A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a modified fiber refractory material, which is composed of the following raw materials by weight part: 0.2-0.3 of hexamethylcyclotrisiloxane, 1-2 of ammonium molybdate, 0.4-1 of petroleum calcium sulfonate, 80-83 of bauxite, 6-10 of zirconia, 5-10 of phenolic resin, 10-12 of microcrystalline cellulose, 26-30 of tetraethyl orthosilicate, 0.3-1 of polybenzimidazole, 3-4 of 5-7mol/l nitric acid solution, and 2-3 of glacial acetic acid. The tetraethyl orthosilicate involved in the invention is hydrolyzed into silanol sol under the condition of adding the catalyst glacial acetic acid, the silanol sol is mixed with a fiber emulsion, by evaporating the solvent, a heterocomplex containing carbon and silicon can be obtained, and finally high temperature carbonization is carried out, and the carbon source is provided by a fiber emulsion, thus obtaining a carbon silicon composite additive. The carbon silicon composite additive has the advantages of stable chemical properties, high heat conductivity coefficient, small thermal expansion coefficient, thermal shock resistance, light weight, and high strength.
The invention discloses a modified fiber refractory material, which is composed of the following raw materials by weight part: 0.2-0.3 of hexamethylcyclotrisiloxane, 1-2 of ammonium molybdate, 0.4-1 of petroleum calcium sulfonate, 80-83 of bauxite, 6-10 of zirconia, 5-10 of phenolic resin, 10-12 of microcrystalline cellulose, 26-30 of tetraethyl orthosilicate, 0.3-1 of polybenzimidazole, 3-4 of 5-7mol/l nitric acid solution, and 2-3 of glacial acetic acid. The tetraethyl orthosilicate involved in the invention is hydrolyzed into silanol sol under the condition of adding the catalyst glacial acetic acid, the silanol sol is mixed with a fiber emulsion, by evaporating the solvent, a heterocomplex containing carbon and silicon can be obtained, and finally high temperature carbonization is carried out, and the carbon source is provided by a fiber emulsion, thus obtaining a carbon silicon composite additive. The carbon silicon composite additive has the advantages of stable chemical properties, high heat conductivity coefficient, small thermal expansion coefficient, thermal shock resistance, light weight, and high strength.
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