Tech Library

Sodium Silicate Insulating Foam Reinforced with Acid-Treated Fly Ash

A set of insulating foams based on sodium silicate were prepared using acid-treated fly ash as an additive. It was found that the HCl-treated fly ash was able to remove the undesirable transition/alkali metal impurities up to 74%. Furthermore, the effect of the fly ash amount and modulus (SiO2/Na2O mole ratio) on the thermal conductivity, density, and compressive strength of the product was evaluated. The insulating foam prepared using 12.5 wt% acid-treated fly ash and modulus of 1.8 exhibited a low thermal conductivity of 0.0428 W/m·K, density of 156.3 kg/m3, and high compressive strength of 1.12 MPa.

This paper highlights application of the C-Therm TCi Thermal Conductivity Analyzer.

Download

Before downloading the file, we request that you send us your contact information. Upon completion of the form you will be prompted to download the file.