Nanostructure formed through self-assembly of block copolymer has been used to modify epoxy resins and the shape of the nanobrushes has a significant effect on its properties. Through RAFT polymerization and bulk self-assembly of PMMA-b-PTEPM block copolymers, SiO₂@PMMA hybrid nanobrushes was prepared with three different shapes, i.e., nanospheres, nanowires and nanosheets. According to the transmission electron microscope results, all three kinds of nanobrushes were well dispersed in the epoxy resins. The differential scanning calorimeter and thermogravimetric analysis tests showed that the addition of these nanobrushes has no significate effect on the curing behaviour and the glass transition temperature of epoxy resins. Their modification effects have been investigated through tensile, bending and impact tests. Compared with the neat epoxy resin, the bending and tensile strengths of 0.5 wt% nanosphere-filled epoxy resins were increased by 11.7% and 27.0%, and the impact strength of 0.5 wt% nanowire-modified epoxy resins was increased by 93.0%. And the nanosphere-modified epoxy resins showed a better comprehensive performance.

通过嵌段共聚物自组装形成的纳米结构已被用于改性环氧树脂，纳米刷的形状对其性能有显着影响。通过PMMA- b -PTEPM嵌段共聚物的RAFT聚合和本体自组装，制备了纳米球、纳米线和纳米片_{三种不同形状的SiO 2 @PMMA杂化纳米刷}。根据透射电镜结果，三种纳米刷均在环氧树脂中分散良好。差示扫描量热仪和热重分析测试表明，这些纳米刷的添加对环氧树脂的固化行为和玻璃化转变温度没有显着影响。通过拉伸、弯曲和冲击测试研究了它们的改性效果。与纯环氧树脂相比，0.5 wt%纳米球填充环氧树脂的弯曲强度和拉伸强度分别提高了11.7%和27.0%，0.5 wt%纳米线改性环氧树脂的冲击强度提高了93.0%。纳米球改性环氧树脂表现出更好的综合性能。