High-efficiency penetrant for composite material

Abstract

The invention discloses an efficient penetrant for a composite material. The penetrant is prepared from the following raw materials in parts by weight: 1 to 40 parts of fatty alcohol-polyoxyethylene ether, 1 to 40 parts of isomeric alcohol polyoxyethylene ether, 0.1 to 1 part of urea, 0.1 to 1 part of triethanolamine, 2 to 15 parts of ethanol and 40 to 70 parts of water. Compared with the prior art, the high-efficiency penetrant for the composite material provided by the invention has the advantages that resin can be quickly and uniformly wetted and permeated in a fiber base material, penetration time is only 40-50 seconds, and gum dipping time is shortened.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to a composite material additive, in particular to a high-efficiency penetrating agent for composite materials. Background technique [0002] Penetrant is a kind of auxiliary agent with a wide range of uses. It should be added wherever penetrating effect is required, and its main function is to reduce interfacial tension. The penetrating agent can reduce the surface tension of the resin solution and at the same time promote the penetration of the resin, which can not only make the resin function uniform, but also greatly shorten the molding time of the material. When the fiber base material is used as a composite material, it is necessary to impregnate the base material in the resin first, so that the resin can penetrate into the fiber base material, and the poor penetration of the resin will affect the strength of the composite material. The use of a penetrant can make the r...

AI Technical Summary

Problems solved by technology

[0003] At present, in the production process of composite materials, there are problems of slow and uneven penetration of resin and water into the fiber substrate. The penetrants used are isooctyl phosphate and JFC, which have limited alkali resistance and permeability, and nonylphenols have limited penetration. The effect of the agent is good, but it has certain environmental hazards; in addition, most penetrants only have a certain penetration effect on a single resin or a specific substrate. If the resin or substrate is replaced, the penetration effect will be reduced, thus limiting its use in composite materials. Applications in the field of materials