At different shear rate, current density of SiO_2/PU nanocomposites was small, and did not change with electric field strength, SiO_2 content and particle size.

• 在不同的剪切速率下，SiO_2/PU纳米复合物的漏电流很小，而且不随电场强度、二氧化硅的含量和粒子粒径的变化而变化；