Epoxy composite material and production method thereof

Abstract

The invention provides an epoxy composite material and a production method thereof. Raw materials of the epoxy composite material comprise an epoxy resin base material, inorganic filler, a curing agent and a fiber fabric; the inorganic filler is composed of two kinds of filler with different particle size, and a ratio of the average particle size of the two kinds of filler ranges from 1:0.37 to 1:0.45, wherein the average particle size of the filler with the larger particle size is equal to or larger than 10 [mu]m; on the basis of the volume of the fibber, in the two kinds of filler, a ratio of the amount of the filler with the larger particle size and the amount of the filler with the smaller particle size is as shown in the specification, wherein V is a volume percentage of the inorganicfiller in the epoxy composite material, and according to the epoxy composite material, by adding the fiber fabric, not only can the heat conduction performance and the insulation performance be freefrom effects, but also the mechanical performance, especially the anti-crack performance, of the epoxy composite material is effectively improved; and compared with a method where three kinds of filler with different particle size is adopted, the production method of the epoxy composite material has the advantages that by adopting the two kinds of inorganic filler with the different particle size,the production working procedure can be simplified, and operation is simple.

Description

Technical field [0001] The invention relates to the technical field of thermally conductive insulating materials, in particular to an epoxy composite material and a preparation method thereof. Background technique [0002] With the widespread access of distributed power sources, new energy storage devices, fuel cells, microgrids and other DC power sources, as well as the increasing applications of DC loads such as electric vehicles, data centers, computers, and urban rail transit, traditional power distribution networks are required At the same time, it has the ability to connect AC and DC power sources as well as AC and DC load power supply. On the other hand, the promotion of distributed power generation technology makes the traditional power distribution system expand from a single power supply form to the power generation function, resulting in energy from the traditional The unidirectional flow of sources, grids, and loads, and the development of bidirectional flow, requires...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the epoxy resin material in the prior art is difficult to meet the anti-crack performance requirements, and the preparation process of the epoxy resin material is complicated by using fillers of various particle sizes, thereby providing a While having good thermal conductivity and insulation performance, it has strong crack resistance performance, adopts fewer types of filler particle sizes, and is an epoxy composite material with simple preparation process and its preparation method.

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