Cov iav hloov pauv kub (Tg) ntawm silicone siab-rhiab nplaum nplaum yog nyob ib ncig ntawm -120 ° C - qis dua li acrylic nplaum. Qhov no ultra-low Tg khaws PTFE high-temperature daim kab xev hloov tau yooj yim thiab nplaum txawm nyob rau ntawm -70 ° C, tiv thaiv nkig tawg thiab ua kom muaj kev ruaj ntseg adhesion hauv cov ntawv thov cryogenic.

PTFE high-temperature daim kab xev tuaj yeem tawg los yog tawg nyob rau hauv rov khoov thiab qhib tej yam kev mob. Kab lus no piav qhia yuav ua li cas tiv thaiv qhov no los ntawm kev xaiv cov substrate kom zoo (iav fiber ntau reinforced), pom thickness (0.18mm raws li tus qauv), silicone nplaum xaiv, thiab cov txheej txheem installation kom raug.

PTFE high-temperature npuag muaj cov tshuaj tiv thaiv tshwj xeeb, tiv taus cov kua qaub, alkalis, cov kuab tshuaj organic, thiab corrosive gases. Tsab ntawv xov xwm no qhia txog nws cov tshuaj tiv thaiv, kev txwv (molten alkali hlau, muaj zog fluorinating cov neeg ua haujlwm), thiab cov ntsiab lus tseem ceeb xws li kub, concentration, thiab kev ntxhov siab.

Kev xaiv ntawm cov ntawv tso tawm lossis zaj duab xis substrate thiab tso tawm tus neeg sawv cev ncaj qha cuam tshuam rau kev ruaj khov thiab kev ua haujlwm ntawm PTFE cov kab xev kub kub. Kab lus no sib piv PET vs. kraft daim ntawv substrates thiab silicone vs. fluorinated tso cov neeg ua haujlwm, pom zoo ua ke kom zoo rau xoom-residue tev thiab kev ntseeg tau ntev.

PTFE high-temperature tapes yog dav siv rau hluav taws xob rwb thaiv tsev, tab sis high-frequency thiab high-voltage tej yam kev mob ua rau muaj kev pheej hmoo tshwj xeeb: hluav taws xob tawg, ib nrab paug, thermal aging, high-frequency teeb liab poob, thiab ib puag ncig rhiab heev. Kab lus no piav qhia txhua qhov kev pheej hmoo thiab yuav ua li cas zam lawv.

PTFE impregnation tsis txwv rau fiberglass daim ntaub. Kab lus no qhia txog 7 lwm cov substrates - aramid, carbon fiber, PBI, ntxeem tau hlau, graphite, asbestos (phased tawm), thiab ceramic fillers - nrog lawv cov txheej txheem nta, zoo, kev txwv, thiab cov ntawv thov tseem ceeb.

Ua pa PTFE cov ntaub ntawv kub-kub ua ke ua ke cov khoom tsis yog nplaum, thermal stability, thiab huab cua permeability. Kab lus no tshawb txog nws cov ntawv thov tseem ceeb hauv kev ziab khaub ncaws, kev ua zaub mov, kev tsim khoom sib xyaw, khoom siv hluav taws xob, pneumatic conveying, kev tiv thaiv ib puag ncig, thiab cov khoom siv hauv tsev.

Kab lus no piav qhia txog yuav ua li cas tiv thaiv kev kis kab mob thiab kev ua haujlwm puas tsuaj ntawm sab tsis-nplaum ntawm PTFE daim kab xev kub kub thaum txheej txheem txheej. Cov tswv yim tseem ceeb muaj xws li kev tswj hwm qhov chaw (kev kho qhov chaw meej), kev sib cais ntawm lub cev (cov yeeb yaj kiab tiv thaiv, cov yob tsis lo, zoned ziab), thiab kev tswj cov txheej txheem ua kom zoo.

Kab lus no piav qhia vim li cas cov ntaub ntawv tsis muaj alkali-dawb fiberglass yog qhov nyiam substrate rau PTFE high-temperature ntaub. Nws npog cov tshuaj sib txuas ntawm silane coupling cov neeg ua haujlwm thiab cov khoom siv lub cev tseem ceeb xws li thermal stability, seem stability, thiab corrosion kuj - kom ntseeg tau tias kev ua haujlwm ntev nyob rau hauv ib puag ncig hnyav.

Txhawm rau thov PTFE daim kab xev kub kub ruaj khov rau ntawm qhov nkhaus thiab qhov tsis sib xws yam tsis muaj npuas thiab ntug warping, txheej txheem kev ua haujlwm yog qhov tseem ceeb, suav nrog kev ua kom zoo hauv substrate pretreatment, kev tshaj lij daim ntawv thov thiab kev ntsuas kom raug. Ntawm lawv, substrate pretreatment yog cov kauj ruam tseem ceeb tshaj plaws, uas txiav txim siab txog 70% ntawm qhov kawg ntawm cov nyhuv.