PTFE avɔ si me dzoxɔxɔ le ŋutɔ (PTFE-coated fiberglass) nyo abe nusiwo wotsɔ wɔe ene ko. Nu eve le vevie: PTFE resin/emulsion (nu si wotsɔ blae) kple fiberglass substrate (si wotsɔ do ŋusẽe). Ðiƒoƒo siwo le wo dometɔ ɖesiaɖe me – ga ions, polymers siwo ƒe molecule ƒe kpekpeme mede o, residual sizezing agents, alo alkali oxides – ateŋu ahe kpododonu kaba: ɣie, gbagbã, non-stick ƒe bu, delamination, alo insulation ƒe gbagbã.
Aokai PTFE zãa nu xoxo siwo le dzadzɛ ŋutɔ kple dɔwɔwɔ dzi kpɔkpɔ sesĩe. Mɔfiame sia ɖe alesi dzadzɛnyenye kpɔa ŋusẽ ɖe dɔwɔwɔ ƒe akpa ɖesiaɖe dzi kple nusita wòle vevie na dɔwɔwɔ siwo bia nu geɖe la me.
PTFE Raw Material Purity – Ðiƒoƒo Kawoe Li?
Ðiƒoƒo siwo bɔ ɖe PTFE me dometɔ aɖewoe nye:
Monomer siwo mewɔ dɔ o kple polymer siwo ƒe molecule ƒe kpekpeme mede o
Kpekpeɖeŋunu siwo wotsɔ wɔa dɔe kple nusiwo dona tso eme
Dzadzɛnyenye si de ŋgɔ wu wɔnɛ be nusi wotsɔ wɔe la te ŋu naa dɔwɔwɔ te ɖe nɔnɔme nyuitɔwo ŋu.
1. Dzoxɔxɔ ƒe tsitretsitsi kple dzoxɔxɔ ƒe liƒo
Ga ions (gayibɔ, akɔbli, sodium) wɔa dɔ abe nusiwo naa PTFE ƒe dzoxɔxɔ gblẽna sesĩe ene . Le dɔwɔwɔ ɣeyiɣi didi si wu 260°C me la, ga ƒe ɖiƒoƒo suesuesuewo gɔ̃ hã nana molecule ƒe kɔsɔkɔsɔ ƒe gbagbã kabakaba, si wɔnɛ be wògbãna kaba eye wògbãna. PTFE si le dzadzɛ ŋutɔ la ɖea dzoxɔxɔ ƒe gbegblẽ ƒe dzoxɔxɔ si lolo wu fiana, egakpɔtɔ nyea ɣi dzadzɛ, eye wòtsia tre ɖe ɣie ŋu nyuie.
2. Non-stick dɔwɔwɔ kple anyigba ƒe nyonyome
Polymer siwo ƒe molecule ƒe kpekpeme mede o kple ami ƒe akpa aɖewo ʋuna yia nusi wotsɔ blae la ƒe anyime le dzoxɔxɔ gã me sintering me, eye wowɔa tsidzadza.
Nusiwo meléna ɖe nu ŋu o si gblẽ: Eƒe anyigba va nɔa ƒoƒom eye wòlɔ̃na be yeléna ɖe nusiwo ŋu wotrɔ asi le (nuɖuɖu, nulénu siwo wotsɔ léa nu ɖe nu ŋu) ŋu.
Ðiƒoƒo ƒe afɔku: Le nuɖuɖu ƒe nyonyome kple atikewɔwɔ me la, tsidzadza siwo ʋuna ate ŋu aƒo ɖi nusiwo wowɔ eye woado kpo dzadzɛnyenye ƒe dzidzenuwo. Dzadzɛnyenye nye dzesi vevi aɖe na PTFE avɔ siwo woate ŋu aka ɖe nuɖuɖu dzi.
3. Elektrikŋusẽ ƒe xɔxlɔ̃ ƒe dɔwɔwɔ
Makɔmakɔ ƒe ions (ga cations, halogen ions) wɔa dɔ abe charge carriers ene, si ɖea volume resistivity kple breakdown voltage dzi kpɔtɔna ŋutɔ. Le nusiwo wotsɔ xea mɔ na dzoxɔxɔ geɖe (le kpɔɖeŋu me, elektrik-nulénu ƒe gaskets) gome la, nu xoxowo ƒe dzadzɛnyenye le vevie ŋutɔ. Ʋuʋudedi siwo ɖiƒoƒowo hena vɛ hã ate ŋu ana tsi ƒe akpa aɖe nado.
4. Atikewo ƒe tsitretsitsi kple compactness
Ðiƒoƒo siwo me wodea tsii la dona ne wotsɔ wo de atikewo me, si wɔnɛ be ʋuʋudedi suesuesuewo nɔa nusi wotsɔ blae la me. Gblẽƒe siawo nana ya kple tsi si gblẽa nu la gena ɖe fiberglass-nutunua me hegblẽa nu le eŋu, si gblẽa avɔa ƒe mɔxenu ƒe dɔwɔwɔ me.
Le dzoxɔxɔ gã me la, menye ɖeko alkali metal ions siwo tso glass si mekɔ o me gbɔdzɔa avɔa ŋutɔ ko o, ke enaa PTFE ƒe nutsyɔnu la hã gblẽna , si wɔnɛ be kpododonu bliboa kabakaba. Tsɔ kpe ɖe eŋu la, glass si me alkali le titina/si sɔ gbɔ la xɔa tsi, si wɔnɛ be tsi si le tsia me ƒe tsitretsitsi dzi ɖena kpɔtɔna ŋutɔ.
2. Sizing agents – ɖiƒoƒo bubuawo
Wozãa nusiwo wotsɔ dzidzea kawo (starch, PVA, ami) le fiberglass lãgbalẽtata me be woatsɔ akpɔ kaawo ta. Ne womeɖee ɖa keŋkeŋ hafi wotsɔ PTFE tsyɔ edzi o la, nugbagbevi susɔeawo wɔa carbon, wogblẽna, eye wozua gas le sintering me le 400°C kloe me.
Nusiwo gblẽ le anyigba ŋu: Amadede ɣi ƒe tɔtrɔ, teƒe yibɔ, ʋuʋudedi – atikeawo do kpo dzedzeme me toto.
Nusiwo do ƒome kple wo nɔewo ƒe kadodo si gbɔdzɔ: Carbon ƒe nugbagbevi siwo susɔ xea mɔ na atikewo kple dzɔdzɔmeŋusẽ ƒe seke si le PTFE kple fiberglass dome, si wɔnɛ be delamination, blistering, kple peeling le subɔsubɔdɔa wɔwɔ me.
3. Flexural ɖeɖiteameŋu tsitretsitsi
Ya ƒe kuɖɔ suesuesuewo kple kristalo ƒe ɖiƒoƒo siwo le fiberglass kawo me ɖea ka ɖekaɖekawo ƒe tenɔnɔŋusẽ dzi kpɔtɔna. Ne wobɔbɔ wo enuenu la, nɔnɔme madeamedzi siawo va zua nuteɖeamedzi ƒe teƒewo, si wɔnɛ be ka la gbãna kaba eye wòɖea alesi woate ŋu atrɔ ɖe nɔnɔmewo ŋui kple alesi woate ŋu abɔbɔe dzi kpɔtɔna ŋutɔ.
PTFE si me dzadzɛnyenye le ŋutɔe ɖoa: subɔsubɔ ƒe dzoxɔxɔ si sɔ gbɔ wu (260°C+), ɣeyiɣi didi ƒe liƒo si me meléna ɖe nu ŋu o, elektrikŋusẽ si ŋu kakaɖedzi le, kple nuɖuɖu-kadodo ƒe sedziwɔwɔ.
Fiberglass si me alkali mele o si le dzadzɛ ŋutɔ (E-glass, Na2O <0.8%) kpe ɖe kakaɖedziwo ɖeɖeɖa nyuie ƒe lolome ŋu: substrate ƒe ŋusẽ le dzoxɔxɔ gã me, didime ƒe liƒo, kple coating adhesion si li ke delamination manɔmee.
Dzadzɛnyenye si sɔ le kadodo ɖesiaɖe me ana wòado kpo nu kaba – ɣie, delamination, insulation ƒe gbagbã, kple non-stick ƒe bu – vevietɔ le nɔnɔme sesẽwo me: dzoxɔxɔ si nu sẽ ɣeyiɣi didi, elektrikŋusẽ si nu sẽ, alo dzadzɛnyenye ƒe nudidi sesẽwo.
Aokai PTFE dzɔtsoƒe PTFE emulsion si le dzadzɛ ŋutɔ (ga ion si mebɔ o, oligomer si mebɔ o) kple E-glass fiberglass avɔ (si me alkali mele o, si ŋu dzoxɔxɔ kɔ bliboe) koe. Míenaa nuzazãwo ƒe ɖaseɖigbalẽwo eye míate ŋu ado alɔ nuɖuɖu-grade kple high-insulation dɔwɔwɔwo. Te ɖe mía ŋu hena nyatakaka tsitotsito.
Míeléa xexemenunya si nye dɔwɔwɔ nyuie kple fɔmaɖimaɖi me ɖe asi ɣesiaɣi, eye míeɖoe kplikpaa be míana egbɔkpɔnu siwo woawɔ le teƒe ɖeka kple dɔ siwo ŋu wobu nyuie la wò.
