有机化学 ›› 2016, Vol. 36 ›› Issue (4): 844-849.DOI: 10.6023/cjoc201511029 上一篇    下一篇

研究简报

侧链含苯甲酰基的芳醚型苯并噁嗪树脂的合成、热稳定性和机械性能研究

李雷a,b, 朱芝田a, 金凯凯a, 王佳佳a, 郑世军b, 房强a   

  1. a. 中国科学院上海有机化学研究所 上海 200032;
    b. 郑州大学材料科学与工程学院 郑州 450052
  • 收稿日期:2015-11-16 修回日期:2015-11-29 发布日期:2015-12-21
  • 通讯作者: 郑世军, 房强 E-mail:qiangfang@mail.sioc.ac.cn;zsj316@zzu.edu.cn
  • 基金资助:

    国家自然科学基金(Nos.21374131,21574146)资助项目.

Synthesis, Thermostability and Mechanical Properties of the Ether- Based Benzoxazine Resin with Benzoyl Moiety in the Side Chain

Li Leia,b, Zhu Zhitiana, Jin Kaikaia, Wang Jiajiaa, Zheng Shijunb, Fang Qianga   

  1. a. Key Laboratory of Synthetic. and Self-Assembly Chemistry for Organic. Functional Molecules, Shanghai Institute of Organic. Chemistry, Chinese Academy of Sciences, Shanghai 200032;
    b. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052
  • Received:2015-11-16 Revised:2015-11-29 Published:2015-12-21
  • Supported by:

    Project supported by the Natural Science Foundation of China (Nos. 21374131, 21574146).

报道一种新型的侧链含苯甲酰基的芳香醚型苯并噁嗪单体L-1.这种单体熔点低(<125℃)、易溶于普通的有机溶剂.该单体在加热时发生开环聚合,聚合物表现出较高的热稳定性,在氮气中5%的重量损失温度达380℃,在800℃下的残炭率为66%.聚合物也表现出较好的力学性能,用其粘合的两片铝板的层间剪切强度可达6.5MPa.相反,不含苯甲酰基的芳香醚型苯并噁嗪L-2,其聚合物在氮气中5%热重损失温度、800℃下残炭率和剪切强度分别为322℃,43%和4.7MPa.可见,芳香醚型苯并噁嗪分子结构中引入大体积的苯甲酰基,可显著地提高树脂的性能.这种新型苯并噁嗪树脂,可望用作纤维增强复合材料基体树脂和金属粘合剂等.

关键词: 苯并噁嗪, 苯甲酰基, 热稳定性, 机械性能

A new ether-based benzoxazine monomer having a benzoyl moiety in the side chain is reported. This monomer showed good solubility in common organic solvents and low melting point (<125 ℃). Upon heating at high temperature, the monomer converted to an insoluble and infusible resin, which showed high thermostability with a 5 wt% weight loss temperature of 380 ℃ and a char yield of 66% at 800 ℃. Moreover, the resin exhibitedgood addhesion ability to metals with the shear strength of 6.5 MPa. For comparison, a benzoxazine without benzoyl unit was prepared. After cured, such a comparative benzoxazine showed a 5 wt% weight loss temperature of 322 ℃ and a char yield of 43%, and the shear strength of 4.7 MPa, respectively. These results indicate that the introduction of the a benzoyl moiety into the ether-based benzoxazine as the side chain can efficiently improve both of the thermostability and mechanical properties of the benzoxazine. This new benzoxazine could be used as matrix or producing the carbon/glass fiber reinforced composites, as well as the adhesives for binding the metals.

Key words: benzoxazine, benzoyl, thermostability, mechanical properties