1: Rigid PVC is one of the most widely used plastic materials. PVC material is an amorphous material
2: In actual use, PVC materials are often added with stabilizers, lubricants, auxiliary processing agents, pigments, impact agents and other additives.
3: PVC material has non flammability, high strength, weather resistance and excellent geometric stability.
4: PVC has strong resistance to oxidants, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids, such as concentrated sulfuric acid and concentrated nitric acid, and is not suitable for contacting aromatic hydrocarbons and chlorinated hydrocarbons.
5: The melting temperature of PVC during processing is a very important process parameter. If this parameter is improper, it will lead to the problem of material decomposition.
6: The flow characteristics of PVC are quite poor, and its process range is very narrow. In particular, PVC materials with large molecular weight are more difficult to process (such materials usually need to add lubricant to improve flow characteristics), so PVC materials with small molecular weight are usually used.
7: Shrinkage of PVC is quite low, generally 0.2~0.6%
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