h. Polyethylene is the simplest structural polymer organic compound. It is the most widely used polymer material in the world today. It is polymerized from ethylene. It is divided into high-density polyethylene, medium-density polyethylene and low-density polyethylene according to its density. . Low-density polyethylene is softer and is mostly polymerized under high pressure.
High-density polyethylene has the characteristics of rigidity, hardness and mechanical strength, and is mostly used in low-pressure polymerization.
High-density polyethylene can be used as containers, pipes, and high-frequency electrical insulation materials for radar and television.
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