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Weather-proof flame retardation antistatic crosslinking polyethylene tubing, preparation method and application

A technology of cross-linked polyethylene and antistatic agent, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of inconvenience and high requirements on aging resistance, and achieve strong durability, excellent weather resistance, flame retardant and fire resistance. good effect

Inactive Publication Date: 2013-03-27
嘉兴林鑫管业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, the aging resistance and usability requirements of the pipes used in the coal mine are also very high, because it is very inconvenient to install the pipe once in the coal mine, and we need the safe and long service life of the pipe

Method used

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  • Weather-proof flame retardation antistatic crosslinking polyethylene tubing, preparation method and application
  • Weather-proof flame retardation antistatic crosslinking polyethylene tubing, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Weigh 100 parts of low-density polyethylene, 0.8 parts of antioxidant 1010, 0.5 parts of auxiliary antioxidant DLTP, 5 parts of polyphosphate amine coated with epoxy resin, 4 parts of melamine polyphosphate, and 1.5 parts of boron trioxide according to the ratio of raw materials. 1 part, 0.8 part of bis(β-hydroxyethyl)stearylamine, 0.8 part of polyethylene wax, and 3 parts of graphite powder were mixed in a high-speed mixer for 8 minutes, the temperature was kept at 60-70°C, and the speed was 720r / min;

[0043] Then banbury the above mixture at 50°C for 2-4 minutes, add 1.5 parts of dicumyl peroxide, 1.0 parts of γ-aminopropyltriethoxysilane, and 0.2 parts of dibutyltin dilaurate to carry out cross-linking for 1.5-2 hours , the temperature is kept at 80-90°C;

[0044] Use a parallel twin-screw extruder to extrude and granulate, and the granulation temperature is controlled at 155-165°C;

[0045] Dry the pellets for a period of time before extruding, cooling and cutting...

Embodiment 2

[0047] Weigh 100 parts of low-density polyethylene, 0.5 parts of antioxidant 1010, 0.3 parts of auxiliary antioxidant CA, 6 parts of polyphosphate amine coated with epoxy resin, 6 parts of melamine polyphosphate, and boron trioxide according to the ratio of raw materials 2.5 parts, 1.0 parts of ethylene glycol lauric acid amide, and 1.0 parts of polyethylene wax were mixed in a high-speed mixer for 5 minutes, the temperature was kept at 70-80 ° C, and the speed was 680 r / min;

[0048]Then banbury the above mixture at 40°C for 4-8 minutes, add 1.4 parts of phthaloyl peroxide, 0.8 parts of vinyltrioxysilane, and 0.3 parts of dibutyltin dilaurate for cross-linking for 1.5-2 hours, and keep the temperature at 80~90℃;

[0049] Use a parallel twin-screw extruder to extrude and granulate, and the granulation temperature is controlled at 135-145°C;

[0050] Dry the pellets for a period of time before extruding, cooling and cutting to obtain products; feeding section 120-140°C, plasti...

Embodiment 3

[0052] Weigh 100 parts of low-density polyethylene, 1.1 parts of antioxidant 1010, 0.4 parts of auxiliary antioxidant DLTP, 4 parts of polyphosphate amine coated with epoxy resin, 4 parts of melamine cyanurate, ethylene glycol Mix 1.2 parts of lauric acid amide, 1.1 parts of poly-α-methylstyrene, and 8 parts of carbon black in a high-speed mixer for 10 minutes, keep the temperature at 65-75 ° C, and rotate at 640 r / min;

[0053] Then banbury the above mixture at 65°C for 3 to 4 minutes, add 1.2 parts of dicumyl peroxide, 1.2 parts of γ-aminopropyltriethoxysilane, and 0.2 parts of stannous octoate to carry out crosslinking for 1.5 to 2 hours. Keep it at 80-90°C;

[0054] Use a parallel twin-screw extruder to extrude and granulate, and the granulation temperature is controlled at 145-155°C;

[0055] Dry the pellets for a period of time before extruding, cooling and cutting to obtain products; feeding section 120-140°C, plasticizing section 140-160°C, homogenizing section 160-18...

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Abstract

The invention belongs to the high-molecular plastic modification technology and processing technology field, and relates to a crosslinking polyethylene tubing, a preparation method and an application. The tubing comprises the following components by weight: 100 parts of low density polyethylene, 0.5-1.2 parts of anti-oxidant, 0.3-0.6 parts of assisted anti-oxidant, 8-15 parts of fire retardant, 0-5 parts of flame retardation synergistic agent, 0.8-1.5 parts of antistatic agent, 1.2-1.6 parts of cross-linking agent, 0.8-1.2 parts of coupling agent, 0.8-1.2 parts of dispersant, 0.2-0.5 parts of catalyst and 0-12 parts of additive. Compared with the prior art, the tubing has advantages of stable flame retardation and antistatic property, fireproof and explosion-proof capability, aging resistance, long usage life, light weight, convenient transport and installation. The weather-proof flame retardation antistatic crosslinking polyethylene tubing used for mining is suitable for pipelines of water supply, air exhaust, air compress, gunniting and gas discharge under a coal mine well, the usage is safety and environmental protection.

Description

technical field [0001] The invention belongs to the field of polymer plastic modification technology and processing technology, and relates to a modified cross-linked polyethylene pipe and its preparation method and application. Background technique [0002] As we all know, plastics generally have good electrical insulation properties, but their surface is easy to accumulate static electricity and carry some kind of static electricity. In coal mines, antistatic and anti-combustion plastic pipes are used to make various pipeline equipment for safety, fire prevention and explosion protection. Static materials are used to make equipment, so that the static electricity on the surface of the equipment can be transmitted to the ground in time to avoid excessive accumulation of static electricity, which may cause fire and explosion due to discharge. For a long time, various plastic products have been used underground, but quite a few plastic pipes do not meet the standards stipula...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/06C08K5/134C08K3/32C08K5/3492C08K3/38C08K3/04C08K5/14C08K5/544C08K5/5425C08J3/24F16L9/12
CPCY02A20/20
Inventor 郭学林
Owner 嘉兴林鑫管业科技股份有限公司
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