Flame-retardant and antistatic chlorinated polyethylene composite material applied to gas drainage pipeline and preparation method thereof

Abstract

The invention discloses a flame-retardant antistatic chlorinated polyethylene composite material for a gas pumping pipeline and a preparation method of the flame-retardant antistatic chlorinated polyethylene composite material. The composite material is prepared from the following raw materials in parts by weight: 50 to 100 parts of chlorinated polyethylene, 10 to 50 parts of polyvinyl chloride, 10 to 30 parts of plasticizer, 3 to 6 parts of stabilizer, 3 to 6 parts of lubricating agent, 18 to 30 parts of composite antistatic agent and 10 to 30 parts of filler. The chlorinated polyethylene isselected as a matrix, and by adding the composite antistatic agent, the surface resistance of the composite material cannot be greater than 10<4> ohm. The composite material of the invention can be used for producing a mineral gas pipe material, has the advantages of flame-retardant performance, electrostatic resistance, low temperature resistance, long service life and low cost, not only has theflame-retardant antistatic performance, but also has good low temperature resistance, the low-temperature brittleness can reach -33 DEG C, and the flame-retardant antistatic chlorinated polyethylene composite material can be normally used in northern area in winter.

Description

technical field [0001] The invention belongs to the technical field of plastic modification, and in particular relates to a flame-retardant and antistatic chlorinated polyethylene composite material applied to gas drainage pipelines and a preparation method thereof. Background technique [0002] In order to ensure the safe production of coal mines, the most commonly used measure in coal mine production is to use special pipelines to drain the gas to ensure the safety of mine operations. In mines, the current gas drainage pipelines have basically been converted to plastic pipes. Plastic pipes are mainly divided into PVC (polyvinyl chloride) pipes and PE (polyethylene) pipes. [0003] PVC composite pipe has the advantages of flame retardant and antistatic, light weight, good toughness, and good corrosion resistance; the main disadvantage is that it has high hardness and cannot be coiled. [0004] Polyethylene pipes are widely used in mines due to their light weight, corrosio...

AI Technical Summary

Problems solved by technology

However, the main disadvantages of ordinary polyethylene pipes are poor antistatic and flame retardancy. PE is insulating, and the surface resistivity is too high. The static electricity accumulated on the surface of the pipe is very harmful to the mine, and it is easy to detonate gas.

As far as polyethylene itself is concerned, the oxygen index is 17.0-17.5, which is extremely flammable and easy to cause major accidents. In order to increase the flame retardancy, it is necessary to add a large amount of flame retardants. Flame retardant, the flame retardant will produce a little harmful gas during the extrusion process, which will affect the health of workers, and the flame retardant performance is difficult to improve

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