Mechanical and morphological properties of a ternary polyamide 6 nanocomposite with optimized stiffness/toughness performance
Mechanical and morphological properties of a ternary polyamide 6 nanocomposite with optimized stiffness/toughness performance
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DOI：
10.1002/pen.23558
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发表时间：
2014-02
影响因子：
3.2
通讯作者：
Simon Geier;C. Bonten
中科院分区：
文献类型：
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作者：
Simon Geier;C. Bonten
在开发新的聚合物时，高水平的刚性和同时坚韧的材料行为是一个重要的目标。这项研究显示了一种新的方法，以优化刚度/韧性行为的聚酰胺6（PA 6），同时纳入刚性和弹性体纳米填料在熔融复合。为了增强PA 6的刚度，使用了有机改性的层状硅酸盐（有机粘土），而为了补偿韧性，应用了纳米结构的PA 6/聚醚嵌段共聚物（PA 6-copo）。在第一步中，二元纳米复合材料已被调查，从而形态和机械性能之间的相关性已被导出。随后，这些结果已被用来适应三元纳米复合材料的加工条件。尽管两种纳米填料之间存在相当大的相互作用，但PA 6纳米复合材料的刚度/韧性平衡已显着优化。当有机粘土和PA 6-copo的质量分数分别为8%和8.3%时，PA 6的弹性模量和拉伸强度分别提高了55%和18%。此外，尼龙6的缺口冲击强度也提高了58%. Polym.工程科学，54：247-254，2014.© 2013年塑料工程师协会
While developing new polymers, a high level of stiff and simultaneously tough material behavior is an important goal. This study shows a new approach to optimize the stiffness/toughness behavior of polyamide 6 (PA 6) by incorporating both stiff and elastomeric nanofillers during melt compounding. For stiffness enhancement of PA 6, an organic-modified layered silicate (organoclay) was used, whereas to compensate for the toughness properties, a nanostructured PA 6/polyether block copolymer (PA 6-copo) was applied. In the first step, binary nanocomposites have been investigated whereby correlations between morphological and mechanical properties have been derived. Subsequently, these results have been used to adapt the processing conditions for the ternary nanocomposites. Despite a considerable interaction of both nanofillers the stiffness/toughness balance of the PA 6 nanocomposite has been optimized significantly. At a filler content of only 8 mass% organoclay and 8.3 mass% PA 6-copo, Young's modulus and tensile strength of PA 6 could be increased by 55% and 18%, respectively. In addition, the notched impact strength of PA 6 was enhanced substantially by 58%. POLYM. ENG. SCI., 54:247–254, 2014. © 2013 Society of Plastics Engineers