sound insulating mat | Popular science introduction of polyurethane adhesives

The isocyanate molecular chain contains isocyanate groups (-NCO) and urethane groups (-NH-COO-), so polyurethane binder exhibit a high degree of activity and polarity. It has excellent chemical adhesion with substrates containing active hydrogen, such as foam, plastic, wood, leather, fabric, paper, ceramics and other porous materials, as well as metals, glass, rubber, plastics and other materials with smooth surfaces. Regardless of thepolyurethane binder, the isocyanate is chemically reacted and cured.

Polyurethane binder have excellent shear strength and impact resistance, are suitable for various structural bonding fields, and have excellent flexibility properties. 　　

Polyurethane binder has excellent rubber properties and can adapt to the adhesion of substrates with different thermal expansion coefficients. It forms a soft-hard transition layer between the substrates, which not only has strong adhesion, but also has excellent cushioning and shock absorption. Function. The low and ultra-low temperature properties of polyurethane binder exceed all other types of adhesives.