Thermal Insulation Properties Research of the Composite Material "Water Glass - Graphite Microparticles"

3rd International Conference on Competitive Materials and Technology Processes

Gostev, V.A.^1 ; Pitukhin, E.A.^2 ; Ustinov, A.S.^1 ; Shelestov, A.S.^1

Physical Engineering Department, Petrozavodsk State University, Petrozavodsk, Russia^1

Mathematical Department, Petrozavodsk State University, Petrozavodsk, Russia^2

关键词: Filler particles;    High temperature;    High thermal stability;    Industrial scale;    Processing technologies;    Quantitative phase analysis;    Research results;    Thermal insulation properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/123/1/012018/pdf
DOI  :  10.1088/1757-899X/123/1/012018

来源: IOP

【 摘 要 】

Research results for the composite material (CM) «water glass - graphite microparticles» with high thermal stability and thermal insulation properties are given. A composition is proposed consisting of graphite (42 % by weight), water glass Na2O(SiO2)n(50% by weight) and the hardener - sodium silicofluoride Na2SiF6(8% by weight). Processing technology of such composition is suggested. Experimental samples of the CM with filler particles (graphite) of a few microns in size were obtained. This is confirmed by a study of samples using X-ray diffraction analysis and electron microscopy. The qualitative and quantitative phase analysis of the CM structure was done. Values of limit load causing destruction of the CM were identified. The character of the rupture surface was detected. Numerical values of the specific heat and thermal conductivity were defined. Dependence of the specific heat capacity and thermal conductivity on temperature during monotonic heating was obtained experimentally. Studies have confirmed the increased thermal insulation properties of the proposed composition. The CM with such properties can be recommended as a coating designed to reduce heat losses and resistant to high temperatures. Due to accessibility and low cost of its components the proposed material can be produced on an industrial scale.