The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Dec. 15, 2016
Fuji Polymer Industries Co., Ltd., Nagoya-shi, Aichi, JP;
Shingo Kobayashi, Aichi, JP;
Mai Sugie, Aichi, JP;
Masakazu Hattori, Aichi, JP;
Toshihiko Komatsuzaki, Ishikawa, JP;
Fuji Polymer Industries Co., Ltd., Aichi, JP;
Abstract
A magneto-rheological elastomer composition () includes a matrix resin () and a magnetic powder (). The magnetic powder () is contained in an amount of 30 to 70% by volume based on 100% by volume of the composition. The magneto-rheological elastomer composition () has an Asker C hardness of 5 to 60 as determined by the Standard SRIS0101 of the Society of Rubber Science and Technology, Japan. The average particle size of the magnetic powder is preferably 2 to 500 μm, and the matrix resin is preferably an organopolysiloxane. The storage modulus of the magneto-rheological elastomer composition preferably changes by five times or more upon application of a magnetic force with a magnetic flux density of 200 mT. Thus, the present invention provides a magneto-rheological elastomer composition that greatly changes its storage modulus upon application of magnetism, a method for producing the same, and a vibration absorbing device including the same.