应用化学 ›› 2010, Vol. 27 ›› Issue (01): 16-20.

• 研究论文 • 上一篇    下一篇

大分子偶联剂马来酸酐-丙烯酸丁酯-苯乙烯三元共聚物的合成及其对纳米氮化铝的表面改性

乔恒婷,夏茹,章于川*   

  1. (安徽大学化学化工学院,安徽省绿色高分子重点实验室 合肥 230039)
  • 收稿日期:2009-01-07 修回日期:2009-04-10 出版日期:2010-01-10 发布日期:2010-01-10
  • 通讯作者: 章于川,男,教授; E-mail:yuchuanzhang1946@126.com; 研究方向:聚合物基纳米复合材料
  • 基金资助:
    国国家科技攻关计划项目(2005BA316C);安徽省高等学校青年教师科研资助项目(2008JP1019)

Synthesis of Tercopolymer MAn-BA-St and Its Surface Modification for Nano-AlN with this Macromolecular Coupling Agent

QIAO Heng-Ting, XIA Ru, ZHANG Yu-Chuan*   

  1. (School of Chemistry and Chemical Engineering,Anhui University,Anhui Key Laboratory of
    Enviroment-friendly Polymer Materials,Hefei 230039)
  • Received:2009-01-07 Revised:2009-04-10 Published:2010-01-10 Online:2010-01-10

摘要:

采用自由基溶液聚合法合成了马来酸酐(MAn)-丙烯酸丁酯(BA)-苯乙烯(St)三元共聚物大分子偶联剂,并用其对纳米氮化铝(AlN)粉体进行了表面改性。通过GPCFTIR、沉降实验、TGA、接触角以及TEM的分析表明,合成的大分子偶联剂,数均相对分子量在3 000~10 000之间,适于对纳米粉体进行包覆;单体投料摩尔比为1:1:5的MAn-BA-St三元共聚物大分子偶联剂对纳米AlN的改性效果最好,其化学利用率为52.5%,物理利用率为25%;改性后纳米AlN的表面自由能从879 J/M2降至221 J/M2,在苯乙烯中分散良好。

关键词: 三元共聚物,纳米氮化铝,不饱和聚酯,表面改性

Abstract:

A new macromolecular coupling agent maleic anhydride(MAn)-butyl acrylate(BA) -styrene(St) tercopolymer was synthesized via solution free radical polymerization and it was used to modifyaluminum nitride(AIN). The terpolymer’s molecular structure was confirmed by FTIR, and its average molecular mass was determined by GPC. The structure, surface properties and thermal stability of modified nano-AlN were systematically investigated by FTIR, angle of contact, TGA, TEM and sedimentation experiment. The results show that the stability of nano-AlN modified by Man-BA-St(molar ratio is 1:1:5)is the bestin styrene solution; the chemistry and physics usage efficiencies of the macromolecular coupling are 52.5% and 25% respectively. The surface free energy of modified nano-AlN is decreased from 879J/M2 to 221J/M2 which has a good dispersibility in styrene.

Key words: tercopolymer,nanosized aluminum nitride(AlN),unsaturated polyester resin,surface modification

中图分类号: