| 端羧基丁腈橡胶改性环氧树脂的结构与性能 |
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| 引用本文： | 石敏先,黄志雄,郦亚铭,杨国瑞.端羧基丁腈橡胶改性环氧树脂的结构与性能[J].高分子材料科学与工程,2008,24(2):47-50. |
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| 作者姓名： | 石敏先 黄志雄 郦亚铭 杨国瑞 |
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| 作者单位： | 武汉理工大学材料科学与工程学院,湖北,武汉,430070 |
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| 基金项目： | “十一五”总装备预先研究资助项目(51312040404) |
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| 摘 要： | 用液体端羧基丁腈橡胶(CTBN)对环氧树脂(EP)进行改性,合成了CTBN/EP预聚物,FT-IR分析表明,在反应中EP的环氧基开环后与CTBN的羧基反应生成了酯键。研究了CTBN/EP/聚醚胺(PEA)体系的力学性能,结果表明,随着CTBN含量的增大,其弯曲强度、拉伸强度降低,冲击强度、断裂伸长率增大,说明CTBN通过化学预聚改性的EP具有良好的韧性。SEM分析表明,固化过程中析出了橡胶相并均匀分散在环氧树脂基体中。
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| 关 键 词： | 端羧基丁腈橡胶 环氧树脂 预聚物 傅立叶变换红外光谱 力学性能 |
| 文章编号： | 1000-7555（2008）02-0047-04 |
| 收稿时间： | 2007-04-11 |
| 修稿时间： | 2007-08-01 |
Structure and Properties of Carboxyl-Terminated Poly(Butadiene-co-Acrylonitrile) Modified Diglycidyl Ether of Bisphenol-A Epoxy Resin |
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| SHI Min-xian,HUANG Zhi-xiong,LI Ya-ming,YANG Guo-rui.Structure and Properties of Carboxyl-Terminated Poly(Butadiene-co-Acrylonitrile) Modified Diglycidyl Ether of Bisphenol-A Epoxy Resin[J].Polymer Materials Science & Engineering,2008,24(2):47-50. |
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| Authors: | SHI Min-xian HUANG Zhi-xiong LI Ya-ming YANG Guo-rui |
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| Affiliation: | (School of Material Science and Engineering,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | Liquid carboxyl-terminated poly(butadiene-co-acrylonitrile)(CTBN)-epoxy resin(EP) prepolyers with different CTBN content were synthesized.Then the characterization of CTBN/EP prepolymers and properties of CTBN/EP/PEA curings were investigated.FT-IR spectra indicate the formation of functional ester group between epoxy group of epoxy resin and terminal carboxy group of CTBN.The mechanical investigation of CTBN/EP/polyetheramine shows that bending strength and tensile strength decrease with the CTBN composition increasing,but the impact strength and elongation-at-break increase,which results the good toughness of the modified resin system.SEM micrographs present the phase separation,and the rubber particles precipitate and distribute well in epoxy matrix. |
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| Keywords: | carboxyl-terminated butadiene acrylonitrile(CTBN) copolymer epoxy resin prepolymer FT-IR mechanical property |
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