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蛭石的高膨胀倍数制备工艺与机理
作者:解颜岩1 2 孙红娟1 2 3 彭同江1 2 3 4 罗利明1 2 田景斐1 2 秦亚婷1 2 
单位:(1. 西南科技大学 固体废物处理与资源化教育部重点实验室 四川 绵阳 621010  2. 西南科技大学 矿物材料及应用研究所 四川 绵阳 621010  3. 西南科技大学 四川省非金属矿粉体改性与高质化利用技术工程实验室 四川 绵阳 621000  4. 西南科技大学分析测试中心 四川 绵阳 621010) 
关键词:草酸 过氧化氢 工业蛭石 高膨胀倍数 镶嵌结构 
分类号:TD985
出版年,卷(期):页码:2020,48(1):0-0
DOI:
摘要:

 为提高蛭石矿产资源利用效率和膨胀蛭石产品附加值,以新疆尉犁工业蛭石为原料,采用化学处理–焙烧加热法制备高膨胀倍数膨胀蛭石(HEV),研究HEV结构与形貌、最佳制备工艺与膨胀机理。结果表明:HEV样品膨胀倍数(约70倍)远超常规方法制备的膨胀蛭石样品。HEV的制备机理与工业蛭石内部金云母、水金云母及蛭石的镶嵌结构有关。该结构可导致工业蛭石片层形成大量空腔,有效阻碍内部气体的逸出,使工业蛭石获得更好的热膨胀性能。该制备方法可提高工业蛭石资源应用效率,降低生产成本。HEV可作为蛭石纳米材料的低成本前驱体。

基金项目:
四川省教育厅创新团队项目(14TD0012);国家重点研发项目(2018YFC1802902);西南科技大学研究生创新基金(18ycx043)。
作者简介:
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