Buoyancy material composition, buoyancy material and manufacturing method thereof

The invention discloses a composition of a buoyancy material, the buoyancy material and a manufacturing method of the buoyancy material. The buoyancy material composition comprises thermosetting resin, a plurality of micron-sized hollow spheres, a plurality of nano-sized metal oxide particles and a curing agent. Through the roughened surfaces of the hollow spheres and the metal oxide particles, the buoyancy material prepared by the manufacturing method has low water absorption. 本发明公开了一种浮力材料的组合物、浮力材料及其制造方法。此浮力材料的组合物包含热固性树脂、多个微米级中空球、多个纳米级金属氧化物颗粒及固化剂。通过这些中空球的粗化表面及这些金属氧化物颗粒，由此制造方法所制得的浮力材料具有低吸水率。