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通过添加具有活性的纳米TiO2对异佛尔酮二胺(IPD)与酰胺基胺树脂作为复合固化剂的环氧胶粘剂体系进行改性,实验结果表明:随着纳米TiO2的适量加入,环氧胶粘剂体系的物理性能得到很大改善,当纳米TiO2的加入量达到6%(wt)时,达到最佳值,与纯树脂体系相比,弯曲强度提高96%,弯曲模量提高38%,冲击强度提高180%。而此时的环氧复合胶粘剂体系的粘接性能也比纯树脂均有所提高,剪切强度提高39%、剥离强度提高28%,以及玻璃化温度提高6%。可见,纳米TiO2的加入对环氧胶粘剂体系具有明显的增强作用。
The epoxy adhesive system with isophoronediamine (IPD) and amidoamine resin as the composite curing agent was modified by adding active nano-TiO2. The experimental results show that with the proper amount of nano-TiO2 added, the epoxy adhesive The physical properties of the system have been greatly improved. When the nano-TiO2 content reached 6% (wt), the best value was obtained. Compared with the pure resin system, the flexural strength increased by 96%, the flexural modulus increased by 38%, the impact strength Increase by 180%. Epoxy composite adhesive system at this time the adhesive properties are also improved than the pure resin, the shear strength increased 39%, peel strength increased by 28%, and the glass transition temperature increased by 6%. Visible, the addition of nano-TiO2 epoxy adhesive system has a significant enhancement.