固体浮力材料用中空环氧大珠的制备及性能研究

Research on Preparation and Performance of Hollow Epoxy Macrospheres for Solid Buoyancy Material

以发泡聚苯乙烯(EPS)泡沫球、环氧树脂、硅灰石纤维为原材料,采用喷涂法制备了中空环氧大珠并研究了硅灰石纤维添加量、目数和表面改性对中空环氧大珠性能的影响。结果表明:使用200目经过表面改性的硅灰石纤维且硅灰石纤维和环氧树脂添加比例在0.8∶1到1∶1之间时,得到的中空环氧大珠密度为0.3 g/cm^3,抗压强度为6 MPa,能够满足固体浮力材料实际使用需求。

The expanded polystyrene(EPS) beads were coated with the epoxy resin and wollastonite fiber by the spray coating method to prepare hollow epoxy macrospheres. The effects of wollastonite fiber content, mesh number and surface modification on the properties of hollow epoxy macrospheres were studied. The results show that when mass ratio of the 200 mesh surface-modified wollastonite fibers and epoxy resin is between 0.8 ∶1 and 1 ∶1, the density of the hollow epoxy macrospheres can reach 0.3 g/cm^3 and the compressive strength can reach 6 MPa, which could meet the actual using requirements of solid buoyancy materials.