Abstract: A series of AB crosslinked polymers(ABCPs)based on poly(hexamethylene adipate)-polyurethane(PHAPU)and methyl methacrylate(MMA)with various compositions were prepared by means of ultra-violet initiation polymerization. The values of crosslink density weredetermined by swelling equilibrum approach and rubberlike elasticity. The both results werein good agreement. The width of tangent δ peak at the half height was more than 60℃,andthe system was considered to be mechanically compatible.By simply varing the concentrationof the constituents, a series of damping materials, With a unique set of properties, could beobtained.

Key words: AB crosslinked polymers, polyurethanes, dynamic mechanical property, swelling equilibrium of polymer