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 hauv 260 ° C rau kev ua tau zoo.

PTFE high-temperature npuag (PTFE-coated fiberglass) yog zoo tagnrho rau cov khoom noj khoom haus conveyor siv vim nws 260 ° C 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.

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 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 kev yooj yim dua, hluav taws xob rwb thaiv tsev, 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+ xyoo sab nraum zoov lub neej, qhov chaw tu tus kheej (cov dej nag ntxuav cov av), muag lub teeb kis tau tus mob (6-13%), Chav Kawm A qhov hluav taws kub, thiab cov hlau zoo li lub zog qis dua 1.5 kg / m². Siv nyob rau hauv chaw ntau pob, tshav dav hlau, thiab cov tsev iconic thoob ntiaj teb.

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.