High-temperature resistance PTC polymer conductive material and preparation method thereof

A high-molecular conductive and high-temperature-resistant technology, which is applied in the treatment of dyed low-molecular organic compounds and fibrous fillers, can solve the problems of unstable resistance of PTC heating materials, low tensile strength performance, and shortened service life of materials. , to achieve the effect of low price, stable resistance and extended service life

Active Publication Date: 2013-10-02
容赞电子科技(上海)有限公司
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Problems solved by technology

[0002] Electric heating cable is a new type of high-tech product. PTC polymer material for heating is distributed between two conductive cores. Its exterior is composed of polymer inner sheath, metal shielding net and polymer outer sheath. PTC high Molecular materials have been widely used in the field of modern electronics and electrical; at present, due to the limitation of processing conditions and environmental condit

Method used

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Examples

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Example Embodiment

[0014] Example 1: High temperature resistant PTC polymer conductive material, the weight parts (kg) of its constituent raw materials are: metallocene polyethylene 38, furan resin 45, methyl tributyl ketoxime silane 24, straw ashes 22, modified Mongolia Stone removal powder 5.0, carbon fiber 3.8, N,N'-m-phenylene bismaleimide 1.1, antioxidant ODA 1.5, antioxidant DLTP 2.2, 2-(carboxyethyl)triphenylphosphonium chloride 9.0 and fat Alcohol polyoxyethylene ether 3.0.

[0015] The preparation method of high temperature resistant PTC polymer conductive material includes the following steps:

[0016] (1) Preparation of modified montmorillonite powder:

[0017] a: Weigh 14kg of montmorillonite powder, 5.2kg of iron powder, 2.2kg of loess, 16kg of straw powder, 7.5kg of nanometer titanium dioxide and 2.2kg of copper powder according to the weight of the raw materials; mix well, calcinate for 2-3 hours, control the temperature 550℃, cool for use;

[0018] b: Add 5.5kg of aluminum nitride, 3.8...

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Abstract

The invention discloses a high-temperature resistance PTC polymer conductive material and a preparation method thereof. The material comprises following composition raw materials: metallocene polyethylene, furan resin, methyltrissilane, straw ash, modified montmorillonite powder, carbon fiber, N,N'-phenylenedimaleimide, anti-aging agent ODA, anti-oxidant DLTP, 2-(carboxyethyl)-triphenyl phosphonium chloride, and fatty alcohol polyoxyethylene ether. The method adopts metallocene polyethylene and furan resin as the main materials, which are cheap in price, and adds modified montmorillonite powder, carbon fiber, and straw ash as the auxiliary materials to improve elasticity modulus of the PCT polymer conductive material and increase the maximum stress and the breaking point stress, therefore the stretch resistance performance of the PTC polymer material is improved, furthermore, the resistance of the material is stable, the temperature of the material is homogenous, so that the service life of the material is prolonged.

Description

technical field [0001] The invention relates to the field of heat tracing cables, in particular to a high-temperature-resistant PTC polymer conductive material and a preparation method thereof. Background technique [0002] Electric heating cable is a new type of high-tech product. PTC polymer material for heating is distributed between two conductive cores. Its exterior is composed of polymer inner sheath, metal shielding net and polymer outer sheath. PTC high Molecular materials have been widely used in the field of modern electronics and electrical; at present, due to the limitation of processing conditions and environmental conditions in the production of electric heating cables in China, the tensile strength of the product is not high, and the crystallization behavior of the product is unstable and the crystallization is not stable. Perfect, and the residual thermal stress inside the PTC heating material will make the resistance of the PTC heating material unstable,...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L61/00C08L97/02C08K13/06C08K3/34C08K7/06C08K3/04C09C1/42C09C3/08
Inventor 谷道荣
Owner 容赞电子科技(上海)有限公司
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