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Polymer-based conductive heat tracing cable with high heat stability

A high thermal stability, polymer-based technology, applied in the shape of heating elements, etc., can solve the problems of low strength and poor performance stability of PTC, and achieve good hydrophobicity, high thermal stability, good strength and elongation at break. Effect

Inactive Publication Date: 2016-09-28
ANBANG ELECTRICAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, polymer-based PTC materials and polymer heating cables still have defects such as poor performance stability and low PTC strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A polymer-based conductive heating cable with high thermal stability, including a PTC core strip, which is sequentially coated with an insulating layer, a metal shielding layer and a wear-resistant sheath layer outside the PTC core strip. The PTC core strip is arranged in parallel by two The heating wire and the PTC material layer covering it; the PTC material is made of the following raw materials in parts by weight (kg): polypropylene 30, tin-bismuth alloy powder 4, sodium tripolyphosphate 0.3, titanium carbide 13. Carboxylated nitrile powder rubber 9, potato starch 4, sodium linoleate 2, aluminum stearate 0.5, graphite oxide 8, kaolin 6, sodium trimetaphosphate 1.3, crosslinking agent TAC0.1, nylon 25, polyphenylene Sulfide 12, high-density polyethylene 44, deionized water in proper amount.

[0013] The high thermal stability polymer-based conductive heat tracing cable is prepared by the following specific steps:

[0014] (1) Add potato starch to cold deionized wate...

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Abstract

The invention discloses a polymer-based conductive heat tracing cable with high heat stability. The polymer-based conductive heat tracing cable comprises a PTC core belt, an insulating layer, a metal shielding layer and an anti-abrasion jacket layer. The PTC core belt is sequentially covered with the insulating layer, the metal shielding layer and the anti-abrasion jacket layer. The PTC core belt is composed of two parallel heating wires and a PTC material layer covering the heating wires. The prepared heat tracing cable material is good in flame retardance and antioxidation effect, high in heat stability, resistant to scratches and folding, good in flexibility and machinability and worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a polymer-based conductive heat tracing cable with high thermal stability. Background technique [0002] Heat tracing cables are widely used in many fields. For example, in industry, they are mainly used in petroleum, chemical, thermal power plants and other places where liquid substances in pipelines or tanks need to be prevented from solidifying / slow flow. In public facilities, they are mainly used as companions for fire-fighting pipelines. It can be used for indoor heating and anti-freezing of outdoor pipes in winter in civil applications. The core of the heating cable lies in its structure and the PTC material for making its electric heating element. PTC material refers to a heat-sensitive material whose resistance value increases with the increase of temperature, that is, the resistance or resistivity of the material remains basically unchanged or only slightly chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L77/00C08L23/12C08L13/00C08L3/02C08K13/02C08K3/04C08K3/34C08K5/098C08K3/08H05B3/56
CPCC08L23/06C08L2201/02C08L2201/08C08L2203/202C08L2205/035C08L2207/062H05B3/56C08L77/00C08L23/12C08L13/00C08L3/02C08K13/02C08K3/04C08K3/346C08K5/098C08K3/08
Inventor 李贻连卜基峰姚月凤陈更芬李宏国
Owner ANBANG ELECTRICAL GRP
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