中文摘要：

一篇小说 poly (methyl-methacrylate )/silica aerogel (PMMA/SA ) 双规模的细胞的泡沫与内部混合被综合由 supercritical 列在后面二氧化碳起泡沫过程。微结构和泡沫的机械性能上的硅石 aerogel 内容的效果被 SEM， TEM 分析，和机械测试调查。试验性的结果建议硅石 aerogel 小粒的雇用清楚地由 uniformizing 房间尺寸分发与整洁的 PMMA 泡沫相比作为上瘾的罐头改进词法特征以及机械表演，减少房间尺寸和增加的房间密度。并且包括 3-10 m 的测微术的房间的双规模的房间和大约 50nm 的 nanometric 房间在源于硅石 aerogel 的保留的原来的框架结构的泡沫的结构存在，它没与各种各样的 fillers 的增加在另外的研究被描述。而且，机械力量显著地甚至与源于唯一的微观结构，减少的房间尺寸和提高的房间墙的硅石 aerogel 的小数量被提高。压缩力量是 18.12 MPa，曲折力量是由分别地增加 5wt% 和 2wt% 硅石 aerogel 的 18.90 MPa。这些结果表明潜力综合与低密度和高力量的优点要用作结构的材料的 PMMA/SA 双规模的细胞的泡沫。

英文摘要：

A novel poly（methyl-methacrylate）/silica aerogel（PMMA/SA） dual-scale cellular foam was synthesized with internal mixing followed by the supercritical carbon dioxide foaming process.The effects of silica aerogel content on the microstructural and mechanical performance of the foams were investigated by SEM,TEM analysis,and mechanical tests.The experimental results suggest that the employment of silica aerogel granule as addictive can distinctly improve the morphological feature as well as the mechanical performance in comparison to neat PMMA foam by uniformizing cell size distribution,decreasing cell size and increasing cell density.And dual-scale cells including micrometric cells of 3-10 μm and nanometric cells of about 50 nm existed in the structure of foams resulting from the retained original framework structure of silica aerogel,which has not been described in other studies with the addition of various fillers.Furthermore,the mechanical strength was significantly elevated even with a small amount of silica aerogel resulting from the unique microstructure,decreased cell size and enhanced cell walls.The compressive strength was 18.12 MPa and the flexural strength was 18.90 MPa by adding 5wt% and 2wt% silica aerogel,respectively.These results demonstrate the potential to synthesize PMMA/SA dual-scale cellular foams to be used as structural materials with the advantages of low density and high strength.