| 摘要 |
PURPOSE:To obtain a turntable which has high density and a high internal loss with excellent creep rigidity, by using a mixture of olefin resin and an inorganic filler to produce the turntable. CONSTITUTION:It is desirable to use an ethylene homopolymer, a propylene homopolymer, an ethylen-propylene copolymer, etc. to the olefin resin especially with 50,000-300,000 molecular weight. This olefin resin can be replaced with the denatured olefin resin which is obtained by denaturing the olefin resin by means of unsaturated carboxylic acid or its derivative. An inorganic filler is equal to the one which is usually used for the synthetic resin or rubber and uses suitably a metal such as aluminum, copper, iron, etc. or a compound such as aluminum oxide, aluminum silicate, a glass fiber. |
