In recent years, urethane materials have been widely used because of their higher strength. Rubber and polyurethane materials, because of their high elasticity, good wear resistance, sound insulation and damping characteristics, are used in automobile, ordnance, aerospace, chemical industry and other damping and damping mechanisms. Compared with general spring steel, rubber and polyurethane materials have greater energy absorption, corrosion resistance, non-magnetic and insulation properties.

Polyurethane has the advantages of high elasticity, excellent wear resistance, sound insulation and damping characteristics. Compared with other materials, the biggest difference is that the elastic modulus is low (E ≈ 10 MPa) and the elongation is very high (δ = 100% - 1000%). This excellent tensile and compression capacity has high energy storage capacity. It is widely used in various products. Polyurethane springs are widely used in various vehicle suspension systems, aircraft landing mechanisms, shock and vibration resistant vibration isolators, pneumatic instruments and mattress springs.

Polyurethane is made of polyol and diisocyanate. In the process of production, if the third component with multi-functional group is added, another kind of polyurethane with molecular structure can be produced, which is crosslinked polyurethane. Due to its high selectivity in the composition of polyurethane, as well as in the composition of rubber, it is highly variable.

Classification of polyurethane spring: EX type high load polyurethane spring, A type high load polyurethane spring, LA type high load polyurethane spring, UT type high load polyurethane spring, UD type high load polyurethane spring, etc.

To learn more about urethane springs used in automobile/car die industry, you can check out https://www.pepsenpu.com/urethane-die-spring-c-3_ 36.html.