What are the characteristics of plastics?

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The characteristics of plastic are:

1, most plastics are light, chemically stable and will not rust;

2. Good impact resistance;

3. Good transparency and wear resistance;

4. Good insulation and low thermal conductivity;

5, good overall formability and coloring, and low processing cost;

6. Most plastics have poor heat resistance, high thermal expansion rate and are easy to burn;

7. Poor dimensional stability and easy deformation;

8. Most plastics have poor low temperature resistance, become brittle at low temperature and are easy to age;

9. Some plastics are soluble in solvents.

Advantages of plastics

Light specific gravity The specific gravity of plastics is generally between 0.9 and 2.3. Compared with metal, its surname is only half that of aluminum, one fifth that of steel and one eighth that of lead. If it is a porous foam, its specific gravity is much lighter.

The characteristics of light specific gravity are closely related to the performance and use of products. Plastic products made of light specific gravity are light and beautiful, which are not only convenient to use and carry, but also convenient to transport and keep, and are suitable for daily use of plastic products.

Good chemical stability. Generally speaking, plastics have excellent chemical stability and do not react with acids, salts, solvents, steam, waste gas, etc. It is suitable for manufacturing various industrial, agricultural and civil plastic products. For example, polyethylene films have been widely used as packaging bags for various foods and medicines. Polyvinyl chloride film has been widely used as packaging container for chemical fertilizer.