| 摘要 |
PURPOSE:To obtain an electrically conductive polymer composition suitable as a shield for electromagnetic radiation, antistatic material, resistance heater, connector, etc., by compounding glass beads having diameter falling within a specific range and coated with Ni, Cu and/or Ag. CONSTITUTION:Glass beads surface-coated with 5-50wt.%, preferably 10-40wt.% of at least one kind of metal selected from Ni, Cu and Ag are produced e.g. by catalyzing the surface of glass beads having diameter of 10-100mum and sphericity (major diameter/minor diameter) of preferably 1-2 e.g. with Pd, dispersing the beads in an aqueous solution of at least one kind of salt of a metal selected from Ni, Cu and Ag and adding a reducing agent to the dispersion to effect electroless plating. The obtained metal-coated glass beads are compounded in a polymer (e.g. acrylic polymer or urethane polymer) in an amount of 25-95wt.% to obtain the objective conductive polymer composition.
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