Explosion proof type macromolecular self-regulating heating tape

Abstract

The invention provides an explosion proof type macromolecular self-regulating heating tape. The explosion proof type macromolecular self-regulating heating tape comprises two heating wires arranged in parallel, and a PTC material layer is evenly extruded on the two heating wires respectively; the PTC material layer is prepared from the following raw materials in part by weight: 82 parts of high-pressure low-density polyhexene, 9 parts of hexine carbon black, 8 parts of zirconia and 1 part of trimethanolpropyl trimethylacrylate; the outside of the PTC material layer is coated with an insulating layer, of which the outside is coated with an internal shielding layer and an internal sheath in turn; and the outside of the internal sheath is also coated with an external shielding layer and an external sheath in turn. The explosion proof type macromolecular self-regulating heating tape uses the PTC materials to control the temperature and adopts the structure with double shielding layers and double sheathes, so that the starting current is low, the heat tracing temperature is high, the performance is stable, and the explosion proof property is good.

Description

technical field [0001] The invention relates to a self-controlling temperature heating cable, in particular to a polymer self-controlling temperature heating belt with good explosion-proof performance. Background technique [0002] The self-controlling temperature heating cable first came out in the United States in the early 1980s. At that time, it was mainly used in the petroleum and petrochemical industry. The purpose of reducing the main force of transportation, with the continuous development of self-controlling heat tracing technology, has been widely used in many fields, such as in industry, it is mainly used in petroleum, chemical industry, thermal power plants, etc. It is necessary to prevent liquid substances in pipelines or tanks from solidifying / In places with slow flow, it is mainly used for heat tracing of fire-fighting pipelines in public facilities, and can be used for indoor heating and antifreeze of outdoor pipelines in winter in civil applications. [00...

AI Technical Summary

Problems solved by technology

[0004] However, at present, most polymer self-controlling heating cables have the disadvantages of large starting current, low heating temperature, and unstable performance, and with the increase of use time, their explosion-proof performance and other safety indicators are gradually reduced, and there is a big problem. Security risks

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