Epoxy resin-based composite material and method for reducing precipitation speed of filler

Abstract

The invention discloses an epoxy resin-based composite material and a method for reducing the precipitation speed of filler. Iron trioxide powder with the weight being 2% of that of resin is added into an epoxy resin composite material mixed solution. Compared with the prior art, the method disclosed by the invention is simple to operate, and the effect of reducing the precipitation speed of the filler of less than 800 meshes in the epoxy resin mixed solution can be achieved by adding the ferric oxide powder of which the weight is 2% of the weight of the resin into the filler and stirring; the cost is not increased, the iron trioxide powder is low in price, and the adding amount is small; the method is convenient to use in the production process, the stirring step can be omitted in the use process due to the fact that the precipitation speed is reduced, energy consumption is saved, and cost is reduced.

Description

technical field [0001] The invention relates to the field of functional composite materials using epoxy resin as matrix resin, in particular to an epoxy resin matrix composite material and a method for reducing the precipitation speed of fillers. Background technique [0002] In the field of functional composite materials with epoxy resin as matrix resin, specific functions are usually achieved by adding specific fillers. For example, the main fillers of epoxy resin-based thermal insulation composites are hollow microspheres and mica powder; the main fillers of epoxy resin-based creep-resistant insulating composites are silica powder; epoxy resin-based antistatic composites are mainly carbon black and Silica powder. Now in the field of composite material production, there are mainly the following problems: 1. The fillers below 800 mesh precipitate faster in the epoxy resin mixed solution, which is easy to cause during the production process of gluing (the epoxy resin mixtur...

AI Technical Summary

Problems solved by technology

At present, there are mainly the following problems in the field of composite material production: 1. Fillers below 800 meshes precipitate faster in the epoxy resin mixed solution, which is easy to cause Inhomogeneous local fillers lead to more defective products

2. In order to improve the problem of too fast filler precipitation in the epoxy resin mixed solution, it is mainly realized by replacing the filler with a smaller particle size. Replacing the filler with a smaller particle size can reduce the sedimentation speed of the filler in the epoxy resin mixed solution, and at the same time It will also cause the problem of increased burrs in the processing of composite materials. In addition, the smaller the particle size of the filler, the higher the price, which greatly increases the production cost.

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