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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0.645～0.850 g/cm3,抗压强度为60～93 MPa,比压缩强度为92～112 MPa.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。
Based on epoxy resin, hollow glass beads (HGM) activated by silane were used as fillers to prepare high-strength buoyancy materials. The structure and silane treatment effect of HGM were analyzed by XRD and FRIR. The influence of the type and content of HGM on the performance of buoyant material was studied by density test and uniaxial static compression test. The fracture properties of buoyant material were studied by SEM and water absorption test And water absorption. The results showed that: HGM was amorphous; silane molecules were grafted onto the surface of HGM, HGM was well bonded with epoxy resin and there was no interstice between the two. The larger specific compressive strength of HGM was beneficial to improve the performance of buoyant material. The density of buoyant material is 0.645-0.850 g / cm3, the compressive strength is 60-93 MPa, and the specific compressive strength is 92-112 MPa.cm3.g-1. When the content of HGM is low, the matrix at the ruptured surface of buoyant material HGM Epoxy resin has tailing characteristics, HGM content increases, the destruction of HGM increasing until completely destroyed; buoyancy material has good resistance to water absorption.