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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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碳纳米纤维与环氧树脂单体相互作用的分子动力学模拟
DOI: 10.11777/j.issn1000-3304.2015.15053, PP. 1158-1164
Keywords: 分子动力学模拟,环氧树脂,碳纳米纤维,界面相,相互作用
Abstract:
利用分子动力学模拟方法,以双酚A型环氧树脂(DGEBA)和异佛尔酮二胺(IPD)分子为研究对象,对环氧树脂单体体系与碳纳米纤维表面之间的相互作用进行了分析.研究结果表明,环氧树脂单体分子受到碳纳米纤维的吸引作用,能够在碳纳米纤维表面形成了浓度较高的界面相,且在界面相内IPD分子浓度高于其体相浓度,而DGEBA分子浓度低于其体相浓度;界面相内,DGEBA的分子结构更加伸展,而IPD分子结构未发生明显变化;碳纳米纤维表面能够抑制界面相内单体分子的运动,其中在垂直于表面方向上的抑制作用最强.通过分析单体分子的结合能密度可知,碳纳米纤维与IPD分子的结合强度大于其与DGEBA分子的结合强度,这与前面的结果相吻合.
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