What is the material of pp and polypropylene copolymer?

It's polypropylene, and polypropylene is a polymer formed by addition polymerization of propylene. Compared with polypropylene (PP homopolymer), random polypropylene has improved optical properties, improved impact resistance, increased flexibility and reduced melting temperature, thus reducing the hot welding temperature; At the same time, it is basically the same as homopolymer in chemical stability, water vapor isolation performance and organ sensory performance.

Polypropylene is widely used in the production of clothing, blankets and other fiber products, medical equipment, automobiles, bicycles, parts, transportation pipelines, chemical containers and so on. It is also used for the packaging of food and medicine.

* * * Polypropylene is used in blow molding, injection molding, extrusion, film and sheet extrusion processing and other fields, and is commonly used in water pipes, food packaging materials, medical packaging materials and daily consumer goods.

Extended data

The difference between polypropylene and polypropylene

1, physical properties

Random PP*** polymer has better flexibility and lower rigidity than PP homopolymer. When the temperature drops to 32°F, they can still maintain moderate impact strength, while when the temperature drops to-4 F, their use is limited.

2. Chemical resistance

Random polypropylene * * * polymer pair acid. Strong resistance to alkali, alcohol, low-boiling hydrocarbon solvents and many organic chemicals. At room temperature, PP*** polymer is basically insoluble in most organic solvents. In addition, when exposed to soap, soap lye. In water-based reagents and alcohol, they are not damaged by environmental stress cracking like many other polymers.

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