| abstract |
PURPOSE: To produce a magnetic rubber in which a magnetic powder is uniformly dispersed, by adding a specified magnetic fluid and vulcanization additives and molding the mixture by vulcanization. n CONSTITUTION: 100pts.wt. oleophilic elastomer (e.g., polynorbornene) is mixed with 500W2500pts.wt. magnetic fluid formed by dispersing a magnetic powder in an oil (e.g., higher alkyl group-substituted naphthalene or eicosyl-naphthalene) compatible with the elastomer and vulcanization additives such as a vulcanizer and a vulcanization accelerator, and the mixture is molded by vulcanization. n COPYRIGHT: (C)1988,JPO&Japio |