Nano carbon-fiber composite electrical heating material and preparing method thereof

Abstract

The invention relates to a nano carbon-fiber composite electrical heating material and a preparing method thereof. The nano carbon-fiber composite electrical heating material can effectively solve the problem that the dispersion uniformity of the electrical heating coating is influenced even the phenomenon of aggregation flocculation is formed. The nano carbon-fiber composite electrical heating material is prepared from the following components by weight percentage: 5-15% of nano carbon fiber powder, 10-25% of conductive acetylene carbon black powder, 10-25% of conductive graphite powder, 10-25% of nano bamboo charcoal powder, 0.1-3% of coupling agent, 0.3-4% of dispersing agent, 1-10% of fire retardant, 1-10% of binding agent, 0.1-1% of defoaming agent and the balance of water. The preparation method comprises the following steps of: uniformly mixing the nano carbon fiber powder and the nano bamboo charcoal powder, adding the water and the coupling agent in the mixture and stirring to obtain a first mixture; uniformly mixing and stirring the conductive acetylene carbon black powder and the conductive graphite powder, then putting into the first mixture, adding the dispersing agent and then putting into a vertical mixing ball mill for dispersed processing to obtain a second mixture; and adding the fire retardant, the binding agent and the defoaming agent to the second mixture,and continuously stirring to obtain the nano carbon-fiber composite electrical heating material. The nano carbon-fiber composite electrical heating material has the advantages of rich raw materials, simple preparing method, easiness in operation, good quality of product, safety and environment friendliness, wide application and huge economic and social benefits.

Description

technical field [0001] The invention relates to the field of electrothermal materials, in particular to a nano-carbon fiber composite electrothermal material and a preparation method thereof. Background technique [0002] In order to improve the electrothermal conversion efficiency and reduce energy consumption, the development and application of nanometer materials and technologies have promoted the development of electrothermal technology. As we all know, once the conductive particle reaches the nanometer particle size, its surface energy, surface atomic number, surface tension and specific surface area will be greatly increased, and its electrical conductivity and electrothermal conversion efficiency will also be greatly improved. A patent has been published "Nano silicon carbon composite fiber electrothermal coating and its preparation method" (200510027210.0), the main point of the invention is to graphitize the activated carbon fiber mat to make carbon fiber powder wit...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a nano-carbon fiber composite electric heating material and its preparation method, which can effectively solve the dispersion uniformity of the electric heating coating, and even form agglomeration and flocculation, which affects the entire conductive network and The chain-type conductive structure causes the failure of the electrothermal performance and the decline of the function, and the effect of the nano-electrothermal coating cannot be well exerted.