NON-ISOTHERMAL CURE KINETICS OF MESOGEN-JACKETED LIQUID CRYSTAL POLYMER PBPCS MODIFIED EPDXY RESIN

作者：Li, Xiao-jing^*; Chai, Chun-peng; Li, Chang-feng; Li, Guo-ping; Luo, Yun-Jun; Fan, Xing-he; Shen, Zhi-hao; Zhou, Qi-feng

来源：Acta Polymerica Sinica, 2013, (9): 1190-1196.

• Epoxy resin
• Mesogen-jacked liquid crystal polymer
• Cure kinetics
• Modify

Curing process and curing kinetics of poly {2, 5-his [(4-butyloxyphenyl) oxycarbonyl] styrene/epoxy resin/methyl tetrahydrophthalic anhydride, PBPCS/E-51/MeTHPA, systems were investigated by differential scanning calorimetry (DSC) using the non-isothermal method under different heating rates. Apparent activation energy of the curing systems was calculated by Kissinger method and Ozawa method respectively, and the reaction series were computed by means of Crane formula, then the kinetic equation was concluded. The results indicated that the curing process of the curing reactions followed the first order reaction, and the addition of PBPCS didn ' t change the curing mechanism of epoxy resin. So mesogen-jacketed liquid crystal polymers could be used for the modification research of epoxy resin. Based on the data of DSC, the optimized curing process of the curing systems is 90 degrees C /2h -> 1.20 degrees C/2h -> 140 degrees C /1. 5h. The results would provide a theoretical basis for curing, performance test and application of PBPCS/E-51/MeTHPA systems, and for epoxy resins modified with mesogen-jacketed liquid crystal polymers.

• 出版日期2013-9-20
• 单位北京大学