Temperature-resistant and moisture-resistant epoxy pouring sealant for hydrogen energy fuel cell humidifier and preparation method of temperature-resistant and moisture-resistant epoxy pouring sealant

Abstract

The invention discloses a temperature-resistant and moisture-resistant epoxy pouring sealant for a hydrogen energy fuel cell humidifier , the epoxy pouring sealant is prepared by mixing a component A and a component B according to a certain proportion, the component A comprises the following components in parts by weight: 80-90 parts of epoxy resin, 10-20 parts of toughened resin and 0-2 parts of a surfactant; the epoxy resin is a mixture of m-xylenol formaldehyde epoxy resin, hydrogenated bisphenol A epoxy resin and organic titanium epoxy resin; the toughened resin is one or more of organic silicon modified epoxy resin, polyether epoxy resin, acrylic rubber modified epoxy resin and carboxyl-terminated liquid nitrile rubber; and the component B is a curing agent, and the curing agent is one or more of an SP multifunctional epoxy curing agent, FB high-temperature-resistant flame-retardant thermosetting phenolic resin and liquid anhydride. The pouring sealant disclosed by the invention has good temperature resistance and moisture resistance, can resist 100-110 DEG C for a long time, has very good adhesive force to an LCP (Liquid Crystal Polymer) shell, and most importantly, does not cause failure of a proton membrane.

Description

technical field [0001] The invention relates to the technical field of compound preparation, in particular to a heat-resistant and moisture-resistant epoxy potting glue for a hydrogen energy fuel cell humidifier and a preparation method thereof. Background technique [0002] Hydrogen fuel cell is a clean, efficient and long-life power generation device. Compared with conventional power generation technologies, hydrogen fuel cells have great advantages in terms of efficiency, safety, reliability, flexibility, cleanliness, and operational performance, and have broad application prospects. The principle of the hydrogen energy fuel cell: H2 passes through the anode carbon fiber diffusion layer in a gaseous state, and is separated into H protons and electrons in the catalytic layer, and the H protons (in the state of H3O+) pass through the proton exchange membrane, and combine with O ions in the cathode catalytic layer to form water. . The proton exchange membrane can only pass...

AI Technical Summary

Problems solved by technology

[0005]The proton membrane plays a vital role in the whole hydrogen fuel cell, and the organic substances such as N and S and the ionized substances such as Sn, Pb, Hg, Bi and As It will make the proton membrane invalid, so the curing agents (amines, imidazoles, etc.) used in general epoxy resins cannot meet the requirements of the proton membrane and humidifier

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