Elastomer Polyurethane Castings
We offer custom polyurethane coating and casting services with the desired hardness (shore value) for your projects.
Polyurethane elastomers, also known as elastomer polyurethanes, are used in many heavy industries due to their flexibility, impact resistance, and wear resistance. Polyurethane elastomers, which have rubber-like elasticity, are beginning to replace rubber in many areas due to their higher performance and service life.
If we take a closer look at the chemistry of PU elastomers, we can see that they consist of three basic building blocks. Elastomers are formed by the reaction of polyol, chain extender, and isocyanate in the correct proportions and conditions. When we look at the chemical structure of the resulting polymer chains, we can see the difference between elastomers and other polyurethanes. The linear molecular chain structure provides high tear and tensile strength, as well as unique elasticity to elastomers. The urethane bonds formed by the reaction of polyol and chain extender with isocyanate form the rigid segment, while the long polyol chain forms the soft segment. The ratio of the rigid segment to the soft segment and the way they separate from each other largely determine the final properties of the elastomer. In addition to the urethane chain, the intermolecular hydrogen bonds formed between urethane groups are crucial for the mechanical properties of the elastomer.
