Coal mine underground polyethylene composite pipe
A polyethylene composite pipe, composite pipe technology, applied in the direction of pipes, rigid pipes, pipeline protection, etc., can solve the problems of low surface strength of pipelines, affecting normal production of coal mines, insufficient static pressure strength, etc., to save anti-corrosion and descaling high cost, good resistance to rapid cracking, and the effect of avoiding fracture accidents
Active Publication Date: 2015-10-21
CHENGDU SANHUAN METAL PROD
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Problems solved by technology
(1) The existing pipes used in underground coal mines are not outstanding, the material is fragile, and the static pressure strength is insufficient; (2) The existing pipes have low surface strength, poor wear resistance, short service life, and need to be replaced continuously during use , affecting the normal production of coal mines
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[0016] The following will be combined with Figure 1-2 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] Such as Figure 1-2 As shown, the present invention provides a polyethylene composite pipe for underground coal mines. The composite pipe is divided into three layers, the middle part is a flame-retardant layer 101, and the inner and outer surfaces are antistatic and flame-retardant composite layers 102; the three are integrated structure.
[0018] Wherein; the flame retardant layer 101 is made of the following materials (mass percentage): ...
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Abstract
The invention discloses a polyethylene composite tube for an underground coal mine. The polyethylene composite tube is characterized in that the composite tube is divided into three layers, the middle portion of the composite tube is an inflaming retarding layer, the inner surface and the outer surface of the inflaming retarding layer are an antistatic layer and an inflaming retarding composite layer respectively, and the inflaming retarding layer, the antistatic layer and the inflaming retarding composite layer form an integral structure. The inflaming retarding layer is prepared, by mass percent, by 80-85% polyethylene resin and 15-20% environment-friendly inflaming retarding components. The inner surface and the outer surface of the inflaming retarding layer are the antistatic layer and the inflaming retarding composite layer, wherein the antistatic layer and the inflaming retarding composite layer are prepared, by mass percent, by 7-10% superconducting antistatic carbon black, 10-15% environment-friendly fire retardant and 78-83% polyethylene resin. Antistatic and flame retardant properties accord with national standards, so the polyethylene composite tube is applied to inflammable and explosive specific places in a pit. The polyethylene composite tube serves as a dedicated tube stock, so inflaming retarding and antistatic characteristics are particularly highlighted. The polyethylene composite tube is light in weight, convenient to install, good in anti-aging and rapid cracking resistance, corrosion-resistant, and free of scaling at the same time.
Description
technical field [0001] The invention relates to a plastic composite pipe, in particular to a polyethylene composite pipe for underground coal mines. Background technique [0002] In recent years, with the continuous development of my country's economy, polyethylene composite pipes for underground coal mines are pipes used for water supply and drainage, ventilation, spraying, and gas extraction in coal mines. Such pipes must have antistatic, flame-retardant and other requirements. (1) The existing pipes used in underground coal mines are not outstanding, the material is fragile, and the static pressure strength is insufficient; (2) The existing pipes have low surface strength, poor wear resistance, short service life, and need to be replaced continuously during use , affecting the normal production of coal mines. Contents of the invention [0003] The object of the present invention is to provide a polyethylene composite pipe for underground coal mines, which has high elec...
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IPC IPC(8): F16L9/12F16L57/04C08L23/06C08K3/04
Inventor 李正华蓝元虎张常海王梦晓
Owner CHENGDU SANHUAN METAL PROD
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