Polyimide adhesive daim kab xev yog ib qho tseem ceeb ntawm txhua tus kws kho hluav taws xob lub cuab yeej. Nws paub txog nws cov khoom zoo heev adhesion thiab nws lub zog kub-kub. Nws tseem yog cov khoom siv tua tus kheej uas tsis muaj dab tsi qab thaum nws hlawv.
Polyimide daim kab xev uas txuas rau silicone-raws li lub siab-rhiab nplaum nplaum, muab nws lub peev xwm los lo rau yuav luag txhua qhov chaw. Nws kuj tseem kub heev, uas yog ib qho tseem ceeb rau daim ntaub ntawv xws li daim npog qhov ncauj thaum yoj soldering.
Cov chemistry ntawm polyimide yog qhov tshwj xeeb uas nws yog ib qho ntawm cov khoom muaj zog tshaj plaws ntawm kev ua lag luam. Nws tuaj yeem tiv taus qhov kub txog li 300degC, ua rau nws xaiv zoo rau ntau daim ntawv thov.
Nws tseem yog cov khoom siv ntau yam, uas txhais tau tias nws tuaj yeem siv tau ntau txoj hauv kev. Nws yog ib qho kev xaiv zoo rau hluav taws xob rwb thaiv tsev ntawm capacitors thiab transformers, nrog rau cov hlau nplaum sib nqus. Nws tseem yog ib qho tseem ceeb rau kev npog lub ntsej muag thaum lub sij hawm yoj soldering, raws li nws tiv thaiv cov ntiv tes kub los ntawm tshav kub ntawm cov txheej txheem reflow.
Ntau hom polyimide adhesive daim kab xev muaj, nrog rau ib leeg-sab thiab ob-sided versions uas siv acrylic, epoxy, roj hmab, los yog silicone-raws li adhesives. Txhua hom muaj cov txiaj ntsig sib txawv.
Yog tias koj tau ua haujlwm hauv kev lag luam hluav taws xob, ces koj yuav paub tias polyimide yog ib qho tseem ceeb ntawm cov khoom siv. Nws feem ntau hu ua Kapton daim kab xev lossis nplaum Kapton thiab yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob.
Naikos muab polyimide daim kab xev nyob rau hauv ntau yam thicknesses thiab dav. Lub tuam txhab tshwj xeeb hauv cov khoom lag luam zoo, tus nqi qis, thiab kho kom haum raws li qhov xav tau ntawm nws cov neeg siv khoom.
Peb tus qauv HT version yog tsim rau cov ntawv thov txog li 260degC / 500degF tab sis tuaj yeem hloov kho kom tau raws li cov kev xav tau tshwj xeeb. HT version siv cov qib tshwj xeeb ntawm silicone nplaum los ua kom nws qhov kub thiab txias.
Rwb thaiv tsev, tshuaj tiv thaiv thiab lwm yam
Polyimide daim kab xev yog xim amber-xim, pob tshab, siab-kub-resistant zaj duab xis nrog lub siab-rhiab silicone nplaum rau txhua sab. Nws yog ib qho kev xaiv nrov rau tooj liab-clad daim kab xev rau kev siv hluav taws xob vim nws muaj qhov tshwj xeeb tsis kam tiv thaiv thermal shock.
Nws yog ib qho yooj yim mus ua hauj lwm nrog, nyias thiab conformable, thiab yuav muab tau yooj yim tshem tawm yam tsis muaj cov nplaum residue. Qhov no ua rau nws yog ib qho kev xaiv zoo rau ntau yam kev siv hauv kev lag luam automotive thiab aerospace.
Qhov sib txawv tseem ceeb ntawm acrylic-based thiab silicone-based polyimide tapes yog tias yav dhau los feem ntau pheej yig dua me ntsis.
Silicone-based polyimide adhesive daim kab xev feem ntau yog siv rau kev siv hluav taws xob thiab tshuaj lom neeg vim nws pheej yig dua li nws cov acrylic counterpart. Nws kuj yog ib qho ruaj khov dua li qhov kev xaiv acrylic thiab yog qhov kev xaiv zoo rau cov txheej txheem rov qab, xws li cov hlau lead-dawb soldering.
Qhov no yog vim nws muaj zog hydrogen bonds uas tsim ntawm qhov kub thiab txias, ua rau nws yog ib qho kev xaiv zoo rau ntau daim ntawv thov kub. Nws kuj muaj ntau yam kev pab cuam, xws li nws cov insulating thiab chemical-resistant zog.
