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Underground power cable sheath tube

A sheath tube, kaolin technology, applied in power cables, insulated cables, cables and other directions, can solve the problems of acid-base microbial corrosion, poor tensile and flexural strength, complex preparation process, etc., achieve low cost, improve mechanical properties, Simple preparation method

Inactive Publication Date: 2016-07-20
国网山东省电力公司费县供电公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of easy deformation and fracture, easy to be corroded by acid and alkali microorganisms, poor tensile and bending strength, high raw material cost and complicated preparation process in the existing electric power sheath pipe; the invention discloses an underground power cable Sheath tube, the power sheath tube has good performance and can be widely used in industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An underground power cable sheathing tube, which is prepared from the following raw materials in parts by weight:

[0024] 1 part of kaolin, 1 part of magnesium hydroxide, 1 part of tert-butyl peroxybenzoate, 2 parts of calcium stearate, 2 parts of dimethylaminoethyl acrylate, 2 parts of zeolite, 3 parts of sodium humate, triphenyl phosphate 3 parts, 3 parts of polyvinylpyrrolidone, 3 parts of nano-silicon carbide, 4 parts of sepiolite, 4 parts of brucite, 5 parts of aluminum nitride, 7 parts of quartz sand, 20 parts of phenolic resin, 40 parts of polyethylene, ternary 60 parts of ethylene propylene rubber.

[0025] The preparation process of the above-mentioned sheath tube comprises the following steps:

[0026] 1) Add kaolin, magnesium hydroxide, dimethylaminoethyl acrylate and triphenyl phosphate to a high-speed disperser, stir and mix evenly to obtain Mixture A;

[0027] 2) Add zeolite, sepiolite and brucite to the crusher for crushing, and then grind to obtain a ...

Embodiment 2

[0034] An underground power cable sheathing tube, which is prepared from the following raw materials in parts by weight:

[0035] 2 parts of kaolin, 2 parts of magnesium hydroxide, 2 parts of tert-butyl peroxybenzoate, 3 parts of calcium stearate, 3 parts of dimethylaminoethyl acrylate, 3 parts of zeolite, 5 parts of sodium humate, triphenyl phosphate 5 parts, 5 parts of polyvinylpyrrolidone, 5 parts of nano-silicon carbide, 6 parts of sepiolite, 6 parts of brucite, 7 parts of aluminum nitride, 10 parts of quartz sand, 30 parts of phenolic resin, 70 parts of polyethylene, ternary 100 parts of ethylene propylene rubber.

[0036] The preparation process of the above-mentioned sheath tube comprises the following steps:

[0037] 1) Add kaolin, magnesium hydroxide, dimethylaminoethyl acrylate and triphenyl phosphate to a high-speed disperser, stir and mix evenly to obtain Mixture A;

[0038] 2) Add zeolite, sepiolite and brucite to the crusher for crushing, and then grind to obta...

Embodiment 3

[0045]Measurement of various performance parameters of the sheath pipe of the present invention: the outer diameter is 100 mm, the wall thickness is 5 mm, and the length is 10 m as an example. Tensile strength, bending strength, bus hardness and thermal conductivity refer to GB / T1458, GB / T1449, GB / T3854, GB / T5990 respectively. The specific results are shown in Table 1.

[0046] Table 1

[0047] group Tensile strengthMpa Bending strength Mpa bus hardness Thermal conductivityW / m.K Example 1 227 253 51 0.63 Example 2 211 246 53 0.66

[0048] Salt resistance test: The test material was soaked in 8% sodium chloride solution for 60 days, the tensile strength decreased by only 1.2%, the bending strength decreased by 2.3%, and the bus hardness decreased by 1.7%.

[0049] Heat resistance test: Put the test sample into boiling water and boil for 1 hour, no deformation and foaming will appear, and more than 95% of the tensile strength, bending str...

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Abstract

The invention belongs to the field of power materials and discloses an underground power cable sheath tube. The underground power cable sheath tube is prepared from kaolin, magnesium hydroxide, tert-butyl peroxybenzoate, calcium stearate, N,N-dimethylaminoethyl acrylate, zeolite, sodium humate, triphenyl phosphate, polyvinylpyrrolidone, nanometer silicon carbide, sepiolite, brucite, aluminum nitride, quartz sand, phenolic resin, polyethylene and ethylene-propylene-diene monomer. The underground power cable sheath tube is simple and feasible in preparation technology, low in raw material cost and high in corrosion resistance and mechanical strength.

Description

technical field [0001] The invention belongs to the field of electric power materials and discloses an underground power cable sheathing tube. Background technique [0002] Underground cables, compared with common overhead lines, are also called underground cables because they are often buried underground. A cable is a wire made of one or more mutually insulated conductors surrounded by an insulation and a protective layer, and is used to transfer power or information from one place to another. Underground cables are different from elevated high-voltage lines, and cables are often laid in cable trenches, tunnels, pipelines or indoors. [0003] The power sheath tube is a heat shrinkable tube commonly used for insulation protection on cables. The main material of this type of product is PE. After two processes of irradiation crosslinking and heating expansion, it has the function of heat shrinkage, and the shrinkage ratio is 3:1. Left and right, with diameters ranging from 5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/06C08L61/06C08L39/04C08K13/02C08K3/34C08K3/36C08K3/22C08K5/14C08K5/098C08K5/17C08K5/523C08K3/28H01B9/00H01B7/28H01B7/282H01B7/18
CPCC08L23/16C08L2203/20C08L2205/02C08L2205/035H01B7/18H01B7/28H01B7/282H01B9/00C08L23/06C08L61/06C08L39/04C08K13/02C08K3/34C08K3/36C08K3/346C08K2003/2224C08K5/14C08K5/098C08K5/17C08K5/523C08K2003/282
Inventor 李志国王海洋高超孟祥龙罗晓艳郭英
Owner 国网山东省电力公司费县供电公司
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