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A kind of 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, easy to absorb moisture, etc., and achieve slow combustion. Occurrence, improve compatibility, good effect of material uniformity

Inactive Publication Date: 2018-12-11
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, comprising the following raw materials in weight percentage: polyethylene 59.5%, ethylene-vinyl acetate copolymer 20%, nanocomposite flame retardant 5%, auxiliary agent 13%, antioxidant 2%, crosslinking agent 0.5%.

Embodiment 2

[0022] A cable sheath material comprises the following raw materials in weight percentage: 78.5% polyethylene, 5% ethylene-vinyl acetate copolymer, 10% nanocomposite flame retardant, 5% auxiliary agent, and 1% antioxidant. Cross-linking 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 built, and the probability of fire has increased accordingly. In places where the population is relatively dense and prone to fire, high flame-retardant and fire-resistant power cables should be used to meet the use requirements. Since common high flame retardant and fireproof power cables are only insulated with the overlapping wrapping of inorganic composite insulating material mica tape, the mica powder on the mica tape is easy to fall off, resulting in a decrease in insulation performance and fire performance. The gap, this process requires special silicone rubber extrusion equipment to carry ...

Claims

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Application Information

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Patent Type & Authority Patents(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