| Cure Kinetics of DGEBA with Hyperbranched Poly （3-hydroxyphenyl） Phosphate as Curing Agent Studied by Non-isothermal DSC |
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| 引用本文： | YAO Liang DENG Jing QU Bao-jun SHI Wen-fang. Cure Kinetics of DGEBA with Hyperbranched Poly （3-hydroxyphenyl） Phosphate as Curing Agent Studied by Non-isothermal DSC[J]. 高等学校化学研究, 2006, 22(1): 118-122. DOI: 10.1016/S1005-9040(06)60059-7 |
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| 作者姓名： | YAO Liang DENG Jing QU Bao-jun SHI Wen-fang |
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| 作者单位： | YAO Liang，DENG Jing，QU Bao-jun ** and SHI Wen-fang State Key Laboratory of Fire Science，Department of Polymer Science and Engineering，University of Science and Technology of China，Hefei 230026，P. R. China |
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| 基金项目： | China NKBRSF Project，中国科学院资助项目 |
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| 摘 要： | IntroductionEpoxy resins are widely used in the fields of coa-tings,adhesives,insulating materials,etc..Diglycidylether of bisphenol A(DGEBA)is the most importantepoxy resin in industry because of its fluidity,physicaland mechanical properties after cure,…
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| 关 键 词： | 固化剂 非等温线DSC 动力学 聚3-羟苯基磷酸盐 环氧树脂 |
| 文章编号： | 1005-9040（2006）-01-118-05 |
| 收稿时间： | 2005-04-11 |
Cure Kinetics of DGEBA with Hyperbranched Poly (3-hydroxyphenyl) Phosphate as Curing Agent Studied by Non-isothermal DSC |
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| Liang YAO, Jing DENG, Bao-jun QU,Wen-fang SHI. Cure Kinetics of DGEBA with Hyperbranched Poly (3-hydroxyphenyl) Phosphate as Curing Agent Studied by Non-isothermal DSC[J]. Chemical Research in Chinese University, 2006, 22(1): 118-122. DOI: 10.1016/S1005-9040(06)60059-7 |
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| Authors: | Liang YAO Jing DENG Bao-jun QU Wen-fang SHI |
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| Affiliation: | State Key Laboratory of Fire Science, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China |
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| Abstract: | The cure kinetics of diglycidyl ether of bisphenol A(DGEBA) with hyperbranched poly(3-hydroxyphenyl) phosphate(HHPP) as the curing agent was investigated by means of non-isothermal differential scanning calorimetry(DSC) at various heating rates. The results were compared with the corresponding results by using 1,3-dihydroxybenzene(DHB) as a model compound. The results show that HHPP can enhance the cure reaction of DGEBA, resulting in the decrease of the peak temperature of the curing curve as well as the decrease of the activation energy because of the flexible -P-O- groups in the backbone of HHPP. However, both the activation energy of the cured polymer and the peak temperature of the curing curve are increased with DHB as a curing agent. The cure kinetics of the DGEBA/HHPP system was calculated by using the isoconversional method given by Málek. It was found that the two-parameter autocatalytic model(esták-Berggren equation) is the most adequate one to describe the cure kinetics of the studied system at various heating rates. The obtained non-isothermal DSC curves from the experimental data show the results being accordant with those theoretically calculated. |
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| Keywords: | Hyperbranched polyphosphate Cure kinetics Epoxy resin Non-isothermal DSC |
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