摘要
采用工业碱木质素合成环氧树脂,在空气气氛下利用非等温热失重技术研究木质素基环氧树脂(LGEP)固化特征。采用自催化反应模型计算得到了LGEP体系的固化反应动力学参数,并得到LGEP体系的固化反应动力学模型。结果表明,自催化反应模型得到的模拟曲线与实验得到的DSC曲线的一致性较好。利用外推法得到了LGEP体系的固化凝胶温度Ti0=454.88K,固化温度Tp0=507.55K,后处理温度Tf0=598.77K。通过比较得出实验结果与模型计算值较一致。
Synthesis of lignin base epoxy resin with industry alkali lignin was carried, the curing characteristics of lignin based epoxy resin were analyzed with the non-isothermal TG method in the oxygen atmosphere. Kinetic parameters of the epoxy resin system were calculated by autocatalysis reaction model, and the curing reaction kinetics model of LGEP sys- tem were obtained. The experimental results illustrated that the calculation result of the established model was well in line with the experimental results. Initial curing temperature rio = 454. 88K, curing temperature Tp0 = 507. 55K, and terminal temperature Tf0 = 598. 77K of LGEP system were obtained by extrapolation method. Through the comparison the experi- mental result to be consistent with the model predicted value was finded.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第9期126-128,183,共4页
New Chemical Materials
基金
安徽省教育厅自然科学基金重点项目(KJ2012A070)
安徽理工大学中青年学术骨干项目
