Nanocomposites of Organosilicate Clay and a Modified Bismaleimide Resin

摘要

There have been considerable interests in thermoplastics/clay nanocomposites due to their markedly improvement properties including mechanical, thermal, electrical and optical properties. More recently, thermosets based clay nanocomposites have been increasingly studied. Epoxy resins are most studied matrices. However, there are only a few reports on nanocomposites from high performance resins. In this paper, we report the study of nanocomposites of organosilicate clays and a high performance thermoset, which is a model bismaleimide resin of 4,4’-bismaleimidodiphenyl methane (BMPM) modified with 2,2’-diallylbisphenol-A (DBA). The nanocomposites were synthesized using different methods including in situ polymerization, solution and melt intercalation. The structures of the nanocomposites were characterized using wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM). Nanocomposites with different degrees of exfoliation were obtained (seen in Figures 1 and 2). Intercalated nanocomposites were achieved by melt intercalation and solution intercalation, while fully exfoliated structure was achieved via in situ polymerization.