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Flame-retardant sheath material for electric wire and preparation method thereof

A sheathing material and flame-retardant technology, applied in the field of flame-retardant wire sheathing materials and their preparation, can solve the problems of low mechanical strength, easy combustion, poor high temperature resistance, etc., and achieve good flame retardancy and tensile strength. High, meet the needs of practical applications

Inactive Publication Date: 2015-12-30
SUZHOU KUANWEN ELECTRONICS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wire and cable sheathing materials on the market still have problems such as low mechanical strength and poor high temperature resistance. What is more serious is that most wire and cable sheathing materials are easy to burn, and even cause fires and bring safety hazards.

Method used

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  • Flame-retardant sheath material for electric wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing a flame-retardant wire sheath material, comprising the steps of:

[0022] (1) In parts by weight, put 60 parts of polyvinylidene fluoride, 27 parts of chloroprene rubber and 18 parts of methyl vinyl silicone rubber in an internal mixer, keep the internal mixing temperature at 100°C, and the internal mixing time for 15 minutes After cooling to room temperature;

[0023] (2) In parts by weight, 4 parts of zirconia, 2 parts of silicon carbide, 3 parts of magnesium carbonate, 5 parts of heavy calcium carbonate, 3 parts of asbestos fiber and 1 part of lithium petalite are placed in a high-speed mixer, and the Stir for the first time at 80°C, then add 5 parts of tris(2-ethylhexyl) trimellitate, 3 parts of isodecyl myristate, 4 parts of dioctyltin, 1 part of dibutyl maleate and The cooled material in step (1) is stirred for the second time at 120°C to obtain the mixture;

[0024] (3) Put the mixture in step (2) in a 110°C open mill for thin pass treatm...

Embodiment 2

[0026] A method for preparing a flame-retardant wire sheath material, comprising the steps of:

[0027] (1) In parts by weight, put 75 parts of polyvinylidene fluoride, 40 parts of chloroprene rubber and 30 parts of methyl vinyl silicone rubber in an internal mixer, keep the internal mixing temperature at 130°C, and the internal mixing time for 30 minutes After cooling to room temperature;

[0028] (2) In parts by weight, put 10 parts of zirconia, 11 parts of silicon carbide, 10 parts of magnesium carbonate, 12 parts of heavy calcium carbonate, 10 parts of asbestos fiber and 7 parts of lithium petalite in a high-speed mixer. Stir for the first time at 120°C, then add 16 parts of tris(2-ethylhexyl) trimellitate, 15 parts of isodecyl myristate, 13 parts of dioctyltin, 5 parts of dibutyl maleate and The cooled material in step (1) is stirred for the second time at 150°C to obtain the mixture;

[0029] (3) Put the mixture in step (2) in a 130°C open mill for 7 times of thin pass...

Embodiment 3

[0031] A method for preparing a flame-retardant wire sheath material, comprising the steps of:

[0032] (1) In parts by weight, put 67 parts of polyvinylidene fluoride, 33 parts of chloroprene rubber and 24 parts of methyl vinyl silicone rubber in an internal mixer, keep the internal mixing temperature at 115°C, and the internal mixing time for 20 minutes After cooling to room temperature;

[0033] (2) In parts by weight, 7 parts of zirconia, 6 parts of silicon carbide, 7 parts of magnesium carbonate, 8 parts of heavy calcium carbonate, 6 parts of asbestos fiber and 4 parts of lithium petalite are placed in a high-speed mixer, and the Stir for the first time at 100°C, then add 10 parts of tris(2-ethylhexyl) trimellitate, 9 parts of isodecyl myristate, 8 parts of dioctyltin, 3 parts of dibutyl maleate and The cooled material in step (1) is stirred for the second time at 135°C to obtain the mixture;

[0034] (3) Put the mixture in step (2) in a 120°C open mill for 4 times, and...

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Abstract

The invention discloses a flame-retardant sheath material for an electric wire. The flame-retardant sheath material is prepared from the following raw materials by weight: 60 to 75 parts of polyvinylidene fluoride, 27 to 40 parts of chloroprene rubber, 18 to 30 parts of methyl vinyl silicone rubber, 5 to 16 parts of tris(2-ethylhexyl) trimellitate, 3 to 15 parts of isodecyl myristate, 4 to 13 parts of dioctyltin, 4 to 10 parts of zirconia, 2 to 11 parts of silicon carbide, 3 to 10 parts of magnesium carbonate, 5 to 12 parts of heavy calcium carbonate, 3 to 10 parts of asbestos fiber, 1 to 7 parts of petalite and 1 to 5 parts of dibutyl maleate. The invention also discloses a preparation method for the flame-retardant sheath material. The flame-retardant sheath material for the electric wire in the invention has good flame retardation according with requirements of the cable industry on flame retardation. Moreover, the sheath material prepared in the invention has high tensile strength and meets demands of practical application.

Description

technical field [0001] The invention belongs to the field of wire and cable materials, in particular to a flame-retardant wire sheath material and a preparation method thereof. Background technique [0002] Wire and cable are wire products that transmit electric (magnetic) energy, transmit information, and realize electromagnetic energy conversion. They are widely used in various fields of the national economy and are known as the "vessels" and "nerves" of the national economy. The wire and cable manufacturing industry is one of the largest supporting industries in the national economy. It is the second largest industry in the machinery industry after the automobile industry. Wire and cable products are widely used in electric power, energy, transportation, communications, automobiles, and petrochemical industries. . [0003] At present, the wire and cable are provided with a protective layer for protection, the so-called "sheath". However, the wire and cable sheathing mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08L11/00C08L83/07C08K13/04C08K5/12C08K3/22C08K3/34C08K3/26C08K7/12H01B3/44H01B7/17H01B7/295B29C47/92B29B7/28B29C48/92
Inventor 翁宇飞李力南
Owner SUZHOU KUANWEN ELECTRONICS SCI & TECH