The identification method of commonly used plastic hanger hook raw materials

The identification method of commonly used plastic hanger hook raw materials:

Plastic is a commonly used chemical raw material, which is a polymer organic material polymerized by one or several monomers under certain reaction conditions. occupies an important part.

1. Conventional varieties and classification of plastic hook raw materials

In daily life, most of the plastics that we can directly contact or perceive are conventional general-purpose plastics, mainly including five categories: PE, PP, ABS, PVC, PS. These five categories of plastics account for the vast majority of plastic raw materials used. , the rest can basically be classified into special plastic varieties, such as: PPS, PPO, PA, PC, POM, etc. They are used in a lot of daily life products and can be divided into thermoplastics and thermosetting plastics. Under normal circumstances, thermoplastic products can be recycled, while thermosetting plastics cannot. According to the optical properties of plastics, they can be divided into transparent, translucent and opaque raw materials, such as PS, PMMA, AS, PC, etc. belong to transparent plastics , while most other plastics are opaque. There are many ways to classify plastics, and I will not introduce them one by one here.

2. Properties and uses of commonly used plastic varieties

 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, and film-forming properties. LDPE and LLDPE are mainly used in packaging films, agricultural films, plastic modification, etc., while HDPE is widely used in films, pipes, injection daily necessities and other fields.

 2. Polypropylene: Relatively speaking, polypropylene has more varieties, more complex uses, and many fields. The varieties mainly include homopolymer polypropylene (homopp), block copolymer polypropylene (copp) and random copolymer polypropylene ( rapp), according to different uses, homopolymerization is mainly used in drawing, fiber, injection, BOPP film and other fields, and copolymer polypropylene is mainly used in household appliance injection parts, modified raw materials, daily injection products, pipes, etc., random polymerization Propylene is mainly used in transparent products, high-performance products, high-performance pipes, etc.

  3. Polyvinyl chloride: Due to its low cost and self-flammability, it is widely used in the construction field, especially for sewer pipes, plastic steel doors and windows, plates, artificial leather, etc.

 4. Polystyrene: As a transparent raw material, it is widely used when there is a need for transparency, such as scarves and clothing in supermarkets.

 5. ABS: It is a widely used engineering plastic with outstanding physical, mechanical and thermal properties, and is widely used in supermarket display boxes, paper display stands, shelves, clothing items, etc.