华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (9): 90-94,116.

• 材料科学与技术 • 上一篇    下一篇

超支化环氧树脂增韧增强双酚A型环氧树脂

张道洪1 贾德民1† 黄险波2   

  1. 1.华南理工大学 材料科学与工程学院,广东 广州 510640;2.广州金发科技股份有限公司,广东 广州 510641
  • 收稿日期:2005-09-13 出版日期:2006-09-25 发布日期:2006-09-25
  • 通信作者: 贾德民,教授.E—mail:psdmjia@scut.edu.cn E-mail:zhangdh27@163.com
  • 作者简介:张道洪(1976-),男,博士生,主要从事有机一无机纳米杂化材料、超支化环氧树脂和功能性环氧树脂的合成与性能研究.
  • 基金资助:

    国家自然科学基金重点资助项目(59933060);广东省f1然科学基金资助项目(B64590)

Bisphenol-A Epoxy Resin Toughened and Reinforced by Hyperbranched Epoxy Resin

Zhang Dao-hong  Jia De-min  Huang Xian-bo   

  1. 1.School of Materials Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China;2.Guangzhou Kingfa Science& Tehnology CO. LTD.,Guangzhou 510641,Guangdong.China
  • Received:2005-09-13 Online:2006-09-25 Published:2006-09-25
  • Contact: 贾德民,教授.E—mail:psdmjia@scut.edu.cn E-mail:zhangdh27@163.com
  • About author:张道洪(1976-),男,博士生,主要从事有机一无机纳米杂化材料、超支化环氧树脂和功能性环氧树脂的合成与性能研究.
  • Supported by:

    国家自然科学基金重点资助项目(59933060);广东省f1然科学基金资助项目(B64590)

摘要: 采用一步法合成的低粘度液体型超支化环氧树脂HTDE一2增韧增强双酚A型环氧树脂,研究了HTDE-2含量对HTDE-2/双酚A型环氧杂化树脂力学性能和热学性能的影响.利用红外光谱、扫描电镜、热分析、动态力学分析和分子模拟技术讨论了超支化环氧树脂的结构、杂化树脂的性能和原位增韧增强机理.结果显示:杂化树脂的机械性能随超支化环氧树脂含量的增加先增加后下降,具有最大值;当HTDE-2的含量为9% 左右时,杂化树脂的拉伸强度、弯曲强度、冲击强度和断裂韧性分别提高20.7% ,14.2% ,208.8% 和74.9% ,综合性能最好,但玻璃化转变温度和热分解温度有所下降.

关键词: 超支化环氧树脂, 制备, 增韧, 增强, 机理, 分子模拟

Abstract:

Liquid low-viscosity hyperbranched epoxy resin HTDE-2 synthesized by one-Dot method was used to toughen and reinforce the bisphenol-A epoxy resin, and the effect of HTDE-2 content on the mechanical and ther-mal performances of the HTDE-2/bisphenol-A hybrid resin was investigated.Then,the structure of HTDE-2.the perform ance as well as the toughening and reinforcing mechanism of the HTDE-2/bisphenol-A hybrid resin were researched by means of FTr-IR,SEM,DSC,TGA,DMA and molecular simulation technologY. The resuhs indicate that the mechanical perform ance of the hybrid resin first increases with the HTDE-2 content to a maximum. and then decreases,and that,at a HTDE-2 mass fraction of about 9% in HTDE-2/bisphenol-A hybrid resin. the hybrid resin is of excellent integrated perform ance,because its tensile strength, flexural strength,impact strength and frac-ture toughness respectively increase by 20.7% ,14.2%, 208.8% and 74.9% .However.the corresponding glass transition temperature and therm al degradation temperature are found decreasing to some degree.

Key words: hyperbranched epoxy resin, preparation, toughening, reinforcement, mechanism, molecular simulation