深海浮力材料压缩损伤机理及模拟动态服役性能预报

The deep-sea buoyancy material is key marine engineering material for ocean development, ocean exploration, marine engineering equipment installation and maintenance as well as offshore oil drilling and other areas. This study is mainly designed for optimizing materials system of deep-sea buoyancy material (for solving the contradiction of low density and high strength), analyzing the compression damage mechanism of deep-sea buoyancy material and the dynamic compression deformation behavior under hydrostatic pressure (simulated deep-sea environmental conditions), building a simulation environment performance evaluation methods of seep-sea buoyancy material and study the reliability analysis methods of application, establishing the damage failure mode of deep-sea buoyancy material and their factors, and then establishing microscopic damage mechanism of the buoyancy material. Based on the study of simulation dynamic compression behavior of deep-sea buoyancy material, the dynamic damage mechanism of the buoyancy material under simulated environmental conditions and reliability analysis methods of service will be revealed. This study could provide the theoretical foundation for the development, production, application of deep-sea buoyancy material and provide protection for reliability applications of buoyancy material.

深海浮力材料是海洋开发、海洋探测、海洋工程装备安装维修以及海洋石油钻采等海洋工程领域的关键性材料。本项研究主要针对深海浮力材料的材料体系优化设计（解决低密度和高强度的矛盾）、分析深海浮力材料压缩损伤机理、等水静压（模拟深海环境条件）动态压缩变形行为，建立模拟深海环境浮力材料性能评价方法以及应用可靠性分析方法等开展研究，建立深海浮力材料损伤失效模式及影响因素，建立浮力材料微观损伤机制，通过深水浮力材料模拟动态压缩行为研究，揭示浮力材料模拟工况环境条件下的动态损伤机理及服役可靠性评价方法。为我国深海浮力材料开发、生产、应用奠定理论基础和深海浮力材料可靠性应用提供保障。

深海浮力材料是海洋工程中必不可少的关键材料。项目通过对深海浮力材料材料体系优化设计，确定了深海浮力材料材料体系为环氧树脂填充玻璃微珠体系，进而制备了深海浮力材料，通过对玻璃微珠表面改性研究，确定了深海浮力材料树脂基体与轻质填料界面性能及界面损伤微观机理；进一步研究了深海浮力材料单轴和水等静压情况下的压缩损伤机制，通过深水浮力材料模拟动态压缩行为研究，揭示浮力材料模拟工况环境条件下的动态损伤机理及服役可靠性评价方法。项目的完成，为我国深海浮力材料开发、生产、应用奠定理论基础和深海浮力材料可靠性应用提供了重要的保障。