Advantages and disadvantages of PVC plastic
Advantages: Rigid PVC is one of the most widely used plastic materials. PVC material is a kind of non-crystalline material.
PVC material is often added in the actual use of stabilizer, lubricant, auxiliary processing agent, pigment, impact agent and other additives.
PVC material has non-flammability, high strength, weather resistance and excellent geometric stability.
PVC is highly resistant to oxidizing agents, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and nitric acid, and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons.
Disadvantages: The flow characteristics of PVC are quite poor, and its process range is very narrow. In particular, large molecular weight PVC materials are more difficult to process (this material is usually added to improve the flow characteristics of lubricants), so usually used are small molecular weight PVC materials.
The shrinkage rate of PVC is quite low, generally 0.2--0.6%.
PVC is easy to release toxic gases in the molding process.
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