高韧性环氧树脂体系的研究开发

Research and Development of High Toughness Epoxy Resin System

使用了核壳粒子、聚醚砜、纳米颗粒及自制改性增韧剂对环氧树脂进行增韧,筛选出增韧效果较优的高韧性环氧树脂体系。通过进一步对高韧性环氧树脂体系浇铸体及其复合材料性能的表征分析,优化了体系配方并探讨了其增韧机理。对高韧性环氧树脂体系的性能进行了测试,结果表明:优化的树脂体系拉伸模量达到3.43GPa,拉伸强度达到83.00 MPa,断裂伸长率达到7.10%,冲击强度达到32.04 kJ·m^(-2);制备的碳纤维/高韧性环氧树脂基复合材料性能优异,其拉伸强度达到2.17GPa,拉伸模量达到140.00GPa。

In this paper,core-shell particles,polyethersulfone,nanoparticles,and self-made modified toughening agents were used to toughen epoxy resin,and the toughening system with better toughening effect was selected.Furthermore,the formulation of the high toughness resin system was optimized and its toughening mechanism was explored by characterizing and analyzing the properties of the casting body and composite materials.The performance of the high toughness epoxy resin system was tested.The results show that the optimized system achieve a tensile modulus of 3.43 GPa,tensile strength of 83.00 MPa,elongation at break of 7.10%,and impact strength of 32.04 kJ·m-2.The prepared carbon fiber/high toughness epoxy resin composite based composite material has excellent properties,with a tensile strength of 2.17 GPa and a tensile modulus of 140.00 GPa.