高校化学工程学报2011，Vol.25Issue(1)：177-181,5.
HDPE/纳米SiO2杂化材料的动态流变行为研究
The Study of the Dynamic Rheological Behavior of the HDPE/Nano-SiO2 Hybrid Materials
摘要
Abstract
Vinyl trimethoxysilane (VTMS) was grafted to the chain of the high density-polyethylene (HDPE) via melt grafting reaction. The tetraethoxysilane (TEOS) which acts as precursor was mixed with grafted HDPE,and then the HDPE/SiO2 hybrid materials were prepared by sol-gel process. The dynamic rheological behavior of the prepared high density-polyethylene/nano-silica hybrid composites was investigated by plate rheometer.Experimental results show that the complex viscosity (η*) of the composites increases with increasing the content of SiO2. When the SiO2 content of the hybrid composite reaches 1.2％, its complex viscosity η* increases suddenly and the shear thinning behavior appears. In the low frequency region, both the curves of the storage module G' vs. frequency ω and loss module G" vs. ω of the HDPE/SiO2 appear a second flat; and on the curve of the strain γ vs. storage module G', there appears two linear viscoelastic sections. These phenomena can be attributed to the links between the nano-SiO2 particles and polymer matrix in the hybrid system by chemical bonds and the uniform distribution of the nano-SiO2 particles; while when the nano-SiO2 content reaches 1.2％, the "solid-like" behavior may occur between the particles.关键词
高密度聚乙烯/纳米SiO2/杂化材料/动态流变Key words
high density-polyethylene/ nano-SiO2/ hybrid material/ dynamic rheology分类
通用工业技术引用本文复制引用
施海华,周井隆,龚方红,熊煦,刘春林,陶国良..HDPE/纳米SiO2杂化材料的动态流变行为研究[J].高校化学工程学报,2011,25(1):177-181,5.基金项目
常州大学科研基金资助项目(07020030). （07020030）
