
PU wheels are commonly known as Youli glue, spring glue, full name: polyurethane or isocyanate polymer. PU wheel is an elastic body between plastic and rubber. Its excellent and unique comprehensive properties are not available in ordinary plastic and rubber.
What are the characteristics of PU wheels? The elastomer of the PU wheel has good properties such as wear resistance, chemical corrosion resistance, high strength, high elasticity, low pressure resistance, wear resistance, strong shock absorption, tear resistance, radiation resistance, high load bearing and shock absorption. PU wheels also have a wide range of hardness, from Shore A10-100.
There are already products on the market that exceed Shore A100 and above. In addition, the PU wheel has excellent shock absorption performance, can absorb shock and cushion the pad, is more impact-resistant than metal springs, and does not damage the mold. These characteristics of PU wheels are very suitable as caster materials.
The elastic body of PU wheel can be formed by mastication, mixing and vulcanization process like general rubber (referring to MPU); PU wheel can also be made into liquid rubber, pouring molding or spraying, potting, centrifugal forming (referring to CPU); PU wheels can also be made into pellets, which, like ordinary plastics, are formed by injection, extrusion, calendering, blow molding and other processes (referring to CPU). Molded or injection molded parts, within a certain hardness range, can also be machined for cutting, grinding, drilling and so on. The diversity of processing makes the applicability of PU elastomers very wide, and the scope of application has been expanding.
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