| 摘要 |
PURPOSE:To obtain a lightweight inorganic foam excellent in electromagnetic shielding ability by mixing a foaming agent with a mixture comprising a hydraulic inorganic material and specified amount of carbon fiber, etc., followed by curing to include cells of specified characteristics in the product. CONSTITUTION:A mixture of (A) a composition comprising (1) a hydraulic inorganic material (e.g. Portland cement, gypsum), (2) carbon fiber (e.g. carbon whisker, pitch-based carbon fiber) and (3) water and (B) a composition prepared by adding a foaming agent (e.g. Mg, hydrous hydrogen peroxide) to water to generate air bubbles, is cured to afford the objective inorganic foam with a carbon fiber content of 0.006-0.04g/cm<3> and a cell content of 15-75 vol.% (the mean diameter of each cell being 0.01-2.5mm). |
