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Mine polyethylene tube

A polyethylene pipe, high-density polyethylene technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of maximum pressure limit, poor low temperature resistance, no flame retardancy, etc., to achieve resistance Excellent flammability, good aging resistance, good wear resistance

Active Publication Date: 2013-01-02
ZHEJIANG XINDA PLASTIC PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the PE material itself, PE pipes also have certain weaknesses, such as low strength, bumping into rocks, metal collision and extrusion, easy to cause pits, until perforation; no flame retardancy; poor low temperature performance

Method used

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  • Mine polyethylene tube

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] The mine-use polyethylene pipe of the present invention comprises the following components in parts by weight: 55 parts of high-density polyethylene, 10 parts of ethylene-propylene rubber, 10 parts of polypropylene, 10 parts of low-density polyethylene, 3 parts of lubricant, and 5 parts of compatibilizer, 2.0 parts of vulcanizing agent, 5 parts of flame retardant, 20 parts of carbon black.

[0033] Wherein, the melt index of the high-density polyethylene resin is 10g / 10min, and the density is 0.958g / cm 3 , an HDPE resin containing the following a) and b) components: a) a low molecular weight ethylene copolymer having a weight average molecular weight of 5,000 amu and a short chain branching index of 4.5; b) a weight average molecular weight of 60,000 amu and A high molecular weight ethylene copolymer with a short chain branching index of 1.5.

[0034] The ethylene-propylene rubber is EPDM rubber; the vulcanizing agent is dimorpholine disulfide;

[0035] The polypropyl...

Embodiment 2

[0047] The mine-use polyethylene pipe of the present invention comprises the following components by weight: the mine-use polyethylene pipe comprises the following components by weight: 75 parts of high-density polyethylene, 5 parts of ethylene-propylene rubber, polyethylene 8 parts of propylene, 5 parts of low density polyethylene, 8 parts of lubricant, 2 parts of compatibilizer, 1.0 part of vulcanizing agent, 8 parts of flame retardant, 15 parts of carbon black, 2 parts.

[0048] Wherein, the melt index of the high-density polyethylene resin is 5g / 10min, and the density is 0.960g / cm 3 , an HDPE resin containing the following a) and b) components: a) a low molecular weight ethylene copolymer having a weight average molecular weight of 50,000 amu and a short chain branching index of 3.5; b) having a weight average molecular weight of 800,000 amu and A high molecular weight ethylene copolymer with a short chain branching index of 2.5.

[0049] The ethylene-propylene rubber is ...

Embodiment 3

[0062] The mine-use polyethylene pipe of the present invention comprises the following components by weight: the mine-use polyethylene pipe comprises the following components by weight: 80 parts of high-density polyethylene, 10 parts of ethylene-propylene rubber, polyethylene 5 parts of propylene, 3 parts of low-density polyethylene, 5 parts of lubricant, 3 parts of compatibilizer, 0.1 part of vulcanizing agent, 6 parts of flame retardant, 10 parts of carbon black, and 1 part of sulfur.

[0063] Wherein, the melt index of the high-density polyethylene resin is 8g / 10min, and the density is 0.965g / cm 3 , an HDPE resin containing the following a) and b) components: a) a low molecular weight ethylene copolymer having a weight average molecular weight of 10,000 amu and a short chain branching index of 2.5; b) a weight average molecular weight of 800,000 amu and A high molecular weight ethylene copolymer with a short chain branching index of 1.6.

[0064] The ethylene-propylene rub...

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Abstract

The invention relates to a mine polyethylene tube which comprises the following components in parts by weight: 55-85 parts of high-density polyethylene, 5-20 parts of ethylene-propylene rubber, 5-20 parts of polypropylene, 3-10 parts of low-density polyethylene, 3-8 parts of lubricant, 2-6 parts of compatilizer, 0.1-6.0 parts of vulcanizing agent, 5-10 parts of flame retardant, 10-20 parts of carbon black and 0-5 parts of sulfur. Compared with the existing mine polyethylene tube, the mine polyethylene tube provided by the invention has the advantages of excellent flame retardancy, favorable aging resistance, favorable corrosion resistance, high chemical stability, favorable wear resistance and strong shock resistance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a mine-used polyethylene pipe. Background technique [0002] Polyethylene is the simplest polymer organic compound and one of the most widely used polymer materials in the world today. Polyethylene is polymerized from ethylene and can be made into various application materials. Pipes are one of the most important ones. Compared with pipes made of other materials, PE pipes have the following characteristics: 1) Good hygienic performance: when PE pipes are processed No heavy metal salt stabilizer is added, the material is non-toxic, has no scaling layer, and does not breed bacteria, which solves the secondary pollution of urban drinking water; 2) Excellent corrosion resistance: except for a few strong oxidants, it can withstand many 3) Long service life: PE pipes can be used safely for more than 50 years under rated temperature and pressure conditions; 4) Good impact res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/16C08L23/12C08L23/08C08K13/02C08K3/04C08K3/06C08K3/22C08K5/101F16L9/12
Inventor 王立君
Owner ZHEJIANG XINDA PLASTIC PIPE
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