东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2013, Vol. 34 ›› Issue (1): 95-98.DOI: -

• 论著 • 上一篇    下一篇

EA/POSS纳米复合材料的相容性及热稳定性

王颖，杨合，刘风国，薛向欣   

  1. (东北大学材料与冶金学院，辽宁沈阳110819)
  • 收稿日期:2012-07-22 修回日期:2012-07-22 出版日期:2013-01-15 发布日期:2013-01-26
  • 通讯作者: 王颖
  • 作者简介:王颖(1988-)，女，山东烟台人，东北大学博士研究生；薛向欣(1954-)，男，辽宁沈阳人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51074053).

Miscibility and Thermostability of Epoxy Acrylate-POSS Nanocomposites

WANG Ying， YANG He， LIU Feng-guo， XUE Xiang-xin   

  1. School of Materials ＆ Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2012-07-22 Revised:2012-07-22 Online:2013-01-15 Published:2013-01-26
  • Contact: XUE Xiang-xin
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摘要： 采用紫外光固化技术，通过机械共混的方法制备了甲基-多面体齐聚倍半硅氧烷(甲基-POSS)质量分数分别为1%，5%，10%，15%的环氧丙烯酸酯(EA)/POSS纳米复合材料.通过X射线衍射、扫描电子显微镜、EDS能谱分析及热重分析对环氧丙烯酸酯(EA)/POSS纳米复合材料进行研究.结果表明，在甲基-POSS质量分数较高时，EA/POSS纳米复合材料中存在甲基-POSS晶体，说明杂化材料中存在相分离.甲基-POSS在聚合物中以分子或团聚体的形式存在，并且随着POSS质量分数的增加，团聚体尺寸及数量都逐渐增多.甲基-POSS单体提高了复合材料的热稳定性，并且POSS的加入并没有影响聚合物的热降解机理.

关键词: 环氧丙烯酸酯, POSS, UV固化, 纳米复合材料, 相容性, 热稳定性

Abstract: Methyl-polyhedral oligomeric silsesquioxanes (POSS) were blended with epoxy acrylate (EA) to prepare nanocomposites through UV-curing process. The methyl-POSS nanoparticles were added to EA by physically blending at loadings of 1wt%， 5wt%， 10wt% and 15wt%. The EA/POSS nanocomposites were studied through XRD， SEM， EDS and TGA analysis. The results showed that there are methyl-POSS crystals in samples containing high POSS mass fraction，implying the existing of phase separation in EA/POSS nanocomposites. The POSS aggregates are observed in the nanocomposites， and both the size and number of aggregates are all increased with the increasing of POSS loadings. There are also POSS molecules dispersing in the EA matrix. The nanocomposites thermal stability is improved and the degradation mechanism of EA is not affected by POSS.

Key words: epoxy acrylate, POSS, UV-curing, nanocomposites, miscibility, thermostability

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