| 摘要 |
<p>PURPOSE: A fire-insistent sound and electromagnetic radiation absorbing ceiling board is provided to improve the characteristics of a fire-insistent and electromagnetic radiation barrier by bonding a metallic foil to a ceiling board. CONSTITUTION: A fire-insistent sound and electromagnetic radiation absorbing ceiling board has a thickness of 1 mm to 30 mm. The fire-insistent sound and electromagnetic radiation absorbing ceiling board comprises a layer which is composed of a rock wool of 67-92 % by weight, a beaten pulp of 0.5-8 % by weight, a cohesive material of 2-13 % by weight, which is produced from a resin, an agglutination material of 0.15-1 % by weight, which is composed of an organic macromolecule resin and an inorganic salt, and a carbon fiber of 0.5-10 % by weight. The carbon fiber gives the characteristic of an electromagnetic radiation absorbing to the fire-insistent sound and electromagnetic radiation absorbing ceiling board.</p> |
