Metal-wire-containing electric heating fabric suitable for severe environment

Abstract

The invention relates to metal-wire-containing electric heating fabric suitable for a severe environment. A main body is formed by spinning yarns, an electric channel formed by metal wires and capable of heating after power is on is arranged in the main body, and various function layers can be arranged on the fabric surface according to requirements. The electric heating fabric has high mechanical performance and electric heating performance, can prevent water effectively, is resistant to high temperature and low temperature, suitable for various severe environments, good in internal electrical conductivity and small in resistance. An electrical characteristic and a heating characteristic of the fabric can be adjusted effectively by adjusting the tensioning degree or compact degree of the fabric. The fabric is suitable for heat preservation and heating of devices under various outdoor situations, especially long-distance electric heating snow removing and ice removing of tracks.

Description

technical field [0001] The invention relates to an electric heating fabric, in particular to an electric heating fabric containing metal wires which can be used in severe environments. Background technique [0002] At present, the common electric heating element is a metal electric heating wire, which can usually adopt a spiral structure, and its outer surface can be wrapped with a fabric sheath for protection and / or insulation. This metal electric heating wire is laid in the middle of the fabric interlayer to form an electric blanket or the like. Flat electric heating products, the defects of this kind of electric heating products are: (1) Since the conduction and heating are concentrated on the heating wire, other parts of the product are not conductive and do not generate heat, so not only the heating is uneven, but also the heating wire itself has a higher calorific value , it is easy to cause local high temperature aging or even burning near the heating wire; (2) Since ...

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Problems solved by technology

[0002] At present, the common electric heating element is a metal electric heating wire, which can usually adopt a spiral structure, and its outer surface can be wrapped with a fabric sheath for protection and / or insulation. This metal electric heating wire is laid in the middle of the fabric interlayer to form an electric blanket or the like. Flat electric heating products, the defects of this kind of electric heating products are: (1) Since the conduction and heating are concentrated on the heating wire, other parts of the product are not conductive and do not generate heat, so not only the heating is uneven, but also the heating wire itself has a higher calorific value , it is easy to cause local high temperature aging or even burning near the heating wire; (2) Since the heating wire must be laid in advance according to the required style, the product cannot be cut and spliced ​​arbitrarily after it is made, and because the fabric and the heating wire are separated from each other , so it is inconvenient to use; (3) Due to the use of a sandwich structure with a heating wire in the middle, the product structure is complicated, and the thickness is large, taking up a lot of space; (4) Since the heating wire is easy to damage, the insulation requirements are high, and at the same time The physical parameters of the fabric interlayer are inconsistent, so it is not suitable for harsh environments or outdoor environments with large temperature changes

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