A non-bisphenol-A epoxy resin with high Tg derived from the bio-based protocatechuic Acid:Synthesis and properties
作者:Xingrong Chen、Jiaren Hou、Qun Gu、Qinhong Wang、Junfei Gao、Jing Sun、Qiang Fang
DOI:10.1016/j.polymer.2020.122443
日期:2020.5
66 ppm/°C, which was lower than 72 ppm/°C of cured DGEBA resin. The curing kinetics of PA-EP/DDM system was also investigated, indicating that the curing process was a pseudo first order reaction (n = 0.94) and the activation energy was about 54.17 kJ/mol. Because protocatechuic acid is produced through the bio-transformation of glucose, this contribution may provide a new method for the preparation of
通过原儿茶酸(PA)与环氧氯丙烷一锅反应合成了一种新型的生物型非双酚A型环氧(PA-EP)树脂。通过4,4'-二氨基二苯甲烷(DDM)固化该树脂,得到的交联网络显示出超过250°C的玻璃化转变温度(T g),远高于固化的市售双酚-环氧树脂(DGEBA)(189°C)。固化的PA-EP树脂还显示出66 ppm /°C的热膨胀系数(CTE),低于固化的DGEBA树脂的72 ppm /°C 。PA-EP / DDM的固化动力学还研究了该体系,表明固化过程是拟一级反应(n = 0.94),活化能约为54.17 kJ / mol。由于原儿茶酸是通过葡萄糖的生物转化而产生的,因此这一贡献可能为制备非双酚A高性能环氧树脂提供了一种新方法,并为生物基转化提供了新途径。原儿茶酸。