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Power cable sheath tube with high insulativity

A power cable, high insulation technology, applied in the field of sheath tube production, can solve the problems of loss of efficacy, corrosion resistance, etc., to achieve the effect of enhancing oxidation resistance, increasing high insulation, high strength and good mechanical properties

Active Publication Date: 2021-09-03
安庆市悦发管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power cable sheath tube with high insulation, which not only has high insulation, but also has corrosion resistance and long durability, so as to solve the problem that the existing power cable sheath tube is not corrosion-resistant and aging cracks occur , the problem of losing efficacy

Method used

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  • Power cable sheath tube with high insulativity
  • Power cable sheath tube with high insulativity
  • Power cable sheath tube with high insulativity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Anti-corrosion additives are made through the following steps:

[0028] Step A. Dissolve 0.02mol 4-hydroxybenzaldehyde in 10mL dimethyl sulfoxide, then add 0.02mol potassium carbonate and 0.1g potassium iodide, raise the temperature to 112°C, add 0.02mol 1-bromoperfluoroheptane dropwise, drop The acceleration is 1 drop / second, react for 8 hours, cool down, pour the reaction mixture into a large amount of deionized water, and place it at 5°C for 30 minutes, a large amount of white precipitate is produced, filter, wash with deionized water repeatedly for 3 times, dry to constant weight, and obtain intermediate Body 1;

[0029] Step B. Add 0.03mol of intermediate 1, 0.06mol of phenol and 15mL of glacial acetic acid into a three-neck flask equipped with a condensing reflux tube and a stirring magnet, and add concentrated sulfuric acid and ice with a constant pressure dropping funnel under stirring at 0°C. Mixture of acetic acid was 40mL, the rate of addition was 1 drop / sec...

Embodiment 2

[0032] Anti-corrosion additives are made through the following steps:

[0033] Step A. Dissolve 0.02mol of 4-hydroxybenzaldehyde in 30mL of dimethyl sulfoxide, then add 0.02mol of potassium carbonate and 0.1-0.2g of potassium iodide, raise the temperature to 112°C, and add dropwise 0.022mol of 1-bromoperfluoroheptane , the dropping rate is 1 drop / second, react for 8 hours, cool the reaction mixture into a large amount of deionized water, place it at 5°C for 30 minutes, a large amount of white precipitate is produced, filter, wash with deionized water repeatedly for 3 times, dry to constant weight, Intermediate 1 is obtained;

[0034]Step B. Add 0.03mol of intermediate 1, 0.06mol of phenol and 30mL of glacial acetic acid into a three-neck flask equipped with a condensing reflux tube and a stirring magnet, and add concentrated sulfuric acid and ice with a constant pressure dropping funnel under stirring at 2°C. The mixed solution of acetic acid was 50mL, and the dropping rate w...

Embodiment 3

[0037] A power cable sheathing tube with high insulation, comprising the following raw materials in parts by weight: 90 parts of polypropylene, 8 parts of calcium carbonate, 3 parts of glass fiber, 5 parts of talcum powder, 1 part of carbon black, and 0.5 parts of coupling agent , 0.3 parts of antioxidant, 0.3 part of lubricant, 1.5 parts of anti-corrosion additive prepared in embodiment 1, wherein, the coupling agent is a titanate coupling agent; the antioxidant is antioxidant 1010, antioxidant The oxidizing agent 168 is mixed according to the mass ratio of 1:3, and the lubricant is stearic acid.

[0038] This kind of high insulation power cable sheath is made through the following steps:

[0039] Step 1, coupling agent and acetone are made into coupling agent solution, then coupling agent solution and calcium carbonate, glass fiber, talcum powder, carbon black are mixed and stirred for 10min, then transferred to a vacuum drying oven for drying, and solvent is removed to obta...

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Abstract

The invention discloses a power cable sheath tube with high insulativity, and belongs to the technical field of sheath tube production. The power cable sheath tube comprises the following raw materials by weight: 90-150 parts of polypropylene, 8-17 parts of calcium carbonate, 3-12 parts of glass fiber, 5-12 parts of talcum powder, 1-3 parts of carbon black, 0.5-1.5 parts of a coupling agent, 0.3-0.8 part of an antioxidant, 0.3-1.2 parts of a lubricant, and 1.5-3.5 parts of an anti-corrosion auxiliary agent. And the corrosion-resistant auxiliary agent is introduced into the polypropylene base material, and the corrosion resistance and high insulativity of the power cable sheath tube are further improved through the special molecular structure of the corrosion-resistant auxiliary agent. Due to the fact that molecules of the corrosion-resistant auxiliary agent have long fluorine-containing alkyl chains, the fluorine-containing alkyl chains are easy to gather on the surface of the sheath tube to form a fluorine chain layer, and the fluorine-fluorine chain has high bond energy, so that the corrosion-resistant auxiliary agent has high corrosion resistance, mechanical property and insulating property.

Description

technical field [0001] The invention belongs to the technical field of sheath tube production, and in particular relates to a power cable sheath tube with high insulation. Background technique [0002] Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. They are cables used to transmit and distribute electric energy; with the modernization of urban planning, it has almost become normal for cables to go into the ground , usually adopts non-excavation technology for construction, which has the advantages of no impact on traffic, little damage to stratum structure, and short construction period. Usually, considering the safety and the service life of the power cable, putting a sheath tube on the outer layer of the power cable can effectively prevent the power cable from being corroded by soil, rain, etc. Leakage, elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L91/06C08K9/06C08K9/04C08K3/26C08K7/14C08K3/04C08K5/18
CPCC08K9/06C08K9/04C08K3/26C08K7/14C08K3/04C08K5/18C08L23/12C08K2003/265C08L2203/20C08L2201/08C08L91/06Y02A30/14
Inventor 马刚舒玉法舒琳
Owner 安庆市悦发管业有限公司
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