Electric heating composite material for temperature measurement and preparation method thereof

Abstract

The invention discloses an electrical heating compound material for measuring temperature, which comprises 6~9% weight percentage multi-walled carbon nanotubes, 91~94% weight percentage high density polyethylene. The method for making the compound material comprises: weighing multi-walled carbon nanotubes powder and high density polyethylene in proportion; mixing them and placing them into a model; pre-heating 5~20 minutes in 165~180 centigrade, pressing 5~20 minutes under 5~30 MPa pressure; stripping membrane and cooling to room temperature. The inventive compound material takes high density polyethylene as base, multi-walled carbon nanotubes as additive, which make the compound material has great conductivity and electrical heating performance and be used to temperature measurement in a certain temperature range.

Description

technical field

[0001] The invention relates to an electric heating composite material for temperature measurement and a preparation method thereof. Background technique

[0002] Carbon nanotubes are a typical representative of new one-dimensional nanomaterials, which were discovered in the early 1990s. It is formed by rolling up graphite layers in a certain way, and can be divided into single-wall carbon nanotubes and multi-wall carbon nanotubes according to the number of layers formed. Due to the excellent electrical, mechanical and thermal properties of carbon nanotubes, they have good application prospects in many fields such as field emission, microwave absorption, electrode materials, and general polymer materials. hotspot.

[0003] Polymer materials generally have the advantages of easy molding and can be used as thermal insulation and external coating materials, etc., but general polymer materials are insulating materials, which cannot be heated and maintained by e...

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