Polycarbonate (PC engineering plastic) is a linear carbonate polyester. The carbonic acid groups in the molecule are arranged alternately with other groups. These groups can be aromatic, aliphatic, or both. After processing, they become modified plastics. Bisphenol A-type PC is an amorphous engineering plastic with good toughness, transparency and heat resistance. The carbonate group gives toughness and durability, and the bisphenol A group gives high heat resistance. Some major applications of PC require at least these two kinds of performance at the same time. Polycarbonate (PC engineering plastic) is a linear carbonate polyester. The carbonic acid groups in the molecule are arranged alternately with other groups. These groups can be aromatic, aliphatic, or both. After processing, they become modified plastics. Bisphenol Polycarbonate A-type PC is an amorphous engineering plastic with good toughness, transparency and heat resistance. The carbonate group gives toughness and durability, and the bisphenol A group gives high heat resistance. Some major applications of PC require at least these two performances at the same time PC Or ABS High impact strength, good dimensional stability, colorless and transparent, good coloring, good electrical insulation, corrosion resistance and wear resistance, but poor self-lubrication, stress cracking tendency, high temperature and easy hydrolysis, poor solubility with other resins.
Polycarbonate plastic, a plastic with polycarbonate as the main component. Polycarbonate is amorphous polymer that turns into a transparent glass after melting and cooling, with excellent optical and mechanical properties. It has a high melting point, can also resist low temperatures and low water absorption. It has good impact resistance, insulation and aging resistance, and can also tolerate inorganic and organic dilute acids. Signage, instrument shell, furniture, car lights, electrical parts, instrument dashboards, etc. can be made. The dosage of polycarbonate as a disc substrate has increased significantly.
Polycarbonate is a transparent, white or slightly yellow polymer, amorphous, tasteless and non-toxic; the product is rigid, impact-resistant, has good toughness and low water absorption rate; has excellent mechanical properties. Polyamide However, the fatigue resistance strength is low, and it is easy to crack; the heat resistance and cold resistance are good, the application temperature range is -60~120℃, the thermal deformation temperature is about 135℃, the temperature is 220~230℃ in the molten state, and the decomposition temperature is >310℃; the molten body has high viscosity, poor fluidity, and the molding and processing is difficult. , but good coloring; it has good electrical insulation, non-flammable, and whitening; resistant to acids, salts and oils, fatty hydrocarbons and alcohols, not resistant to chlorocarbons, alkalis, amines, ketones and other media, and is easily soluble in chlorohydrocarbon solvents such as dichloromethane and dichloroethane. 
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