The invention discloses an
epoxy sheet molding compound, wherein the middle core material is composed of fibers impregnated with
epoxy resin paste, and the upper and lower surfaces are covered with PE films. In parts by weight, the
epoxy sheet molding compound is made of the following raw materials: 100 parts of epoxy resin, 4-20 parts of
diluent, 15-80 parts of curing agent, 9-16 parts of thickener, 6 parts of
organic acid ~18 parts, 1~4 parts of internal
release agent, 80~180 parts of filler, 50~150 parts of
fiber. The preparation steps of the epoxy sheet molding compound include the preparation of epoxy resin paste, the preparation of the epoxy sheet molding compound and the curing of the epoxy sheet molding compound. The epoxy sheet molding compound has the advantages of good thermal fluidity, short
curing time, long storage time and the like, and the preparation process is simple. Higher-strength epoxy composite structural parts can be prepared by hot-press curing. Compared with
unsaturated polyester SMC products, the strength is greatly improved, and the
corrosion resistance and insulation properties are enhanced.