摘要
研究了含环氧基团丙烯酸酯液体橡胶对环氧树脂三乙醇胺固化体系的增韧作用。结果表明,增韧环氧树脂体系是以橡胶粒子为分散相的两相结构,丙烯酸酯液体橡胶能显著地提高环氧树脂的冲击强度和断裂韧性GIC,幅度分别达63.0%和350%,而拉伸性能、弯曲性能和玻璃化温度的降低幅度不大。
The toughening of epoxy resin by the modification with acrylate liquid rubber containing pendant epoxy groups was investigated. The results show that the addition of 5 phr of liquid rubber leads to 63% increase and 350% increase in impact strength and fracture toughness GIC respectively. At the mean time, the tensile strength, tensile modulus, flexural strength and glass transition temperatures of modified epoxy resin are less than those of the parent epoxy resin. The SEM analysis of the fracture surfaces indicates that the modified epoxy system exhibits two-phase morphology with rubber sphericity particles dispersed in matrixes.
出处
《航空材料学报》
EI
CAS
CSCD
2003年第4期48-51,共4页
Journal of Aeronautical Materials
