PTFE high-temperature npuag (PTFE-coated fiberglass) tsis zoo flex kuj vim hais tias cov fiberglass substrate yog inherently brittle. Cov ntaub nyias nyias (0.08mm) muaj sia nyob ntau pua mus rau txhiab folds; hnyav qib (> 0.25mm) tawg tom qab kaum ob. Satin weave outperforms dawb weave. Rau kev sib txuas txuas ntxiv txuas ntxiv, xav txog cov khoom PTFE zaj duab xis lossis aramid-raws li ntaub hloov.

PTFE high-temperature npuag (PTFE-coated fiberglass) yog dav siv nyob rau hauv textile printing thiab dyeing rau tshav kub hloov luam ntawv siv (180-230 ° C), tshuaj ntsuam luam ntawv lub rooj npog, ziab mesh siv, fusing tshuab siv, thiab cov menyuam wrapping. Nws tsis yog-stick nto tiv thaiv tus number case / nplaum residue, txo kev tu ncua sij hawm thiab txhim kho cov ntaub zoo. Seamless txoj siv sia uas tsis muaj qhov kawg ua rau kev tsim khoom tas mus li.

PTFE high-temperature npuag (PTFE-coated fiberglass) yog cov khoom siv lim dej zoo tshaj plaws rau cov xwm txheej huab cua: tshem tawm cov pa roj plua plav (cement, khib nyiab incineration, thee boilers mus txog 260 ° C), corrosive kua pom (acids, alkalis, roj), zaub mov / tshuaj sterile filtration, thiab lim. Non-stick nto tiv thaiv plua plav caking thiab tso cai rau kev ntxuav yooj yim. Membrane-laminated qib ua tiav cov pa hluav taws xob tsawg.

PTFE high-temperature ntaub tuav zoo heev hluav taws xob rwb thaiv tsev los ntawm -180 ° C mus rau 260 ° C: ntim resistivity > 10¹³ Ω·cm ntawm 200 ° C, dielectric qhov ruaj khov ntawm 2.0-2.1. Tshaj 260 ° C, PTFE softens, decomposes saum 327 ° C, poob rwb thaiv tsev mus tas li. Hauv qab 0 ° C, rwb thaiv tsev zoo dua, tab sis txheej yuav nkig. Nyob rau hhiab fiberglass thaub qab muab cov kab xev no nws cov khoom tshwj xeeb thermal. Nws tuav nws cov qauv kev ncaj ncees thiab cov yam ntxwv uas tsis yog-stick txawm nyob rau hauv huab cua kub, ua rau nws invaluable nyob rau hauv ntau yam kev siv. Los ntawm kev ua zaub mov mus rau aerospace, PTFE fiberglass daim kab xev lub tshav kub kuj ua kom ntseeg tau tias kev ua tau zoo hauv kev xav tau ib puag ncig uas cov kab xev zoo tib yam yuav ua tsis tiav.

PTFE high-temperature npuag (PTFE-coated fiberglass) yog zoo tagnrho rau cov khoom noj khoom haus conveyor siv vim nws 260 ° C tshav kub tsis kam, -70 ° C txias yooj, tsis-stick nto, thiab FDA ua raws. Daim ntawv thov tseem ceeb: bakery ncu (biscuits, qhob cij, pizza), kib zaub mov conveyors, khoom qab zib txias kab, freezing tunnels, tshav kub sealers, thiab cov menyuam qhwv. Txo cov khib nyiab thiab ntxuav lub sijhawm.

Nto xov cov neeg ua hauj lwm siv rau fiberglass ntaub ua ntej PTFE txheej yog ib qho tseem ceeb rau qhov kawg PTFE high-temperature daim ntaub. Organosilane coupling cov neeg ua haujlwm tsim cov txuas txuas ntawm cov iav fiber ntau thiab cov organic PTFE, txhawb nqa lub zog tev ntawm <2 N / cm rau 4-8 + N / cm. Kev kho kom zoo kuj tseem txhim kho cov cua sov (260 ° C +), dielectric kev ua tau zoo, thiab tshuaj tiv thaiv. Cov ntaub tsis kho ua rau delamination, bubbling, thiab lub neej ua haujlwm luv.

Warp thiab weft ceev ntawm fiberglass ntaub txiav txim siab PTFE high-temperature ntaub ua haujlwm. Higher density increases tensile strength and surface smoothness but reduces tear strength (inverted U-curve), flexibility, and coating penetration. Optimal density balances penetration, tear resistance, elasticity, and deg finish. Tsawg ceev haum dynamic dabtsi yog khoov; high density rau non-stick thiab rwb thaiv tsev.

Calendering - nias PTFE-coated ntaub ntawm rhuab daim iav rollers ntawm 360-380 ° C - ua rau muaj kev hloov pauv ntawm qhov chaw morphology, tso tawm cov khoom, impermeability, thiab kev ua haujlwm txhua yam. Nws txo qhov roughness ntawm Ra 0.5-1.0 μm mus rau <0.05 μm, ntsaws ruaj ruaj pinholes, txhim kho hnav tsis kam, tab sis txo cov kua muag zog thiab yooj. Qhov tseem ceeb rau kev tso tawm liners thiab hluav taws xob rwb thaiv tsev.

Fiberglass weave qauv - dawb, twill, los yog satin - cuam tshuam rau PTFE siab-kub ntaub ntaub. Satin weave muaj lub zog tsim kua muag siab tshaj plaws (2-3x tiaj) thiab yooj, zoo tagnrho rau dynamic dabtsi yog khoov. Plain weave muab qhov zoo tshaj plaws kev ruaj ntseg thiab tev adhesion, haum rau kev siv zoo li qub. Twill sib npaug tag nrho cov khoom siv rau kev siv dav dav.

Txheej txheej uniformity ntawm PTFE high-temperature npuag yog txiav txim los ntawm plaub yam: txheej formulation (particle loj 0.15-0.35 μm, viscosity, khoom cov ntsiab lus), txheej & sintering txheej txheem (hniav txheej nyiam rau uniformity), substrate zoo (weave qauv, pre-kho), thiab ntau lawm ib puag ncig (<20-25% R,). Dip + hniav ua ke txheej txheem sib npaug nkag mus thiab nto smoothness.