Environmental stress cracking (ESC) resistance of polycarbonate/SiO2 nanocomposites in different media
Environmental stress cracking (ESC) resistance of polycarbonate/SiO2 nanocomposites in different media
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DOI：
10.1002/app.45451
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发表时间：
2017-11-15
影响因子：
3
通讯作者：
Schlarb, Alois K.
中科院分区：
文献类型：
--
作者：
Nomai, Jiraporn;Schlarb, Alois K.
采用双螺杆挤出成型技术制备了不同纳米sio2含量的聚碳酸酯（PC）纳米复合材料。研究了纳米复合材料的力学性能和抗环境应力开裂性能。与纯PC相比，纳米填料的掺入导致杨氏模量、拉伸强度和缺口冲击强度性能略有改善。有趣的是，纳米填料显著提高了PC在不同流体（异丙醇、甲醇、尿素水溶液和去离子水）中的抗环境应力开裂性能。I型临界应力强度因子与Hansen溶解度参数的相关性表明，对于不同的流体具有很好的一致性，从而可以预测不同应力裂解剂的应力裂解行为作为填料含量的函数。(c) 2017 Wiley期刊公司j:。变异较大。自然科学学报，2017,34(4):45451。
Polycarbonate (PC) nanocomposites containing different nano-SiO2 contents were prepared using a twin-screw extruder followed by injection molding. The mechanical behavior and environmental stress cracking (ESC) resistance of the nanocomposites were investigated. Compared to neat PC, the incorporation of nanofiller leads to a slight improvement in Young's modulus, tensile strength, and notched impact strength properties. Interestingly, the nanofiller enhanced the environmental stress cracking resistance of PC in different fluids (isopropanol, methanol, aqueous urea solution, and deionized water) vastly. The correlation of the mode I critical stress intensity factor with the Hansen solubility parameter shows a very good agreement for different fluids and thus allows the prediction of the stress cracking behavior as a function of the filler content for different stress-cracking agents. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45451.