What are the six major properties of PVC compound?

PVC products have the advantages of chemical stability resistance, abrasion resistance, high strength, good electrical insulation, low price, good air tightness, etc. What are the six major properties of PVC compound?
1. Physical properties of PVC compound
PVC resin is a thermoplastic with an amorphous structure. Under ultraviolet light, hard PVC produces light blue or purple white fluorescence, while soft PVC emits blue or blue white fluorescence. The physical and mechanical properties of polyvinyl chloride depend on the molecular weight of the resin, the content of plasticizers and fillers.
2. Thermal performance of PVC compound
The softening point of polyvinyl chloride resin is close to the decomposition temperature. In order to ensure normal molding and processing, two most important process indicators are specified for polyvinyl chloride resin, namely decomposition temperature and thermal stability.

3. Stability of PVC compound
PVC resin is a relatively unstable polymer that can also degrade under the action of light and heat. The process involves the release of hydrogen chloride and structural changes, but to a lesser extent.
4. Electrical properties of PVC compound
The electrical performance of PVC depends on the amount of residue in the polymer, the type and quantity of various additives in the formula. The electrical properties of PVC are also related to the heating conditions. Unlike non polar polymers such as polyethylene and polypropylene, PVC's electrical properties change with frequency and temperature, such as a decrease in dielectric constant with increasing frequency

5. Chemical properties of PVC compound
PVC has good chemical stability. PVC is stable to most inorganic acids and bases. It is insoluble when heated and can be decomposed to release hydrogen chloride.
6. Processing performance of PVC compound
PVC is an amorphous high polymer. Due to its poor thermal stability, it contains a small amount of HCl released at this temperature, which promotes its further decomposition. Alkaline stabilizers and HCl must be added to suppress its catalytic cracking reaction. For PVC, resin properties related to processing include particle size, thermal stability, molecular weight, bulk density, purity and foreign impurities, and porosity.