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Permanent weather-proof crosslinked polyethylene insulation material

An insulating material, low-density polyethylene technology, applied in insulators, organic insulators, plastic/resin/wax insulators, etc., can solve problems such as limited weather resistance, reduce water absorption, improve weather resistance, and good application prospects.

Inactive Publication Date: 2018-06-19
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defect of limited weather resistance of the existing cross-linked polyethylene insulating material used in overhead cables, and then provide a cross-linked polyethylene insulating material resistant to high temperature, rain and air pollution

Method used

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  • Permanent weather-proof crosslinked polyethylene insulation material

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Embodiment 1

[0024] This embodiment provides a kind of insulation material, and its raw material comprises by weight:

[0025] 100g low density polyethylene, 1.5g Super P carbon black, 2.2g dicumyl peroxide, 0.5g antioxidant 1035, 0.2g polyvinylidene fluoride. The density of low density polyethylene used is 0.920±0.003g / cm 3 , the melt flow index is 2.5g / 10min, the sulfur content of the carbon black used is 100ppm, the ash content is 100ppm, and the particle size is 10nm.

[0026] The preparation method of this material is as follows: feed the screw extruder after mixing the low-density polyethylene, Super P carbon black, antioxidant 1035 and polyvinylidene fluoride of the above-mentioned quality, then 2.2g of dicumyl peroxide Inject into the above-mentioned screw extruder through the pump and the side feed port, control the temperature of each zone at 110-120°C, carry out melt extrusion and granulation, and then cool down to obtain the insulating material.

Embodiment 2

[0028] The cross-linked polyethylene insulating material provided in this embodiment, its raw material comprises by weight:

[0029] 100g of low-density polyethylene, 1g of Super P carbon black, 1g of bis-tert-butylperoxydicumene, 0.1g of antioxidant 736, and 1g of polyhexafluoropropylene. The density of low density polyethylene used is 0.920±0.003g / cm 3 , the melt flow index is 3g / 10min, the sulfur content of the carbon black used is 500ppm, the ash content is 300ppm, and the particle size is 10nm.

[0030] The preparation method of this material is as follows: feed the screw extruder after mixing the low-density polyethylene, Super P carbon black, antioxidant 736 and polyhexafluoropropylene of the above-mentioned quality, and then add 1g of bis-tert-butyl peroxy diiso The propylene benzene is injected into the above-mentioned screw extruder through the pump and the side feed port, and the temperature of each zone is controlled at 110-120°C, melt-extruded and granulated, and...

Embodiment 3

[0032] The cross-linked polyethylene insulating material provided in this embodiment, its raw material comprises by weight:

[0033] 100g low-density polyethylene, 3g Super P carbon black, 3g dicumyl peroxide, 0.5g β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate and 1g poly Mixture of hexafluoropropylene and silicone resin. The density of low density polyethylene used is 0.920±0.003g / cm 3 , the melt flow index is 2g / 10min, the sulfur content of the carbon black used is 250ppm, the ash content is 500ppm, and the particle size is 15nm.

[0034] The preparation method of this material is as follows: low-density polyethylene of above-mentioned quality, Super P carbon black, β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 0.5g Polyhexafluoroethylene and 0.5g of silicone resin are mixed and fed into the screw extruder, and then 3g of dicumyl peroxide is injected into the above screw extruder through the pump and the side feed port, and the temperature of...

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Abstract

The invention belongs to the field of insulation materials, and particularly relates to a crosslinked polyethylene insulation material. The crosslinked polyethylene insulation material provided by theinvention is characterized in that an excellent ultraviolet prevention effect is obtained by adding 1-3 parts of special carbon black, the water absorption of the material is lowered, and meanwhile,the electric insulation performance of the material is guaranteed; 0.1-1 part of lubricating agent is added, so that the lubricity of the material is increased, a cable prepared from the material is ensured to be free from a phenomenon of sharkskin, meanwhile, frictional force generated when the cable is laid is reduced, the hydrophobic and water-tolerant property of the surface of the cable is also improved, the water absorption is extremely low, the material also can resist rain and air pollution, especially the harm of acid rain and haze, the weather fastness of the prepared cable is integrally improved, and the crosslinked polyethylene insulation material has a good application prospect.

Description

technical field [0001] The invention belongs to the field of insulating materials, and in particular relates to a cross-linked polyethylene insulating material. Background technique [0002] Aerial cables are overhead wires equipped with insulation and protection layers, and are a new power transmission method between overhead wires and underground cables. The use of overhead cables instead of overhead wires can significantly reduce various short-circuit faults in the power transmission system, and can also greatly reduce personal electric shock casualties; and for occasions that do not have the conditions for buried cables such as mountains, the use of aerial cables instead of underground cables is not only It can solve the problem of difficult construction of power transmission lines, and can also greatly reduce the initial construction capital investment. However, since overhead cables are often exposed to the natural environment, they are easily damaged by factors such ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L27/16C08L27/20C08L83/04C08K5/14C08K3/04C08K5/375C08K5/134H01B3/44
CPCC08L23/06C08L2201/08C08L2203/202C08L2205/03C08L2207/066C08L2312/00H01B3/441C08L27/16C08L27/20C08L83/04C08K5/14C08K3/04C08K5/375C08K5/1345
Inventor 张翀于凡杨长龙郑微
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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