A kind of epoxy composite material and preparation method thereof

Abstract

The invention provides an epoxy composite material and a preparation method thereof. The raw materials of the epoxy composite material include an epoxy resin base material, an inorganic filler, a curing agent and a fiber fabric; the inorganic filler consists of two fillers with different particle sizes Composition, the ratio of the average particle diameter of the two fillers is 1:0.37-0.45, wherein, the average particle diameter of the filler with the large particle diameter is not less than 10 μm; In terms of the volume of the filler, among the two fillers, the filler with the large particle diameter Wherein, V is the volume percentage of the inorganic filler in the epoxy composite material, and the above epoxy composite material can be effective without affecting the thermal conductivity and insulation performance by adding fiber fabrics. Improve the mechanical properties of the epoxy composite material, especially the anti-cracking performance; by using two kinds of inorganic fillers with different particle sizes, compared with the fillers with three different particle sizes, the preparation process can be simplified and the 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 DC power sources such as distributed power sources, new energy storage devices, fuel cells, and microgrids, as well as more and more 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 of AC and DC power supply and AC and DC load power supply; on the other hand, the promotion of distributed power generation technology makes the traditional power distribution system expand the function of power generation from a single power supply form, resulting in energy from traditional power generation. The unidirectional flow of source, grid and load, 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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