Registration Number
0221U106567,
0121U113819
, R & D reports
Title
R&D of ultra-lightweight high-temperature (up to 1400 ᵒС) heatproof materials using industrial waste
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Head
Loboda Petro І., д.т.н.
Registration Date
14-12-2021
Organization
National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
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The kinetics of the process of formation of a porous structure during sintering of microspheres with bonds based on sol-gel and nanostructured silicon oxide has been studied. The dependences of shrinkage, porosity and density of the obtained composites on the sintering temperature are analyzed. It was found that the density of sintered at temperatures of 1300-1400 oC materials with a bond based on sol-gel is 0.57-0.63 g / cm3, and the porosity reaches 74%. Dependences of mechanical properties on sintering temperature are analyzed. The compressive strength was found to be 15.3 MPa for composites with a sol-gel bond and 51 MPa for composites with a nanostructured silica bond. It was found that the coefficient of thermal conductivity in the obtained samples of composite heat-protective material is at the level of 0.339-0.372 W / (m • K), which is lower in terms of specific indicators than in most known building materials.
Product Description
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Bohomol Yurii Ivanovych
Solodkii Yevgen V.
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2021-12-14
