A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses an alumina-magnesia spinel refractory material. The alumina-magnesia spinel refractory material is prepared from 71-80 parts by weight of alumina-magnesia spinel, 1-1.5 parts by weight of calcium stearate, 6-8 parts by weight of polyethylene glycol 400, 4-10 parts by weight of phenolic resin, 10-12 parts by weight of sisal hemp fibers, 0.6-1 part by weight of 2-mercaptobenzimidazole, 26-30 parts by weight of ethyl orthosilicate, 3-4 parts by weight of a nitric acid solution with a concentration of 5-7mol/l, 2-3 parts by weight of glacial acetic acid, 0.7-1 part by weight of casein, 2-3 parts by weight of polypropylene, 0.1-0.2 parts by weight of naphthenic soap and 1-1.3 parts by weight of sodium fluosilicate. The ethyl orthosilicate is hydrolyzed to form silanol sol in the presence of glacial acetic acid as a catalyst, the silanol sol and a fiber emulsion are mixed, the solvent is evaporated so that a compound containing carbon and silicon is obtained, and the compound is subjected to high temperature carbonization so that a carbon-silicon compound assistant is obtained, wherein the fiber emulsion provides a carbon source. The carbon-silicon compound assistant has stable chemical performances, a high heat conduction coefficient, a small thermal expansion coefficient, heat shock resistance, light weight and high strength.
The invention discloses an alumina-magnesia spinel refractory material. The alumina-magnesia spinel refractory material is prepared from 71-80 parts by weight of alumina-magnesia spinel, 1-1.5 parts by weight of calcium stearate, 6-8 parts by weight of polyethylene glycol 400, 4-10 parts by weight of phenolic resin, 10-12 parts by weight of sisal hemp fibers, 0.6-1 part by weight of 2-mercaptobenzimidazole, 26-30 parts by weight of ethyl orthosilicate, 3-4 parts by weight of a nitric acid solution with a concentration of 5-7mol/l, 2-3 parts by weight of glacial acetic acid, 0.7-1 part by weight of casein, 2-3 parts by weight of polypropylene, 0.1-0.2 parts by weight of naphthenic soap and 1-1.3 parts by weight of sodium fluosilicate. The ethyl orthosilicate is hydrolyzed to form silanol sol in the presence of glacial acetic acid as a catalyst, the silanol sol and a fiber emulsion are mixed, the solvent is evaporated so that a compound containing carbon and silicon is obtained, and the compound is subjected to high temperature carbonization so that a carbon-silicon compound assistant is obtained, wherein the fiber emulsion provides a carbon source. The carbon-silicon compound assistant has stable chemical performances, a high heat conduction coefficient, a small thermal expansion coefficient, heat shock resistance, light weight and high strength.
| European Patent Office | 2015
| European Patent Office | 2015
| European Patent Office | 2016
| European Patent Office | 2015