| abstract |
The invention discloses a composite epoxy resin composition and a preparation method thereof. and 17 parts by weight to 21 parts by weight of a common curing agent, the titanium oxide powder is nano-titanium oxide powder modified by γ-aminopropyl triethoxysilane, and the flame retardant curing agent is a DOPO derivative ; The mixture of the titanium oxide powder, the flame retardant curing agent and the common curing agent undergoes pre-curing and secondary curing in turn to obtain a composite epoxy resin composition, and the temperature of the pre-curing is 90° C. to 110° C. ℃, the pre-curing time is 1h-2h, the secondary-curing temperature is 140-160°C, and the secondary-curing time is 2-4h. The invention solves the problems of flame retardancy and temperature resistance of the epoxy resin, and greatly limits the application of the epoxy resin. |