| 摘要 |
PURPOSE:To provide the refractory coating compsn. for buildings which is improved in working enviroment, finish beauty and durability by compounding hydraulic cement, inorg. lightweight aggregate, endothermic material, foaming agent, and further a soft setting agent at specific ratios. CONSTITUTION:This compsn. is formed by compounding, by weight %, (a) 15 to 60 hydraulic cement, (b) 5 to 58 inorg. lightweight aggregate having 0.01 to 1.5mm grain sizes, (c) 25 to 75 endothermic material having 50 to 500 deg.C heat absorption peak, 0.05 to 10mu average particle diameters and >=300cal/g heat absorption quantity in pyrolysis, (d) 0.05 to 3 foaming agent which grows to >=20mm right after and to >=75% thereof after 5 minutes when the foaming power is measured by a Los Miles Method at 25 deg.C, and (e) 0.1 to 5 soft setting agent. The curing property of this compsn. is improved by the component (a) and the heat insulation and weight reduction of the coating material are improved by the component (b). The fire resistance is improved by the selection of the component (c) and the weight is surface reduced by the component (d). The compsn. is tentatively set and the interval time for wet-on-wet coating is shortened by the component (e). |
