▎ 摘　　要

NOVELTY - Preparing polyurethane explosion-proof material comprises (a) carrying out coupling and grafting reaction between nano materials and coupling agent containing hydroxy groups in the first reaction solvent to obtain primary modified nano material, (b) mixing primary modified nano material, polymer containing tetrahydro bonds and the initiator in second reaction solvent, polymerizing to obtain secondary modified nano material and (c) mixing secondary modified nano material, isocyanate pre-polymer and polyether polyol for condensation reaction. USE - The polyurethane explosion-proof material is useful in coatings, clothing and buildings (claimed). ADVANTAGE - The material has good self-healing performance and improves impact resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a polyurethane explosion-proof material, which is obtained by the above method.