PTFE high-temperature daim kab xev ua haujlwm tseem ceeb hauv kev tsim khoom semiconductor, tsis yog cov khoom siv dav dav. Cov ntawv thov tseem ceeb: wafer-theem kev tiv thaiv (plasma etching masking, CMP backside tiv thaiv, CVD / PVD masking), ntim txheej txheem (xov hlau fixation, soldering daim npog qhov ncauj rau PCBs), thiab cov khoom tu (anti-static roller wrapping, cleanroom marking). Ultra-huv yuav tsum tau: tsawg halogens (tiv thaiv daim ntawv cog lus ncoo corrosion), tsawg siloxanes (<500 ppm, tiv thaiv insulating particle tsim), uas tsis muaj hlau ions (<1 ppm txhua), ISO Class 4 cleanroom slitting / ntim, 10⁶-10⁹ Ω nto resistivity, thiab tsawg TVOC emissions.

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). High-purity raw cov ntaub ntawv kom FDA-raws li, lub neej ntev, kev ua tau zoo 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. Txoj kev ua kom zoo dua: 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.

Kev kho mob-qib PTFE high-temperature daim kab xev ua ke biocompatible PTFE substrate nrog platinum-kho silicone nplaum. Cov yam ntxwv tseem ceeb: ISO 10993 ua raws (tsis muaj cytotoxicity, rhiab heev, lossis khaus), tiv taus rov ua kom tsis muaj menyuam (chaw / EO / gamma), 260 ° C kub ua haujlwm. Kev ceev faj tseem ceeb: tsis txhob siab tshaj 260 ° C (cov pa phem tshaj 300 ° C), gamma irradiation yuav ua rau embrittlement, validate sterilization txoj kev, thiab thov kom tag nrho cov ntaub ntawv ua raws (ISO 10993 cov ntaub ntawv, MSDS, aging ntaub ntawv). Tsis yog siv rau cov ntshav ncaj qha los yog cog qoob loo tshwj tsis yog tias muaj kev lees paub tshwj xeeb.

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 muaj ib coefficient ntawm thermal expansion (CTE) ntawm 30-60 ppm / ° C (warp / weft) - siab tshaj fiberglass ib leeg tab sis deb qis dua ntshiab PTFE (100-200 ppm / ° C). PTFE raug hloov pauv sai sai (1-2%) ntawm 19 ° C thiab 30 ° C theem hloov. Txhawm rau kom tsis txhob buckling, tearing, thiab delamination: tsim clearances dawb expansion, tsis txhob tensioning los ntawm theem hloov kub, siv tsis siv neeg tensioners ntawm conveyor siv, thiab siv anti-buckling overlap tsim. Kev tshuaj xyuas tsis tu ncua rau cov dej txias yog qhov tseem ceeb.

PTFE daim kab xev reusability nyob ntawm plaub yam: nplaum formulation (siab crosslink ceev, tsis tshua muaj silicone migration, microphase qauv rau repositionable tack), substrate anchoring (surface activation + primer los tiv thaiv tag nrho cov nplaum hloov), backside txheej (tso txheej los tiv thaiv cov nplaum thaum lub sij hawm unwinding), thiab kev tuav kom zoo (ntxuav qhov chaw, huv si). Dej-ntxuav tau hloov kho cov nplaum tuaj yeem rov qab> 90% tack tom qab ntxuav.

PTFE high-temperature fabric baking mats muaj plaub qhov txiaj ntsig tseem ceeb: kev ua haujlwm tsis zoo (tsis muaj roj lossis hmoov nplej, cov khoom noj qab zib tso tawm kom huv), qhov kub ntau (-70 ° C txog 260 ° C, muaj kev nyab xeeb rau qhov cub rau lub freezer), rov siv dua (txhiab ntau lub voj voog, yooj yim los ntxuav), thiab txawm tias kub kub (tiv thaiv kub hnyiab, sib npaug xim av). Khoom noj khoom haus-qib FDA raws, lawv outlast daim ntawv parchment thiab outperform silicone mats nrog zoo dua tshav kub hloov thiab finer nto zoo nkauj.

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).

Fiberglass npuag thermal shrinkage yog thawj qhov ua rau PTFE daim kab xev seem tsis ruaj khov. Ntawm PTFE sintering kub (360-400 ° C), residual weaving stress yog tso tawm. Yog tias tsis muaj kev txwv, cov ntaub shrinks; Yog tias txwv tsis pub, kev ntxhov siab latent raug kaw, ua rau tom qab shrinkage thaum lub sij hawm kho (150-200 ° C) thiab siv cua sov kawg. Kev daws: siv pre-heat-set fiberglass nrog <0.5% shrinkage ntawm 400 ° C, tshem tawm cov residual kev nyuaj siab ua ntej txheej.