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空心微珠/环氧树脂高强浮力材料的性能及断裂分析

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Keywords: 浮力材料,复合泡沫材料,环氧树脂,空心微珠,压缩,断裂

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Abstract:

以环氧树脂为基体,经硅烷活化处理的空心玻璃微珠(HGM)为填充剂,制备了高强浮力材料。采用XRD、FRIR分析了HGM的结构和硅烷处理效果,通过密度测试和单轴静态压缩试验研究了HGM的类型和含量对浮力材料性能的影响,利用SEM和吸水率试验研究了浮力材料的断裂特性和吸水性。结果表明:HGM为无定形结构;硅烷分子接枝在HGM表面,使得HGM与环氧树脂完好结合且两者界面没有间隙沟槽;HGM的较大比压缩强度有利于提高浮力材料的性能;高强浮力材料密度为0.645~0.850g/cm3,抗压强度为60~93MPa,比压缩强度为92~112MPa·cm3·g-1;HGM含量较少时,浮力材料断裂表面HGM破裂处的基体环氧树脂有拖尾特征,HGM含量增多时,HGM的破坏程度不断增大直至完全破坏;浮力材料具有较好的抗吸水性。

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