采用微波研究了苯酚封端的聚氨酯预聚物(PU)与3,3'-二氯-4,4'-二氨基-二苯基甲烷(MOCA)的固化过程中的热行为,测定了固化过程中的温度变化及温度变化速率,初步探讨了固化过程中温度变化以及温度变化速率与体系固化过程之间的关系,并与热固化过程进行了比较.研究结果发现:微波固化能显著提高PU/MOCA体系固化速率,在微波场中,体系的温度变化和温度变化速率不仅依赖于微波功率,而且与体系的结构密切相关,而热固化的温度变化和温度变化速率均较小,与体系的结构关系不大.
参考文献
| [1] | Jullien H.;Merienne C.;Petit A. .THE MICROWAVE REACTION OF PHENYL GLYCIDYL ETHER WITH ANILINE ON INORGANIC SUPPORTS - A MODEL FOR THE MICROWAVE CROSSLINKING OF EPOXY RESINS[J].Polymer: The International Journal for the Science and Technology of Polymers,1996(15):3319-3330. |
| [2] | Boey FYC;Chia L;Yap BH .Microwave curing of epoxy-amine system--effect of curing agent on the rate enhancement[J].Polymer Testing,1999(2):93-109. |
| [3] | Thostenson E.T.;Chou T.-W. .Microwave processing:fundamentals and applications[J].Composites, Part A. Applied science and manufacturing,1999(9):1055-1071. |
| [4] | Stefani P M;Moschiar S M;Aranguren M I.Epoxy-Urethane copolymer:relation between morphology and properties[J].Journal of Applied Polymer Science,2001(82):2544-2550. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%