摘要
采用博力飞黏度计测试竹炭改性聚酯熔体的流变性能,对其黏度、非牛顿指数、结构黏度指数进行分析。结果表明：竹炭改性聚酯表现为切力变稀流体,竹炭母粒的加入明显降低了纯聚酯的非牛顿指数,且使结构黏度指数较大幅度提高,可加工性降低,在挤出成型加工的剪切速率范围内（γ=103~104 s-1）,熔体黏度较为稳定因,此适当降低成型温度有利于挤出成型的稳定性。
The rheological behavior of molten bamboo charcoal modified polyester were studied using Brookfield viscometers,and the viscosity,non-Newtonian index,and structural viscosity index were analyzed.The results show that molten bamboo charcoal modified polyester exhibits shear thinning fluid,non-Newtonian index decreases significantly and structural viscosity index increases obviously with the addition of bamboo charcoal masterbatch,but the viscosity is stable in the shear rate range of extrusion（γ=103~104 s-1）.The molding temperature is reduced properly which is beneficial to the stability of extrusion processing.
出处
《塑料科技》
CAS
北大核心
2011年第5期76-79,共4页
Plastics Science and Technology
基金
河南省科技厅重点攻关项目(082102280002)
河南工程学院青年科研基金项目(Y09006)
关键词
竹炭改性聚酯
流变行为
黏度
非牛顿指数
结构黏度指数
Bamboo charcoal modified polyester
Rheological behavior
Viscosity
Non-Newtonian index
Structural viscosity index
