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Super chemical resistant self-temperature-limiting heat tracing cable

A temperature tracing and quality technology, applied in the field of self-limiting temperature tracing cables with super chemical resistance, can solve the problems of poor performance stability and low PTC strength, achieve good insulation performance, good compatibility, and improve efficiency Effect

Inactive Publication Date: 2016-10-12
ZHONGKE ELECTRIC POWER EQUIP ANHUI INTELLIGENT TECH CO LTD
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  • 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 super chemical-resistant self-limiting temperature heating cable, 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 composed of two parallel Arranged heating wires and a PTC material layer coated outside; the PTC material is made of the following raw materials in parts by weight (kg): polypropylene 30, lead-silver alloy powder 4, silane coupling agent kh5700.3 , zinc stearate 0.2, carbon fiber 13, carboxylated nitrile powder rubber 9, polypyrrole microspheres 9, silica microspheres 6, thermoplastic polyurethane elastomer 22, high-density polyethylene 50, antioxidant 10100.5, deionized water Appropriate amount.

[0013] The super chemical-resistant self-limiting temperature heating cable is prepared by the following specific steps:

[0014] (1) After the carbon fiber is chopped, it is added to absolute ethanol to prepare a disper...

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PUM

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Abstract

The invention discloses a super chemical resistant self-temperature-limiting heat tracing cable. The super chemical resistant self-temperature-limiting heat tracing cable comprises a PTC core belt, as well as an insulating layer, a metal shielding layer and a wear-resistant sheath layer which are wrapped outside the PTC core belt in sequence, wherein the PTC core belt is composed of two heating wires arranged in parallel and a PTC material layer wrapped outside the heating wires. The heat tracing cable prepared by the invention has higher insulating property, corrosion resistance, flame retardant property and mechanical property, is simple in preparation technology, and is applicable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a super chemical-resistant self-limiting temperature heating cable. 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 changes wit...

Claims

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Application Information

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IPC IPC(8): H05B3/56H01B7/18H01B7/28H01B7/295H01B7/02
CPCH01B7/02H01B7/18H01B7/2806H01B7/295H05B3/56
Inventor 王小飞朱海南朱国银胡小龙周银生
Owner ZHONGKE ELECTRIC POWER EQUIP ANHUI INTELLIGENT TECH CO LTD
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