摘要
采用差示扫描量热法研究了以聚乙二醇(PEG)接枝改性的纳米炭黑(NC)(NC-PEG)为填料对环氧树脂/4,4-二氨基二苯砜非等温固化反应的影响,通过Flynn-Wall-Ozawa法和Malek法确定了固化反应的动力学参数。结果表明:两参数的自催化模型能够很好地描述环氧树脂及其复合材料的固化反应过程,各试样的模型拟合结果与实验数据相吻合。NC-PEG能够促进环氧树脂的固化,使固化活化能降低,其中,NC-PEG用量为3 phr时,活化能最低。
The influence of polyethylene glycol（PEG） grafted nano-carbon black（NC-PEG） as filler on non-isothermal cure reaction of epoxy resin/4,4′-diaminodiphenylsulphone（DDS） was studied by differential scanning calorimetry（DSC）.The kinetics parameters of the curing process were determined by Flynn-Wall-Ozawa method and Malek method.The results indicate that a two-parameter autocatalytic model is adequate to describe the cure kinetics of the epoxy resin and its composites.The experimental curves are in good agreement with the simulation results deduced from the model for every specimen.NC-PEG can facilitate cure reaction of the epoxy resin and decrease the curing activation energy.The minimum activation energy appears in case the NC-PEG content is 3 phr.
出处
《合成树脂及塑料》
CAS
北大核心
2012年第1期32-35,共4页
China Synthetic Resin and Plastics
关键词
环氧树脂
纳米炭黑
固化动力学
差示扫描量热法
epoxy resin
nano-carbon black
cure kinetics
differential scanning calorimetry
