成膜剂和剪切场对GF/PET结构与性能影响  

Effect of Filmogens and Melt Flow Field on Properties of Glass Fiber/Polyethylene Terephthalate

作　　者：郭少华[1] 张永伟[1] 吴智华[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《现代塑料加工应用》2007年第1期37-41,共5页Modern Plastics Processing and Applications

摘　　要：采用不同的成膜剂处理玻纤(GF),改变制备试样过程中熔体流动场剪切速率来挤出制备了GF/聚对苯二甲酸乙二醇酯(PET)复合材料。通过测定PET及GF/PET复合材料试样流变性能和纵向拉伸强度,研究成膜剂和熔体剪切速率对GF/PET复合材料结构和性能的影响。结果表明,聚合物成膜剂与硅烷偶联剂并用处理GF,能提高GF/PET复合材料的力学性能,低相对分子质量PET成膜剂处理后的GF与PET的粘结性很好;在熔融成型GF/PET复合材料试样过程中,剪切速率影响GF在复合材料中取向,试样力学强度对应有最佳的熔体流动场剪切速率。Glass fiber was treated with different filmogens. GF/PET composites were prepared by extrusion in which the shear rate of melt flow field could be controlled. The longitudinal tensile strength and the theological properties of the GF/PET composties and the PET were tested. The effects of filmogens and melt flow field on the properties and the structure of the GF/PET composites were discussed. The results show that mechanical properties of the GF/PET composites are improved by using both polymer filmogens and silane coupling agent in the GF treatment process. Low molecular weight PET filmogens has the best reinforcement effect. During melt molding process, the orientation of GF in the composites is influenced by shear rate,and the mechanical properties of the GF/PET composites are optimized at a proper shear rate.

关 键 词：成膜剂 熔体流动场 玻纤增强聚对苯二甲酸乙二醇酯 性能 

分 类 号：TQ327[化学工程—合成树脂塑料工业]