PVC Polyvinyl Chloride
Aug 06, 2022
Polyvinyl chloride has poor stability to light and heat. It will decompose to produce hydrogen chloride at temperatures above 100°C or exposed to sunlight for a long time, and further autocatalytic decomposition will cause discoloration and decline in mechanical properties. In practical applications, stabilizers must be added to improve the For thermal and light stability, the choice of stabilizer is the key to its quality and safety.
The difference between soft and hard PVC is the presence or absence of plasticizers. Soft PVC contains plasticizers. It is generally used for floors, ceilings and the surface of leather, and has poor physical and mechanical properties.
Rigid polyvinyl chloride (PVC-U) has no plasticizer added and is commonly used to make pipes. The most widely used ones are drainage pipes and electrical casings. The pipes of PVC-U are generally not connected by hot melt, but are connected by adhesive.
The above introduces some common plastics used to make pipes. In addition to the above materials, there are other materials, but they are not widely used. The most important ones are the above materials.
