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Low-smoke halogen-free environment-friendly cable insulating material

A cable insulation and environment-friendly technology, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems affecting the service life and polymerization of insulating materials, achieve good electrical properties, stable chemical properties, and reduce plasticity of materials Effect

Active Publication Date: 2016-08-03
JIANGSU JUYE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cables in the existing locomotive tracks all use EVA elastomer as the main rubber of the insulating material, carbon black and white carbon black as the reinforcing filler, and paraffin or paraffin oil as the plasticizer. , because it cannot be perfectly polymerized with EVA, the plasticizer will migrate to the surface of the material after a period of time, affecting the service life of the insulating material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The cable insulation material of this embodiment is made of the following raw materials in parts by weight: EVA40L-03100 parts, EVA42140 parts, aluminum hydroxide 122 parts, white carbon black 20 parts, RD2 parts, N5503 parts, TAIC1.5 parts, BIBP3.5 4 parts, 8 parts of DOS, 4 parts of Ca_Zn composite heat stabilizer, 4 parts of polyethylene wax of ethylene / vinyl acetate polyethylene wax copolymer (EVA), 1.5 parts of zinc stearate.

[0011] The specific performance index of the insulating material obtained is:

[0012] Tensile strength 11.24MPa;

[0013] Elongation at break 250%;

[0014] Heat aging (158°C 168h) strength retention rate 1.10;

[0015] The retention rate of elongation at break is 0.87;

[0016] Insulation resistivity 2.56×10 15 Ω.cm 3 ;

[0017] Elongation at break at low temperature (-40°C) 40%.

Embodiment 2

[0019] The cable insulation material of this embodiment is made of the following raw materials in parts by weight: EVA40L-0390 parts, EVA42150 parts, aluminum hydroxide 125 parts, white carbon black 10 parts, RD1 part, N5502 parts, TAIC2 parts, BIBP3 parts, DOS9 parts , 5 parts of Ca_Zn composite heat stabilizer, 5 parts of polyethylene wax of ethylene / vinyl acetate polyethylene wax copolymer (EVA), 2 parts of zinc stearate.

[0020] The specific performance index of the insulating material obtained is:

[0021] Tensile strength 11.5MPa;

[0022] Elongation at break 251%;

[0023] Heat aging (158°C 168h) strength retention rate 1.20;

[0024] The retention rate of elongation at break is 0.86;

[0025] Insulation resistivity 2.57×10 15 Ω.cm 3 ;

[0026] The elongation at break at low temperature (-40°C) is 42%.

Embodiment 3

[0028] The cable insulation material of this embodiment is made of the following raw materials in parts by weight: EVA40L-03120 parts, EVA42130 parts, 118 parts of aluminum hydroxide, 30 parts of white carbon black, 4 parts of RD, 4 parts of N5504, 1 part of TAIC, 4 parts of BIBP, and 7 parts of DOS , 3 parts of Ca_Zn composite heat stabilizer, 3 parts of polyethylene wax of ethylene / vinyl acetate polyethylene wax copolymer (EVA), 1 part of zinc stearate.

[0029] The specific performance index of the insulating material obtained is:

[0030] Tensile strength 12.1MPa;

[0031] Elongation at break 254%;

[0032] Heat aging (158°C 168h) strength retention rate 1.26;

[0033] The retention rate of elongation at break is 0.84;

[0034] Insulation resistivity 2.58×10 15 Ω.cm 3 ;

[0035] The elongation at break at low temperature (-40°C) is 41%.

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Abstract

The invention discloses a low-smoke halogen-free environment-friendly cable insulating material and belongs to the field of cable preparation. The material is prepared from, by weight, 90-120 parts of EVA40L-03, 30-50 parts of EVA421, 118-125 parts of aluminum hydroxide, 10-30 parts of white carbon black, 1-4 parts of RD, 2-4 parts of N550, 1-2 parts of TAIC, 3-4 parts of BIBP, 7-9 parts of DOS, 3-5 parts of Ca_Zn composite heat stabilizer, 3-5 parts of polyethylene wax of polyethylene wax copolymer (EVA) of ethylene / vinyl acetate and 1-2 parts of zinc stearate. The polyethylene wax of polyethylene wax copolymer (EVA) of ethylene / vinyl acetate has polar groups in the structure so that affinity of inorganic matter and compatibility of polar resin can be improved in an EVA insulating material, plasticizer is prevented from migrating to the surface of the material in the use process, and the service life of the insulating material is prolonged.

Description

technical field [0001] The invention relates to a cable insulating material, in particular to a low-smoke, halogen-free and environment-friendly cable insulating material, which belongs to the field of cable preparation. Background technique [0002] Cable insulation materials are usually made of rubber, plastic, nylon and other materials as base materials, combined with auxiliary components such as plasticizers, fillers, color masterbatches, and antioxidants. Different cable types and use environments have different performances on cable insulation materials. requirements. The cables in the existing locomotive tracks all use EVA elastomer as the main rubber of the insulating material, carbon black and white carbon black as the reinforcing filler, and paraffin or paraffin oil as the plasticizer. , because it cannot be perfectly polymerized with EVA, the plasticizer will migrate to the surface of the material after a period of time, affecting the service life of the insulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K13/02C08K3/22C08K3/36C08K5/098H01B3/44
CPCC08L23/0853C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/025C08L2205/03H01B3/441C08K13/02C08K2003/2227C08K3/36C08K5/098
Inventor 郑标李丛龙
Owner JIANGSU JUYE CABLE