Far-infrared carbon fiber composite heating film

Abstract

The invention relates to a far-infrared carbon fiber composite heating film, which comprises an upper base layer, a lower base layer, a carbon fiber composite heating layer, an upper insulated flame-retardant and heat-resistant waterproof layer and a lower insulated flame-retardant and heat-resistant waterproof layer, wherein the carbon fiber composite heating layer is located between the upper base layer and the lower base layer; and the upper insulated flame-retardant and heat-resistant waterproof layer and the lower insulated flame-retardant and heat-resistant waterproof layer coat the outer sides of the upper base layer and the lower base layer, wherein the far-infrared carbon fiber composite heating film is preferably carbon fiber cloth or carbon fiber composite paper. The far-infrared carbon fiber composite heating film is simple in structure, has good flexibility and can be freely cut and folded; the flexibility is not affected in a low-temperature condition; the load resistance deviation does not exceed 8% after a single side is folded for 1,000 times at a speed of 30times / min; the security and the stability are significantly improved; the service life is long; and furthermore, the far-infrared carbon fiber composite heating film has high external insulativity, high-temperature resistance, open fire resistance and waterproofness, the internal conductivity and the heating property are good and the security is high.

Description

technical field [0001] The invention belongs to the field of conductive heating materials, in particular to a far-infrared carbon fiber composite heating film and a preparation method. Background technique [0002] Electrothermal film heating is one of the emerging heating methods in the world. Common electric heating methods include alloy heating wire heating and non-metallic conductive material heating. Among them, alloy heating wire heating is the most traditional, and the heat transfer of metal materials is mainly completed by free electrons. The electric energy conversion efficiency is low, only up to 60% to 70%, the heating wire is easy to break, and the shock resistance is poor; the heat transfer of non-metallic conductive materials such as carbon fiber mainly depends on the vibration and transfer of the crystal lattice, and the heat transfer is mainly in the distance The method of infrared radiation can effectively avoid the occurrence of heat storage and overheating...

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Problems solved by technology

[0004] At present, the far-infrared heating film in the prior art and the heating equipment made of it have the following disadvantages due to the limitations of materials and processes: 1. The hardness is too high, it is difficult to fold, and the load resistance deviation is large after long-term or repeated folding. Therefore, it is more complicated to carry, transport and install, and has a short service life; second, it cannot be cut at will, the size is fixed, and the application range is small; third, the heating uniformity is poor, there are hot spots, and the temperature difference is too large; fourth, far-infrared rays emit Unstable, unable to stabilize the wavelength of far-infrared rays in the most beneficial band for human health, and the emission is small, so it cannot play a role in health care

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