Introduction to PVC

1. what is PVC?

Polyvinyl chloride, abbreviated as PVC (Polyvinyl chloride), is a high polymer made of vinyl chloride monomer by homopolymerization or copolymerization with other monomers. PVC is a white powder with an amorphous structure, the relative density is about 1.4, the glass transition temperature is 77-90 °C, and a large amount of decomposition begins at about 140 °C to produce hydrogen chloride that is harmful to the human body, and the physical and mechanical properties also decline rapidly. In the actual production process of polyvinyl chloride, according to different products, some auxiliary materials, such as stabilizers, plasticizers, lubricants, fillers and colorants, will be appropriately added.

2. Main application of PVC

2.1 PVC profiles

Profiles are the largest areas of PVC consumption in China, accounting for about 25% of the total PVC consumption. They are mainly used to make doors and windows and energy-saving materials. At present, their application volume is still increasing significantly across the country.

2.2 PVC Pipe

Pipe is the second largest consumption area of PVC, accounting for about 20% of its consumption. In China, PVC (PE) pipes and polypropylene (PP) pipes were developed early, it has many varieties, excellent performance and wide application range, occupying an important position in the market.

2.3 PVC film

PVC film is the third largest consumption area of PVC, accounting for about 10% of its consumption. Using a calender, PVC can be made into a transparent or colored film of a specified thickness. The film produced by this method is called a calendered film.

The granular raw material of PVC can also be blown into a film by a blow molding machine, and the film produced by this method is called a blown film. The film is very versatile and can be processed into packaging bags, tablecloths, curtains, etc. Wide transparent film can be used to build greenhouses and plastic sheds, or as mulch.