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Preparation process of insulating outer layer of irradiation-resistant electric wire used for power transmission line

A technology for insulating outer layers and transmission lines, applied in rubber insulators, organic insulators, etc., can solve the problems of γ-ray resistance and mechanical properties that need to be improved, and can not meet working requirements, etc., and is suitable for large-scale industrial production. Good insulation Performance and corrosion resistance, the effect of excellent cold resistance

Inactive Publication Date: 2016-02-10
国网山东平邑县供电公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used insulating materials are cross-linked polyolefin and ethylene-propylene rubber materials. However, their gamma-ray resistance and mechanical properties need to be improved, which is far from meeting the working requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation process for a radiation-resistant wire insulation outer layer for power transmission lines, comprising the following steps:

[0020] Step 1) Weigh the raw materials: take each raw material according to weight parts for use, wherein, 1 part of alumina, 1 part of lithium bentonite, 1 part of attapulgite, 2 parts of light stabilizer, 2 parts of molybdenum disulfide, 3 parts of brucite parts, 5 parts sodium water glass, 5 parts silicon carbide, 5 parts triphenyl phosphate, 6 parts tri-n-butyl citrate, 6 parts polyethylene wax, 8 parts egg shells, 8 parts brominated polystyrene, chlorinated 30 parts of butyl rubber and 40 parts of EPDM; among them, the particle sizes of alumina, lithium bentonite, molybdenum disulfide and silicon carbide are all 100 meshes; the model of light stabilizer is UV-3346; sodium water glass The modulus is 2;

[0021] Step 2) Preparation of material A: add the same weight of 70% (v / v) ethanol to the lithium bentonite, stir at 500 rpm ...

Embodiment 2

[0028] A preparation process for a radiation-resistant wire insulation outer layer for power transmission lines, comprising the following steps:

[0029] Step 1) Weigh the raw materials: take each raw material according to weight parts for later use; 2 parts of alumina, 2 parts of lithium bentonite, 2 parts of attapulgite, 3 parts of light stabilizer, 3 parts of molybdenum disulfide, 4 parts of brucite, 7 parts sodium water glass, 7 parts silicon carbide, 7 parts triphenyl phosphate, 8 parts tri-n-butyl citrate, 8 parts polyethylene wax, 10 parts egg shells, 10 parts brominated polystyrene, butyl chloride 40 parts of rubber and 60 parts of EPDM rubber; among them, the particle sizes of alumina, lithium bentonite, molybdenum disulfide and silicon carbide are all 100 meshes; the model of light stabilizer is UV-3529; the mold of sodium water glass The number is 2;

[0030] Step 2) Preparation of material A: add the same weight of 70% (v / v) ethanol to the lithium bentonite, stir ...

Embodiment 3

[0037] Performance test of the wire insulating outer layer prepared by the process of the present invention:

[0038] 1. Carry out various performance tests for the radiation-resistant insulating outer layer prepared by the processes of Examples 1 and 2 of the present invention, and the specific results are shown in Table 1:

[0039] Table 1

[0040] group Thickness (mm) Volume resistivity×10 -15 (Ω·cm) Oxygen Index(%) Tensile strength (N / mm 2 ) Elongation at break (%) Hardness (A) Example 1 2.0 2.65 33 17.7 389 80 Example 2 2.0 2.69 34 17.9 381 81

[0041] 2. After γ-ray irradiation (radiation dose is 1000kGy), the change of mechanical properties, the results are shown in Table 2:

[0042] Table 2

[0043] group Tensile strength retention rate (%) Elongation at break retention (%) Hardness retention rate (%) Example 1 95.7 97.2 94.1 Example 2 95.9 97.3 93.9

[0044] Conclusion: The above data...

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Abstract

The invention belongs to the field of electric power materials, and discloses a preparation process of an insulating outer layer of an irradiation-resistant electric wire used for a power transmission line. The preparation process includes the first step of weighing raw materials, the second step of preparing a material A, the third step of manufacturing a material B, the fourth step of preparing a material C, the fifth step of preparing a material D, the sixth step of preparing a material E and the seventh step of preparing the insulating outer layer. The electric wire can be applied to the power transmission line under the irradiation environment, and the application range is widened.

Description

technical field [0001] The invention belongs to the field of electric power materials, and in particular relates to a preparation process of an insulation outer layer of a radiation-resistant wire used for a power transmission line. Background technique [0002] Wires are the main components of transmission lines. They are usually made of one or more mutually insulated conductors covered with an insulating protective layer. the key of. Wires can be divided into various types: such as XLPE insulated power wires, rubber-sheathed flexible wires, coal mine resistance wires, marine wires, aluminum stranded wires and steel-cored aluminum stranded wires, PVC insulated control wires, polyvinyl chloride Ethylene insulated wires, elevator wires, railway signal wires, computer special wires, etc. [0003] At present, the aerospace wires and wires used in power transmission lines and the nuclear island wires of nuclear power plants are required to have excellent properties such as r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/28C08L25/06C08L23/06C08K13/06C08K9/02C08K3/22C08K3/34C08K3/30C08K5/523C08K5/11C08K3/26H01B3/28
CPCC08L23/16C08K2201/005C08K2201/014C08L2201/02C08L2201/08C08L2203/202C08L2205/02C08L2205/035H01B3/28C08L23/283C08L25/06C08L23/06C08K13/06C08K9/02C08K2003/2227C08K3/346C08K2003/3009C08K2003/2224C08K3/34C08K5/523C08K5/11C08K2003/265
Inventor 王庆新董春城赵飞丁文霞苗立华
Owner 国网山东平邑县供电公司
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