All the PE plastic knowledge you want to know is here!

Mar 25, 2022

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Plastic is often used in our daily life. From plastic bags, milk bottles, beverage bottles, lunch boxes and plastic wrap, to agricultural film, furniture, electrical appliances, 3D printing, and even rockets and missiles, plastics are emerging.

Plastic is an important branch of organic polymer materials, with many varieties, large output and wide applications. For a wide variety of plastics, they can be classified as follows:

1. According to the behavior when heated, plastics can be divided into thermoplastic and thermosetting science;

2. According to the reaction type of resin synthesis in plastics, resins can be divided into polymeric plastics and polycondensation plastics;

3. According to the ordered state of resin macromolecules, plastics can be divided into amorphous plastics and crystalline plastics;

4. According to the application scope of performance phase, plastics can be divided into general plastics, engineering plastics and special plastics.

Among them, general plastics are the most widely used in our daily life. General purpose plastics refer to plastics with large production volume, wide supply of goods, low price and suitable for a large number of applications. General purpose plastics have good molding processability, and products with various uses can be formed by various processes. General purpose plastics include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile / butadiene / styrene (ABS).

This time, I will mainly talk about the main properties and uses of polyethylene (PE). Polyethylene (PE) has excellent processability and service performance. It is the most widely used variety in synthetic resin, and its production capacity ranks first among all plastic varieties for a long time. Polyethylene resin mainly includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE) and high density polyethylene (HDPE).

Polyethylene is widely used in China. Film is its largest user, consuming about 77% of low-density polyethylene and 18% of high-density polyethylene. In addition, injection molded products, wires and cables and hollow products account for a large proportion in its consumption structure. Among the five general resins, the consumption of PE ranks first. Polyethylene can be blow molded to make all kinds of bottles, cans, industrial tanks, barrels and other containers; Injection molding manufacturing all kinds of pots, barrels, baskets, baskets and other daily containers, daily sundries and furniture; Extrusion molding manufactures all kinds of pipes, binding belts, fibers, monofilaments, etc. In addition, it can also be used to manufacture coating materials and synthetic paper for wires and cables. In many applications, the two main consumption fields of polyethylene are pipe and film. With the development of urban construction, agricultural film and various food, textile and industrial packaging industries, the development of these two fields is also more and more broad.