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聚氨酸橡胶有着较大的硬度范围(邵氏20°～邵氏80°以上),是一种介于橡胶和塑料之间的弹性材料,因此又称为聚氨酯弹性体。它以氨基甲酸酯(—R—NHCO—)为主链,所以它具有高耐磨性(为天然橡胶的5～10倍)、高强度(为丁晴胶的l～4倍)、高耐油性(耐矿物油优于丁腈胶)、耐老化、耐臭氧、耐辐射及优良的电性能。因此自它问世以来,得到了各个工业部门的重视和更加广泛的应用(图1)。
Polyurethane rubber has a larger hardness range (Shore 20 ° ~ Shore 80 °), is a kind of elastic material between the rubber and plastic, so called polyurethane elastomer. It is based on urethane (-R-NHCO-), so it has high abrasion resistance (5 to 10 times of natural rubber), high strength (1 to 4 times as high as n-butyl rubber), high Oil resistance (mineral oil better than nitrile rubber), anti-aging, ozone resistance, radiation and excellent electrical properties. Therefore, since its inception, it has received the attention and wider application of various industrial sectors (Figure 1).