PVC refers to polyvinyl chloride, the English abbreviation for PVC (Polyvinyl chloride).
It is vinyl chloride monomer (vinyl chloride monomer, abbreviated as VCM) in peroxide, azo compounds and other initiators; or under the action of light, heat under the mechanism of free radical polymerization reaction polymerization.
On October 27, 2017, the World Health Organization's International Agency for Research on Cancer published a preliminary collation of the list of carcinogens for reference, polyvinyl chloride in the list of category 3 carcinogens.
Expanded Information
Main Uses
1, PVC profiles
Profiles, profiles is the largest area of PVC consumption in China, accounting for about 25% of the total consumption of PVC, mainly used for the production of windows and doors and energy-saving materials, and its application is still a relatively significant growth.
2, PVC pipe
In many PVC products, PVC pipe is its second largest consumption area, accounting for about 20% of its consumption. In our country, PVC pipe is developed earlier than PE pipe and PP pipe, with many varieties, excellent performance, wide range of use, and occupies an important position in the market.
3, polyvinyl chloride film
PVC film field of PVC consumption ranks third, accounting for about 10% or so. PVC and additives mixed, plasticized, using three-roller or four-roller calender to make the required thickness of transparent or coloring film, with this method of processing film, become calendered film.
Can also be cut, heat-laminated processing bags, raincoats, tablecloths, curtains, inflatable toys and so on. Wide transparent film can be used for greenhouses, plastic greenhouses and mulch. The bi-directional stretching of the film, the characteristics of heat shrinkage, can be used for shrink-wrapping.
4, PVC hard materials and plates
PVC in the addition of stabilizers, lubricants and fillers, after mixing, with the extruder can be extruded in various calibers of hard pipe, profiled pipe, corrugated pipe, used as downpipes, drinking water pipes, wire casing or staircase handrails.
The calendered sheets are overlapped and hot pressed to make various thicknesses of hard sheets. The sheets can be cut into desired shapes, and then welded into various chemical-resistant storage tanks, air ducts and containers with hot air using PVC welding rods.
5, PVC general soft goods
The use of extruders can be extruded into hoses, cables, wires, etc.; the use of injection molding machines with a variety of molds, can be made into plastic sandals, soles, slippers, toys, car parts, etc..
Baidu Encyclopedia-PVC (Polyvinyl Chloride)