In this work, monolithic silica aerogels were prepared in pure water within 4 h by using MTMS as the precursor under ambient pressure drying (APD). The effects of the volume ratio of H₂O/MTMS, CTAB content and NH₃·H₂O concentration on the properties of MTMS-based aerogels (MSA) were investigated experimentally. The realization of the rapid synthesis of MSA under APD is attributed to getting rid of the aging process, solvent exchange and surface modification. It demonstrates that the microstructure of MSA is comprised of coralloid branches. Furthermore, the greater volume ratio of H₂O /MTMS, larger CTAB content and smaller NH₃·H₂O concentration cause relatively slimmer coralloid branches, smaller pores and weakened connectivity of skeletons. It also finds that the MSA with a greater volume ratio of H₂O/MTMS presents larger Young’s modulus and smaller compressive stress, which is because of the correspondingly different microstructures. The as-prepared MSA shows a low density of 0.064 g/cm³ and a contact angle as high as 143.4°, which provides their potentials for some engineering applications.

在这项工作中，通过在环境压力干燥（APD）下使用MTMS作为前体，在4 h的纯水中制备了整体式二氧化硅气凝胶。实验研究了H ₂ O / MTMS的体积比，CTAB含量和NH ₃ ·H ₂ O浓度对基于MTMS的气凝胶（MSA）性能的影响。在APD下快速合成MSA的实现归因于摆脱了老化过程，溶剂交换和表面改性。它表明MSA的微观结构由珊瑚状分支组成。此外，H ₂ O / MTMS的体积比越大，CTAB含量越大，NH ₃ ·H ₂越小O浓度会导致珊瑚分支相对更细，毛孔更小以及骨骼的连通性减弱。还发现，具有较大的H ₂ O / MTMS体积比的MSA表现出较大的杨氏模量和较小的压应力，这是由于相应的微结构不同。所制备的MSA的密度低至0.064 g / cm ³，接触角高达143.4°，为某些工程应用提供了潜力。