Epoxy resin sealant is a sealant based on epoxy resin, which has excellent sealing property and high adhesive bonding strength. It is widely used in aerospace, electronics, electrical appliances, optoelectronics, electromechanical, automobile and motorcycle parts, machinery, civil engineering, and other fields of high vacuum and high air tightness sealant bonding, packaging, and protection. Liquid sealant with epoxy resin as sealant base material has been widely used in various production fields. Because epoxy resin has the following unique advantages: (1) strong cohesive force, the molecular structure of the epoxy resin fat hydroxyl (- CH -) and ether chain these polar groups, the epoxy resin and the interface between adjacent to produce electromagnetic attraction, the epoxy group can be generated and metal-containing active hydrogen reaction chemical bonds, so the material such as metal, glass, plastic, ceramic has good adhesive force. Small shrinkage: it does not produce by-products in the curing process, will not produce bubbles. For the curing of pure resin, its shrinkage rate is less than 2%, after adding filler, can be reduced to about 1%. ⑶ Good stability: can be stored for a long time without deterioration. (4) Good medium resistance: resistance to general acid and alkali and organic solvents. ⑸ Low creep: under long-term stress, no deformation or minimal deformation. The technology is good: choose different curing agents and add other resins, rubber, and fillers to achieve modification, can make epoxy resin curing at room temperature or low-temperature conditions, can also be fast solidification.