Raw khoom purity yog lub hauv paus tseem ceeb ntawm PTFE high-temperature ntaub zoo. Cov impurities (cov pib residual, surfactants, hlau ions, contaminated sizing agents) ua rau ntxov ntxov thermal degradation (npua, blistering saum toj no 260 ° C), uneven non-stick nto (adhesion anchor ntsiab lus), txo hluav taws xob rwb thaiv tsev (dielectric poob, qis dua tawg voltage), tsis muaj zog mechanical zog (kev nyuaj siab concentration, / tawg). Cov ntaub ntawv purity siab kom ntseeg tau tias FDA ua raws, lub neej ntev, ua haujlwm siab PTFE daim ntaub.

PTFE-coated fiberglass ntaub sintering yuav tsum tau tuav lub sij hawm ntawm 370-400 ° C. Nruam rauv: 30-90s (nyias) mus rau 3-5+ min (thick). Batch furnaces: 5-15 feeb. Under-sintering ua rau opaque, ntxhib txheej uas tev; over-sintering ua rau yellowing, brittleness, thiab tshuaj fluoride gas tso tawm. Cov txheej txheem optimization: siv cov ntsuas kub ntawm lub cub tawg, ua qhov kev tshuaj xyuas qhov muag (semi-pob tshab, hloov tau), thiab ua cov ntawv rub tawm. Nco ntsoov xyuas kom tag nrho-thickness kub uniformity.

PTFE high-temperature npuag yuav tsum tau ceev faj tuav kom muaj kev nyab xeeb thiab siv tau ntev. Cov lus ceeb toom tseem ceeb: tsis txhob siab tshaj 260 ° C (siab dua 320 ° C tso pa tawm cov pa phem), tsis txhob muaj cov pa phem (ntxuav txheej, nthuav tawm fiberglass), tsis muaj kev ntxuav (steel wool puas tsis-stick nto), cia thermal expansion clearance (tiv thaiv tearing), thiab hloov thaum blistered los yog tev. Khaws dov, kom deb ntawm UV. Hnav cov hnab looj tes tiv thaiv tshav kub thaum tuav.

PTFE high-temperature npuag yog qhov tseem ceeb hauv kev lag luam tsoos tsho interlining. Cov ntawv thov tseem ceeb: seamless endless conveyor siv rau cov tshuab fusing tas li (tiv thaiv kub yaj nplaum nplaum, tsis muaj wrinkle conveying), non-stick cover thiab padding daim ntaub rau tiaj tshav kub presses (tiv thaiv platens los ntawm nplaum kab mob), conveyor siv rau dot paste / hmoov txheej kab (txheej txheem dotsing ntswj thaum lub sij hawm kev sib cuag nrog hlau) qauv nias. Thickness ranges ntawm 0.13mm (lub teeb padding) mus rau 0.55mm (hnyav-duty conveyor txoj siv sia).

Anti-static PTFE npuag yog ua tiav los ntawm ob txoj hauv kev tseem ceeb: txheej doping (sib xyaw ua cov khoom siv xws li cov pa roj carbon dub rau hauv PTFE emulsion, tsim lub network percolation ntawm qhov tseem ceeb) thiab substrate weaving (embedding conductive fibers rau hauv fiberglass daim ntaub). Surface resistivity yog tswj ntawm 10⁵–10⁹ Ω. Lub hauv paus ntsiab lus: tsim ib txoj hauv kev uas tso cov nqi hluav taws xob zoo li qub tam sim, tiv thaiv kev puas tsuaj. Grounding yog qhov yuav tsum tau ua kom muaj txiaj ntsig zoo.

Kev ziab yog ib kauj ruam tseem ceeb hauv PTFE high-temperature fabric production. Cov teeb meem tshwm sim muaj xws li: tawg (hnyav qhuav, tawv nqaij tawv), txheej tsiv teb tsaws (cov khoom txav mus rau saum npoo, tsis muaj zog sab hauv daim ntawv cog lus), pinholes / hlwv (cua hauv huab cua lossis chav dej), cov pob dawb thiab chalking (surfactant migration lossis tsis tiav fusion), yellowing / coking (overheating ntawm additives), delamination (shrinkage theem), ntau tshaj qhov kev nyuab siab. shrinkage), nto qhuav tab sis sab hauv ntub dej (skinning ntxiab ya raws), thiab tuab npoo (cov nyhuv kas fes). Cov kev daws teeb meem suav nrog kev tswj kom qhuav profiles, kom qhov cua zoo, thiab substrate pretreatment.

Ua ntej ziab ntawm fiberglass ntaub yog qhov tseem ceeb rau PTFE txheej tom ntej, resin impregnation, lossis lamination. Peb txoj kev kho tseem ceeb: tshem tawm cov dej noo ntawm 105-120 ° C (10-30 min nyob ntawm qhov hnyav), dewaxing / thermal tu ntawm 300-450 ° C (LOI <0.1%, zam> 500 ° C), thiab preheating ntawm 60-100 ° C ua ntej txheej. Tswj qhov kub ntawm qhov sib xws (± 5 ° C), yuam kom dehumidification, thiab tiv thaiv cov ntaub qhwv silane hauv qab 110 ° C. Khaws cov ntaub qhuav hauv lub hnab ntim khoom lossis chav qhuav (<30 ° C, <40% RH).

PTFE high-temperature npuag (PTFE-coated fiberglass) muaj plaub qhov txiaj ntsig zoo raws li kev tiv thaiv corrosion hauv ob sab phlu: tshuaj inertness (resists aqua regia, muaj zog alkalis, cov kuab tshuaj), qhov kub ntau (-70 ° C txog 260 ° C tas mus li, 350 ° C ncov), qhov ntev stability (<0.5% non-staining), elongation thiab stains. Siv nyob rau hauv cov kav dej tshuaj, desulfurization yees, pickling tank, thiab khoom noj khoom haus/pharma. FDA qib muaj.

PTFE high-temperature npuag muaj 6 qhov zoo tshaj plaws raws li kev luam ntawv conveyor siv: tsis yog-stick nto (luam ntawv muab tshuaj txhuam thiab number case tso tawm kom huv), 260 ° C kub tsis kam (nqus kom qhuav), qhov ntev stability (<0.5% elongation, meej sau npe), tshuaj inertness (tiv corrosive pastes), tsis muaj kev sib txhuam (cov xim zoo li qub, kev ua haujlwm zoo li qub), thiab kev ua haujlwm zoo. Qhov zoo tshaj plaws rau kev tshuaj ntsuam luam ntawv, luam ntawv digital, thiab daim ntawv thov hloov hluav taws xob.

PTFE high-temperature npuag kev pab cuam lub neej txawv heev los ntawm daim ntawv thov. Cov tshuaj tiv thaiv corrosion tuaj yeem siv tau 3+ xyoo (4x ntev dua li roj hmab). Cov tais ci zaub mov lub hli tas los nrog me ntsis degradation. Cov khoom siv conveyor siv los ntawm kev sib txhuam. PV lamination (150 ° C, EVA tiv tauj) muaj lub neej nruab nrab. Cov ntawv thov kev sib txhuam hnyav (abrasive discs) muaj lub neej luv. Cov yam tseem ceeb: tswj qhov kub thiab txias (nyob twj ywm ≤260 ° C), tsis txhob muaj cov creases ntse, ntxuav tsis tu ncua, thiab hloov raws sij hawm thaum blistered los yog yellowed.