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Author(s): , , , , , , , , ,

Keywords: , , , , , ,

Abstract: Poly(methyl methacrylate)-silica nanocomposite (PSN) foams were formulated for the comparison of the effect of vinyl-modified silica (VMS) and raw silica (RS) particles on cell structure, insulation properties, and insulation properties. It was found that those thermoplastic foams containing VMS particles had improved dispersion capability than those containing RS particles. The incorporation of VMS particles was found to reduce the cell size and increase the cell density of the produced foams, thus enhancing the physical properties of the foams. The thermal transport capabilities of the foams containing VMS particles were significantly lower than those of the foams containing RS particles due to the presence of a relatively large quantity of air in the foams. The PSN foams containing VMS particles were found to be more thermally stable than those containing RS particles indicating that foams containing dispersed silica particles have a higher thermal stability than those containing aggregated particles.

Reference: Polymer Composites, 30, 6 (2009) 715-722

DOI: 10.1002/pc.20601