| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fireproof coating agent having a long useful life and excellent in adhesiveness, waterproof property and rustproof property by mixing mineral powder consisting of volucanic tuff powder subjected to calcination, carbon powder, standard sand, glass powder and aluminum cement with an acrylic ester copolymer resin emulsion (AE) in a prescribed ratio. SOLUTION: A blend ratio of volucanic tuff powder (example: broken powder of Oya-ishi subjected to high heat treatment at 2000 deg.C) to mineral powder is 5-16wt.%. A blend ratio of the mineral powder to AE is 5:3 by weight ratio. Fiberglass in an amount of 1-2wt.% may be further added thereto. In addition, standard sand (example: silica sand No.6) in an amount corresponding to about 1/3 of the weight of the mineral powder may be added thereto in order to ad just spraying thickness. Aluminum cement in the mineral powder functions as a mortar material, because the powder is hardened by adding water content thereto. The acrylic ester copolymer resin has an appearance of ash color, exhibits emulsion state and has 500-2000 cPs viscosity and pH 6-8. |
