The difference between polyvinyl chloride (PVC) and TPE material

1. Structural differences: tpe: hydrocarbon polymer; pvc: hydrocarbon polymer containing chlorinated hydrocarbons.

2. The difference in specific gravity: tpe: the specific gravity is 0.84-1.4, which is lighter; pvc: the specific gravity is generally between 1.2-1.4.

3. The difference in hardness: TPE hardness range: 0A-60D wide hardness range; soft PVC material hardness is 50A-90A.

4. Differences in mechanical properties: tpe: excellent tensile properties, tensile strength up to 12 MPa, elongation at break up to 10 times, high mechanical strength; pvc: high mechanical strength.

5. Differences in temperature resistance: TPE can withstand temperatures above 70°C for a long time, and its maximum operating temperature is 100°C. It can still maintain a good shape at a low temperature of -40°C; PVC material can withstand low temperatures -15°C-60°C, light and heat Poor stability, the softening point of the material can be lowered to 80°C in an environment above 100°C or in a light environment, and decomposes in a high temperature environment of 130°C, and precipitates hydrogen chloride, which is an irritating gas.

6. Differences in chemical resistance: TPE is corrosion-resistant, ozone-resistant, ozone aging (38°C), performance drops below 10% in 100 hours, resistant to water, acid, alkali, alcohol and other solvents, and can be soaked in solvent or oil for a short period of time; PVC has high chemical resistance and corrosion resistance, but it is not resistant to ozone. It is a strong acid, such as concentrated sulfuric acid and concentrated nitric acid, and cannot be in contact with aromatic hydrocarbons and chlorinated hydrocarbon substances.

7. The difference in burning: TPE: The material does not contain halogen, the burning smoke is low and non-toxic, and emits fragrance when burning; PVC releases a large amount of smoke and irritating gas.