Taiyo Nippon Sanso Corporation

Toho Kasei Co., Ltd.

Kentaro Miyoshi

Toru Sakai

Katsunori Takada

Yasuhito Koda

Hirotaka Itami

Takeru Yajima

Hirokazu Yamamoto

Takafumi Nakagawa

Kazuya Ninomiya

Toshiyuki Abe

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 &#x3bc;m or less, and a temperature of the ketone-based solvent used in the first step is set to 20&#xb0; C. or less.

Method for producing composite resin particles, resin molded article, and composite resin particles

Provided is a composite resin material that yields a resin molded body which has not only a low volume resistivity but also excellent electroconductivity and/or antistatic properties and whose volume resistivity is unlikely to be increased even when subjected to, for example, a washing treatment with ozone water. The composite resin material contains a polychlorotrifluoroethylene and carbon nanotubes and has an average particle diameter of 500 &#x3bc;m or smaller.

Composite resin material and molded body

A composite resin material particle is produced by a method including the steps of: forming a mixed slurry containing a resin material particle and carbon nanotubes; supplying the mixed slurry to a pressure vessel, followed by supplying carbon dioxide with stirring an inside of the pressure vessel; holding the inside of the pressure vessel at a temperature and at a pressure which allow the carbon dioxide to be maintained in a subcritical or supercritical state; and transferring the carbon dioxide to the outside of the pressure vessel.

Composite resinous particles, method of producing composite resinous particles, composite resin molded body, and method of producing same

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Kai, Japan

Kentaro Miyoshi