| 摘要 |
PROBLEM TO BE SOLVED: To obtain a vibrationproof composition which is hardly influenced by temperature change and has stable and excellent vibrationproof properties by preparing the same from specified amounts of a viscous liquid and a plurality of powders having a specified difference in average particle size. SOLUTION: This composition comprises 95-25 wt.% viscous liquid preferably being a silicone oil and 5-75 wt.% powder comprising a plurality of powders of which the difference in average particle size is 10μm or more, each powder preferably having an average particle size of 1-200μm, A straight-chain silicone oil having a kinematic viscosity (25 deg.C) of 100-1,000,000 mm2/s is preferable as the liquid, examples being a trimethylsiloxy-blocked dimethylpolysiloxane and a trimethylsiloxy-blocked dimethylsiloxane-methylphenylsiloxane copolymer. Examples of the powder are inorganic powders such as silica, CaCO3, and glass powders; organic resin powders such as PE resin and acrylic resin powders; and a silicone resin powder.
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