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.

Kev tu thiab tu kom zoo txuas ntxiv lub neej ntawm PTFE high-temperature ntaub. Ntxuav tom qab siv thiab tom qab txias. Siv cov txhuam hniav mos, cov tshuaj ntxuav tes tsis huv, lossis dej cawv rau stains. Tsis txhob siv cov kua qaub/alkalis, tshuaj dawb, lossis hlau scrapers. Tsis tu ncua silicone roj lubrication txo hnav. Ua raws li cov lus qhia no txhawm rau tiv thaiv cov txheej txheem puas tsuaj.

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. Kab lus no qhia txog nws cov tshuaj tiv thaiv, kev txwv (molten alkali hlau, muaj zog fluorinating agents), thiab cov yam tseem ceeb xws li kub, concentration, thiab mechanical stress.