eƒe wɔwɔme toa tɔtrɔ siwo woate ŋu atrɔ tso molecule gbɔ va ɖoa macroscopiclevel.
I.Tɔtrɔ suesuesuewo le PTFECoating me
Molekyulkɔsɔkɔsɔ ƒe gbegblẽ kple oxidation: Carbon-fluorine ƒe kɔsɔkɔsɔ vevitɔ toa kɔsɔkɔsɔ ɖeɖe, depolymerization, kple oxidation me, si wɔnɛ be molecule ƒe kpekpeme dzi ɖena kpɔtɔna eye wònana polargroup siwo nye scarbonylandcarboxylgroups ƒe wɔwɔme le kɔsɔkɔsɔ ƒe nuwuwu.Esia dzina ɖe edzi le yame ƒe ŋusẽ ŋu eye wòɖea non-stick nɔnɔmewo kple tsivɔvɔ̃ dzi kpɔtɔna.
Tɔtrɔ le kristalo ƒe nɔnɔme me: Kɔsɔkɔsɔ kpuiwo ƒe akpa siwo le kristalo evelia te.Le gɔmedzedzea me la, kristalo dzina ɖe edzi le mɔ si mesɔ o nu, si wɔnɛ be nusi wotsɔ blae la sesẽna eye wògbãna wu.Ne eƒe gbegblẽ nu sẽna la, kristalo-nutowo tsrɔ̃na eye xɔtuɖoɖoa mu.
Nu suesuesuewo ƒe nɔnɔme ƒe gbegblẽ: Nuteɖeamedzi kple nutete nana be nu suesuesuewo ƒe gbagbã kple pindo gbogbo aɖewo, siwo wɔa xɔxlɔ̃ ƒe mɔ̃wo.Le nɔnɔme sesẽwo me la, nusiwo wotsɔ blaa anyigba ƒe aŋɔ kple PTFE ƒe nusuewo ɖea wo ɖokui ɖa.
II.Dɔwɔƒe ƒe Tɔtrɔ le GlassFiber Substrate kpleInterface me
Failureoffiber size/couplingagents: Silanecouplingagentsororganicszingingengent ontheglass fibersurface gblẽna eye wowɔa carbon le dzoxɔxɔ sesẽwo me gbã, si wɔnɛ be atikewo ƒe kadodo kple mɔ̃wo ƒe kadodoŋusẽ siwo le PTFE kple glassfiber dome la bu.
Interfacialdebondingandddelamination: Le interface ƒe kpododonu megbe la, vovototo si le dzoxɔxɔ ƒe kekeɖenudɔwɔwɔ ƒe xexlẽdzesiwo dome le PTFE kple glassfiber dome hea dzoxɔxɔ ƒe nuteɖeamedzi vɛ, si kplɔa ame yia edzi eye wòɖea nutsyɔnu la ɖa tso avɔa gbɔ, si wɔnɛ be ʋuʋudedi, delamination, kple teƒe ɣi siwo woɖe ɖe go.
Glass-ka la ŋutɔ ƒe gbegblẽ: Dzoxɔxɔ si lolo kple nu siwo le abe ka ene la gblẽa glass-network la me, si wɔnɛ be kaawo ƒe anyigba megbãna vie eye wògbãna.Le ɣeyiɣi ma ke me la, alkalimetaloxides siwo le glass fiber la me tsia dzoxɔxɔ sesẽwo me, hea nuteɖeamedzi si gblẽa nu le dometsotsoa ŋu le mɔ si to vovo nu eye wònana ŋusẽ si bu la dzina ɖe edzi kabakaba.
III.Tɔtrɔ leMacroscopicStructure kple Dzedzeme me
Amadede ƒe tɔtrɔ: Nuawo trɔna vivivi tso yevuwo gbɔ tso dzɔdzɔme amadede si nye beige, brown, alo yibɔ gɔ̃ hã gbɔ, si dona tso carbonization of the interfacial layer, adhesion of the organic contaminants, andresidual products from small orPTFEdegradation.
Dimensionalsabilityand flatness: Shrinkagedeformation dzɔna, avɔawo ƒe goglome va zua nusi mesɔ o, eye wòtsia ʋuʋudedi.Esiae nye molecule ƒe kɔsɔkɔsɔ ƒe mɔmaɖemaɖeɖenuŋu kple dometsotso ƒe nuteɖeamedzi ƒe dodo.
Anyigba ƒe ƒuƒuiƒe: Seselelãme si le gbadzaa la nu yina, eye anyigba la va zua esi me keklẽ le eye wòbuna.
Mɔ̃ɖaŋununya ƒe gbagbã: Nuawo megate ŋu trɔna ɖe nɔnɔmewo ŋu o eye wògbãna ne woblae.
IV.Amegãkuku ƒe Dɔwɔna ƒe Vevienyenye
Tɔtrɔ siwo le etame la nye 'coatingdegradation→interfacialfailure→substratedegradation ƒe ɖoɖo si yia ŋgɔ.'PTFElosesitsinertnessandddevescracks;glassfiber interface la gblẽna hafi fiberbody ŋutɔ, si kplɔa ame yia delamination;ulti mately,theentirestructurebecomes brittle, powders,and disintegrates.Dziɖuɖu ƒe dzoxɔxɔ dzi ɖuɖu, aƒo asa na dzoxɔxɔ ƒe ʋuʋu tso tsidzadza kabakaba kple fafa me, eye wòaxe mɔ ɖe kadodo kple aɖi kple aɖi si ate ŋu ana xɔtuɖaŋu ƒe tsitsi ƒe ɖoɖo sia naɖe blewu nyuie.
Ne èdi be yeasrɔ̃ nu geɖe tso nusiwo wogblɔ tsitotsito, dɔwɔɖoɖowo, kple tiatia siwo woawɔ ɖe míaƒe adzɔnuwo ƒe hatsotso bliboa ŋu—siwo dometɔ aɖewoe nye PTFE avɔ si ƒe dzoxɔxɔ lolo, PTFE ƒe dzoxɔxɔ gã ƒe kasɛt, Teflon kɔkɔ -temperaturemeshbelts,seamlessbelting foradhesivepresses,single-sidedPTFEfabric,coverature conveyorbelts,kple fiberglassfabric si ƒe dzoxɔxɔ deŋgɔ—taflatse se le ɖokuiwò me be yeate ŋu aƒo ka na ye to mɔ̃ siwo gbɔna dzi:
