PVC, the full name of PVC, is mainly composed of PVC, and other components are added to enhance its heat resistance, toughness and ductility. The top layer of this surface film is paint, the main component in the middle is PVC, and the bottom layer is adhesive. It is a kind of synthetic material which is deeply loved, quite popular and widely used in the world today.

193 1 year, Germany began to produce pvc by emulsion method, 194 1 year, and the United States began to produce PVC by suspension method, so PVC materials related products began to be widely used in production and life fields. With the continuous development of science and technology, the production and synthesis of PVC has been replaced by bulk synthesis, with higher efficiency and greatly reduced cost.

Extended data:

PVC material is nonflammable, with high strength, good weather resistance and excellent geometric stability. PVC has strong resistance to oxidants, reductants 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 contact with aromatic hydrocarbons and chlorinated hydrocarbons.

The melting temperature of PVC during processing is a very important technological parameter. If this parameter is not suitable, it will lead to the problem of material decomposition. PVC has poor fluidity and narrow processing range. Especially PVC materials with large molecular weight are more difficult to process, so PVC materials with small molecular weight are usually used. The shrinkage of PVC is quite low, generally 0.2~0.6%.

References:

Baidu encyclopedia -—PVC material