What is engineering plastics?

Engineering plastics are plastics that can be used as structural materials. It has no obvious boundary with general-purpose plastics. Its main varieties are polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, thermoplastic polyester, thermoplastic polyurethane, polysulfone, polyarylsulfone (see polysulfone), polyphenylene. Sulfide and other aromatic heterocyclic polymers. Fluororesins, ultra high molecular weight polyethylene and all thermoplastic reinforced plastics, as well as other polymer blends and modified materials based thereon, have also been included.

Five engineering plastics

Polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, thermoplastic polyester.

Engineering plastic properties

1 density is small, generally 1/4 of steel, 1/9 to 1/5 of copper, 1/2 of aluminum. This has special significance for comprehensively reducing the weight of vehicles and aircraft.

2 The ratio of the tensile strength to the quality of the engineering plastics with high strength and glass fiber reinforced plastics is 1700-4000, while the steel is only about 1600.

3 good chemical stability, good corrosion resistance to acid, alkali and general organic solvents.

4 Excellent electrical insulation.

5 wear-resistant, self-lubricating, can reduce the friction coefficient.

6 high heat resistance and dimensional stability.

7 Excellent resistance to impact and fatigue. Common engineering plastics

Common engineering plastics

Special engineering plastics