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Anti-cracking flame-retardant cable sheath material and preparation method thereof

A technology for flame-retardant cables and sheathing materials, which is applied to circuits, electrical components, plastic/resin/wax insulators, etc. It can solve the problems of low addition of multifunctional modifiers and poor mechanical properties of cable sheathing materials. Excellent mechanical properties, improved flame retardancy and mechanical properties, and good compatibility

Inactive Publication Date: 2019-10-01
国网河南省电力公司桐柏县供电公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patented polyolefin blend matrix resin is a mixture of ethylene-vinyl acetate copolymer and linear low-density polyethylene, ultra-low-density polyethylene, and high-density polyethylene in any proportion. The amount of additive added is small, and the mechanical properties of the obtained cable sheathing material are poor

Method used

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  • Anti-cracking flame-retardant cable sheath material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An anti-cracking flame-retardant cable sheathing material, made of the following parts by weight:

[0027] Linear low-density polyethylene 40 parts, high-density polyethylene 10 parts, methyl vinyl silicone rubber 25 parts, ethylene-octene copolymer 20 parts, hydrogen-containing silicone oil 5 parts, talc 4 parts, aluminum nitride nanoparticles 0.5 Parts, 10 parts of aluminum hydroxide, 6 parts of zinc borate, 1 part of antioxidant, 0.2 part of chloroplatinic acid and 1 part of crosslinking agent.

[0028] The methyl vinyl silicone rubber is vinyl-terminated polydimethylsiloxane, the molecular weight of the vinyl-terminated polydimethylsiloxane is 500,000-700,000, and the vinyl content is 0.05-0.1 mol %.

[0029] The hydrogen-containing silicone oil is polymethylhydrogensiloxane, the molecular weight is 2000-4000, and the hydrogen content is 0.5-2wt%.

[0030] The aluminum nitride nano particles have a particle size of 20-100 nm and a thermal conductivity of 150-320 W / m·K.

[0...

Embodiment 2

[0038] An anti-cracking flame-retardant cable sheathing material, made of the following parts by weight:

[0039] 45 parts of linear low-density polyethylene, 11 parts of high-density polyethylene, 26 parts of methyl vinyl silicone rubber, 22 parts of ethylene-octene copolymer, 5 parts of hydrogen-containing silicone oil, 5 parts of talc powder, 0.8 parts of aluminum nitride nanoparticles Parts, 12 parts of aluminum hydroxide, 7 parts of zinc borate, 1.2 parts of antioxidant, 0.3 parts of chloroplatinic acid and 1.5 parts of crosslinking agent.

[0040] The methyl vinyl silicone rubber is vinyl-terminated polydimethylsiloxane, the molecular weight of the vinyl-terminated polydimethylsiloxane is 500,000-700,000, and the vinyl content is 0.05-0.1 mol %.

[0041] The hydrogen-containing silicone oil is polymethylhydrogensiloxane, the molecular weight is 2000-4000, and the hydrogen content is 0.5-2wt%.

[0042] The aluminum nitride nano particles have a particle size of 20-100 nm and a t...

Embodiment 3

[0050] An anti-cracking flame-retardant cable sheathing material, made of the following parts by weight:

[0051] 48 parts of linear low-density polyethylene, 12 parts of high-density polyethylene, 28 parts of methyl vinyl silicone rubber, 24 parts of ethylene-octene copolymer, 6 parts of hydrogen-containing silicone oil, 5 parts of talc powder, 1 part of aluminum nitride nanoparticles Parts, 14 parts of aluminum hydroxide, 7 parts of zinc borate, 7 parts of antioxidant, 0.1 part of chloroplatinic acid and 2 parts of crosslinking agent.

[0052] The methyl vinyl silicone rubber is vinyl-terminated polydimethylsiloxane, the molecular weight of the vinyl-terminated polydimethylsiloxane is 500,000-700,000, and the vinyl content is 0.05-0.1 mol %.

[0053] The hydrogen-containing silicone oil is polymethylhydrogensiloxane, the molecular weight is 2000-4000, and the hydrogen content is 0.5-2wt%.

[0054] The aluminum nitride nano particles have a particle size of 20-100 nm and a thermal c...

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Abstract

The invention discloses an anti-cracking flame-retardant cable sheath material. The material is prepared from, by weight, 40-55 parts of linear low-density polyethylene, 10-15 parts of high-density polyethylene, 25-40 parts of methyl vinyl silicone rubber, 20-30 parts of ethylene-octylene copolymer, 5-10 parts of hydrogen-containing silicone oil, 4-8 parts of talcum powder, 0.5-1.5 parts of aluminum nitride nano-particles, 10-20 parts of aluminum hydroxide, 6-10 parts of zinc borate, 1-3 parts of an antioxidant, 0.1-0.3 part of chloroplatinic acid and 1-5 parts of a cross-linking agent. The anti-cracking flame-retardant cable sheath material is excellent in mechanical property, flame retardancy and cracking resistance.

Description

Technical field [0001] The invention belongs to the technical field of cables, and specifically relates to an anti-cracking flame-retardant cable sheath material and a preparation method thereof. Background technique [0002] The role of the wire sheathing material is to provide a safe insulating protective layer for the transmission metal conductor, so as to avoid the conductor leakage, short circuit and other accidents that affect the safety of power supply. Cable sheathing materials mainly include polyethylene and polyvinyl chloride. Polyvinyl chloride sheathed cables are relatively cheap, have higher heat resistance and oxygen index, are not easy to burn, simple to operate, and easy to process. As for cable sheathing materials, PVC cable sheathing materials have caused more and more environmental problems. The combustion process of PVC cables releases toxic HCl gas. In recent years, with the increase of people’s awareness of environmental protection, the The vinyl cable shea...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L83/07C08L83/05C08K13/02C08K3/22C08K3/38C08K3/28C08K3/34H01B3/44
CPCC08K2003/2227C08K2003/282C08K2003/387C08K2201/003C08K2201/011C08L23/0815C08L2201/02C08L2201/08C08L2203/202C08L2205/025C08L2205/035C08L2205/05H01B3/441C08L23/06C08L83/04C08K13/02C08K3/22C08K3/38C08K3/28C08K3/34
Inventor 陈壮惠爽仝娜
Owner 国网河南省电力公司桐柏县供电公司
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