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Sheath material for urban power cable

A technology for power cables and sheath materials, which is applied in the field of sheath materials for urban power cables, can solve problems such as loss of functional strength, impact on engineering quality, and reduction in casing hardness, and achieve enhanced mechanical properties, high safety performance, and reduced The effect of internal stress

Inactive Publication Date: 2017-11-24
TONGLING CITY TONGDOU SPECIAL CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, power cables in towns and industrial parks are mostly protected by hard polyvinyl chloride plastic sleeves. This material has good corrosion resistance, light weight, low cost, and simple installation. However, its long-term use temperature does not exceed 50°C, the performance will be significantly reduced due to the influence of the environment or external force for a long time, resulting in a decrease in the hardness of the casing, poor hydrophobicity, gradual loss of functional strength, and easy to break, which will easily affect the overall project quality during construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A sheath material for urban power cables, the raw materials of which include by weight: 50 parts of polyvinyl chloride, 50 parts of polystyrene, 30 parts of neoprene, 3.6 parts of crosslinking agent, 1 part of dimethyldimethoxysilane part, 90 parts of filler, 0.8 part of diisobutyl phthalate, 2.5 parts of disproportionated rosin, 2 parts of microcrystalline paraffin, 2.5 parts of calcium stearate, 0.4 part of barium stearate, and 4 parts of antioxidant.

Embodiment 2

[0015] A kind of sheath material for urban power cables, its raw materials include by weight: 70 parts of polyvinyl chloride, 40 parts of polystyrene, 40 parts of neoprene, 2.8 parts of crosslinking agent, 2 parts of dimethyldimethoxysilane parts, 70 parts of filler, 1.6 parts of diisobutyl phthalate, 1.5 parts of disproportionated rosin, 4 parts of microcrystalline paraffin, 1.5 parts of calcium stearate, 0.8 parts of barium stearate, and 2 parts of antioxidant.

[0016] The crosslinking agent includes by weight: 2 parts of 1,1-bis-(tert-butylperoxy)cyclohexane, and 1.2 parts of disuccinic acid peroxide. The filler comprises by weight: 50 parts of nanometer talcum powder and 30 parts of oxidized starch compound.

[0017] The oxidized starch complex is prepared by the following process: stir zein and phosphate buffer, add oxidized starch and dextran, heat up and stir, then microwave treatment, add soybean phosphate, imidazole, heat up and stir, evaporate to remove water vapor,...

Embodiment 3

[0019] A kind of sheath material for urban power cables, its raw materials include by weight: 55 parts of polyvinyl chloride, 48 parts of polystyrene, 32 parts of neoprene, 3.4 parts of crosslinking agent, 1.2 parts of dimethyldimethoxysilane parts, 85 parts of fillers, 1 part of diisobutyl phthalate, 2.2 parts of disproportionated rosin, 2.5 parts of microcrystalline paraffin, 2.2 parts of calcium stearate, 0.5 parts of barium stearate, and 3.5 parts of antioxidant.

[0020] The crosslinking agent includes by weight: 2.4 parts of 1,1-bis-(tert-butylperoxy)cyclohexane, and 0.8 parts of disuccinic acid peroxide. The filler comprises by weight: 60 parts of nanometer talcum powder and 20 parts of oxidized starch compound.

[0021] The oxidized starch complex is prepared by the following process: stir 20 parts of zein and 80 parts of phosphate buffer in parts by weight, add 30 parts of oxidized starch and 6 parts of dextran, heat up and stir, then microwave treatment, add 3 parts ...

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PUM

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Abstract

The invention discloses a sheath material for an urban power cable. The sheath material is prepared from raw materials in parts by weight as follows: 50-70 parts of polyvinyl chloride, 40-50 parts of polystyrene, 30-40 parts of chloroprene rubber, 2.8-3.6 parts of a crosslinking agent, 1-2 parts of dimethyldimethoxysilane, 70-90 parts of a filling agent, 0.8-1.6 parts of diisobutyl phthalate, 1.5-2.5 parts of disproportionated rosin, 2-4 parts of microcrystalline wax, 1.5-2.5 parts of calcium stearate, 0.4-0.8 parts of barium stearate and 2-4 parts of an antioxidant agent. The sheath material has excellent mechanical performance and good heat stability, still has good hydrophobicity even in the high-temperature environment, is high in hardness and safety performance and long in quality guarantee period, can effectively relieve bending, impact and other external force functions and also can effectively maintain inside structures.

Description

technical field [0001] The invention relates to the technical field of cable sheaths, in particular to a sheath material for urban power cables. Background technique [0002] At present, power cables in towns and industrial parks are mostly protected by hard polyvinyl chloride plastic sleeves. This material has good corrosion resistance, light weight, low cost, and simple installation. However, its long-term use temperature does not exceed 50°C, the performance will be significantly reduced by the environment or external force for a long time, resulting in a decrease in the hardness of the casing, poor hydrophobicity, gradual loss of functional strength, easy to break, and easy to affect the overall project quality during construction. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a sheath material for urban power cables, which has excellent mechanical properties, good thermal stabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L25/06C08L11/00C08L93/04C08L89/00C08L3/10C08L5/02C08K13/02C08K5/14C08K5/5419C08K3/34C08K5/12C08K5/098H01B3/44
CPCC08L27/06C08K2201/011C08K2201/014C08L25/06C08L2201/08C08L2203/202C08L2205/035H01B3/442H01B3/443C08L11/00C08L93/04C08L89/00C08L3/10C08L5/02C08K13/02C08K5/14C08K5/5419C08K3/34C08K5/12C08K5/098
Inventor 赵家玉
Owner TONGLING CITY TONGDOU SPECIAL CABLE CO LTD
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