Study on the Pore Structure of Forsterite Insulating Material

Abstract:

Forsterite insulating materials were prepared by molten salt method using forsterite powder, pulp waste, NaCl and Na₂CO₃ as raw material. The pore size distribution and pore structural parameters of the sample were studied by nitrogen adsorption-desorption method. The fractal dimension of pore was obtained based on FHH (Frenkel-Halsey-Hill) equation. The results showed that adsorption-desorption isotherm of the sample was identified as type II due to the long-narrow pore with narrow openings. The pore size and fractal dimension decreased with the temperature increased. The maximum pore size was about 2 nm in the sample heated at 1100°C in the condition of different content of molten salt. And optimal thermal insulation performance of the sample were obtained in the sample contained 30 wt% Na₂CO₃ and heat treated at 1100°C.

• Periodical: Key Engineering Materials (Volume 697)
• Pages: 119-123
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.697.119
• Online since: July 2016
• Authors: Jian Peng Liu, Xiao Jun Zhang, Hong Xi Zhu*, Cheng Ji Deng
• Keywords: Forsterite, Fractal Dimension, Insulation Materials, Nitrogen Adsorption Method, Pore Structure

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