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Fire retardant, antistatic plastic pipe in high ring rigidity

A flame retardant antistatic, plastic pipe technology, applied in the direction of rigid pipes, pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of flammability, cost increase, low pressure resistance, etc., to reduce production costs and improve ring stiffness , the effect of enhancing the ring stiffness

Inactive Publication Date: 2006-12-06
李寿山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plastic pipes have the advantages of good corrosion resistance, low cost, light weight, long life, and convenient installation. However, plastic pipes also have disadvantages such as easy to generate static electricity, flammable, low pressure resistance, and low strength, especially the yield strength and environmental protection. The low rigidity greatly limits its application. Some try to increase the strength by increasing the thickness of the pipe wall. On the one hand, the strength improvement is limited. On the other hand, it uses more materials and greatly increases the cost. Method
For large-diameter plastic pipes, which are made of small-diameter rectangular pipes, they have been improved to a certain extent in terms of strength, flame retardancy and antistatic properties, but they still cannot meet people's use requirements. How to improve the strength of polyethylene plastic pipes , to improve its performance is a problem that people have been working hard to solve

Method used

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  • Fire retardant, antistatic plastic pipe in high ring rigidity

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The proportion by weight of the small-diameter rectangular tube is composed of: 9% decabromodiphenyl ether, 5% antimony trioxide, 15% short glass fibers with a length of 0.1-0.8mm and the balance of polyethylene plastic;

[0020] The weight percentages of the flame retardant and antistatic material layer are: 9% of decabromodiphenyl ether, 5% of antimony trioxide, 8% of conductive carbon black antistatic agent, 15% of short glass fibers with a length of 0.1-0.8mm and Balance polyethylene plastic.

Embodiment 2

[0022] The proportion by weight of the small-diameter rectangular tube is composed of: 10% of decabromodiphenyl ether, 4% of antimony trioxide, 20% of short glass fibers with a length of 0.1-5 mm and the balance of polyethylene plastic;

[0023] The weight percent of the ingredients of the flame retardant and antistatic material layer is: 10% of decabromodiphenyl ether, 4% of antimony trioxide, 10% of conductive carbon black antistatic agent, 20% of short glass fibers with a length of 0.1 to 5mm and the rest amount of polyethylene plastic.

Embodiment 3

[0025] The weight percentage of ingredients for the small diameter rectangular tube is: 8% of decabromodiphenyl ether, 5% of antimony trioxide, 30% of short glass fibers with a length of 0.1-20mm and the balance of polyethylene plastic;

[0026] The weight percentage of the ingredients of the flame retardant and antistatic material layer is: 7% of decabromodiphenyl ether, 6% of antimony trioxide, 15% of conductive carbon black antistatic agent, 30% of short glass fibers with a length of 0.1-20mm and the rest amount of polyethylene plastic.

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Abstract

The present invention relates to a high ring rigidity fire-resisting antistatic plastic pipe. It is made up by winding small-calibre rectangular tube; between every two layers of winded small-calibre rectangular tubes a fire-resisting antistatic material layer is added. The raw material composition of said small caliber rectangular tube includes (by wt %) 8-18% of fire-resisting agent, 10.5-70% of short glass fibre and the rest is plastics. Said plastic pipe possesses high hoop rigidity, and its yield strength can be up to 80MPa.

Description

technical field [0001] The invention relates to an improved flame-retardant and antistatic plastic pipe with high ring rigidity, which is mainly used as a drainage pipe and a mine pipe. Background technique [0002] Plastic pipes instead of metal pipes have been promoted in many fields, especially in some poor environments, metal pipes have the fatal defect of easy corrosion, such as drainage pipes and mine pipes are basically replaced by plastic pipes. Plastic pipes have the advantages of good corrosion resistance, low cost, light weight, long life, and convenient installation. However, plastic pipes also have disadvantages such as easy to generate static electricity, flammable, low pressure resistance, and low strength, especially the yield strength and environmental protection. The low rigidity greatly limits its application. Some try to increase the strength by increasing the thickness of the pipe wall. On the one hand, the strength improvement is limited. On the other h...

Claims

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Application Information

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IPC IPC(8): F16L9/12F16L9/14F16L9/16
Inventor 李研李寿山
Owner 李寿山