Carbon fiber heating piece and preparation method thereof

Abstract

The invention discloses a carbon fiber heating piece and a preparation method thereof. The carbon fiber heating piece comprises electrode leads, and a lower insulated coating layer, a carbon fiber layer in a net-shaped structure, electrode current-carrying bars and an upper insulated coating layer which are arranged from bottom to top, wherein the electrode current-carrying bars are arranged at two ends of the carbon fiber layer, and the electrode current-carrying bars are electrically connected with an external power source through the electrode leads. The preparation method comprises the following steps: carbon fiber wires are distributed on the lower insulated coating layer to form the carbon fiber layer in the net-shaped structure, the electrode current-carrying strips are pressed on two ends of the carbon fiber layer, the upper insulated layer is laid, and after bonding treatment, the electrode leads are welded at the corresponding two ends of the electrode current-carrying bars. The preparation process of the heating piece is simple, the production cost is low, and the net-shaped carbon fiber wire structure formed by a plurality of specially arranged diamond lattices has the advantages of simple structure, strong reliability, small difference between heated zones, large heating area and the like. The carbon fiber heating piece is suitable for being applied in the fields of heating and health care of far-infrared radiation.

Description

technical field [0001] The invention relates to the technical field of sheet heaters, in particular to a carbon fiber heating sheet and a preparation method thereof. Background technique [0002] Since sheet heaters can control their temperature without polluting the air and making noise, sheet heaters are widely used in heating mats, heating pads, heating quilts, heating blankets, and heating systems for houses and apartments; Widely used in heating systems for commercial, industrial, public, military and agricultural facilities, such as: anti-freezing and snow-melting systems for roads and parking lots, heated products for leisure and anti-cold, anti-fog systems for mirrors and window panes, and health aids system etc. Traditional sheet heaters usually use Nichrome wire as the heating source, however, since the entire current is carried by a single continuous wire, any disconnection of the entire Nichrome wire will make the entire sheet heater inoperable ; In addition, b...

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Problems solved by technology

Through the search of existing documents, it is found that the invention patent with the authorized announcement number of CN 1247047C discloses a heating paper embedded with carbon fibers and a sheet heater thereof. The heating paper is made of heat-conducting ceramic fibers, ceramic powder or a mixture thereof As a heat conduction medium, it is dispersed together with carbon fiber to achieve uniform temperature, but it has problems such as complicated preparation process and high production cost; the utility model patent with the authorized announcement number of CN 202334939U discloses a low-voltage heating device for medical facilities, wherein The carbon fiber heating sheet used is composed of activated carbon fiber heating element, which is woven from carbon fiber and 100% cotton fiber. It has high strength, high temperature resistance, fatigue resistance, electrical conductivity, and thermal conductivity. However, it also has the preparation process Complexity, high production cost, etc.

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