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PTC thermistor core material applied to electric heater

A technology of thermistor and electric heater, used in the manufacture of resistor chips, resistors, resistors with positive temperature coefficient, etc., can solve unstable crystallization behavior, shorten the service life of core materials, and resist stretching The problem of low strength and performance, to achieve the effect of improving the elastic modulus and breaking point stress value, improving the resistance change stability, and enhancing the tensile performance

Active Publication Date: 2016-11-30
ANHUI NINGGUO TIANCHENG ELECTRICAL APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The core component of the PTC electric heater is the PTC thermistor core material. At present, the domestic PTC thermistor core material still adopts the formula of the 1990s, and due to the limitation of processing conditions and environmental conditions in production , so that the tensile strength of the product is not high, and the crystallization behavior of the product is unstable, the crystallization is not perfect, and the residual thermal stress inside the PTC core material will make the resistance of the PTC core material unstable, the temperature rise and fall uneven, The PTC characteristics are unstable and the repeatability of PTC characteristics decreases, which further shortens the service life of the core material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A PTC thermistor core material applied to an electric heater, consisting of the following raw materials in parts by weight: 50 parts of metallocene linear low-density polyethylene, 12 parts of iodine-doped polyacetylene, 6 parts of nano-montmorillonite, coconut oil 1 part of acid diethanolamide, 2 parts of dioctyl epoxy tetrahydrophthalate, 1 part of conductive tin oxide powder, 2 parts of titanium diboride powder, 1 part of copper powder, 1 part of dibutyltin dilaurate, chlorine 1 part of stannous chloride, 3 parts of triethylenetetramine, 0.5 parts of zinc fluoride, 3 parts of p-tert-butylbenzaldehyde, 5 parts of polyethylene glycol 400.

[0020] Its preparation method comprises the following steps:

[0021] S1. Weigh each raw material according to the weight of the constituent raw materials, mix nano-montmorillonite, conductive tin oxide powder, titanium diboride powder, copper powder, stannous chloride and zinc fluoride evenly, and mix them evenly under the conditio...

Embodiment 2

[0025] A PTC thermistor core material applied to an electric heater, consisting of the following raw materials in parts by weight: 50 parts of metallocene linear low-density polyethylene, 10 parts of iodine-doped polyacetylene, 8 parts of nano-montmorillonite, coconut oil 1 part of acid diethanolamide, 4 parts of dioctyl epoxy tetrahydrophthalate, 1 part of electroconductive tin powder, 3 parts of titanium diboride powder, 1 part of copper powder, 2 parts of dibutyltin dilaurate , 1 part of stannous chloride, 4 parts of triethylenetetramine, 0.5 parts of zinc fluoride, 5 parts of p-tert-butylbenzaldehyde, and 3 parts of polyethylene glycol 400.

[0026] Its preparation method comprises the following steps:

[0027] S1. Weigh each raw material according to the weight of the constituent raw materials, mix nano-montmorillonite, conductive tin oxide powder, titanium diboride powder, copper powder, stannous chloride and zinc fluoride evenly, and mix them evenly under the condition ...

Embodiment 3

[0031] A PTC thermistor core material applied to an electric heater, consisting of the following raw materials in parts by weight: 50 parts of metallocene linear low density polyethylene, 16 parts of iodine-doped polyacetylene, 7 parts of nano-montmorillonite, coconut oil 2 parts of acid diethanolamide, 3 parts of dioctyl epoxy tetrahydrophthalate, 2 parts of conductive tin oxide powder, 3 parts of titanium diboride powder, 2 parts of copper powder, 2 parts of dibutyltin dilaurate, chlorine 2 parts of stannous chloride, 4 parts of triethylenetetramine, 1 part of zinc fluoride, 4 parts of p-tert-butyl benzaldehyde, 6 parts of polyethylene glycol 400.

[0032] Its preparation method comprises the following steps:

[0033] S1. Weigh each raw material according to the weight of the constituent raw materials, mix nano-montmorillonite, conductive tin oxide powder, titanium diboride powder, copper powder, stannous chloride and zinc fluoride evenly, and mix them evenly under the condi...

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PUM

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Abstract

The invention relates to the technical field of production of PTC thermistors, in particular to a PTC thermistor core material applied to an electric heater. The core material is prepared from the following raw materials in parts by weight: 50 parts of metallocene linear low-density polyethylene, 10-18 parts of iodine-doped polyacetylene, 5-8 parts of nano-montmorillonite, 1-3 parts of coconut diethanolamide, 1-4 parts of epoxy-tetrahydro-dioctyl phthalate, 1-2 parts of conductive tin oxide powder, 1-3 parts of titanium diboride powder, 1-3 parts of copper powder, 0.5-2 parts of dibutyltin dilaurate, 1-2 parts of stannous chloride, 2-4 parts of triethylene tetramine, 0.5-1 part of zinc fluoride, 2-5 parts of p-tert-butylbenzaldehyde and 3-7 parts of polyethylene glycol 400. The core material provided by the invention is good in resistance stability, uniform in temperature rise and high in tensile strength.

Description

technical field [0001] The invention relates to the technical field of PTC thermistor production, in particular to a core material of a PTC thermistor applied to an electric heater. Background technique [0002] The PTC electric heater is made of PTC ceramic thermistor as the heating element, and the corrugated aluminum strip is bonded with high-temperature adhesive. It is a heating device with compact structure, small size, easy installation, safety and durability. [0003] The core component of the PTC electric heater is the PTC thermistor core material. At present, the domestic PTC thermistor core material still uses the formula of the 1990s, and due to the limitation of processing conditions and environmental conditions in production , so that the tensile strength of the product is not high, and the crystallization behavior of the product is unstable, the crystallization is not perfect, and the residual thermal stress inside the PTC core material will make the resistance...

Claims

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Application Information

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IPC IPC(8): H01C7/02H01C17/00
CPCH01C7/027H01C17/006
Inventor 汪洋陈启志危国慧权惠玲
Owner ANHUI NINGGUO TIANCHENG ELECTRICAL APPLIANCES
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