| 桐油改性双环戊二烯不饱和树脂的固化研究 |
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| 引用本文： | 崔竞方,谭卫红,刘承果,周永红.桐油改性双环戊二烯不饱和树脂的固化研究[J].热固性树脂,2013(2):13-17. |
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| 作者姓名： | 崔竞方 谭卫红 刘承果 周永红 |
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| 作者单位： | 中国林业科学研究院林产化学工业研究所 |
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| 基金项目： | 国家十二五科技支撑计划(2012BAD32B05);中国林业科学研究院林业新技术研究所所长基金(CAFINT2011C02)资助 |
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| 摘 要： | 采用红外光谱(FT-IR)和示差扫描量热法(DSC)对桐油改性DCPD-UPR的固化特性和固化动力学进行了研究。利用Kissinger方程和Crane方程计算得到桐油改性DCPD-UPR的表观活化能94.03 kJ/mol,反应级数为0.94,指前因子为2.185×1012。利用T-β外推法确定了桐油改性DCPD-UPR的固化温度为107.28℃,后处理温度为120.65℃。较未改性的DCPD-UPR,桐油改性DCPD-UPR的固化放热曲线平缓,放热峰温度低,固化时间长,可以避免树脂固化成型时翘曲、开裂等现象的发生。
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| 关 键 词： | 不饱和聚酯 桐油 双环戊二烯 固化特性 固化动力学 |
Study on the cuing of tung oil modified dicyclopentadiene unsaturated polyester |
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| CUI Jing-fang,TAN Wei-hong,LIU Cheng-guo,ZHOU Yong-hong.Study on the cuing of tung oil modified dicyclopentadiene unsaturated polyester[J].Thermosetting Resin,2013(2):13-17. |
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| Authors: | CUI Jing-fang TAN Wei-hong LIU Cheng-guo ZHOU Yong-hong |
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| Affiliation: | (Research Institute of Chemical Processing and Utilization of Forest Products Chinese Academy of Forestry,Nanjing 210042,China) |
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| Abstract: | The curing characteristics and curing kinetics of tung oil modified dicyclopentadiene unsaturated polyester(DCPD-UPR) were investigated by FT-IR and DSC.The apparent activation energy,reaction order and pre-exponential factor were 94.03 kJ/mol,0.94 and 2.185×1012,respectively,calculated by Kissinger equation and Crane equation.The curing temperature of the tung oil-modified DCPD-UPR was 107.28 °C determined by T-β extrapolation and post-processing temperature was 120.65 °C.The tung oil-modified DCPD-UPR had more gentle curing exothermic curve,lower exothermic peak temperature and longer curing time than that of unmodified DCPD-UPR and could avoid the occurrence of phenomena such as warping and cracking in the curing molding. |
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| Keywords: | unsaturated polyester tung oil dicyclopentadiene curing characteristics curing kinetics |
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