High-temperature-resistant cable outer sheath layer and preparation method thereof

A technology of outer sheath and high temperature resistance, which is applied to rubber insulators, organic insulators, etc., and can solve problems such as hindering the heat loss of wires and cables, accelerating the aging speed of sheaths, and shortening the life of wires and cables.

Inactive Publication Date: 2018-06-05
WUHU HANGTIAN SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The outer sheath of the wire and cable is mostly insulated, which makes the outer sheath of the cable provide insulation performance while hindering the heat loss inside the wire and cable to a certain extent. The accumulation of heat will accelerate the aging of the sheath, thereby shortening the wire. cable life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The invention provides a method for preparing the outer sheath of a high temperature resistant cable, the preparation method comprising:

[0017] (1) Mixing bentonite, succinic anhydride, fatty alcohol, organic acid and water, centrifugal dehydration and spray drying to obtain filler M; wherein, the spray drying conditions include: the temperature is 150-180°C, and the time is 20-30min;

[0018] (2) The filler M is subjected to the first heat treatment and the second heat treatment respectively to obtain the modified filler M; wherein, the conditions for the first heat treatment include: the temperature is 50-70°C, and the time is 20-30min; The heat treatment conditions include: the temperature is 30-50°C, and the time is 1-2h;

[0019] (3) Mix modified filler M, chloroprene rubber, butanol etherified amino resin, polyvinylidene fluoride, ethyl acetate, cadmium stearate, carbon black, zinc oxide and barium stearate, and get Synthetic rubber;

[0020] (4) Put the blend...

Embodiment 1

[0032] Mix bentonite, succinic anhydride, fatty alcohol, lauric acid and water, centrifugally dehydrate and spray-dry to obtain filler M; wherein, the spray-drying conditions include: the temperature is 150°C, and the time is 20 minutes; the filler M is subjected to the first The second heat treatment and the second heat treatment to obtain the modified filler M; wherein, the conditions of the first heat treatment include: the temperature is 50°C, and the time is 20min; the conditions of the second heat treatment include: the temperature is 30°C, and the time is 1h; The modified filler M (the modified filler M needs to be ground before use, and the average particle diameter of the modified filler M after grinding is 1mm), chloroprene rubber, butanol etherified amino resin, polyvinylidene fluoride, ethyl acetate Ester, cadmium stearate, carbon black, zinc oxide and barium stearate are mixed, banburying (temperature is 60°C, time is 30min.) to obtain compound rubber; put the comp...

Embodiment 2

[0034]Mix bentonite, succinic anhydride, fatty alcohol, lauric acid and water, centrifugally dehydrate and spray-dry to obtain filler M; wherein, the spray-drying conditions include: the temperature is 180°C, and the time is 30 minutes; the filler M is subjected to the first The second heat treatment and the second heat treatment to obtain the modified filler M; wherein, the conditions of the first heat treatment include: the temperature is 70°C, and the time is 30min; the conditions of the second heat treatment include: the temperature is 50°C, and the time is 2h; The modified filler M (the modified filler M needs to be ground before use, and the average particle diameter of the modified filler M after grinding is 4 mm), chloroprene rubber, butanol etherified amino resin, polyvinylidene fluoride, ethyl acetate Esters, cadmium stearate, carbon black, zinc oxide and barium stearate are mixed, banburyed (at a temperature of 90°C, and for 60 min.) to obtain compound rubber; put th...

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Abstract

The invention discloses a high-temperature-resistant cable outer sheath layer and a preparation method thereof. The preparation method comprises the following steps that bentonite, succinyl oxide, fatty alcohol, organic acid and water are mixed; after centrifugal dewatering and spray drying, a filler M is obtained; the filler M is respectively subjected to primary heat treatment and secondary heattreatment to obtain a modified filler M; the modified filler M, neoprene rubber, butylated amino resin, polyvinylidene fluoride, ethyl acetate, cadmium stearate, carbon black, zinc oxide and barium stearate are mixed; after banburying, mixing glue is obtained; the mixing glue is added into a vulcanizing machine; through extrusion vulcanization and hot press molding, the high-temperature-resistantcable outer sheath layer is obtained. The problems that most outer sheath layers of electric wires and cables have heat insulation performance, so that the cable outer sheath layer provides insulation performance; meanwhile, the dissipation of heat inside the electric wires and cables is impeded to a certain degree; the aging speed of the sheath layer can be accelerated due to heat accumulation,so that the service lives of the electric wires and cables are shortened are solved.

Description

technical field [0001] The invention relates to the field of cables, in particular to a high temperature resistant cable outer sheath and a preparation method thereof. Background technique [0002] Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. They are all composed of single or multi-strand wires and insulation layers, and are used to connect circuits, electrical appliances, etc. The outer sheath of the wire and cable is mostly insulated, which makes the outer sheath of the cable provide insulation performance and at the same time hinder the heat loss inside the wire and cable to a certain extent. The accumulation of heat will accelerate the aging of the sheath, thereby shortening the wire. the life of the cable. [0003] Therefore, it is an urgent problem to be solved in the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L61/32C08L27/16C08K13/06C08K9/00C08K9/04C08K3/34C08K3/04C08K3/22C08K5/098H01B3/28
CPCC08K2003/2296C08K2201/003C08K2201/014C08L11/00C08L2201/08C08L2203/202C08L2205/03H01B3/28C08L61/32C08L27/16C08K13/06C08K9/00C08K9/04C08K3/346C08K3/04C08K3/22C08K5/098
Inventor 赵明哲何源程奇代少侠
Owner WUHU HANGTIAN SPECIAL CABLE FACTORY
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