The main materials for engineering plastic processing include the following:
Polyamide (PA): Also known as nylon, it is a polymer with amide groups (-CO-NH-) in the molecule. It has excellent mechanical properties, heat resistance, wear resistance, chemical resistance, self-lubrication, low friction coefficient and flame retardancy. There are many varieties of nylon, including PA6, PA66, PA11, PA12, PA46, PA610, PA612, PA1010 and special nylon.
Polycarbonate (PC): Contains carbonate groups in the molecular chain and has strong thermoplastic resin properties. It is usually made from bisphenol A and diphenyl carbonate through ester exchange and polycondensation reactions. PC has good optical properties, high toughness, flame retardancy, wear resistance and oxidation resistance. It is the fastest growing general engineering plastic among the five major engineering plastics.
Polyoxymethylene (POM): A thermoplastic polymer with high density and high crystallinity, excellent mechanical properties, electrical insulation and solvent resistance. POM is commonly used in electronics, machinery, building materials, automobiles, agriculture and other fields, and has widely replaced some traditional metal markets.
Polyphenylene ether (PPO): The chemical name is poly-2,6-dimethyl-1,4-phenylene ether, which has high strength and good dimensional stability, electrical insulation and water and wear resistance. Modified polyphenylene ether (MPPO) is made by blending PPO with high impact polystyrene (HIPS), which has better heat resistance and flame retardancy.
Polyethylene terephthalate (PET): A thermoplastic polyester with good mechanical properties and chemical corrosion resistance, widely used in packaging, textiles and electronics.
Modified polyphenylene ether (MPPO): A modified version of PPO, made by blending with high impact polystyrene (HIPS), with better heat resistance and flame retardancy.
Aromatic polyamide: A high-performance fiber with high strength and excellent wear resistance, commonly used in high-performance textiles and composites.
Liquid crystal polymer: A polymer material with a liquid crystal structure, with excellent mechanical properties and thermal stability, commonly used in high-end electronic devices and automotive parts.
These engineering plastics are widely used in various fields due to their excellent properties, including automobiles, aviation, home appliances, medical, sports, electronics and construction. Their high heat resistance, high strength, good mechanical properties and chemical corrosion resistance make these materials perform well in various harsh environments.