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Heating film material with PTC effect and preparation method thereof

A technology for heating films and film materials, applied in heating element materials, ohmic resistance heating, electric heating devices, etc., can solve the problems of local temperature rise, uneven mixing, unstable performance, etc., and achieve adjustable temperature coefficient and simple method. Ease of implementation and increased controllability

Active Publication Date: 2022-05-24
浙江汉纳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the temperature control of floor heating can only be controlled through the external circuit system, but the surface temperature of the heating material cannot be monitored. When the heat dissipation of the heating material is poor and heat accumulation occurs, the local temperature rises, which is prone to fire hazards
[0004] At present, polymer materials with PTC are mostly composed of high-density polyethylene, low-density polyethylene, and other additives. Since polyethylene is solid, the processing process needs to be carried out in a molten state, and the components are purely physically mixed, and the interface bonding is poor. , uneven mixing, unstable performance

Method used

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  • Heating film material with PTC effect and preparation method thereof
  • Heating film material with PTC effect and preparation method thereof
  • Heating film material with PTC effect and preparation method thereof

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preparation example Construction

[0020] One aspect of the embodiments of the present invention provides a method for preparing a heating film material with PTC effect, comprising the following steps:

[0021] The conductive material and the PTC additive are respectively mixed with the solvent to form the conductive material dispersion and the PTC additive dispersion;

[0022] uniformly mixing the conductive material dispersion with the PTC additive dispersion to form a mixed solution;

[0023] removing the solvent in the mixed solution to obtain PTC-coated conductive material particles;

[0024] calcining the PTC-coated conductive material particles in an inert atmosphere at 300-500° C. for 1-3 hours to obtain a PTC-coated conductive material;

[0025] preparing the PTC-coated conductive material with polymer resin, solvent, dispersant and coupling agent to form a uniform slurry;

[0026] The slurry is formed into a film material and compounded with a base film.

[0027] Further, the PTC-coated conductive ...

Embodiment 1

[0059] 10 parts of carbon nanotubes (if not otherwise specified below, they are all parts by weight), 1.5 parts of dispersant KV01, 0.5 parts of surfactant LAS, and 38 parts of ethanol are fully ground, stirred and dispersed to make a 20wt% dispersion; 5 parts of nano-SiO 2 , 5 parts BaTiO 3 Powder, 1.5 parts of dispersant KV01, 0.5 part of surfactant LAS, and 88 parts of ethanol were fully ground, stirred and dispersed to make a 10wt% dispersion; then 100 parts of each of the two dispersions were mixed, and 0.5 part of surface active After mixing uniformly, the solution volatilized to form PTC-coated conductive material particles with a conductive material of 66 wt%, which was ground and calcined at 300-500 °C for 1-3 hours in a nitrogen atmosphere to form PTC-coated conductive material for use. 10 parts of PTC coated conductive material, 2 parts of dispersant KV01, 1 part of KH560 silane coupling agent, 30 parts of ethanol are fully ground, stirred and dispersed, and then m...

Embodiment 2

[0062] By fully grinding, stirring and dispersing 8 parts of graphene, 1.4 parts of dispersant KV01, 0.6 parts of surfactant LAS, and 40 parts of ethanol to make a 16wt% dispersion; 4 parts nano TiO 2 , 4 parts BaTiO 3 Powder, 1.5 parts of dispersant KV01, 0.5 parts of surfactant LAS, and 90 parts of ethanol were fully ground, stirred and dispersed to make a dispersion liquid of 8wt%; then 100 parts of each of the two dispersion liquids were mixed, and 0.5 part of surface active agent was added After mixing uniformly, the solution volatilized to form PTC-coated conductive material particles with a conductive material of 62 wt%, which was ground and calcined at 300-400°C for 1-3 hours in an inert atmosphere to form PTC-coated conductive material for use. 15 parts of PTC coated conductive material, 2.5 parts of dispersant KV01, 0.5 part of KH560 silane coupling agent, and 30 parts of ethanol are fully ground, stirred and dispersed, and then mixed with 52 parts of polyester resi...

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Abstract

The invention discloses a heating film material with PTC effect and a preparation method thereof. The preparation method comprises the steps of: mixing the conductive material and the PTC additive with a solvent respectively to form a conductive material dispersion and a PTC additive dispersion; uniformly mixing the conductive material dispersion with the PTC additive dispersion to form a mixed solution; removing the Solvent in the mixed solution to obtain PTC-coated conductive material particles; calcining the PTC-coated conductive material particles at 300-500°C for 1-3h in an inert atmosphere to obtain PTC-coated conductive materials; The coated conductive material is blended with polymer resin, solvent, dispersant and coupling agent to form a uniform slurry; the slurry is made into a film material and compounded with the base film. The method of the invention is simple and easy to implement, and has good controllability, and the temperature coefficient of the prepared heating film material with PTC effect can be adjusted, which increases the controllability and safety of the application of the heating film material, and is suitable for large-scale production and application.

Description

technical field [0001] The invention particularly relates to a heating film material with PTC effect and a preparation method thereof, belonging to the technical field of heating film materials. Background technique [0002] With the gradual emergence of the energy crisis in the new century, the concept of low-carbon and environmentally friendly life has gradually penetrated into all aspects of life. Compared with traditional heating methods, electric floor heating does not require boiler rooms, coal storage, ash stacking, pipe networks and other facilities, and does not generate Waste gas, waste water, waste and other pollutants. In addition, electric floor heating has no heat transfer pipe network, which avoids energy loss during heat transfer. Therefore, electric floor heating is the general trend to replace other heating methods. [0003] In recent years, carbon fiber electric floor heating and carbon crystal heating film electric floor heating have been gradually deve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/10
CPCH05B3/10H05B2203/017Y02B30/00
Inventor 陈新江其他发明人请求不公开姓名
Owner 浙江汉纳新材料科技有限公司
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