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Flame-retardant flexible fireproof cable and preparation method thereof

A fire-resistant cable, flame-retardant technology, used in cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of easy aging, small use range, weak heat resistance and insulation performance, and achieve high temperature and aging resistance. The effect of lifting, reasonable overall structure design, and high operating temperature

Active Publication Date: 2016-11-23
安庆横电电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The insulating layer is to evenly and hermetically wrap a layer of non-conductive material around the cable conductor, such as: resin, plastic, silicone rubber, PVC, etc., but these materials are limited by their essential properties, and their heat resistance and insulation properties are relatively weak
[0004] Among the relevant patents that have been applied in China, the patent "A Flame Retardant Tensile Flexible Cable" (application number: 201610040262.X, publication date: 2016-05-04) discloses a flexible cable with flame retardant capability, However, it adopts five layers of metal armor layers. Because it is a circular tubular armor layer, its bendability mu

Method used

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  • Flame-retardant flexible fireproof cable and preparation method thereof

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Embodiment 1

[0037] A flame-retardant flexible fireproof cable, comprising a surface sheath 1, a hollow layer 2, a modified nylon PA66 layer 3 cured with 5wt% magnesium hydroxide flame retardant, a support layer 4, an inner lining 5, an insulating layer 6, and a conductor 7. The surface sheath 1 is made of modified heat vulcanized silicone rubber cured with 5wt% magnesium hydroxide flame retardant; the support layer 4 is made of graphitized carbon fiber; the inner lining 5 is made of ENB EPDM rubber; insulation Layer 6 is made of a mixture of epoxy resin and glass fiber at a weight ratio of 9:1.

[0038] The manufacturing method of the flame-retardant flexible fireproof cable comprises the following steps:

[0039] 1) Selection and preparation of raw materials

[0040] ① The raw material of surface sheath 1 is modified heat vulcanized silicone rubber cured with 5wt% magnesium hydroxide flame retardant. The selection criteria are: the volume resistivity is not less than 2×10 15 Ω·cm, diel...

Embodiment 2

[0065] A flame-retardant flexible fireproof cable, comprising a surface sheath 1, a hollow layer 2, a modified nylon PA66 layer 3 cured with 8wt% magnesium hydroxide flame retardant, a support layer 4, an inner lining 5, an insulating layer 6, and a conductor 7. The surface sheath 1 is made of modified heat vulcanized silicone rubber cured with 8wt% magnesium hydroxide flame retardant; the support layer 4 is made of graphitized carbon fiber; the inner lining 5 is made of ENB EPDM rubber; insulation Layer 6 is made of a mixture of epoxy resin and glass fiber at a weight ratio of 9:1.

[0066] The manufacturing method of the flame-retardant flexible fireproof cable comprises the following steps:

[0067] 1) Selection and preparation of raw materials

[0068] ① The raw material of the surface sheath 1 is a modified thermally vulcanized silicone rubber cured with 8wt% magnesium hydroxide flame retardant. The selection criteria are: the volume resistivity is not less than 2×10 15...

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Abstract

The invention discloses a flame-retardant flexible fireproof cable and a preparation method thereof. The flame-retardant flexible fireproof cable comprises a surface layer sheath, a hollow layer, a support layer, an inner layer, an insulation layer and a conductor. The work temperature of -70 DEG C to 200 DEG C can be born for a long time; the flame retardant grade is V-0; the minimum bending radius is not higher than eight times of the diameter; the thunder-and-lightning abrupt slope peak of 4000 kV/s can be at least resisted; the yield strength is not lower than 80N/mm<2>; the elongation percentage is not lower than 25 percent; the tensile strength is not lower than 100N/m<2>; graphitized carbon fiber manufactured by using a specific method is woven into a net pipe shape to be used as a support layer; the design of a hollow layer is added; high-temperature anti-aging materials are selected to be used as base materials; the excellent high-temperature-resistant insulation performance is obtained. The flame-retardant flexible fireproof cable has the advantages that the integral mechanical performance is good; the insulation performance is high; the flame-retardant performance is realized; the minimum bending radius is small; the high-temperature-resistant performance and the aging-resistant performance are good; the service life is long; the use range is wide.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a flame-retardant flexible fireproof cable and a preparation method thereof. Background technique [0002] A cable is usually a rope-like cable twisted by several or groups of conductors (at least two in each group). Each group of conductors is insulated from each other and is often twisted around a center. Highly insulating overlay. The cable has the characteristics of internal electrification and external insulation. [0003] The insulating layer is to evenly and hermetically wrap a layer of non-conductive material around the cable conductor, such as: resin, plastic, silicone rubber, PVC, etc., but these materials are limited by their essential properties, and their heat resistance and insulation properties are relatively weak . [0004] Among the relevant patents that have been applied in China, the patent "A Flame Retardant Tensile Flexible Cable" (application number: ...

Claims

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Application Information

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IPC IPC(8): H01B7/295H01B13/00
CPCH01B7/295H01B13/00
Inventor 何琳
Owner 安庆横电电缆有限公司