论文部分内容阅读
采用丙烯酸酯核-壳粒子和液体橡胶分别增韧改性环氧树脂胶粘剂,探讨了2种增韧体系对冲击强度和粘接强度的影响。研究发现,核-壳粒子在用量较少的情况下可获得比液体橡胶更优异的冲击强度和粘接强度,剥离强度达到10 kN/m以上。通过SEM观察改性环氧树脂断裂表面的微观形貌,并通过TEM进一步观察核-壳粒子增韧环氧树脂的分散状态,探讨微观形态与冲击强度和粘接强度之间的关系。
Adopting acrylate core-shell particles and liquid rubber respectively toughening the modified epoxy resin adhesive, the impact of two toughening systems on the impact strength and adhesive strength was discussed. The results show that the core-shell particles can obtain better impact strength and bonding strength than liquid rubber with less dosage, and the peel strength reaches more than 10 kN / m. The microstructure of the modified epoxy resin was observed by SEM. The dispersion of epoxy resin toughened by core-shell particles was further observed by TEM. The relationship between microstructure and impact strength and adhesive strength was also discussed.