SGF/HDPE/PP体系在双向应力场中的取向研究  

Studies on orientation of SGF/HDPE/PP pipes extruded by two-dimensional compound stress field die

作　　者：袁毅[1] 黄朗[1] 徐少虎[1] 申开智[2] 

机构地区：[1]重庆工商大学机械工程学院,废油资源化技术与装备教育部工程研究中心,重庆400067 [2]四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,四川成都610065

出　　处：《功能材料》2011年第B11期875-877,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(10590351);重庆市科技攻关计划资助项目(CSTC,2010AC4062)

摘　　要：利用自行设计制造的剪切拉伸双向复合应力场挤管装置生产出了短玻璃纤维/高密度聚乙烯/聚丙烯(SGF/HDPE/PP)双向增强管材。采用大角X射线衍射法(WAXRD)和扫描电镜(SEM)研究分析了SGF/HDPE/PP双向增强管材内的玻璃纤维和聚合物分子的取向分布。结果表明,在剪切拉伸双向复合应力场的诱导下,SGF/HDPE/PP双向增强管材内的玻璃纤维已形成了同时沿管材的轴向和周向的双向取向分布;增强管材内部的聚合物分子已被明显地拉长变形,并在沿135°角的方向上获得了较好的取向分布,因而可同时改善管材的轴周向性能。By shearing-drawing two-dimensional compound stress field die developed by the authors,two-dimensional reinforcement short glass fiber/high density polyethylene/polypropylene（SGF/HDPE/PP） pipes were extruded.The orientation behaviors of glass fiber and polymer molecule of these pipes were studied by wide-angle X-ray diffraction（WAXRD） and scanning electron microscope（SEM） in this paper.The results indicate that due to the inducement of the shearing-drawing two-dimensional compound stress field,the glass fiber of these pipes is oriented along the circular and axial directions of pipe at the same time.But the polymer molecule is oriented at a slope of 135°.Moreover,they are drawed oneself up and deformed.So the two-dimensional properties of SGF/HDPE/PP pipes can be improved by the die at the same time.

关 键 词：双向应力场 挤管模 SGF/HDPE/PP管材 诱导 取向 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]