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High-toughness flame-retardant cable for electric power circuit and preparation process of cable

A technology for flame-retardant cables and power lines, which is applied to circuits, electrical components, plastic/resin/wax insulators, etc. It can solve the problems of low strength of silicone rubber cables, failure to meet power circuits, poor toughness, etc., and achieve high hardness, Effect of good processability, high dielectric constant and breakdown voltage

Inactive Publication Date: 2018-04-20
YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the widely used cables are mainly silicone rubber cables. Although they have good heat resistance and cold resistance, silicone rubber cables have disadvantages such as low strength, easy oxidation, and poor toughness, which cannot meet the long-term stability requirements of power circuits.

Method used

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  • High-toughness flame-retardant cable for electric power circuit and preparation process of cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 80 parts of hydrogenated polystyrene-butadiene block copolymer, 80 parts of polypropylene, 4 parts of maleic anhydride, 12 parts of MCA flame retardant, 6 parts of diethyl aluminum hypophosphite, 7 parts of montmorillonite, silicone 2 parts of powder, 1 part of dicumyl peroxide, 2 parts of antioxidant.

[0022] The hydrogenated polystyrene-butadiene block copolymer takes butadiene and styrene as monomers, cyclohexane as solvent, n-butyllithium as initiator, tetrahydrofuran as activator, and silicon tetrachloride as The coupling agent is prepared by anionic polymerization to obtain the base rubber, and then hydrogenated with a cyanocatalyst.

[0023] The polypropylene is a crystalline polymer with regular structure, and the specific model is polypropylene T30S thermoplastic resin.

[0024] The montmorillonite is a kind of silicate natural mineral, containing Al 2 o 3 16.54%, MgO 4.65%, SiO 2 50.95%, is a typical intumescent flame retardant.

[0025] The silicone po...

Embodiment 2

[0032] 120 parts of hydrogenated polystyrene-butadiene block copolymer, 120 parts of polypropylene, 8 parts of maleic anhydride, 15 parts of MCA flame retardant, 10 parts of diethyl aluminum hypophosphite, 10 parts of montmorillonite, silicone 4 parts of powder, 2 parts of dicumyl peroxide, 4 parts of antioxidant.

[0033] The hydrogenated polystyrene-butadiene block copolymer takes butadiene and styrene as monomers, cyclohexane as solvent, n-butyllithium as initiator, tetrahydrofuran as activator, and silicon tetrachloride as The coupling agent is prepared by anionic polymerization to obtain the base rubber, and then hydrogenated with a cyanocatalyst.

[0034] The polypropylene is a crystalline polymer with regular structure, and the specific model is polypropylene T30S thermoplastic resin.

[0035] The montmorillonite is a kind of silicate natural mineral, containing Al 2 o 3 16.54%; MgO 4.65%; SiO 2 50.95%, is a typical intumescent flame retardant.

[0036] The silico...

Embodiment 3

[0043] 100 parts of hydrogenated polystyrene-butadiene block copolymer, 100 parts of polypropylene, 6 parts of maleic anhydride, 13 parts of MCA flame retardant, 8 parts of diethyl aluminum hypophosphite, 9 parts of montmorillonite, silicone 3 parts of powder, 1.5 parts of dicumyl peroxide, 3 parts of antioxidant.

[0044] The hydrogenated polystyrene-butadiene block copolymer takes butadiene and styrene as monomers, cyclohexane as solvent, n-butyllithium as initiator, tetrahydrofuran as activator, and silicon tetrachloride as The coupling agent is prepared by anionic polymerization to obtain the base rubber, and then hydrogenated with a cyanocatalyst.

[0045] The polypropylene is a crystalline polymer with regular structure, and the specific model is polypropylene T30S thermoplastic resin.

[0046] The montmorillonite is a kind of silicate natural mineral, containing Al 2 o 3 16.54%, MgO 4.65%, SiO 2 50.95%, is a typical intumescent flame retardant.

[0047] The silico...

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Abstract

The invention provides a high-toughness flame-retardant cable for an electric power circuit and a preparation process of the cable. The high-toughness flame-retardant cable is prepared from raw materials of a hydrogenated polystyrene-butadiene block copolymer, polypropylene, maleic anhydride, an MCA (melamine cyanurate) flame retardant, aluminum diethyl phosphinate, montmorillonite, silicone powder, dicumyl peroxide, an antioxidant and the like. The hydrogenated polystyrene-butadiene block copolymer has good mechanical property, weather resistance, heat resistance and compressive deformation resistance, and the dielectric strength reaches 39MV / m; the polypropylene has the characteristics of high strength, large hardness, wear resistance and the like, and has relatively high dielectric coefficient and breakdown voltage; the elastic strength of the composite material obtained by modifying a composite material through the montmorillonite, the silicone powder and the maleic anhydride is increased, the thermal stability is improved, the tensile strength of the composite material is increased to 12.75Mpa, the elongation at break reaches 932.5%, the water resistance is slightly reduced, and the balance torque during melting is reduced; with the addition of the antioxidant, the flame retardancy and thermal stability of the composite material are improved obviously, and the flame resistance of the composite material is increased to 32.

Description

technical field [0001] The invention belongs to the field of power materials, and in particular relates to a high-toughness flame-retardant cable for power lines and a preparation process thereof. Background technique [0002] With the rapid development of modern society, the safety of power lines is becoming more and more important. Power lines are exposed to the outdoors for a long time, which puts forward higher requirements on the physical performance of cables in complex weather. At present, the widely used cables are mainly silicone rubber cables. Although they have good heat resistance and cold resistance, silicone rubber cables have disadvantages such as low strength, easy oxidation, and poor toughness, which cannot meet the long-term stability requirements of power circuits. Contents of the invention [0003] Based on the technical problems of ordinary silicone rubber, the invention provides a high-toughness flame-retardant cable for power lines and a preparation...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08L51/00C08L83/04C08K13/02C08K5/134C08K3/36C08K3/34C08K5/3492H01B3/44
CPCC08L51/06C08L51/006C08L2201/02C08L2201/08C08L2203/202C08L2205/03H01B3/448C08L83/04C08K13/02C08K5/1345C08K3/36C08K3/346C08K5/34928
Inventor 周红军陈文胡必伟丁亚杰杨鑫
Owner YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO
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