PVC special material
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Everyone is welcome to discuss topics related to PVC resin special materials. P.S.: Does anyone know about companies that make PVC powder coatings and related technologies?
Generally speaking, PVC special materials mainly refer to the subdivision of PVC-SG5 materials. Mainly divided into tube materials and type materials. Pipes can be subdivided into small pipes and large diameter pipes. The tube material requires a slightly lower molecular weight, a higher porosity, and a smaller apparent density. ； Type materials require a slightly larger molecular weight, a higher oil absorption rate, and a higher apparent density.