| 高纯度液体环氧树脂的结构表征及固化动力学 |
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| 引用本文： | 罗毅,程珏.高纯度液体环氧树脂的结构表征及固化动力学[J].北京化工大学学报(自然科学版),2007,34(4):381-384. |
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| 作者姓名： | 罗毅 程珏 |
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| 作者单位： | 北京化工大学材料科学与工程学院， 北京〓100029 |
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| 摘 要： | 采用柱分离法对液态双酚A环氧树脂E51进行分离，得到分子量为340的单组分环氧树脂，并对其进行了IR、NMR和ESI-MS表征。研究了E51环氧树脂及单组分环氧树脂与DDS的固化反应动力学，采用DSC测定了E51环氧树脂和单组分环氧树脂与DDS固化体系的固化反应表观活化能，分别为134.85和152.15kJ/mol。通过对2种体系固化产物的Tg分析，结果表明E51/DDS固化产物的Tg比单组分环氧树脂/DDS固化产物的Tg低约10℃，分别为202.2和212.4℃。
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| 关 键 词： | 环氧树脂 柱分离 硅胶 固化动力学 环氧树脂 柱分离 硅胶 固化动力学 |
| 修稿时间： | 2006-11-09 |
Structure characterization of high purity liquid epoxy resin and its curing behaviour kinetics |
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| LUO Yi,CHENG Jue.Structure characterization of high purity liquid epoxy resin and its curing behaviour kinetics[J].Journal of Beijing University of Chemical Technology,2007,34(4):381-384. |
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| Authors: | LUO Yi CHENG Jue |
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| Institution: | College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | A liquid bisphenol A epoxy resin E51 was fractionated using a column separation technique, and a single composition epoxy resin (high purity epoxy, HPE) with a molecular weight of 340 was collected. The structure of HPE was characterized by FTIR,1H-NMR and ESI-MS. DSC was employed in order to monitor the curing reaction kinetics of E51 epoxy resin and HPE with 4,4′-diaminodiphenyl sulfone (DDS) as hardener. The calculated apparent activation energies were 134.85and 152.15kJ/mol for the E51/DDS and HPE/DDS systems respectively. DSC measurements showed that the Tg of the HPE/DDS system was approximately 10℃ higher than that of the E51/DDS system, with the values being 212.4 and 202.2℃ respectively. |
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| Keywords: | epoxy resin column separation silica gel curing kinetics |
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