The 68 sentences of modified plastics are the most comprehensive in history.

Modified plastic refers to the addition of suitable modifiers to the matrix of general-purpose plastics and engineering plastics. It is modified by filling, blending and strengthening to improve the flame retardancy, impact resistance, strength and stretchability of plastics. , toughness, etc. Then general-purpose plastics are people's habits of high-yield, low-priced, wide-ranging, and wide-ranging plastics. Important general-purpose plastics are PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride), PS (polystyrene), PMMA (polymethyl methacrylate, commonly known as plexiglass or acrylic). Engineering plastics: plastics that can be used as engineering materials or in place of metal to make machine parts. However, engineering plastics have excellent comprehensive properties, high rigidity, small creep, high mechanical strength, good heat resistance, good electrical insulation, long-term use in harsh chemical and physical environments, and can replace metals as engineering structural materials. Use, but its price is more expensive. The five engineering plastics include PA (polyamide, commonly known as nylon), PC (polycarbonate), POM (polyoxymethylene), PPO (polyphenylene ether), PET / PBT (polyethylene terephthalate / polybutylene terephthalate, Collectively referred to as polyester).