Linear low-density polyethylene

Molding method and application: Linear low-density polyethylene resin is generally used for injection molding of plastic products using injection molding machines. Modified linear low-density polyethylene can be molded into plastic products using methods such as blow molding, injection molding, rolling molding, and extrusion. By using an extruder, pipes can be extruded, wires and cables can be covered with sheaths, and various thicknesses of thin films and hollow products can be extruded and blown. Using injection molding machines to inject various industrial accessories, airtight container covers, automotive components, and industrial containers. The rotary molding method is used to process large containers such as pesticide and chemical containers, as well as tank trucks. The casting method can also be used to form casting films, which are used for composite, printing, and construction films.

The density of medium density polyethylene is 0.926~0.940g/cm, and its molecular structure is between low-density polyethylene and high-density polyethylene. Medium density polyethylene can be produced using several methods, such as mixing high-density polyethylene and low-density polyethylene in a certain proportion; By using the production process of high-density polyethylene and adjusting the amount of co monomer 1-butene added to ensure that the density of the polymerized product is within the medium density range, medium density polyethylene can be obtained. The abbreviation for medium density polyethylene is MDPE.

The crystallinity of medium density polyethylene is 70%~75%, and its performance is the same as that of low-density polyethylene and high-density polyethylene. However, it has excellent stress cracking resistance, rigidity, and heat resistance, which are characteristics that LDPE and HDPE do not possess. The performance parameter values of medium density polyethylene are listed in Table 2-1 for reference during application. There is currently no unified national standard for the quality of medium density polyethylene resin. The product quality standards of several domestic medium density polyethylene resin production plants. Rotational molding with good rotational molding properties.

Processing method and application performance, high impact resistance, suitable for making various types of toys, storage tanks, trash cans, good processing performance, suitable for making various storage tanks, and can also be used as mixing materials for public engineering pipelines.

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