Effect of Nanoplatelets on the Rheological Behavior of Epoxy Monomers
Effect of Nanoplatelets on the Rheological Behavior of Epoxy Monomers
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DOI：
10.1002/mame.200800258
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发表时间：
2009-02
影响因子：
3.9
通讯作者：
Luyi Sun;W. Boo;Jia Liu;A. Clearfield;H. Sue;N. Verghese;H. Pham;J. Bicerano
中科院分区：
文献类型：
--
作者：
Luyi Sun;W. Boo;Jia Liu;A. Clearfield;H. Sue;N. Verghese;H. Pham;J. Bicerano
研究了纳米片层剥离程度和长径比对环氧树脂单体流变性的影响。结果表明，剥离纳米片在环氧树脂中的存在会显著影响粘度，并导致剪切变稀现象，特别是当纳米片的长径比较大时。利用Krieger-Dougherty模型，定量描述了纳米片改变环氧树脂流变行为的有效性，并与实验结果进行了比较。对观察到的流变行为的可能物理原因进行了讨论。并指出了本研究对聚合物纳米复合材料加工的意义。
The effect of nanoplatelets on the rheological behavior of epoxy monomers with variations in nanoplatelet exfoliation level and aspect ratio was investigated. The results show that the presence of exfoliated nanoplatelets in epoxy can significantly influence viscosity and lead to shear-thinning phenomena, especially when the aspect ratio of the nanoplatelets is high. By employing the Krieger-Dougherty model, the effectiveness of nanoplatelets in altering epoxy rheological behavior was quantitatively described and compared with experimental findings. Possible physical reasons for the observed rheological behaviors are discussed. The implication of the present study for polymer nanocomposites processing is also addressed.