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Conductive composite material and preparation method thereof

A technology of conductive composite materials and raw materials, applied in the field of polymer-based PTC heat-generating conductive composite materials and their preparation, can solve the problems of low stability, low PTC strength, wide room temperature resistance distribution, etc., achieve high PTC stability, increase the use of The effect of stable life and PTC characteristics

Inactive Publication Date: 2013-09-18
ANBANG ELECTRICAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current organic PTC materials mainly use graphite and carbon black as conductive fillers, which mainly have problems such as wide room temperature resistance distribution, low PTC strength, and low stability.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] A conductive composite material made of the following raw materials in parts by weight (kg): linear low-density polyethylene 110, ethylene-acrylic acid copolymer 10, copper powder 18, graphite 20, aluminum nitride 20, medical stone powder 35, carbonized Tungsten 6, Antimony Trioxide 5, Talc 10, Bismaleimide 3, Anilinomethyltriethoxysilane 5, Zinc Stearate 2, Glycerin Triacetate 5, Hydroquinone 2.

[0010] The preparation method comprises the following steps: adding water and stirring the talc powder to make a suspension, adding antimony trioxide and medical stone powder, dispersing at high speed for 20-30 minutes, heating to 80-95°C, adding graphite and aluminum nitride , anilinomethyltriethoxysilane, stirred for 15-20 minutes; ground for 1-2 hours, to the slurry, spray-dried to obtain powder; ethylene-acrylic acid copolymer, copper powder, tungsten carbide at 80-120 ° C Knead for 10-15 minutes to obtain a mixture; mix linear low density polyethylene, the obtained powde...

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Abstract

The invention discloses a conductive composite material. The conductive composite material is characterized by being prepared from the following raw materials in parts by weight: 100-110 parts of linear low-density polyethylene, 10-12 parts of ethylene-acrylic acid copolymer, 15-18 parts of copper powder, 20-30 parts of graphite, 15-20 parts of aluminum nitride, 30-35 parts of maifanite powder, 3-6 parts of wolfram carbide, 5-8 parts of antimony trioxide, 10-12 parts of talcum powder, 2-3 parts of bismaleimide, 5-7 parts of aniline methyl triethoxysilane, 2-4 parts of zinc stearate, 4-5 parts of glycerol triacetate and 1-2 parts of hydroquinone. The conductive composite material and the preparation method thereof have the advantages that the PTC strength and PTC stability of the material are improved greatly, the resistance is stable, the temperature is uniform, the PTC characteristic is stable, and the service life of the material is prolonged.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a polymer-based PTC heating and conducting composite material and a preparation method thereof. Background technique [0002] PTC polymer heating materials are widely used in communication, computer, automobile, industrial control, household appliances and many other fields as overheating, overcurrent protection and self-control heating materials. The current organic PTC materials mainly use graphite and carbon black as conductive fillers, which mainly have problems such as wide distribution of room temperature resistance, low PTC strength, and low stability. Contents of the invention [0003] The object of the present invention is to provide a conductive composite material and a preparation method thereof, which have low room temperature resistivity, long-term flow stability, high PTC strength and high PTC stability. [0004] Technical scheme of the present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K13/02C08K3/08C08K3/04C08K3/28C08K3/14C08K3/34C08K3/22C08K5/3415C08K5/544C08K5/103C08K5/098C08K5/13
Inventor 李贻连
Owner ANBANG ELECTRICAL GRP