基于氧化铝和蒙脱石改性的新型多功能环氧树脂纳米复合材料

Novel multifunctional epoxy resinnanocomposites based on alumina and montmorillonite modification

将纳米氧化铝和有机蒙脱石作为填料加入到环氧树脂中,制备出了一种拥有优良性能的新型纳米材料。改性纳米氧化铝和有机蒙脱石混合均匀后加入到环氧树脂基体中,制备成纳米氧化铝/有机蒙脱石/环氧树脂复合材料。本次研究的新型多功能纳米复合材料模量和强度相较于纯环氧树脂和蒙脱石/环氧树脂复合材料分别提升了331.48%和150.8%以及140.46%和185.32%,缺口冲击强度分别提升了157.14%和127.9%,玻璃化温度和热分解温度分别提升9.7℃和19.3℃以及10.5℃和4.1℃。在多种性能上都比环氧树脂有大幅提升;经过检测,纳米氧化铝和有机蒙脱石相互作用,纳米氧化铝和蒙脱石纳米薄层相互交错分布。证明纳米氧化铝具有促进蒙脱石薄层分散的作用,这种微观结构使新型纳米材料具有优良的性质。

Nano-alumina and organic montmorillonite were added as fillers to the epoxy resin to prepare a novel nano-material with excellent properties.The modified nano-alumina and the organic montmorillonite were uniformly mixed and then added to the epoxy resin matrix to prepare a nano-alumina/organic montmorillonite/epoxy composite material.The modulus and strength of the new multifunctional nanocomposites in this study were 331.48%and 150.8%,and 140.46%and 185.32%,respectively,compared with that of pure epoxy resin and montmorillonite/epoxy composites.The increase was 157.14%and 127.9%,and the glass transition temperature and thermal decomposition temperature were increased by 9.7℃and 19.3℃,and 10.5℃and 4.1℃,respectively.It had a significant improvement in epoxy resin in a variety of properties.After testing,nano-alumina interacted with organic montmorillonite,and nano-alumina and montmorillonite nano-thin layers were interlaced.It proved that nano-alumina had the function of promoting the dispersion of montmorillonite thin layer,and this microstructure made the novel nano-material have excellent properties.