Aerogel particle filled epoxy was fabricated in this work by investigating the effect of resin viscosity on pore infiltration and density of resulting composites. Aerogel porous structure was successfully preserved by carefully selecting epoxy viscosity for mixing procedure. The effect of aerogel content and particle size was subsequently investigated on thermal conductivity and compressive properties of epoxy composites. The results showed that incorporating aerogel particles into the resin could lead to over 40% reduction in both density and thermal conductivity. However, there was a linear trade-off between compressive properties and thermal conductivity of silica aerogel/epoxy composites. A wide range of aerogel particle sizes was also studied and it was found that the size effect was dependent on the aerogel content. Overall, the results of the presented work allow conclusions to be drawn regarding the usefulness of delayed wet mixing technique and the impact of particle size and loading on aerogel filled resin composites.

通过研究树脂粘度对孔渗入和所得复合材料密度的影响，在此工作中制备了气凝胶颗粒填充环氧树脂。通过仔细选择环氧粘度进行混合，成功地保留了气凝胶多孔结构。随后研究了气凝胶含量和粒径对环氧复合材料导热性和压缩性能的影响。结果表明，将气凝胶颗粒掺入树脂中可导致密度和导热率均降低40％以上。但是，二氧化硅气凝胶/环氧树脂复合材料的压缩性能和导热率之间存在线性权衡。还研究了大范围的气凝胶颗粒尺寸，并且发现尺寸效应取决于气凝胶含量。总体，