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.
Extended data:
Application of plastics:
1. industry: plastics are widely used in electrical and electronic industries to manufacture insulation materials and packaging materials;
In the mechanical industry, gears are made of plastic. Bearing bush and many parts replace metal;
3. Anticorrosive materials such as chemical plastic containers;
4. The building industry is used as doors and windows, stair handrails, floor tiles, ceilings, insulation boards, downpipes, decorative boards and sanitary wares.
5. National defense industry: Plastic is an important material in the fields of conventional weapons, airplanes, ships, rockets, missiles and artificial satellites.
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