1, polyethylene: commonly used polyethylene can be divided into low-pressure polyethylene (HDPE), high-pressure polyethylene (LDPE), and linear high-pressure polyethylene (LLDPE). Among the three, HDPE has better thermal properties, electrical properties, and mechanical properties, while LDPE and LLDPE have better flexibility, impact properties, film-forming properties, etc..
LDPE and LLDPE are mainly used for packaging film, agricultural film, plastic modification, etc., while HDPE is more widely used, film, pipe, injection of daily necessities, and many other fields.
2, polypropylene: relatively speaking, polypropylene has more varieties, uses are also more complex, a wide range of fields, varieties are mainly homopolymer polypropylene (homopp), block copolymer polypropylene (copp), and random copolymer polypropylene (rapp), depending on the use, homopolymer is mainly used in the field of wire drawing, fiber, injection, BOPP film, copolymer polypropylene is mainly used in household appliances injection parts, the modified materials, daily injection products, pipes, etc., and random polypropylene is mainly used for transparent products, high-performance products, high-performance pipes, etc.
3. Polyvinyl chloride: Because of its low cost and self-retardant characteristics, it is widely used in the construction field, especially in sewer pipes, plastic doors, and windows, panels, artificial leather, etc. It is the most widely used.
4、Polystyrene: As a transparent raw material, it is widely used in cases where there is a demand for transparency, such as automobile lampshades, transparent parts for daily use, transparent cups and cans, etc.
5, ABS: is a widely used engineering plastic, with outstanding physical-mechanical and thermal properties, widely used in household appliances, panels, masks, combination parts, accessories, etc., especially household appliances, such as washing machines, air conditioners, refrigerators, electric fans, etc., the amount is very large, in addition to plastic modification, the use is also very wide
