The Effect of the Type of Gelling Agent on the Speed of Gelation of Sol-Gels

Abstract:

This article deals with the selection of a suitable gelling agent for refractory castable with a sol-gel binder system. The goal is to find the optimal ratio between gelation time, content, and concentration of the solution. Various salts (NaCl, NH₄Cl, Ca(NO₃)₂) are investigated as gelling agents. Gelation curves are constructed from gelation time observations. For the design of the formula of refractory castable with a sol-gel bond, it is important to know the behavior of the sol after mixing with the gelling agent. This is the goal of the experiment. In the end, we will obtain initial data for further proposals for the composition of refractory castable with a sol-gel bond.

• Periodical: Solid State Phenomena (Volume 351)
• Pages: 47-52
• DOI: https://doi.org/10.4028/p-uy2YCR
• Online since: October 2023
• Authors: Jana Majerová*, Dorothea Sklenářová, Lenka Nevřivová
• Keywords: Nanotechnologies, Refractory Castable, Silica, Sol-Gel

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