环氧树脂辐射固化反应速率及速率常数的研究

隋刚; 张佐光; 李敏; 李凤梅

环氧树脂辐射固化反应速率及速率常数的研究

1.
北京航空航天大学材料科学与工程学院, 北京 100083
2. 北京师范大学低能核物理研究所, 北京 100875

基金项目: 国家自然科学基金资助项目(59833110);国家863计划资助项目(2001AA335020)

详细信息

作者简介:
张佐光(1952-),男,江西井岗山人,教授, zgzhang@public.bta.net.cn.

中图分类号: TB 332; O 644.2
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出版历程
- 收稿日期: 2002-06-20
- 网络出版日期: 2003-08-31

Study on reaction rate and kinetic constant in radiation curing of epoxy resins

1.
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875,China

摘要

摘要: 研究了环氧树脂溶液的电子束辐射固化反应速率常数以及树脂特性对反应速率的影响.研究结果显示,辐射反应增长速率常数k_p和终止速率常数k_t在反应进行的不同阶段表现出不同的控制机制.环氧树脂的分子量及其分布,分子化学结构对辐射反应速率都有很大影响,反应速率大的树脂体系最终达到的反应程度也高.
- 环氧树脂 /
- 电子束 /
- 固化 /
- 动力学常数 /
- 反应速率
Abstract: The kinetic studies on electron beam curing of epoxy resins were made in this paper. The kinetic characteristics of different epoxy resin in acetonitrile solution are explored. The propagation kinetic constant has no evident change at initial stage and begins to decrease after some conversion. While the termination reaction is reaction-diffusion-controlled throughout the reaction process, and the termination kinetic constant is decreased gradually. The reaction rate of radiation systems decreases with the increasing molecular weight of epoxy resin and the reaction rate of the sample with high polydispersity is higher at the same reaction extent. For the epoxy resin systems whose chemical structure of molecules is different, the reactivity of samples under radiation can be greatly affected by density of functional groups and space obstacle in molecular structures. The radiation system with a higher reaction rate can get to higher conversion during the radiation process.
- epoxy resins /
- electron beams /
- solidification /
- kinetic constant /
- reaction rate

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参考文献(1)

[1] Fouassier J P, Rabek J F. Radiation curing in polymer science and technology.Fundamentals and Methods[M] London:Elsevier Science Publishers LTD,1993 [2] Parrot P, His S, Boursereau F. Electron beam cured composites[J] International SAMPE Symposium and Exhibition Proceedings, 1999, 44:1354~1358 [3] Czvikovszky T, Alpar T. Advanced composites materials made by radiation processing[J] Radiat Phys Chem,1988, 31 (4-6):639~645 [4] Hoyt A E, Harrah L A, Allred R E. Novel resins for E-beam manufacturable composite space structures. International SAMPE Symposium and Exhibition Proceedings, 1997,42:509~514 [5] Abrams F, Tolle T B. An analysis of E-beam potential in aerospace composite manufacturing [J] International SAMPE Symposium and Exhibition Proceedings, 1997, 42:548~557 [6] Sui G, Zhong W H, Zhang Z G. Electron beam curing of advanced composites[J] J Mater Sci Technol, 2000, 16(6):627~630 [7] 隋刚, 张佐光, 李敏,等. 电子束固化环氧树脂的引发和增长反应速率[J] 北京航空航天大学学报,2003,29(8):682~685 Sui Gang, Zhang Zuoguang, Li Min, et al. Rate of initiation and propagation in electron beam curing of epoxy resins[J] Journal of Beijing University of Aeronautics and Astronautics, 2003,29(8):682~685(in Chinese) [8] Beringer F M, Drexler M, Gindler E M, et al. Diaryliodonium salts Ⅰ synthesis[J] J Am Chem Soc, 1953, 75(5):2705~2708 [9] 潘祖仁. 高分子化学[M] 北京:化学工业出版社, 1997 Pan Zuren. Polymer chemistry[M] Beijing:Chemical Industry Press,1997(in Chinese) [10] 黄光琳, 冯雨丁, 吴茂良. 高分子辐射化学基础[M] 成都:四川大学出版社, 1993 Huang Guanglin, Feng Yuding, Wu Maoliang. The foundation of macromolecule radiation chemistry[M] Chengdu:Sichuan University Press, 1993(in Chinese)

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