Intelligent flexible electric heating system and preparation method thereof

Abstract

The invention discloses an intelligent flexible electric heating system and a preparation method thereof. The intelligent flexible electric heating system at least comprises a carbon material composite film, a flexible conductive electrode, a heat conduction film and a surface flexible base material. The flexible electric heating system prepared through the composite preparation method of the carbon material composite film and other functional films has excellent electric heating performance, meanwhile, the defects that some existing electric heating pieces in the prior art are hard in texture, obvious in foreign body sensation, poor in air permeability and the like are overcome, and the flexible electric heating system has excellent heating efficiency, bending resistance, water washing resistance and the like; through a punching structure under the same power consumption, the heat-collecting effect can be reduced, a larger heat release area can be obtained and the resistance, the heating area, the heating temperature and other designs can be adjusted at will, and the system has great cost advantage and economic benefit.

Description

technical field [0001] The invention relates to the field of H05B3 / 02 classified by IPC, in particular to an intelligent flexible electric heating system and a preparation method thereof. Background technique [0002] Heat sources play an important role in people's production, life and scientific research. A surface heat source is a type of heat source. The surface heat source is a two-dimensional structure, and the object to be heated is placed above the two-dimensional structure to heat the object. Therefore, the surface heat source can heat all parts of the object to be heated at the same time, with a large heating surface, uniform heating and high efficiency. Surface heat sources have been successfully used in industrial fields, scientific research fields, or living fields, such as electric heaters, electric blankets, infrared therapeutic devices, and electric heaters. [0003] In recent years, surface heat source systems in the field of textiles have become more and m...

AI Technical Summary

Problems solved by technology

However, some surface heating systems prepared in the prior art still have more technical problems. For example, the wire-mounted heating element surface heat source uses fiber fabric as a flexible bearing matrix, and the carbon fiber or metal fiber heating element is fixed by sewing or bonding. On the supporting substrate, two layers of flexible substrate sandwich a sandwich structure of a heating element, but its thickness is relatively large and its texture is hard, the ratio of the heating area to the product area is very small, and it is not resistant to bending; the carbon nanotube two-dimensional material surface The heating system uses fiber fabric as a flexible carrier substrate, and the heating element is fixed on the carrier substrate by hot-melt adhesive compounding. The sandwich structure of the heating element sandwiched between two layers of flexible substrates forms an electric heating system, but it relies on carbon nanotubes The van der Waals force of two-dimensional materials is combined layer by layer, the electric heating sheet has poor washing and rubbing performance, and the preparation process requires high temperature and high-risk gas environment, the cost is high, and it is difficult to enlarge the heating area; graphene slurry surface heating system , use PET or PI sheet as the carrier substrate, graphene conductive paste is printed on the carrier substrate, two layers of substrate sandwich a layer of heating element sandwich structure, but because the PET or PI sheet material is relatively hard, it can only be bent but not folded , rubbing, washing, etc., poor flexibility and comfort

[0004] However, some electric heating systems in the prior art cannot achieve uniform heating in a large area due to the performance of the internal electric heating elements, and the heating area is small, and it is prone to alternating cold and hot phenomena.

These problems have a great negative impact on the application environment, field and corresponding product quality of the flexible electric heating system.

[0005] For example, the prior art (CN201610013179.3) provides a thick-film heating element with double-sided high thermal conductivity. In the application, the materials of the covering layer, thick-film coating and carrier are selected, and by satisfying a certain three-layer structure The heat transfer rate improves the heat transfer efficiency of the electric heating system and solves the safety problem of leakage, and has the ability to conduct heat on both sides, but it cannot effectively expand the heating area of ​​the electric heating heating element, thus having a more efficient heating Thermal efficiency, with a large heating area in the case of a low heating element area, which effectively provides the applicability of the electric heating system in fabrics

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