Power cable insulating layer material and preparing method thereof

A technology of power cable and insulating layer

Inactive Publication Date: 2014-11-12
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still defects in the cable materials currently on the market, some are too viscous, and some have low elongation, so we urgently need to improve the material, and in the prior art, in order to increase the flame retardant characteristics of the cable, a large amount of inorganic retardant has been added. Combustible materials, resulting in an increase in the overall hardness of the cable, and even prone to outer layer breakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a high-strength flame-retardant cable, comprising the steps of:

[0020] (1), get 70 parts of polyvinyl chloride, 3 parts of ethylene-vinyl acetate copolymers, 10 parts of polyvinylidene chloride, 10 parts of methyl vinyl silicone rubber, and 15 parts of GNA type neoprene by weight and mix them evenly to obtain Main ingredients, put the main ingredients in a single-screw extruder for blending, granulate to obtain the base resin, open the internal mixer and preheat to 50-55°C, then add the above-mentioned base resin for banburying, the banburying time is 2- 3min, prepare material A;

[0021] (2) Add 5 parts of epoxy fatty acid octyl esters (parts by weight, unless otherwise specified below) to the prepared material A, 1 part of barium stearate, 10 parts of aluminum hydroxide, 5 parts of phase Compatibility agent, 8 parts of flame retardant system, 0.1 part of antioxidant mixed evenly;

[0022] The compatibilizer is prepared by mixing POE-g-MAH an...

Embodiment 2

[0030] A method for preparing a high-strength flame-retardant cable, comprising the steps of:

[0031] (1), get 70 parts of polyvinyl chloride, 3 parts of ethylene-vinyl acetate copolymers, 10 parts of polyvinylidene chloride, 10 parts of methyl vinyl silicone rubber, and 15 parts of GNA type neoprene by weight and mix them evenly to obtain Main ingredients, put the main ingredients in a single-screw extruder for blending, granulate to obtain the base resin, open the internal mixer and preheat to 50-55°C, then add the above-mentioned base resin for banburying, the banburying time is 2- 3min, prepare material A;

[0032] (2) In the prepared material A, add 6 parts of epoxy fatty acid octyl esters (parts by weight, hereinafter are parts by weight if not otherwise specified), 1 part of barium stearate, 10 parts of aluminum hydroxide, 5 parts of phase Compatibility agent, 10 parts of flame retardant system, 0.1 part of antioxidant mixed evenly;

[0033] The compatibilizer is pre...

Embodiment 3

[0041] The flame retardant cable sheath material described in embodiment 1-2 is carried out performance test, and test result is as follows:

[0042] Table 1: Flame retardant performance test results

[0043]

[0044] Tensile strength (Mpa)

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PUM

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Abstract

The invention relates to a power cable insulating layer material and a preparing method thereof. The material comprises, by weight, 70 parts of polyvinyl chloride, 3 parts of ethylene-vinyl acetate copolymer, 10 parts of polyvinylidene chloride, 10 parts of methyl vinyl silicone rubber, 15 parts of GNA type chloroprene rubber, 5-6 parts of epoxy fatty acid essien ester, 1 part of barium stearate, 10 parts of aluminum hydroxide, 5 parts of compatilizer, 8-10 parts of fire resistant systems and 0.1 part of antioxygen. The prepared fire resistant cable material is obvious in synergistic effect, good in antioxidant effect, high in stability and obvious in fire resistant effect, and has wide application prospects.

Description

technical field [0001] The invention belongs to the field of polymer plastics for power cables, and in particular relates to a material for an insulating layer of a power cable and a preparation method thereof. Background technique [0002] In recent years, with the increasing development and popularization of the use of wires and cables in production and life, the demand for wires and cables has increased rapidly, and with the development of the economy, the requirements for its materials have become higher and higher. It requires softness, wear resistance, and durability. low temperature performance. Most of them are flame-retardant cables. As the name suggests, flame-retardant cables refer to the fact that under the specified test conditions, the sample is burned. After the test fire source is removed, the spread of the flame is only within a limited range. A cable that extinguishes itself within a limited time. Its fundamental characteristics are: it may be burned out ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/08C08L27/08C08L83/07C08L11/00C08L61/14C08K5/098C08K3/22C08K3/02C08G8/28H01B3/44
Inventor 张平刘克伟杨金明耿敏袁磊刘超公绪波
Owner STATE GRID CORP OF CHINA
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