摘要
为提高环氧树脂的热性能,用动态DSC对笼型β-氨乙基-γ-氨丙基倍半硅氧烷(POAAS)/E-51环氧树脂体系的固化过程进行研究,表明N=0.5为最佳配比,固化反应放热峰值温度Tp为82℃,反应终了温度Tf为135℃。依据Kissinger方程求得固化反应的活化能为50.26 kJ/mol,依据Crane方程得固化反应级数为1.126,固化反应动力学的数学模型为da/dt=4.08×106exp(-50255/8.314T)(1-a)1.126。
In order to improve the thermal properties of epoxy resins, the curing reaction of Octa [N-（β-aminoethyl）-r-amino-propyl] silsesquioxanes （POAAS）/ E-51 was studied by means of differential scanning calorimetry （DSC）. From the DSC testing results, a curing process was proposed and the curing reaction peak temperature Tp is 82 ℃ , the final curing temperature Tf is 135 ℃. The apparent reaction activation energy Ea is 50.26 kJ/mol, reaction order is 1.126 according to Kissinger method and Crane theory. The curing reaction mathematic model is da/dt = 4.08 × 10^6 exp（ - 50255/ 8.314T）（1 -a）^1. 126 for the curing reaction of POAAS/E-51 composite system.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2008年第9期123-126,共4页
Polymer Materials Science & Engineering
基金
河北省自然科学基金资助项目(E2007000204)
