Aw diPTFEKɔtin pan TeflɔnAy-TɛmpraturaKlɔt DeAdhe toFayba GlasFabrik?
PTFE(polytetrafluoroethylene)hasan ekstrim lכw sכfayz enεji 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 prayma tritmɛntmɛntɔrot-mɛltadheshon kɔmpɔzit ɛfɛkt.
Di spεsifi k mεtכd dεm fכ bכnd Tεflכn hεy-tεmprachכ klot mεnli inklud dεn 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 gap εn intasekshכn pכynt bitwin di fayv dεm.Afta 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 dɛn.Di sɔfays fɔ di fayv glas fabrik dɛn fɔs trit wit di saylɛn kɔplɛnjɛnt(we tan lɛk saminosilane, ɛpoxysilane, ɛn ɔda wan dɛn):
Wan εnd כf disilεn(saylכksigrכp), afta haydrolaysis, kin kεmikכl bכnd wit di haydroksilgrכp dεm(-OH) pan di sכfays כf di glas fayb dεm;
di כda rεnd, we de bia כrganik fכnshכnal grup, kin kכros-linkכ strכngli adsכrb wit di adhesive kכmכpכnt insay di fluorinated praymer durin sכbsεkvεnt impregnashכn כ kכt.
3.KεmikכlPraymaTransishכnLεya
DairektlycoatingPTFEresultsinpoor adhesionaftersin intaring, soadedicated praymari usually applyed first to the fiberglassfabric.Dis prayma layersjenarali gɛt:
Adhesiveresins: lεk poliyamide-imide(PAI),polyphenylenesulfide(PPS),polyethersulfone(PES), כ poliyetheretherketone(PEEK), we gεt gud wetin εn strכng adhesion to glassfibers, 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 fizik intalכk wit di kכplεshכn-ejεnt-trit fכybglasfabrik, we de fכm wan bכst transishכn layεr.Di PTFEto pleya dεn de fכm wit di PTFE kכmכpכnt in di prayma we i de inta, dεn de indayrεkt fכ achy hεghadεshכn strεngth.
4.Hot-MɛltAdhesiveFilmLamination(LamineshɔnMɛtɔd) Dis we, we JiangsuAokaiNewMaterialTechnologyCo.,Ltd., 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.Insay 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.
Bɔku ay-tɛmpracha kɔnvaysɔri bɛlt ɛn akitekchral mɛmbran matirial dɛn de prodyuz yuz wan mɔltipɛl-impregnashɔn prɔses: Di fɔs prɛgnɛshɔn de yuz dilutePTFEdispershɔn we gɛt binders ɛn kɔplɛnjɛnt, we de alaw di prayma fɔ go insay dip insay di fayba bɔndɛl dɛn. 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 pasmak na di sɔfays. Dis de mek wan kompozishunal gradienttransishכn 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-temperatureclothisnotsimply'gluing'–itisacomplex(systematicengineeringprocess):thru fizikal ankɔring fɔ tek rutin di fayba dɛn, 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 dairekt, di εnti rεla go pεlכf wit wan lεti.
