| abstract |
PURPOSE: To provide the titled composition having excellent electromagnetic shielding effect, rigidity, formability and heat resistance, useful as the housing of electronic appliances, etc., and composed of specific amounts of specific scaly non-metallic inorganic particles, specific electrically conductive fibrous material, electrically conductive fine particles, and a resin. n CONSTITUTION: The objective composition is prepared by mixing (A) 10W 50pts.wt. of scaly non-metallic inorganic particles 1 coated with an electrically conductive substance having a volume resistivity of ≤1Ω.cm (preferably silver, graphite, etc.) (preferably a mica-group mineral etc. having an average aspect ratio of ≥10 and coated with 1/5W1 times weight of an electrically conductive substance), (B) 1W20pts.wt. of electrically conductive fibrous material 2 (preferably metallic fibers, or organic fibers coated with metal or mixed with fine metal powder) and/or electrically conductive fine particles 3 (preferably silver, graphite, etc.) having volume resistivity of ≤1Ω.cm, and (C) 30W80pts.wt. of a resin 4 (e.g. polyvinyl chloride, etc.). n COPYRIGHT: (C)1984,JPO&Japio |