It has excellent adhesion to many substrates, and in flexibility and absorbable stress, it exceeds also epoxy adhesives. Foam is generally used after curing, with a uniform density distribution, low thermal conductivity, good thermal insulation performance, and elasticity and strength performance, with good elasticity and strength, with good dustproof and waterproof performance, low thermal conductivity, and widely used in building construction and industry, automotive, electronics and other fields, such as door and window sealing, roof waterproof, wall insulation, car body gap sealing, electronic equipment shell sealing and protection.