Mechanical Properties and Tensile Deformation Behavior of Polyamide 6/Maleated and Unmaleated Ethylene Propylene Diene Terpolymer/Nano-CaCO3 Ternary Composites
Mechanical Properties and Tensile Deformation Behavior of Polyamide 6/Maleated and Unmaleated Ethylene Propylene Diene Terpolymer/Nano-CaCO3 Ternary Composites
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聚酰胺6/马来化和非马来化乙烯丙烯二烯三元共聚物/纳米CaCO3三元复合材料的力学性能和拉伸变形行为
DOI：
10.1080/00222348.2012.733293
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发表时间：
2013-03
影响因子：
1.4
通讯作者：
Wang, Xu
中科院分区：
文献类型：
--
作者：
Dong, Yu-Xin;Fu, Li-Dan;Xu, Xiang-Bin;Wang, Xu
采用两步共混法制备了尼龙6（PA 6）、马来酸酐接枝三元乙丙橡胶（EPDM-g-MA）和未马来酸酐接枝三元乙丙橡胶（EPDM）的混合物（EPDM-M）、纳米碳酸钙（nano-CaCO 3）三元复合材料。用扫描电子显微镜（SEM）观察了EPDM-M包埋纳米CaCO 3团聚体后的砂袋微观结构。在单向拉伸过程中的复合材料的变形进行了研究，通过视频辅助拉伸试验。通过SEM和动态力学分析（DMA）研究了复合材料的微观结构和界面相互作用。与不含沙袋微结构的PA 6/EPDM-M/nano-CaCO 3三元复合材料（E2）相比，具有沙袋微结构的PA 6/EPDM-M/nano-CaCO 3三元复合材料（E3）的微观结构形态表明，沙袋微结构中的nano-CaCO 3团聚体和EPDM-M同时拉伸和脱粘形成了大量的微纤和空穴，这导致更高的体积应变和更大的能量耗散量。E3中沙袋微结构与PA 6基体间界面相互作用较好，与无沙袋微结构的E2相比，前者的α-松弛温度较低，更容易传递外部能量。结果表明，在PA 6/EPDM-M/nano-CaCO 3三元复合材料中，沙袋颗粒的存在使PA 6的拉伸屈服变形由偏塑性向偏塑性转变。
Ternary composites composed of polyamide 6 (PA6), a mixture of maleated (EPDM-g-MA) with unmaleated ethylene propylene diene terpolymer (EPDM) rubber at weight ratio 80/20 (defined as EPDM-M), and nano-calcium carbonate (nano-CaCO3) were prepared by a two-step compounding route. Sandbag microstructure, in which nano-CaCO3 agglomerates were embedded EPDM-M, were observed by scanning electron microscopy (SEM). Deformation of the composites was studied by video-aided tensile tests during uniaxial tension. The microstructural morphology and interfacial interaction were investigated through SEM and dynamic mechanical analysis (DMA). Compared to PA6/EPDM-M/nano-CaCO3 ternary composites without sandbag microstructure (E2), the microstructural morphology of PA6/EPDM-M/nano-CaCO3 ternary composites with sandbag microstructure (E3) showed that numerous microfibrils and cavitations were formed by simultaneously stretching and debonding of nano-CaCO3 agglomerates and EPDM-M in the sandbag microstructure, which resulted in a higher volume strain and larger quantity of energy dissipation. Additionally, better interfacial interaction between the sandbag microstructure and PA6 matrix in E3 caused a lower α-relaxation temperature and easier external energy transmission than E2 without sandbag microstructure. Consequently, the presence of the sandbag particles in PA6/EPDM-M/nano-CaCO3 ternary composites changed the tensile yield deformation of PA6 from a more deviatoric plasticity to a more dilatational plasticity.
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影响因子：
3.2
作者：
Károly Renner;S. Henning;J. Móczó;M. Yang;H. Choi;B. Pukánszky
通讯作者：
Károly Renner;S. Henning;J. Móczó;M. Yang;H. Choi;B. Pukánszky
温度和应变速率对聚酰胺6拉伸变形的影响
影响因子：
4.6
作者：
Shan, Gui-Fang;Yang, Wei;Fu, Qiang
通讯作者：
Fu, Qiang
影响因子：
2.6
作者：
Bai, SL;Wang, M;Zhao, XF
通讯作者：
Zhao, XF
影响因子：
4.6
作者：
M. Jerabek;Z. Major;Károly Renner;J. Móczó;B. Pukánszky;R. Lang
通讯作者：
M. Jerabek;Z. Major;Károly Renner;J. Móczó;B. Pukánszky;R. Lang
DOI：
10.4028/www.scientific.net/amr.47-50.694
发表时间：
2008-06
期刊：
Advanced Materials Research
影响因子：
--
作者：
Szu-Hui Lim;Z. Yu;Y. Mai
通讯作者：
Szu-Hui Lim;Z. Yu;Y. Mai