PTFE high-temperature daim kab xev siv rau tshav kub-sealing riam thiab sealing strips muab plaub lub ntsiab tseem ceeb: tiv thaiv molten yas adhesion (tso tseg downtime), tiv thaiv kim sealing tuag, homogenizes tshav kub / siab rau zoo seals, thiab txo cov zaj duab xis kev sib txhuam. Fiberglass-backed daim kab xev (0.13-0.25 mm) nrog silicone PSA (≥260 ° C) yog pom zoo. Anti-static dub daim kab xev rau high-speed kab.

Cov dej vapor barrier cov cuab yeej ntawm PTFE nplaum daim kab xev yog txiav txim siab feem ntau los ntawm txheej tsis xws luag (micropores, microcracks, fiber wicking) es tsis yog PTFE's intrinsic hydrophobicity. Pure PTFE zaj duab xis tsuas yog nruab nrab WVTR. Multi-txheej txheej thiab lamellar fillers (mica, iav flakes) tsim cov nyhuv labyrinth, drastic txo vapor kis tau tus mob. Rau high-humidity sealing, qhia densified txheej.

Creep kuj ntawm PTFE high-temperature adhesive daim kab xev nyob rau hauv lub sij hawm ntev load (tshwj xeeb tshaj yog nyob rau ntawm 200-260 ° C) yog txiav txim los ntawm ob yam: silicone PSA crosslink ceev (siab dua crosslinking tiv thaiv ntws) thiab substrate hom (fiberglass-reinforced PTFE resists txias creeps; ntshiab PTFE zaj duab xis creeps). Uncrosslinked nplaum ua tsis tau sai thaum kub kub. Thicker nplaum txheej ua rau muaj kev pheej hmoo nkag.

Rau PTFE high-temperature daim kab xev siv nyob rau hauv abrasive zawv zawg kev sib txhuam daim ntaub ntawv, standard non-stick thiab tshav kub kuj tsis txaus. Cov txheej txheem xaiv tseem ceeb: Taber abrasion poob (<15 mg / 1000 cycles), hloov kho PTFE txheej (carbon / graphite / MoS₂), PV txwv cov ntaub ntawv, lub zog substrate (≥200 N / cm), thiab mating nto roughness (Ra 0.2-0.4 μm). Kev tiv thaiv ntug zoo thiab kev sib txuas tag nrho yog qhov tseem ceeb rau lub neej ntev.

PTFE substrate yog inherently ntsev tsuag resistant (dej nqus <0.01%). Txawm li cas los xij, kev ua tau zoo ntawm daim kab xev tag nrho yog nyob ntawm hom nplaum: silicone PSA tiv taus qhov chaw hauv hiav txwv (500-1000h ntsev tshuaj tsuag,> 80% tev tuav); acrylic PSA ua tsis tau. Kev kho saum npoo kom zoo, daim ntawv thov tsis muaj npuas, thiab ntug sealing nrog silicone sealant yog qhov tseem ceeb rau kev cia siab rau lub sijhawm ntev ntawm ntug dej hiav txwv thiab cov hlab ntsha.

PTFE fiberglass daim kab xev yuav tsum muaj peb daim ntawv pov thawj kev nyab xeeb tseem ceeb: UL (kev nyab xeeb hluav taws xob thiab nplaim taws), FDA (kev sib cuag zaub mov), thiab ISO 9001: 2015 (kev tswj kom zoo). Cov ntaub ntawv pov thawj muaj kev ua tau zoo, kev ua haujlwm ntev dua, thiab txo tus nqi ntawm cov tswv cuab txawm tias tus nqi siab dua. Ib txwm txheeb xyuas cov ntawv pov thawj ncaj qha nrog lub cev tawm.

PTFE high-temperature daim kab xev yog siv nyob rau hauv peb cov ntaub ntawv kho mob tiers: sterilization cov cuab yeej tiv thaiv (autoclave trays, tshav kub-seal ntim), ntsuas nto kev kho mob (tsawg-kev sib txhuam txheej, hluav taws xob rwb thaiv tsev), thiab implantable devices (vascular grafts, sutures). Biocompatibility raug txheeb xyuas los ntawm ISO 10993, thiab FDA 21 CFR 177.1550 tsim cov khoom siv kev nyab xeeb.

PTFE high-temperature daim kab xev tsis zoo rau ionizing hluav taws xob. Thaum tsuas yog 1 kGy gamma raug, lub zog tensile poob rau ~ 25% ntawm thawj. Nws tsuas yog tsim nyog rau qhov chaw qis qis (khoom noj / kho mob kom tsis muaj menyuam <10 kGy). Rau kev lag luam nuclear lossis lub dav hlau, siv polyimide lossis PEEK hloov.

Rau PTFE high-temperature tapes nyob rau hauv lub sij hawm ntev immersion, PTFE substrate tseem chemically inert, tab sis cov nplaum txheej yog qhov tsis muaj zog. Dej tsis muaj zog silicone PSA; dej ntsev accelerates corrosion. Rau cov tshuaj phem, fluorosilicone los yog perfluoropolyether adhesives - los yog nplaum-dawb PTFE daim kab xev - yuav tsum tau. Peel lub zog poob mus txog 40% tom qab 48 teev hauv dej.

PTFE high-temperature daim kab xev siv nyob rau hauv daim ntawv thov kev sib cuag zaub mov yuav tsum nyob rau hauv cov kev txwv kub: ≤260 ° C rau kev siv tas mus li, ≤300 ° C rau luv peaks (feeb), thiab tsis txhob siab tshaj 327 ° C (decomposition). FDA thiab EU cov kev cai tsis qhia txog lub sijhawm txwv thoob ntiaj teb - lub sijhawm tiv thaiv kev nyab xeeb nyob ntawm qhov ntsuas kub thiab yuav tsum tau txheeb xyuas los ntawm kev kuaj kev tsiv teb tsaws simulating cov xwm txheej.