HDPE/GN非等温结晶动力学研究  

Preparation and non-isothermal crystallization kinetics of HDPE/GN

作　　者：谢普[1,2,3] 于杰[1,2,3] 秦军[1,2] 吕晴[2] 邓青[4] 黄浩[1,3] 许国杨[1,2] 

机构地区：[1]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [2]喀斯特环境与地质灾害防治教育部重点实验室(贵州大学),贵州贵阳550003 [3]贵州大学材料与冶金学院,贵州贵阳550003 [4]贵州大学林学院,贵州贵阳550003

出　　处：《炭素技术》2010年第5期15-19,共5页Carbon Techniques

基　　金：贵州大学研究生创新基金(省研理工2009001);国家科技支撑计划项目(2007BAB08B05);喀斯特环境与地质灾害防治教育部重点实验室开放基金课题(2008K-4)

摘　　要：通过Hummers法制备出氧化石墨,在水溶液中直接超声分散30min后用联氨对其还原,可制得石墨烯,将所得产品与高密度聚乙烯在双螺杆挤出机中熔融挤出。利用DSC和莫氏方程对复合材料的非等温结晶动力学进行了研究,结果表明:石墨烯抑制了高密度聚乙烯(HDPE)的结晶行为;莫氏方程能很好地反映复合材料真实的结晶行为。Graphene was produced by ultrasonic dispersion in aqueous solution about 30min and reduction with hydrazine from graphite oxide prepared by Hummer method. And graphene was blended with high- density polyethylene（HDPE） in the twin- screw extruder to prepare the HDPE/GN composites. The non- isothermal crystallization of kinetics of samples were extensively studied by differential scanning calorimetry （DSC） and Mo＇s equation. The Mo＇s equation analysis results show that the crystallization rate of composite is slower than that of pure HDPE, and it can be well reflected the crystallization behavior of composite materials.

关 键 词：石墨烯 复合材料 结晶动力学 莫氏方程 

分 类 号：TB332[一般工业技术—材料科学与工程] O613.7[理学—无机化学]