The main characteristics of plastic
1. Most plastics are light, chemically stable, and will not rust;
2. Good impact resistance;
3. It has good transparency and abrasion resistance;
4. Good insulation and low thermal conductivity;
5. General formability, good coloring, low processing cost;
6. Most plastics have poor heat resistance, high thermal expansion rate and easy to burn;
7. Poor dimensional stability and easy to deform;
8. Most plastics have poor low-temperature resistance, become brittle at low temperatures, and are easy to age;
9. Some plastics are easily soluble in solvents.
Plastics can be divided into two types: thermosetting and thermoplastic. The former cannot be reshaped and used, and the latter can be reproduced. Thermoplasticity has a relatively large physical elongation, generally between 50% and 500%. The force does not completely change linearly under different elongation rates.
The different properties of plastics determine its use in life and industry. With the advancement of technology, research on plastic modification has not stopped. It is hoped that in the near future, modified plastics can have a wider range of applications, and can even replace steel and other materials and no longer pollute the environment.