Synthesis and Surface Strengthening Modification of Silica Aerogel from Fly Ash.

ABSTRACT: This study focuses on using activated fly ash to preparate silica aerogel by the acid solution-alkali leaching method and ambient pressure drying. Additionally, to improve the performance of silica aerogel, C₆H₁₆O₃Si (KH-570) and CH₃Si(CH₃O)₃ (MTMS) modifiers were used. Finally, this paper investigated the factors affecting the desilication rate of fly ash and analyzed the structure and performance of silica aerogel. The experimental results show that: (1) The factors affecting the desilication rate are ranked as follows: hydrochloric acid concentration > solid-liquid ratio > reaction temperature > reaction time. (2) KH-570 showed the best performance, and when the volume ratio of the silica solution to it was 10:1, the dens

SUBMITTER: Zhang L 

PROVIDER: S-EPMC11012301 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature