深海固体浮力材料的研制及性能探讨

选用改性环氧树脂作为基质原料,以自制改性固化剂调制成胶液,添加混合空心玻璃微珠,采用真空灌注的方法制备了深海用固体浮力材料。研究了胶液粘度、空心玻璃微珠粒径及成型工艺等因素对固体浮力材料密度、抗压强度、吸水率及耐静水压性能的影响,结果表明,低粘度改性环氧树脂胶液与空心玻璃微珠有很好的浸润性能,固化后力学性能优良,所制备的固体浮力材料能为深海4 000 m水下作业、深海探矿及科研考察提供浮力。

A Discussion on Preparation and Properties of Solid Buoyancy Materials Used in Deep Sea

A kind of modified epoxy resin as matrix resin was mixed with the homemade modified amines as a curing agent to prepare a kind of  glue, which was then used by adding some hollow glass microsphere, to prepare a kind of solid buoyancy material used in deep sea by adopting vacuum infusion process. Effects of viscosity of the glue, grain-size  and moulding techniques of the hollow glass microspheres on properties of the solid buoyancy material, including density, compressive strength, moisture absorption rate and hydrostatic pressure resistance, were investigated. Results showed that the modified epoxy resin glue with low viscosity can be well infiltrated into the hollow glass microsphere, leading to excellent mechanical properties of material after solidification. It is shown that the prepared solid buoyancy material can be used in underwater operations, deep-sea prospecting at the depth of 4 000 m below sea level, as well as other scientific expedition.