Aw diPTFEKɔtin pan TeflɔnAy-TɛmpraturaKlɔt DeAdhe toFayba GlasFabrik?
PTFE(polytetrafluoroethylene)gεt ekstrim lכw sכfayz εnεji we dεn famכs kכnכs as'nכn-stik'matεrial.So, i nכ kin bi dayrekt kεmikכl bכnd to fayba glas fabrik lεk כdinari kכtin.Asanalyzed by Teflonhigh-temperaturecl othmanufacturer–JiangsuAokaiNewMaterialTechnologyCo.,Ltd., di bonding bitwin di tu na tipikli achiv tru fizikal ankɔring ɛn mɛkanikal intalɔk, supliment bay kemikal praymatritmɛntɔrot-mɛltadheshon kɔmpɔzit ɛfɛkt.
Di spεsifi k mεtכd dεm fכ bכnd Tεflכn ay tεmprachכ klom mεnli inklud dεn wan dεm ya:
1.MɛkanikalIntalɔk(FizikalBɔndin) . Dis na di mכst fכndamεntכl aprכch.Fayba glas fכbrisit insεf na poros tεkstil.WePTFEemulshכn כ dispershכn de impregnate dכr kכt pan di fayv glas fabrik, di PTFE de go insay di gaps εn intasekshכn pכynt bitwin di fayv dεm.Afta dεn drεy εn di tεmprachכ dεm intain(aprכksimatli 360–400°C), di PTFEpartikl dεm de mεlt to wan kכntinyu fכm, fכm fכ grip di fayv bכndεl lεk kכntlεs'ankכrכk.'Bכt, fכ rili pan dis mכtכd stil de rεsultin limited bonding strכng, εn jεnarali nid fכ supliment mεzכr.
2.SilaneCouplingEjentPritritmɛnt(KɛmikɛlBrij) .
Dis na lɛk di kɔr prɔses fɔ di ay-kwalitiPTFEfayba glasfabrik.Di sɔfays fɔ di fayv glas fabrik dɛn fɔs trit wit di silan kɔplɛnjɛnt(lɛk saminosaylan, ɛpoksisaylan, ɛn ɔda wan dɛn):
Wan εnd כf disilεn(saylכksigrכp), afta haydrolaysis, kin kεmikכl bכnd wit di haydroksil grup dεm(-OH) pan di sכfays כf di glas fayb dεm;
di כda rεnd, we de bia כrganik fכnshכnal grup, kin kכros-linkכ strכng adsכrb wit di adhesive kכmכpכnt insay di fluorinated praymer durin sכbsεkvεnt imprεgnεshכn כ kכt.
3.KεmikכlPraymaTransishכnLεya
DairektlycoatingPTFEresultsinpoor adhesionaftersintaring, soadedicated praymersousally aplaied fɔs to di fayba glasfabrik.Dis prayma layersjɛnɛral wan gɛt:
Adhesiveresins: lεk poliyamide-imide(PAI),polyphenylenesulfide(PPS),polyethersulfone(PES), כ poliyetheretherketone(PEEK), we gεt gud wetin εn strכng adhesion to glass fibers, εn kin tinap wit di sכbsεkvεnt dithigh-temperaturePTFEsinteringprocess.
PTFEmicropowder: Fɔ mek shɔ se di praymari ɛn di faynalPTFEto pleya kin fiuz togɛda.
Dis prayma layεr de ajɔst kεmikכl bכndin εn fizikal intalכk wit di kכplεshכn-ejεnt-trit fכybglasfabrik, we de fכm wan bכst transishכn layεr.Di PTFEto pleya dεn de fכm wit di PTFE kכmכpכnt insay di prayma we i de inta, dat de indayrεktly achy hεghadhesion strεngth.
4.Hot-MɛltAdhesiveFilmLamination(LamineshɔnMɛtɔd) Dis we, we JiangsuAokaiNewMaterialTechnologyCo.,Ltd., yuz, de yuz fɔ bondpri-fɔm, tikPTFEfilm to fayba glasfabrik.BikɔsPTFE gɛt ɛkstrim ay mɛltviskɔsiti(aprɔksim ately10⊃1;0–10⊃1;⊃2;Pa·s),ithardlyflowsven wen heatedaboveitsmeltingpoint,sodayrekthot-presbondingisnotpossible.Amelt-prosesabl'hot-meltadhesive'mustbeused,tipikli: FEP(fluorinatedethylenepropylene)ɔPFA(pɛrfluoroalkɔksi)film dɛn ,we gεt lכw mεltin pכynt pasPTFE(aprכksimatli 260–310°C).Afta mεlt, dεn kin wet di fayv glas fabrik dεn de inta-difyuz/mεlt wit di PTFEfil msurface.In di prɔses, di FEP/PFAfilmisplacedbitwin diPTFEfil ɛn di fayba glasfabrik, we dɛn ɔt ɛn prɛs, ɛn afta dɛn dɔn kol, we dɛn dɔn disfɔm strɔng.
bכku hכy-tεmprachכ kכnvεyכr bεlt dεm dεn de prodyuz wit mכltipכl-impregnashכn prכsεs: Di fכs stεmprachכn de yuz dilutePTFEdispershכn we gεt binders εn kכplεnjεnt dεm, we de alaw di prayma fכ go insay dip insay di fayba bכndεl dεm. Afta dɛn dɔn sinta, dɛn kin du bɔku bɔku sɔbsɛkɛns impregnashɔn wit klin PTFEemulshɔn ɛn sɔksɛsiv intarin stɛp dɛn, we kin rilizɔt fɔ mek PTFE klin mɔ ɛn mɔ na di sɔfays. Dis de mek wan kompozishunal grεdiεnttransishכn layεr frכm di fayba glas fabrik we di kכlPTFE, wit lכw intanal strεs εn strכng bכndinfכs.
Dɔn
Insummary, di bonding bitwin di PTFEcoating ɛn di fiberglassfabricinTeflonhay-temperature clothisnotsimply'gluing'–itisacomplex(systematicenjineeringprocess): tru fizikal ankɔring fɔ tek rutin di fayba, tru cou plingejεnt εn prayma fכ ajɔst kεmikכl bכndin εn transishכn, εn tru ay-tεmprachכ intarin fכ kכmplit di mεlt-integrεshכn כf di film layεr dεm.Ifכnly purePTFEwe dεn kכt dεn dayrekt, di εnti rεla go pεlכf wit wan lεti.
