Deep sea flexible pressure-resistant buoyancy material and preparation method thereof

The invention provides a deep sea flexible pressure-resistant buoyancy material which is composed of a base body and hollow microspheres, and the mass ratio of the base body to the hollow microspheres is 100: (33-80); the base body is lard oil. The hollow microbeads are hollow glass microbeads. The density of the material is 0.64-0.78 g/cm < 3 >, the compression deformation rate under 70 MPa is less than 1%, the water absorption rate within 72 hours is less than 0.25%, and the compression strength is 70-110 MPa. The service water depth of the buoyancy material can reach 5500 m or above. 本发明提供一种深海柔性耐压浮力材料，所述材料由基体和空心微珠构成，所述基体和所述空心微珠的质量比为100：(33-80)；所述基体为猪油。所述空心微珠为空心玻璃微珠。所述材料的密度为0.64-0.78g/cm3，在70MPa下压缩变形率小于1％，72小时吸水率小于0.25％，耐压强度为70-110MPa。本发明的浮力材料的服务水深可达到5500米以上。