Polyvinyl chloride (PVC) ---- application industry

1. Pipes: PVC is mainly used for the production of pipes, transporting hot water and corrosive media. It can maintain sufficient strength when the temperature does not exceed 100 ℃, and can be used for a long time under high internal pressure. The weight of PVC is 1/6 of brass and 1/5 of steel, and has extremely low thermal conductivity. Therefore, pipes made of polyvinyl chloride (PVC) are light in weight, good in heat insulation, and do not need heat preservation.

2. PVC pipes can be used as hot sewage pipes in factories, electroplating solution pipes, thermochemical reagent delivery pipes, and wet chlorine gas delivery pipes in chlor-alkali plants.

3. Injection molded parts: Polyvinyl chloride (PVC) materials can be used to produce pipe fittings for water supply pipes, filter materials, dehydrators, etc., as well as electrical and electronic parts. Such as wire trough, protective layer of conductor, electric switch, protective cover of fuse, insulation material of cable, etc.

4. Calendered sheet: It can be used to manufacture chemical-resistant and corrosion-resistant chemical equipment, such as reactors, valves, electrolyzers, etc.

5. Composite materials: PVC composite materials composed of polyvinyl chloride (PVC) and some inorganic or organic fibers have good impact resistance and better heat resistance than other resin composite materials, and can be made into plates, pipes, corrugated Plates, profiles, etc.

6. PVC can be used in the modification of polyvinyl chloride fiber: the drying temperature of domestic polyvinyl chloride fiber should not exceed 60 ℃. Adding 30% PVC when spinning polyvinyl chloride can greatly improve the heat resistance of the product, and the shrinkage rate can be reduced by The original 50% dropped to less than 10%.

7. Foaming material: The heat resistance of PVC foaming material is better than that of PVC foaming material. The shrinkage rate at high temperature is quite small, and it can be used as thermal insulation material for hot water pipes and steam pipes. PVC with a chlorine content greater than 60% has a good retention of solvents. PVC can be foamed in a solvent that generates gas when heated, and uniform, microporous foaming gas can be obtained. The boiling point of PVC is 50-160 °C Hydrocarbons, ethers, aldehydes and other solvents are used as blowing agents.

8. Others: toys, auto parts, medical products, household daily necessities, etc. Blending polyvinyl chloride (PVC) with thermoplastic or thermosetting plastics can significantly improve the physical and mechanical properties of these materials, such as improving the heat resistance of products. Foreign countries have also prepared PVC with higher impact resistance and better transparency through the improvement of production technology. This transparent material can be used in automobiles, CDs, and audio-visual products, and has good economic benefits.