Casting polyurethane elastomer is a synthetic material with elasticity and plasticity, which is usually composed of polyether or polyester polyurethane resin and various additives. Now, Xinruituo will take you to know about its classification.
According to the structure of casting polyurethane elastomer, the classification can be divided into the following categories:
1. Polyether polyurethane elastomer. This material is often made of polyethylene glycol as the main raw material and has excellent flexibility, wear resistance and oil resistance. Therefore, it is often used in fields such as human prosthetics, automobile bumpers, and cushioning glue in sports shoes.
2. Polyester polyurethane elastomer. This material is usually made from the reaction of polyester polyether diol and isocyanate, has excellent physical and mechanical properties, and can be applied in a wide temperature range. Therefore, polyester polyurethane elastomers are usually used in aerospace, automobile manufacturing, construction engineering and other fields.
3. Unstable polyurethane elastomer. Some foaming agents or stabilizers are needed in the preparation process of this material, so it is more inclined to be used in some special fields such as fire prevention, sound insulation, and heat preservation. Unstabilized polyurethane elastomers usually have the characteristics of light weight, high strength, and high sound absorption.
In short, casting polyurethane elastomer has a wide range of application fields, and different classifications have different characteristics and performances. Therefore, comprehensive consideration should be made according to actual needs when selecting materials.
