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Security type self-temperature-limiting heat tracing band free of scald by boiling water and manufacturing device and manufacturing method thereof

A self-limiting temperature tracing tape, safety technology, applied in the direction of heating element shape, heating element material, etc., can solve the problems of contact interface damage between metal electrode and PTC heating element, low temperature level, and decreased insulation performance, so as to prevent short circuit. Failure and probability of causing fire, improvement of anti-aging properties, effect of improving anti-aging properties

Active Publication Date: 2013-04-24
王崇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a safe self-limiting temperature heating cable that is not scalded by boiling water and its manufacturing device and method. Poor heat resistance, the highest temperature rating is low, it will be scalded by boiling water during use, after working for a period of time, the contact interface between the metal electrode and the PTC heating element is prone to damage, resulting in ignition, which increases the starting current; insulation performance Falling, the shrinkage of the insulation layer causes leakage short circuit, fire, and the leakage protection switch cannot trip and cannot cut off the power supply in time, resulting in fire and other problems

Method used

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  • Security type self-temperature-limiting heat tracing band free of scald by boiling water and manufacturing device and manufacturing method thereof
  • Security type self-temperature-limiting heat tracing band free of scald by boiling water and manufacturing device and manufacturing method thereof
  • Security type self-temperature-limiting heat tracing band free of scald by boiling water and manufacturing device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098]A safe self-limiting temperature heating cable that is not scalded by boiling water. The structure of the heating cable is made of plastic conductors, which are made of conductive plastic coated on metal busbars; a PTC heating element is constructed between two plastic conductors Form a parallel circuit heating element; the plastic conductor and the plastic heating element form a molecular structure contact; the base material of the plastic conductor is polypropylene (PP), and the plastic conductor formula is calculated by weight: polypropylene (PP) / EPDM (65 / 35) 100 parts, acetylene carbon black 60 parts, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 0.2 parts, tris(2,4-di-tert 0.3 parts of butylphenyl) phosphite, 0.6 parts of trimethylolpropane trimethacrylate, 0.1 parts of N-salicylamidophthalimide, and 5 parts of zinc oxide ZnO.

[0099] The heating element is made of functional polymer materials with positive temperature coefficient...

Embodiment 2

[0113] A safe self-limiting temperature heating cable that is not scalded by boiling water. The structure of the heating cable is made of plastic conductors, which are made of conductive plastic coated on metal busbars; a PTC heating element is constructed between two plastic conductors Form a parallel circuit heating element; the plastic conductor and the plastic heating element form a molecular structure contact; the base material of the plastic conductor is made of high-density polyethylene (HDPE), and the formula is calculated by weight: high-density polyethylene (HDPE) / thermoplastic elastomer 100 parts of POE (65 / 35), 80 parts of acetylene carbon black, 0.4 parts of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, tris(2,4-di 0.5 parts of tert-butylphenyl) phosphite, 1.0 parts of trimethylolpropane trimethacrylate, 0.1 parts of N-salicylamidophthalimide, 5 parts of zinc oxide ZnO.

[0114] The heating element is made of polymer functional ...

Embodiment 3

[0128] A safe self-limiting temperature heating cable that is not scalded by boiling water. The structure of the heating cable is made of plastic conductors, which are made of conductive plastic coated on metal busbars; a PTC heating element is constructed between two plastic conductors Form a parallel circuit heating element; the plastic conductor and the plastic heating element form a molecular structure contact; the base material of the plastic conductor is polypropylene (PP), and the plastic conductor formula is calculated by weight: polypropylene (PP) / EPDM (65 / 35) 100 parts, 70 parts of acetylene carbon black, 0.3 parts of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, tris(2,4-di-tert 0.4 parts of butylphenyl) phosphite, 0.8 parts of trimethylolpropane trimethacrylate, 0.1 parts of N-salicylamidophthalimide, and 5 parts of zinc oxide ZnO.

[0129] The heating element is made of polymer functional material with positive temperature coeff...

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Abstract

The invention relates to a security type self-temperature-limiting heat tracing band free of a scald by boiling water and a manufacturing device and a manufacturing method of the security type self-temperature-limiting heat tracing band free of the scald by the boiling water. A multi-component base stock system is adopted, metal buses are coated with plastic conductors, a positive temperature coefficient (PTC) heating element is coated between the two plastic conductors to form a parallel circuit heating element, the PTC heating element is coated with an insulating layer, the insulating layer is coated with a grounding grid, and the grounding grid is coated with an anticorrosion protective sleeve. The three layers including the plastic conductors, the PTC heating element layer and the insulating material layer are formed by extrusion collectively once by the adoption of a two-core and three-layer common extrusion process, and the plastic conductors, the PTC heating element layer and the insulating layer are integrated to form molecular structure contact. Hidden danger causing a fire disaster is prevented, using safety of products is ensured, stability of the working temperature and the power in use is improved, the material formulation of the plastic conductors, the PTC heating element layer and the insulating layer is improved by a large margin, the base stocks of which the bearing temperature are over 115 DEG C are selected, so that the plastic conductors, the PTC heating element layer and the insulating layer are enabled to work when soaked in the boiling water, and the security type self-temperature-limiting heat tracing band free of the scald by the boiling water is suitable for industrial application.

Description

technical field [0001] The invention relates to an electric heating material and a manufacturing process, in particular to a safe self-limiting temperature heating cable which is not scalded by boiling water and a manufacturing device and method thereof, belonging to the field of special electric wires and cables. Background technique [0002] Self-limiting heating cables are used for anti-coagulation and anti-freezing in industry and civil use, and self-limiting heating cables are generally used in solar water heaters to prevent freezing of hot water pipes in winter. Self-limiting heating cables for solar thermal utilization are the most widely used category in the application field of self-limiting heating cables. my country is the world's largest user and producer of solar water heaters. In northern my country, the winter temperature is generally lower than 0°C, and the use of solar water heaters must be antifreeze. Therefore, the use of self-limiting temperature heatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/56H05B3/10H05B3/12B29C47/56B29C47/78B29C48/21B29C48/49
CPCB29C48/49B29C48/21
Inventor 王崇
Owner 王崇
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