Synthesis and nonisothermal reaction of a novel acrylonitrile-capped poly(propyleneimine) dendrimer with epoxy resin
作者:Jintao Wan、Hong Fan、Bo-Geng Li、Cun-Jin Xu、Zhi-Yang Bu
DOI:10.1007/s10973-010-1006-3
日期:2011.2
A novel acrylonitrile-capped poly(propylene imine) dendrimer (PAN4) was synthesized and characterized with FTIR and 1H-NMR. PAN4 and its precursor (poly(propylene imine) dendrimer (1.0GPPI) were employed to cure bisphenol A epoxy resin (DGEBA), and the nonisothermal reaction kinetics of DGEBA/PAN4 and DGEBA/1.0GPPI was systematically investigated using a differential scanning calorimeter (DSC) in a
合成了一种新型的丙烯腈封端的聚丙烯(亚胺)树枝状聚合物(PAN4),并用FTIR和1 H-NMR表征。使用PAN4及其前体(聚丙烯亚胺)树状大分子(1.0GPPI)来固化双酚A环氧树脂(DGEBA),并使用差示扫描量热仪(DDS)对DGEBA / PAN4和DGEBA / 1.0GPPI的非等温反应动力学进行了研究( DSC),用基辛格法测定的表观活化能对于DGEBA / 1.0GPPI为59.7 kJ / mol,对于DGEBA / PAN4为53.9 kJ / mol,应用Málek方法发现,两参数自催化模型(SB(m,n))可以很好地模拟反应速率,并且对反应速率常数的进一步分析显示,与1.0GPPI对照相比,PAN4可以以大大降低的速率将DGEBA固化10倍以上。