What are the common plastic materials


  According to the scope of application, plastic r […]


According to the scope of application, plastic raw materials can also be divided into general plastics, engineering plastics, and special plastics;
Common plastics are: PP, PVC, PE, PS, etc .;
Common engineering plastics are: ABS, PC, PMMA, POM, PA6, PA66, PET, PBT, SAN, etc .;
Common types of special plastics are: PPS, PEI, etc .;
Engineering plastic particles are often modified by some general-purpose plastics; such as changing some of the internal molecular structure and adding other ingredients such as glass fiber;
Engineering plastics are industrial plastics that are used as industrial parts or shell materials. They have excellent strength, impact resistance, heat resistance, hardness, and aging resistance.
The definition of the Japanese industry is "It can be used as a high-performance plastic for structural and mechanical parts. Its heat resistance is above 100 ° C, and it is mainly used in industry.
Its performance includes:
a. Thermal properties: high glass transition temperature (Tg) and melting point (Tm), high heat distortion temperature (HDT), high long-term use temperature (UL-746B), large use temperature range, and small thermal expansion coefficient.
b. Mechanical properties: high strength, high mechanical modulus, low latent change, wear resistance, fatigue resistance.
c. Others: chemical resistance, excellent electrical resistance, flame resistance, weather resistance, good dimensional stability.

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