| 摘要 |
<p>PURPOSE:To enable protection of an electronic apparatus from an electric wave by making the title board of a hardened body of a composition prepared by mixing ceramic powder particles formed of baked clay and tiny pieces of vegetable matter in cement mortar. CONSTITUTION:The title board is made up of a hardened body of a composition prepared by mixing ceramic powder particles formed of baked clay and tiny pieces of vegetable matter in cement mortar. Accordingly, reflection and absorption of an electromagnetic wave thereby are considerably larger, that is, 2 to five times and 10 to 180 times larger respectively, than ones by panels contrived heretofore, and the board displays a high performance of interrupting the electromagnetic wave. A panel 1 thus prepared and having a thickness of 2 to 5cm has high practicality as an electromagnetic wave absorbing material. An apparatus such as a computer can be protected thereby.</p> |
