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 Linyang - An expert in PVC tarpaulin / PVC film industry since 2002

PVC membrane chemical and physical properties

???PVC film is now widely used in various places, why is it so popular? PVC has gradually won people's favor with its good performance, simple process and many other advantages, and has also been favored by more people. Both pvc film and pvc film have their own characteristics. The chemical and physical properties of pvc film are introduced below.

????Rigid PVC is one of the most widely used plastic materials. PVC is actually a polymer of vinyl, and its material is an amorphous material. In the actual use of PVC materials, stabilizers, lubricants, auxiliary processing agents, colorants, anti-impact agents and other additives are often added. It has non-flammability, high strength, weather resistance and excellent geometric stability. PVCpvc transparent film is very resistant 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 it is not suitable for occasions in contact with aromatic hydrocarbons or chlorinated hydrocarbons.

????The melting temperature of PVC during processing is a very important process parameter. If this parameter is improper, it will cause the problem of material decomposition. The flow characteristics of PVC are quite poor, and its process range is very narrow. Especially PVC materials with large molecular weight are more difficult to process (this kind of material usually needs to add lubricant to improve the flow characteristics), so PVC materials with small molecular weight are usually used. The shrinkage rate of PVC is quite low, generally 0.2 ~ 0.6%.

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