Ultraviolet/heating-curing epoxy resin adhesive and preparation method thereof

The invention relates to a preparation method of an ultraviolet/heating-curing epoxy resin adhesive. The ultraviolet/heating-curing epoxy resin adhesive is prepared from the following raw materials in percentage by mass: 50-70% of epoxy resin, 1-5% of ultraviolet initiator, 1-5% of thermal initiator, 5-20% of diluter, 5-20% of toughener, 1-10% of thixotropic agent and 1-2% of colorant. The ultraviolet/heating-curing epoxy resin adhesive only adopts the epoxy resin system; and the single resin system can better solve the problems in storage stability, compatibility and binding force. The epoxy resin system is utilized to simultaneously implement ultraviolet curing and heat curing, thereby avoiding the problems in compatibility and stability caused by different resin systems. By adopting hexafluoroantimonate as the thermal initiator, the ultraviolet/heating-curing epoxy resin adhesive has high stability, and can implement storage at 2-10 DEG C without stratification, thereby lowering the storage cost.