Viscoelastic behaviour and modelling of nano and micro TiO2 powder-epoxy resin composites

G.C. Papanicolaou, L.C Kontaxis, A.E. Manara
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引用次数: 8

Abstract

Epoxy resin composites reinforced with different weight fractions of TiO2 micro-particles 0.2 μm in size (1%, 5%, 10%, 15%wt) and of TiO2 nano-particles 21 nm in size (0.5%, 1%, 3%wt) were manufactured. The quasi-static mechanical properties of both nano-composites and micro-composites were investigated and compared through tensile testing. The experimental results were predicted and the degree of matrix-particle adhesion and particle dispersion were evaluated, by the Property Prediction Model (PPM) developed by the first author. The composites were also subjected to creep-recovery tests as well as to relaxation tests in order to investigate their viscoelastic behaviour. The experiments were carried out at different filler-weight fractions and loading conditions. Non-linear viscoelastic behaviour was observed in all cases and appropriate models were applied in order to describe, and/or predict the viscoelastic behaviour of all materials tested. A fair agreement between experimental results and theoretical predictions was observed for both viscoelastic and static results.

纳米和微TiO2粉末-环氧树脂复合材料的粘弹性行为和建模
制备了粒径为0.2 μm的TiO2微粒子(1%、5%、10%、15%wt)和粒径为21 nm的TiO2纳米粒子(0.5%、1%、3%wt)的不同质量分数增强环氧树脂复合材料。通过拉伸试验对纳米复合材料和微复合材料的准静态力学性能进行了研究和比较。利用本文第一作者开发的性能预测模型(PPM)对实验结果进行了预测,并对基质-颗粒的粘附程度和颗粒的分散程度进行了评价。为了研究复合材料的粘弹性行为,还对复合材料进行了蠕变恢复试验和松弛试验。试验在不同填料质量分数和加载条件下进行。在所有情况下都观察到非线性粘弹性行为,并应用适当的模型来描述和/或预测所有测试材料的粘弹性行为。粘弹性和静力的实验结果与理论预测基本一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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