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.

PTFE high-temperature npuag thiab silicone npuag ob leeg siv fiberglass ntaub los ua lub hauv paus tab sis txawv ntawm cov khoom siv txheej (PTFE resin vs silicone roj hmab). PTFE ua tau zoo nyob rau hauv tsis-stick, hnav tsis kam, thiab tshuaj tiv thaiv mus txog 260 ° C. Silicone npuag muaj qhov ua tau zoo dua qub, rwb thaiv tsev hluav taws xob, thiab hluav taws kub (txog 230 ° C). Xaiv raws li koj qhov tseem ceeb.

PTFE high-temperature npuag (PTFE membrane khoom) yog qhov kev xaiv zoo tshaj plaws rau tensile architecture. Cov txiaj ntsig tseem ceeb: 30+ lub neej nyob sab nraum zoov, qhov chaw tu tus kheej (cov dej nag ntxuav cov av), muag lub teeb kis tau tus mob (6-13%), Chav Kawm A hluav taws kub, thiab lub zog zoo li steel ntawm qis dua 1.5 kg / m². Siv nyob rau hauv chaw ntau pob, tshav dav hlau, thiab lub tsev iconic thoob ntiaj teb.

PTFE high-temperature npuag muaj cov tshuaj tiv thaiv tshwj xeeb, tiv taus cov kua qaub, alkalis, cov kuab tshuaj organic, thiab corrosive gases. Tsab ntawv xov xwm no qhia txog nws cov tshuaj tiv thaiv, kev txwv (molten alkali hlau, muaj zog fluorinating cov neeg ua haujlwm), thiab cov ntsiab lus tseem ceeb xws li kub, concentration, thiab kev ntxhov siab.

PTFE impregnation tsis txwv rau fiberglass daim ntaub. Kab lus no qhia txog 7 lwm cov substrates - aramid, carbon fiber, PBI, ntxeem tau hlau, graphite, asbestos (phased tawm), thiab ceramic fillers - nrog lawv cov txheej txheem nta, zoo, kev txwv, thiab cov ntawv thov tseem ceeb.

Kab lus no piav qhia vim li cas cov ntaub ntawv tsis muaj alkali-dawb fiberglass yog qhov nyiam substrate rau PTFE high-temperature ntaub. Nws npog cov tshuaj sib txuas ntawm silane coupling cov neeg ua haujlwm thiab cov khoom siv lub cev tseem ceeb xws li thermal stability, seem stability, thiab corrosion kuj - kom ntseeg tau tias kev ua haujlwm ntev nyob rau hauv ib puag ncig hnyav.