Polyurethane elastomer formed by the polymerization reaction of diisocyanate and active hydrogen compound, the rigid segment containing urea group composed of diisocyanate and diamine chain extender, the glass transition temperature is much higher than room temperature, and it is glassy at room temp......
Read MoreIn order to more accurately select the shrinkage rate of large cast polyurethane elastomer products, the influence of process conditions, environmental factors and product structure on the shrinkage rate was systematically studied, and the shrinkage rate versus time curve was measured. The reasons a......
Read MorePolyurethane adhesive 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. F......
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