PE pipe production method

Abstract

The invention discloses a PE pipe production method. The method comprises A, putting PE resin powder, color master batches, a clay nanocomposite material, a flame retardant, nanometer calcium carbonate, a dispersant, an antistatic agent, a coupling agent, a low temperature-resistant plasticizer and an antioxidant into a drying mixer together, and carrying out drying stirring to obtain a raw material, B, adding the raw material into an extractor and carrying out melting extrusion granulation, and C, putting the granulated material into an extruder, carrying out melting and extruding the material through a die outlet. The product is prepared from the PE resin powder, color master batches, clay nanocomposite, flame retardant, nanometer calcium carbonate, dispersant, antistatic agent, coupling agent, low temperature-resistant plasticizer and antioxidant through mixing. The PE pipe has good static resistance, corrosion resistance, flame resistance, flexibility, low temperature resistance, high temperature resistance, good fast crack growth fracture toughness and good pressure resistance and guarantees the safety of the PE pipe in any environments.

Description

technical field [0001] The invention relates to the technical field of PE pipe production, in particular to a PE pipe production process. Background technique [0002] PE is polyethylene. Generally, the application range of PE pipes for water supply pipes is below 40°C, and cannot be used for hot water pipelines. PE pipes are a kind of high crystallinity, non-polar thermoplastic resin, and the appearance of original HDPE It is milky white and translucent to a certain extent in the thin section. PE has excellent resistance to most domestic and industrial chemicals. Certain types of chemicals will cause chemical corrosion, such as corrosive oxidizers (concentrated nitric acid), Aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride) my country's plastic pipes are developing rapidly and their quality is constantly improving. At present, polyvinyl chloride (PVC-U) pipes, polyethylene (PE) pipes and Polypropylene (PP-R) pipe is the main plastic pipe indus...

AI Technical Summary

Problems solved by technology

PE is divided into several different classes mainly based on its density and branching. Its mechanical properties depend on significant variables such as the degree and type of branching, crystal structure and molecular weight. The most important polyethylene grades are HDPE, HDPE, Linear low-density polyethylene and low-density polyethylene (LDPE), with reliable connection, good low-temperature impact resistance, good stress crack resistance, good chemical corrosion resistance, aging resistance, long service life, good wear resistance, flexible Good performance, easy handling and a variety of new construction methods. Due to these advantages of plastic pipes, PE pipes are used instead of steel pipes in the coal industry or many other industries. However, PE pipes are prone to static electricity, and the accumulation of static electricity may lead to static electricity. Spark discharge may become the ignition source of underground coal dust or gas explosion. At the same time, the existing PE pipes have the disadvantages of flammability, low pressure resistance and impact resistance.

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