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1.发明授权公开(公告)号：US11149121B2
公开(公告)日：2021-10-19
申请号：US16616645
申请日：2018-06-27
发明人： Yasuhito Koda , Kentaro Miyoshi , Katsunori Takada , Toru Sakai
摘要： An object of the present invention is to produce composite resin particles in which the original physical properties of PTFE derived from fine powder are maintained, and the present invention provides a method for producing composite resin particles, wherein the method includes: a first step in which fine powder containing polytetrafluoroethylene obtained by emulsion polymerization is pulverized in the presence of a ketone-based solvent; a second step in which the pulverized fine powder and a carbon nanomaterial are dispersed in the ketone-based solvent to produce a composite resin particles dispersion; a third step in which the composite resin particles are produced by removing the ketone-based solvent from the composite resin particle dispersion; and wherein the fine powder is pulverized so as to have an average particle diameter of 50 μm or less, and a temperature of the ketone-based solvent used in the first step is set to 20° C. or less.
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公开(公告)号：US10920059B2
公开(公告)日：2021-02-16
申请号：US16631959
申请日：2018-07-20
发明人： Hirokazu Yamamoto , Takafumi Nakagawa , Hirotaka Itami , Isamu Noguchi , Katsunori Takada , Yasuhito Koda , Toru Sakai
摘要： An object of the present invention is to provide a resin material that yields a resin molded article which has not only a low volume resistivity but also excellent weldability and cleanliness and whose volume resistivity is unlikely to be increased even when subjected to an SPM cleaning treatment and the like. The present invention provides a composite resin material that contains a modified polytetrafluoroethylene and carbon nanotubes and has an average particle diameter of 500 μm or smaller.
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