Blister ntim tshuab blister PVC stability

Lub softening point ntawm polyvinyl chloride resin yog tsawg, txog 75-80 degree , thiab embrittlement kub yog qis dua -50 ~ -60 degree . Kev siv mus sij hawm ntev ntawm cov khoom siv feem ntau yuav tsum tsis pub tshaj 55 degree, thiab cov mis tshwj xeeb tuaj yeem ncav cuag 90 degree. Yog hais tias cov polyvinyl chloride resin yog lub taub hau-rau-lub ntsej muag sib cuag nto ntshai ntawm cov qauv kab, tsis muaj cov ceg sab hauv thiab cov nyiaj tsis txaus ntseeg, txawm hais tias C-Cl daim ntawv cog lus lub zog me me, kev ruaj ntseg ntawm polyvinyl chloride resin yuav tsum kuj yuav tsum tau. siab. Txawm li cas los xij, txawm tias cov high-purity polyvinyl chloride resin pib emit hydrogen chloride gas thaum nws siab tshaj 100 degree lossis raug ultraviolet hluav taws xob ntev. Nws qhia tias muaj cov pab pawg ntse lossis cov qauv tsis ruaj khov hauv nws cov qauv molecular. Lub sij hawm ntev, qhov degradation ntau dua, thiab qhov kub thiab txias, qhov degradation ceev ceev, tshwj xeeb tshaj yog nyob rau hauv muaj oxygen lossis cua.