环氧树脂基固体浮力材料的吸水性及压缩性

Water Absorption and Compressibility of Solid Buoyancy Materials Based on Epoxy Resins

以不同固化剂固化的环氧树脂为基体,空心玻璃微珠(HGB)为分散相,加入硅烷偶联剂,制备得到固体浮力材料;研究了硅烷偶联剂添加量对固体浮力材料吸水性、45 MPa静水压力下吸水前后及干燥后压缩强度的影响;讨论了两种不同固化体系固体浮力材料性能的差异。结果表明:添加6%(质量分数)的偶联剂可以改善固体浮力材料的吸水性和压缩强度;酸酐固化剂甲基四氢苯酐(MeTHPA)固化的固体浮力材料的压缩强度高于胺类固化剂二氨基二苯基甲烷(DDM)固化的固体浮力材料的;固体浮力材料经过45 MPa静水压力吸水后及烘干后的压缩强度有不同程度的下降,添加偶联剂可以减小压缩强度下降的幅度。

With epoxy resins cured by different curing agents as the matrix,hollow glass beads（HGB）as the dispersed phase,and silane coupling agents as the additive,solid buoyancy materials were prepared.The effects of additive contents of silane coupling agents on water absorption and compression strength of the solid buoyancy materials before and after water absorbing under the condition of hydrostatic pressure of 45 MPa and after drying were studied.The differences in the properties of the two curing system solid buoyancy materials were discussed.The results show that adding 6%（mass fraction）coupling agents could improve the water absorption and compression strength of the solid buoyancy materials.The compression strength of the solid buoyancy material cured by acid anhydride curing agent MeTHPA was higher than that of the solid buoyancy material cured by amine curing agent DDM.The compression strength of the solid buoyancy materials decreased in varying degrees after water absorbing under the condition of hydrostatic pressure of 45 MPa and after drying,and adding coupling agents could reduce the decrease of compression strength.