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Composite type polymer thermistor

A thermistor and polymer technology, applied in thermistors, resistors, non-adjustable metal resistors, etc., can solve the problems of poor resistance reproducibility, resistance rise, easy oxidation, etc., and achieve enhanced electronic conductivity , reduce the impedance, reduce the effect of the degree of mismatch

Active Publication Date: 2014-02-19
THINKING ELECTRONIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, if nickel is not tightly protected and insulated from air, it will be easily oxidized after a period of time, resulting in an increase in resistance.
In addition, after the conductive composite material is tripped, its resistance reproducibility is not good

Method used

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  • Composite type polymer thermistor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A composite polymer thermistor, comprising a PTC composite material as an intermediate layer and a composite copper-plated foil coated on the surface of the PTC composite material, the PTC composite material includes at least one crystalline polymer; At least one TiC highly conductive nanoparticle powder with a particle size of 40nm and one TiC conductive microparticle powder with a particle size of 5μm are uniformly distributed in the crystalline high molecular polymer; the TiC highly conductive nanoparticle with a particle size of 40nm The mass ratio of the powder to the TiC conductive micron particles with a particle size of 5 μm is 0.1:9.9. The crystalline high molecular polymer is one of high density polyethylene or low density polyethylene or a combination thereof.

[0014] The composite copper-plated foil is a TiC / Ni composite copper-plated foil; it includes a TiC coating; the TiC coating is formed by an electroplating method; the size of TiC particles in the TiC co...

Embodiment 2

[0017] A composite polymer thermistor, comprising a PTC composite material as an intermediate layer and a composite copper-plated foil coated on the surface of the PTC composite material, the PTC composite material includes at least one crystalline polymer; At least one TiC highly conductive nanoparticle powder with a particle size of 40nm and one TiC conductive microparticle powder with a particle size of 5μm are uniformly distributed in the crystalline high molecular polymer; the TiC highly conductive nanoparticle with a particle size of 40nm The mass ratio of the powder to the TiC conductive micron particles with a particle size of 5 is 0.5:9.5. The crystalline high molecular polymer is one of high density polyethylene or low density polyethylene or a combination thereof.

[0018] The composite copper-plated foil is a TiC / Ni composite copper-plated foil; it includes a TiC coating; the TiC coating is formed by an electroplating method; the size of TiC particles in the TiC coati...

Embodiment 3

[0021] A composite polymer thermistor, comprising a PTC composite material as an intermediate layer and a composite copper-plated foil coated on the surface of the PTC composite material, the PTC composite material includes at least one crystalline polymer; At least one TiC highly conductive nanoparticle powder with a particle size of 40nm and one TiC conductive microparticle powder with a particle size of 5μm are uniformly distributed in the crystalline high molecular polymer; the TiC highly conductive nanoparticle with a particle size of 40nm The mass ratio of the powder to the TiC conductive micron particles with a particle size of 5 is 1:9. The crystalline high molecular polymer is one of high density polyethylene or low density polyethylene or a combination thereof.

[0022] The composite copper-plated foil is a TiC / Ni composite copper-plated foil; it includes a TiC coating; the TiC coating is formed by an electroplating method; the size of TiC particles in the TiC coating i...

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Abstract

The invention relates to a composite type polymer thermistor which comprises a PTC (positive temperature coefficient) composite material as an interlayer and a composite plating copper foil coated on the surface of the PTC composite material; the PTC composite material comprises at least one crystallized high molecular polymer; at least one TiC high-conductivity nanoparticle with particle size ranging from 1 nm to 50 nm and at least one conductive micron particle with particle size ranging from 0.1 mu m to 10 mu m are uniformly distributed in the crystallized high molecular polymer; and the mass ratio of the TiC high-conductivity nanoparticle with the particle size ranging from 1 nm to 50 nm and the TiC conductive micron particle with the particle size ranging from 0.1 mu m to 10 mu m is (0.1-1):(9-9.9). According to the composite type polymer thermistor, TiC nanoparticles with sizes ranging from 1 nm to 50 nm are added into the crystallized high molecular polymer and can play a role in enhancing the electron conduction capability among TiC conductive micron particles with sizes ranging from 0.1 mu m to 10 mu m; and the composite type polymer thermistor has excellent high-temperature cycling stability.

Description

Technical field [0001] The invention relates to a thermistor, in particular to a composite polymer thermistor made of a polymer-based / nano-TiC reinforced filling type PTC composite material and a TiC / Ni composite copper-plated foil. Background technique [0002] TIC powder-filled polymer-based PTC composite material has become one of the preferred base materials for the development of ultra-low resistance eddy current protection components due to its low impedance, high temperature resistance and excellent aging resistance. [0003] Data shows that polymer-based inorganic nanocomposites not only have the surface effects and quantum size effects of nanomaterials, but also can combine the rigidity, dimensional stability and thermal stability of inorganic substances with the toughness, processability and dielectric properties of polymers. The properties are combined to produce many peculiar properties. At present, organic-based nanocomposites composed of nanomaterials as the disperse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/02C08L23/06C08K3/14
CPCH01C7/027H01C7/008Y10T428/256
Inventor 王海峰
Owner THINKING ELECTRONIC IND CO LTD