In 1963, General Motors replaced rubber gaskets with adhesives and bonded windshields to test vehicles for the first time. In 1978, bonding technology became the standard practice of American automobile industry and became popular all over the world. The reason is that the bonding process is more economical and efficient, and the effective connection between the components and the body or frame is realized, which greatly improves the safety of the car.

Adhesives are mainly used for structural bonding and sealing in the field of road traffic and rail transit. The key technology is elastic bonding. Therefore, the materials used for bonding layer and waterproof film under high dynamic stress must have high elasticity and tear resistance at the same time. In addition, the closed environment of vehicles requires that vehicle adhesives should be low-performance, free of toxic and harmful substances, and have good weather resistance and ultraviolet resistance. At present, polyurethane adhesives are always the preferred materials for bonding applications under high dynamic stress, but the environmental protection of VOC content of polyurethane products needs to be improved.