Permanent colored antistatic flame retardant polyolefin steel wire composite pipe, its preparation method and mold

Abstract

The invention relates to a permanent colorful antistatic and flame-retardant polyolefin steel wire composite pipe material, a preparation method thereof and a die. The composite pipe material sequentially comprises a core layer, a steel wire mesh framework composite layer, a coextrusion inner layer and a coextrusion outer layer from inside to outside, and wherein the coextrusion outer layer is a colorful antistatic flame-retardant layer. The coextrusion outer layer of the composite pipe material prepared by coextrusion of colorful polyolefin materials is colorful, the coextrusion outer layer of the polyolefin composite pipe material can be designed with different colors according to the requirements of mine construction, the color of the pipe material is bright, the identification degree is high, and thus different fluid media are distinguished.

Description

technical field [0001] The invention belongs to the technical field of composite pipe preparation, and relates to a permanent colored antistatic flame-resistant polyolefin steel wire composite pipe, a preparation method and a mold. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Pipelines for underground coal mines are an extremely important part in the history of pipeline development. They are mainly used for various fluid transportation pipelines in underground coal mines that require antistatic properties on the surface of the pipes and flame retardant properties of the pipes. Due to the special use environment of coal mines, the electrostatic discharge ability and fla...

AI Technical Summary

Problems solved by technology

[0005] Since the polyolefin pipes used in coal mines are divided into water supply pipes, drainage pipes, positive pressure air pipes, spray pipes, and gas drainage pipes according to their purposes, the pipes for different conveying media are all laid overhead on the roadway wall, and all of them are black. When there is an abnormality in the pipeline, when it is necessary to open and close the pipeline, it is impossible to quickly identify the medium conveyed in each pipeline and its specific use, which affects the rapid handling of abnormal problems

At present, in order to identify the type of transport medium in the pipeline, the mine usually adopts the following methods: 1. Put up a sign, which is easy to fall off and has low recognition; 2. Rely on the color marking line of the pipe body itself, but the color marking line does not have Flame retardant and antistatic properties, and the color code line is thin, the logo is not clear, and if the color line is completely aligned during installation, the connection efficiency will be greatly reduced; 3. Production of painted color antistatic agents and short-acting antistatic flame retardant materials 4. The use of ordinary colored pipes cannot meet the requirements of antistatic and flame retardant, which is extremely risky for underground use

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