中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (02): 24-27 .DOI: 10.19491/j.issn.1001-9278.2008.02.005

• 材料与性能 • 上一篇    下一篇

乙烯一醋酸乙烯共聚物树脂改性天然木粉的性能研究

祁宗，薛平，丁筠，贾明印，李建立   

  1. 北京化工大学机电工程学院，北京100029
  • 收稿日期:2007-11-01 修回日期:1900-01-01 出版日期:2008-02-26 发布日期:2008-02-26

A Study of Ethylene-vinyl Acetate Copolymer ModiFied Wood-dour

QI Zong，XUE Ping，DING Jun，JIA Ming-yin，LI Jian-li   

  1. College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029 , China
  • Received:2007-11-01 Revised:1900-01-01 Online:2008-02-26 Published:2008-02-26
  • Contact: QI Zong

摘要： 采用一种新型方法以改善木粉与烯烃树脂的相容性，利用乙烯-醋酸乙烯共聚物(EVA)对天然木粉进行表面改性。通过漫反射红外光谱分析木粉改性前后的表面化学基团变化，利用热失重曲线分析木粉的热稳定性，并结合微观扫描电镜分析改性前后木粉表面微观形态变化。结果表明，红外谱图中改性后木粉的经基峰基本消失，从而降低了原始木粉表面的化学极性，改善了改性木粉与聚合物基体的相容性;EVA的加人会提高木粉的热稳定性，并且阻止木粉吸附空气中的水分;扫描电镜分析表明，EVA可以包覆木粉表面，添加过量EVA会使木粉颗粒之间相互粘接，当EVA用量为15%(质量分数，下同)时，在木粉表面可以形成比较完整的EVA包覆层.

关键词: 乙烯-醋酸乙烯共聚物, 木粉, 表面改性

Abstract: EVA was employed to modify the surface of wood-flour in order to improve its compatibility with polyolefin. the diffuse reflectance spectroscopy, thermo-gravimetric analysis, and SEM were used to examine the changes of surface groups, thermal stability, and surface morphology of wood-flour, respectively. EVA prevented the adsorption of water from air, reduced the polarity of wood-flour. Termal stability of treated wood-flour was enhanced by the modification of EVA.SEM showed that when the EVA mass content was 15 wt，the wood-flour was completely encapsulated.

Key words: ethylene-vinyl acetate copolymer, wood-flour, surface modification

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