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硼砂和胶水反应原理
更新时间: 2020-06-30 00:00:00  

反应原理:聚乙烯醇在加热后溶于水,在其水溶液中加入硼酸和硼砂后,由于化学反应而形成凝胶。

PVA与硼酸反应形成的凝胶为单二醇型,与硼砂反应形成的凝胶为双二醇型,或者氯化钙之类的金属盐,生成硼酸钙不溶于水。

关键词: 硼砂 胶水 反应 原理

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