Tsab ntawv xov xwm no suav nrog cov ntsuas kev ua haujlwm tseem ceeb rau PTFE cov kab xev kub kub siv hauv lub tshuab nqus tsev, lub tshuab nqus tsev kho cua sov thiab cov chaw zoo sib xws. Cov kev cai tseem ceeb sib txawv heev ntawm kev siv atmospheric: outgassing yog qhov tseem ceeb tshaj plaws (TML≤1%, CVCM≤0.1%; aerospace / optical qib yuav tsum TML≤0.5%, CVCM≤0.01%); Qhov kub thiab txias yuav tsum tau kuaj xyuas rau ob qho tib si PTFE substrate (260 ° C) thiab nplaum txheej; tshwj xeeb purified low-outgassing silicone PSA yuav tsum tau tiv thaiv siloxane paug; high-temperature tuav lub zog tiv thaiv creep thiab ntug lifting; huv si xav tsis muaj fiber ntau los thiab cov ntsiab lus ionic tsawg; anti-static daim kab xev (nto resistivity 10⁶-10⁹ Ω / sq) tiv thaiv ESD kev puas tsuaj; plasma kuj yuav tsum raug soj ntsuam rau cov txheej txheem sputtering / PECVD; thermal shrinkage qis dua 2% ua kom cov npog qhov tseeb.

Kab lus no piv rau chav kub thiab kub kub kom loj hlob ntawm silicone siab-rhiab nplaum nplaum rau PTFE daim kab xev. Kub-kub maturation (120-180 ° C) tsim dense crosslinked tes hauj lwm nrog muaj zog cohesive zog, tiv thaiv cov nplaum residue tom qab tev. Nws tsim cov tshuaj anchoring bonds nrog PTFE substrates ntawm primer co-curing, tshem tawm delamination txaus ntshai. High-temperature maturation kuj tshem tawm cov tsis tshua muaj molecular volatiles ua ntej xa khoom, tiv thaiv bubbling thiab silicone roj paug thaum thawj cua sov.

Daim ntawv qhia no npog PTFE high-temperature daim kab xev xaiv rau kev txhaj tshuaj molding demolding thiab anti-stick daim ntaub ntawv. Kev xaiv kub raws li: ≤260 ° C rau cov yas dav dav (tus qauv silicone PSA daim kab xev, 0.13-0.18mm); 260-300 ° C rau high-temperature engineering yas xws li PC, PA66, POM (high-temp silicone nplaum, 0.18-0.25mm); 300-400 ° C rau PEEK, LCP, PPS nyob ze cov neeg ua haujlwm kub (cov nplaum nplaum tsis ua haujlwm; siv cov ntaub nplaum tsis muaj PTFE lossis PFA zaj duab xis). Cov khoom siv raws li kev xaiv: tacky cov ntaub ntawv xav tau siab tso tawm ntshiab PTFE nto; iav / ntxhia ntim cov ntaub ntawv yuav tsum tau ua haujlwm hnyav 0.25mm + hnav-resistant daim kab xev; corrosive additives xav tau chemically resistant nplaum thiab ntom substrate; static-sensitive daim ntaub ntawv yuav tsum tau anti-static dub PTFE daim kab xev.

PTFE-coated fiberglass daim ntaub yog dav siv nyob rau hauv cov roj hmab ua rau nws cov cua kub tsis kam, tsis-stick khoom, thiab tsis muaj kev sib txhuam. Cov ntawv thov tseem ceeb muaj xws li: tso cov ntaub ntawv rau lub phaj / lub tshuab nqus tsev vacuum thiab lub log molding; tsis-stick conveyor siv rau qhib mills, calenders, thiab txias kab; interleave ntaub rau semi-tiav roj hmab cia; tshwj xeeb tuav ntawm silicone thiab fluororubber; thiab cov tais diav rau tom qab kho. Cov txiaj ntsig muaj xws li tshem tawm cov pwm adhesion, txo cov neeg siv kev tso tawm, tiv thaiv cov menyuam qhwv, thiab ua kom du demolding.

PTFE daim kab xev rau cov yeeb nkab tshuaj / lub nkoj los tiv thaiv corrosion, tsis yog-stick, thiab kev tiv thaiv sealing yuav tsum muaj kev sib txuam substrate, nplaum nplaum, thiab cov tshuaj lom neeg. Silicone PSA raug pom zoo rau 200-260 ° C nrog acids / alkali; acrylic PSA tiv thaiv cov kuab tshuaj organic tab sis txwv qhov kub thiab txias rau ≤150 ° C. Rau HF, boiling> 80% alkali, los yog chlorine trifluoride, siv PTFE-tsuas hauv ob sab phlu (tsis muaj organic nplaum). Tseem ceeb: nplaum yog qhov txuas tsis muaj zog, tsis yog PTFE nws tus kheej.

PTFE daim kab xev tuav lub zog yog txhim kho los ntawm txheej txheej thiab kho txheej txheem optimization. Txheej: primer txheej (0.5-2μm silane primer tiv thaiv cov nplaum nplaum), nplaum tuab 30-60μm (zoo rau tuav lub zog), nqus defoaming, thiab 5-10μm pom. Curing: stepwise cua sov (80-100 ° C hnyav tshem tawm → 120-140 ° C shaping → 150-220 ° C sib sib zog nqus crosslinking), tom qab-kho (40-60 ° C rau 24-48h kom so kev ntxhov siab), thiab tsis tshua muaj kev thauj mus los los tiv thaiv kev ntxhov siab los ntawm substrate shrinkage. Cov primer yog qhov tseem ceeb rau PTFE lub zog qis.

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.

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 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.

Dav-temperature-range PTFE daim kab xev yuav tsum muaj silicone PSA uas tswj adhesion ntawm -70 ° C mus rau 260 ° C. Key design elements: primer-anchored transition layer (prevents delamination), sea-island microstructure (MQ resin islands + polysiloxane continuous phase), gradient crosslinking (high-density inner layer for creep resistance, low-density outer layer for low-temp tack), and heat-stabilized fillers (cerium oxide for oxidation resistance). Phenyl-modified siloxane ntu txo qis-kub crystallization, ua kom yooj yim hauv qab -100 ° C.