为解决海洋石油工程中水下基础设施的完整性和安全性问题，本文应用流变学测试和室内模拟实验的方法，对环氧树脂密封胶材料特性及密封性能展开了研究。研究结果表明，环氧树脂密封胶及其组分固化前为假塑性流体，具有明显的剪切变稀特性，且温度对其性质具有显著影响。材料组分以3∶1配比制成的密封胶在4℃时具有高黏特性，基于Arrhenius关系，结合实验数据获得了黏度与温度的指数关系模型。其黏度随固化时间推移表现出显著增大的趋势，在完全固化前超过200 Pa·s。另一方面，水下模拟实验研究结果证实了该密封胶具有良好的黏结性能和承压强度，在150kPa环境压力下密封性能表现优异，可以作为浅水密封结构的注胶原料。本文为海洋石油工程水下密封提供了可靠的解决方案和生产作业的安全保障指导。

In this work, the properties and sealing properties of epoxy resin sealants are studied by means of rheology and laboratory simulation experiments. The result shows that the epoxy resin sealant and its components are pseudoplastic fluids with obvious shear thinning properties. The temperature has a significant effect on its properties. The sealant formed by the ratio of material components in 3∶1 presents a high viscosity at 4℃. In addition, Exponential relationship model between viscosity and temperature is proposed by using Arrhenius relationship and experimental data. The result of underwater simulation experiments confirmed that the sealant has good bonding performance and compressive strength, and can be used as a raw material for injection of shallow water sealing structures.