Effect of Organo-Montmorillonite Dispersion on Properties of Epozy Resin Nanocomposites
Montmorillonite modified with alkyl ammonium ions was dispersed in an epoxy/methyl nadic anhydride systems to form epoxy/ organo-Montmorillonite (oMMT) nanocomposites. Different systems of epoxy Montmorillonite nanocomposites materials were prepared by mixing at different temperature before curing. These systems were characterized by X-ray diffraction (XRD), scanning electric microscopy (SEM) and atomic force microscopy (AFM). The results of XRD illustrated that montmorillonite was exfoliated and independent upon the mixing temperature. AFM image showed a uniform dispersion of montmorillonite in the resulting nanocomoposites. The results of impact and heat distortion temperature test showed that mixing temperature effected the impact and thermal properties and showed a maximum at 90℃. Compared with pristine epoxy, the impact strength and distortion temperature of the nanocomposites as prepared by mixing at 90℃ before curing was simultaneously improved, 31.6％ and 14℃, respectively Morphology of fracture face of the epoxy nanocomposites was investigated by means of SEM imagines. The toughening mechanisms was also analyzed and speculated.
epozy montmorillonite nanocomposites toughness
Ning GUO Junguo GAO Mingyan ZHANG Zelun LU Xiaohong ZHANG
Key Laboratory of Engineering Dielectric and Its Application, Ministry of Education, Harbin Universi Customer Representative of General Staff Department in Harbin District, Harbin, 150066, CHINA
国际会议
哈尔滨
英文
860-863
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）