The invention provides polyacrylic ester interpenetrating network polymer emulsion and highly damped materials, pertaining to the high molecular polymer technological field. The polymer emulsion group consists of protecting adhesive, emulsifier, activator, buffering agent, cross-linking agent, water and monomers, wherein, the monomers comprises butyl acrylate, methacrylic acid, acrylic acid epoxy propyl ester, cinnamene, etc., and polymerize in an interpenetrating network shape. The highly damped materials used for decreasing vibration of vehicles are prepared by the emulsion after addition agent, filing materials and water are added. Since the emulsion of the invention, hollow glass microbeads and talc are used as the important components of the filling materials, the high molecular adhesive and elastic material of the invention has better damped performance, the tenacity and elasticity of the material are enhanced, the intensity of tension, and flexural rigidity resistance and wearing resistance of the material are improved, therefore, the effects of vibration decreasing, noise decreasing, sound and heat insulation can be achieved under various complicated conditions.