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      pvb材料是什么意思

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      pvb是什么玻璃中使用的材料(pvb是什么材料)

      pvb是什么玻璃中使用的材料(pvb是什么材料)

      最佳答案pvb又称聚乙烯醇缩丁醛酯,化学性质:密度1.07克/立方米,折射率1.488(20摄氏度),吸水率不大于4%,软化温度60~65摄氏度。溶于甲醇、丁醇、丙酮、甲乙酮、环已酮、二氯甲烷、氯仿...
      趣味百科# pvb材料是什么意思
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