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Cable sheath material

A cable sheath and raw material technology, applied in the field of halogen-free low-smoke flame retardant cable sheath material and its preparation, can solve the problems of restricting the process of industrialization, poor compatibility with polymers, and few applications, and achieve slowing down the occurrence of combustion. , Improve compatibility and uniform particle size distribution

Inactive Publication Date: 2017-01-04
RONGCHENG POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many reports on intumescent flame retardants, their research is still in its infancy, and its practical application is less
In addition, intumescent flame retardants do have excellent flame retardant potential, but their shortcomings such as poor compatibility with polymers and easy moisture absorption restrict their industrialization process to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A cable sheath material, including the following raw materials in weight percentage: polyethylene 59.5%, ethylene-vinyl acetate copolymer 20%, nanocomposite flame retardant 5%, auxiliary 13%, antioxidant 2%, crosslinking agent 0.5%.

Embodiment 2

[0022] A cable sheath material includes raw materials in the following weight percentages: polyethylene 78.5%, ethylene-vinyl acetate copolymer 5%, nanocomposite flame retardant 10%, auxiliary agent 5%, and antioxidant 1%. Crosslinking agent 0.5%.

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PUM

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Abstract

A cable sheath material comprises raw materials in percentage by weight as follows: 40%-80% of polyethylene, 5%-20% of an ethylene vinyl acetate copolymer, 15%-40% of a nanoscale composite flame retardant, 5%-20% of an assistant and 0.1%-0.5% of a crosslinking agent. Compared with a conventional cable material formed by simply mixing an intumescent flame retardant with inorganic hydroxide, the cable sheath material has better material homogeneity, common pores are avoided in the material, and the cable sheath material has better insulation and flame retardant properties.

Description

Technical field [0001] The invention relates to a cable sheath material, in particular to a halogen-free low-smoke flame-retardant cable sheath material and a preparation method thereof. Background technique [0002] With the rapid and steady growth of the national economy and the rapid development of urban construction, a large number of buildings with various functions have been constructed, which has resulted in a corresponding increase in the probability of fire. In places where the population is relatively dense and prone to fire, high flame retardant and fireproof power cables should be used to meet the requirements of use. Because the common high flame retardant fireproof power cable insulation only uses the inorganic composite insulating material mica tape to wrap around, the mica powder on the mica tape is easy to fall off, which causes the insulation performance and fire performance to decline. The extrusion filled silicone rubber is used to fill the cable core. For ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K9/04C08K3/22C08K5/524H01B7/295
CPCC08K2201/003C08K2201/011C08L23/06C08L2201/02C08L2201/22C08L2203/202H01B7/295C08L23/0853C08K9/04C08K2003/2227C08K5/524
Inventor 李晓鹏宋智通王平宋华国韩天旬宋佩儒张毅张文斌梁传清樊佳明
Owner RONGCHENG POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO