| 摘要 |
Fine core/shell composite particles comprising fine inorganic nanometer-size particles as cores and a fluoropolymer having units derived from a fluoromonomer as shells, their production method and their application are provided. <??>The fine composite particles of the present invention are fine composite particles comprising fine inorganic nanometer-size particles, the surface of which is covered with a fluoropolymer having units derived from a fluoromonomer, wherein the proportion of the fine inorganic particles is from 1 to 90 mass%, and the fluoropolymer is a fluoropolymer having units derived from a fluoromonomer having a polymerizable unsaturated group in which a carbon atom has a fluorine atom bonded thereto. The method for producing fine composite particles of the present invention is a method for producing the above fine composite particles, which comprises polymerizing the above fluoromonomer by seed polymerization in a polymerization system wherein fine inorganic nanometer-size particles are dispersed in an aqueous medium in the presence of a surfactant. <??>A powder comprising the above fine composite particles is useful as a bulking agent to be blended with a thermoplastic polymer or a thermosetting resin, and a thermoplastic polymer or a thermosetting resin containing the fine composite particles is used as a molding material. Further, a powder of the fine composite particles in which the proportion of the fine inorganic particles is low can be used by itself as a molding material. |
