纳米纤维素丙烯腈-丁二烯-苯乙烯复合材料的特性
发布时间：2019-04-24 06:51
【摘要】：为了改善纳米纤维素晶须(CNC)在非亲水性树脂中应用时分散困难、热分解温度低、与基体相容性较差等缺点,将冷冻干燥的纳米纤维素在高聚物的有机溶液中预先包覆,然后与苯乙烯-丁二烯-丙烯腈树脂(ABS)、马来酸酐接枝聚乙烯在挤出机内熔融共混制成ABS/CNC复合材料。通过扫描电镜(SEM)、热重分析测试(TGA)、拉伸性能测试等手段对复合材料进行性能表征。SEM观察发现CNC是以层状纳米片的形式均匀地与ABS复合;力学性能测试表明,接枝聚乙烯的加入有利于改进CNC与ABS的界面相容性,与纯ABS相比,添加0.7%CNC的复合材料其拉伸强度提高了156%,弹性模量提高了52%。TGA测试结果表明,CNC的热分解温度由211℃提高到263℃,大大改善了CNC在聚合物加工过程中的温度适应性。
[Abstract]:In order to improve the disadvantages of nano-cellulose whisker (CNC) in the application of non-hydrophilic resin, such as difficult dispersion, low thermal decomposition temperature and poor compatibility with matrix, freeze-dried nano-cellulose was pre-coated in organic solution of polymer. Then ABS/CNC composites were prepared by melt blending with styrene-butadiene-acrylonitrile resin (ABS), maleic anhydride grafted polyethylene in an extruder. The tensile properties of (TGA), composites were characterized by scanning electron microscopy (SEM),) thermal gravimetric analysis (TGA). It was found that CNC composite with ABS in the form of lamellar nano-sheets. Mechanical properties tests show that the addition of grafted polyethylene is beneficial to improve the interfacial compatibility of CNC and ABS. Compared with pure ABS, the tensile strength of the composites added with 0.7%CNC is increased by 156%. The results of 52%.TGA test showed that the thermal decomposition temperature of CNC was increased from 211 鈩，
本文编号：2464209
[Abstract]:In order to improve the disadvantages of nano-cellulose whisker (CNC) in the application of non-hydrophilic resin, such as difficult dispersion, low thermal decomposition temperature and poor compatibility with matrix, freeze-dried nano-cellulose was pre-coated in organic solution of polymer. Then ABS/CNC composites were prepared by melt blending with styrene-butadiene-acrylonitrile resin (ABS), maleic anhydride grafted polyethylene in an extruder. The tensile properties of (TGA), composites were characterized by scanning electron microscopy (SEM),) thermal gravimetric analysis (TGA). It was found that CNC composite with ABS in the form of lamellar nano-sheets. Mechanical properties tests show that the addition of grafted polyethylene is beneficial to improve the interfacial compatibility of CNC and ABS. Compared with pure ABS, the tensile strength of the composites added with 0.7%CNC is increased by 156%. The results of 52%.TGA test showed that the thermal decomposition temperature of CNC was increased from 211 鈩，
本文编号：2464209
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