Relationship between structure and properties in high-performance PA6/SEBS-g-MA/(PPO/PS) blends: The role of PPO and PS
Relationship between structure and properties in high-performance PA6/SEBS-g-MA/(PPO/PS) blends: The role of PPO and PS
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DOI：
10.1002/app.45281
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发表时间：
2017-05
影响因子：
3
通讯作者：
Yijian Wu;Hui Zhang;Baoqing Shentu;Z. Weng
中科院分区：
文献类型：
--
作者：
Yijian Wu;Hui Zhang;Baoqing Shentu;Z. Weng
研究了聚苯醚(PPO)和聚苯乙烯(PS)在尼龙6(PA6)/接枝马来酸酐(SEBS-g-MA)共混物中的增韧作用。通过扫描电子显微镜和力学性能测试，研究了PPO/PS质量比和用量对PA6/SEBS-g-MA/(PPO/PS)共混物形态和力学性能的影响。在界面张力和铺展系数的驱动下，PPO/PS(核)和SEBS-g-MA(壳)形成的“核-壳”粒子在增韧PA6共混物中起着关键作用。由于PS的低粘度改善了“核-壳”粒子的分布，PPO保证了PPO/PS相的缠结密度，PPO/PS的质量比为3/1时共混物具有最佳的力学性能。在一定范围内，随着PPO/PS含量的增加，可以提供更有效的增韧粒子，从而带来更好的力学性能。因此，通过调整PPO和PS的质量比和含量，可以得到冲击强度高、拉伸强度高、热变形温度好的PA6/SEBS-g-MA/(PPO/PS)共混物。©2017威利期刊公司J.应用。波兰姆。SCI。2017年，134,45281。
This work aimed at studying the role of poly(phenylene oxide) (PPO) and polystyrene (PS) in toughening polyamide-6 (PA6)/styrene-ethylene-butadiene-styrene block copolymer grafted with maleic anhydride (SEBS-g-MA) blends. The effects of weight ratio and content of PPO/PS on the morphology and mechanical behaviors of PA6/SEBS-g-MA/(PPO/PS) blends were studied by scanning electron microscope and mechanical tests. Driving by the interfacial tension and the spreading coefficient, the “core–shell” particles formed by PPO/PS (core) and SEBS-g-MA (shell) played the key role in toughening the PA6 blends. As PS improved the distribution of the “core–shell” particles due to its low viscosity, and PPO guaranteed the entanglement density of the PPO/PS phase, the 3/1 weight ratio of PPO/PS supplied the blends optimal mechanical properties. Within certain range, the increased content of PPO/PS could supply more efficient toughening particles and bring better mechanical properties. Thus, by adjusting the weight ratio and content of PPO and PS, the PA6/SEBS-g-MA/(PPO/PS) blends with excellent impact strength, high tensile strength, and good heat deflection temperature were obtained. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45281.