摘要
用双螺杆挤出共混法制备了高抗冲聚苯乙烯 (HIPS) 有机蒙脱土 (Org MMT)插层纳米复合材料以及HIPS 无机蒙脱土 (MMT)常规复合材料 .分别用TGA和毛细管流变仪研究了它们的热性能与流变性能 ,并比较了两种结构材料的性能差异 .结果表明 ,纳米复合材料比纯HIPS和常规的复合材料具有更好的热稳定性和流动性 ,前者具有更强的剪切变稀行为 .此外 ,当蒙脱土达到纳米级分散时 ,复合材料的表面也变得更加平整光滑 .
High-impact polystyrene (HIPS)/organomontmorillonite (Org-MMT) nanocomposites and HIPS/inorganic montmorillonite (MMT) conventional composites were prepared by melt processing using a twin-screw extruder. Their thermal and rheological properties were studied by using TGA and capillary rheometer, respectively. The differences in properties between the two types of composites were examined. The results show that the nanocomposite has better thermal stability and flowing properties than pristine HIPS or the conventional composite,and the former has a more outstanding shear-thinning behavior. In addition, when the montmorillonite is dispersed in nanoscale, the surface quality of the composites is improved evidently.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2005年第1期102-107,共6页
Acta Polymerica Sinica
