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Environmental-protection high-fire-retardant cable insulation material and preparation method thereof

A cable insulation and high flame retardant technology, which is applied in the field of environmental protection and high flame retardant cable insulation materials and its preparation, can solve the problems of low strength of cable insulation materials, and achieve the effects of high flame retardant performance and good flame retardant performance.

Inactive Publication Date: 2015-11-25
WUXI JIABANG ELECTRIC POWER PIPE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of the cable insulation material is low, and the flame retardancy needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0061] The present invention also provides a preparation method of an environment-friendly high flame-retardant cable insulation material, comprising:

[0062] Mix EVA copolymer, methyl vinyl silicone rubber, glass powder, nitrogen and phosphorus flame retardant, compatibilizer, antioxidant, vulcanizing agent and crosslinking agent, banbury and extrude to obtain cable insulation material.

[0063] The nitrogen-phosphorus flame retardant is a nitrogen-phosphorus flame retardant whose surface is activated by silane or titanate.

[0064] The present invention takes EVA copolymer as matrix resin, does not have special requirement to the preparation method of described matrix resin, can prepare according to the preparation method of EVA copolymer well-known to those skilled in the art, preferably, adopt following method to prepare:

[0065] The EVA resin and olefin are mixed in an internal mixer, and after melting, a crosslinking agent is added for melt blending to obtain an EVA co...

Embodiment 1

[0079] 100 g of EVA resin and 110 g of octene were mixed in an internal mixer, and after melting, 10 g of crosslinking agent PPF was added, and melt blending was carried out at 130° C. for 15 minutes to obtain a copolymer of EVA and octene.

Embodiment 2

[0081] 100 g of EVA resin and 105 g of propylene copolymer were mixed in an internal mixer, and after melting, 30 g of crosslinking agent PPCI was added, and melt blending was carried out at 130° C. for 15 minutes to obtain EVA and propylene copolymer.

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PUM

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Abstract

The invention provides an environmental-protection high-fire-retardant cable insulation material, which comprises 30 to 50 parts of EVA (ethylene vinyl acetate) copolymer, 20 to 50 parts of methyl vinyl silicone rubber, 4 to 6 parts of glass powder, 10 to 15 parts of nitrogen-phosphorus flame retardant, 2 to 7 parts of compatilizer, 1 to 5 parts of antioxygen, 1 to 5 parts of vulcanizing agent and 1 to 5 parts of cross-linking agent in parts by mass, wherein the nitrogen-phosphorus flame retardant is the nitrogen-phosphorus flame retardant of which the surface is activated by silane or titanate. The cable insulation material provided by the invention avoids the use of the traditional organic halide flame retardant, does not contain halogen, has higher flame retardant property and is excellent in strength.

Description

technical field [0001] The invention relates to the technical field of cable insulating materials, in particular to an environment-friendly and highly flame-retardant cable insulating material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of electrical machinery, electronic appliances, automobiles and other related industries and the wide application of radiation cross-linking technology in the wire and cable industry, radiation cross-linked wires are also showing a rapid development trend. At present, irradiation cross-linked wires have been successfully used in motors, temperature sensing components, high-power lighting, automotive low-voltage signal control, various locomotives, rail transit, mineral development, X-ray high-voltage firing and high-power transmission industries. Among them, the most widely used is cross-linked polyolefin cable insulation materials. [0003] Cross-linked polyolefin cable insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K5/5419C08L83/07C08K3/34C08K3/40C08L51/06C08K9/06C08K13/06
CPCC08L23/0815C08K2201/011C08L83/04C08L2201/02C08L2201/22C08L2205/03C08L51/06C08K13/06C08K9/06C08K3/40C08K5/5419C08K3/346
Inventor 徐德生
Owner WUXI JIABANG ELECTRIC POWER PIPE FACTORY
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