Preparation method of viscoelastic microporous elastomer

The invention discloses a preparation method of viscoelastic microporous elastomer, and belongs to the fields of polymer synthesis and polymer material preparation. The preparation method comprises the following steps: preparing a polyurethane prepolymer through a polymer polyol; adding epoxy resin subjected to high-temparature vacuum dehydration into the polyurethane prepolymer to prepare a component B simultaneously containing isocyanate groups and epoxy groups; compounding a polyurethane curing agent according to a predetermined proportion; then adding an epoxy resin curing agent to preparea component A with a curing function for both a polyurethane system and an epoxy system; uniformly mixing the materials of the component A and the component B in proportion by a foaming machine, andpouring the mixture into a mold for molding; and finally, demoulding the sample, and carrying out curing. According to the invention, the microporous elastomer with an interpenetrating polymer network(IPN) structure is prepare