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hema是什么材质
更新时间: 2020-12-03 16:27:17  

hema是一种无色透明易流动液体,。在甲基丙烯酸中加入硫氰酸铁、四甲基氯化铵等及少许对苯二酚,搅拌加热至90℃,在氮气保护下,通入环氧乙烷气体反应约2h即可得聚甲基丙希算羟乙酯,即hema。它的熔点是-12℃,相对密度是1.074,折射率1.4505,hema是隐形眼镜的主要成分,分子结构是网状结构,优点是具备吸附和释放低分子的性能,目前市场应用非常广泛,像齿轮泵、螺旋弹簧、波纹管等又可以使用。

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