Castor oil type polyurethane/acrylic resin double-component damping material and preparation method thereof

The invention relates to a castor oil type polyurethane/acrylic resin double-component damping material and a preparation method thereof. The double-component damping material comprises a component A and a component B, wherein the component A is a castor oil type polyurethane solution which is prepared from isocyanate polymers, castor oil and long-chain alcohol and has 40-60 percent of solid content, and the component B is one or two of hydroxyl acrylic resin and epoxy resin; when in use, the component A and the component B are mixed by the weight proportion of 1:(1-2) and subjected to curing for 10-30min under a curing condition of 180-220 DEG C. The castor oil type polyurethane/acrylic resin double-component damping material has a temperature range within -50-120 DEG C when tan delta is not less than 0.2, and T-peel strength and longitudinal shear strength can be respectively tested on the basis of GB/T 2790-1995 and GB-T7124-1986 after the damping material is bonded with an electro-galvanized sheet or a hot-dipped galvanized sheet. In the invention, the T-peel strength of the damping material is tested to be larger than 10N/cm and the longitudinal shear strength is tested to be larger than 5MPa by using a DXLL-10000 electronic tensile testing machine produced by Shanhai dejie machine equipment limited company.