PTC (Positive Temperature Coefficient) macromolecular composite heating material based on iron and copper powder and preparation method thereof

A heating material and polymer technology, which is applied in the field of polymer-based PTC heating materials and its preparation, can solve the problems of low PTC strength, wide room temperature resistance distribution, and low stability, and achieve increased service life, stable PTC characteristics, and high Effect of PTC stability
CN103304873AInactive Publication Date: 2013-09-18ANBANG ELECTRICAL GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ANBANG ELECTRICAL GRP
Publication Date
2013-09-18
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a PTC (Positive Temperature Coefficient) macromolecular composite heating material based on iron and copper powder. The PTC macromolecular composite heating material is prepared from the following raw materials in parts by weight: 20-30 parts of polycaprolactam, 50-55 parts of low-density polyethylene, 20-25 parts of iron powder, 10-15 parts of copper powder, 20-25 parts of aluminum nitride, 10-15 parts of maifanite powder, 3-5 parts of decabromodiphenyl ethane, 10-12 parts of silica, 4-6 parts of zinc fluoride, 12-14 parts of argil, 4-6 parts of methyl triethoxysilane, 3-4 parts of N-(beta-aminoethyl)-gamma-aminopropyl trimeth(eth)oxysilane, 5-6 parts of epoxy tetrahydro-dioctyl phthalate and 1-2 parts of sodium dihydrogen phosphate. The PTC macromolecular composite heating 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.
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Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a polymer-based PTC heating 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 purpose of the present invention is to provide a PTC polymer heating material based on iron powder and copper powder and its preparation method, which has low room temperature resistivity, long-term stable flow performance, high PTC strength and high PTC stability .

[0004] Technical scheme of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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