Flame retardant resin composition

摘要

A flame retardant resin composition comprising a thermoplastic resin/flame retardant mixture having fluororesin fibrils dispersed therein, wherein, when a breakage-exposed surface of a tensile force-broken piece of a test sample prepared from the flame retardant composition by injection molding so as to be used in a flame retardancy test by the Vertical Burning Method described in UL-Subject 94 is examined by means of a SEM with respect to a predetermined area of 7 mu mx7 mu m wherein the fibrils are dispersed in the entire region of the predetermined area, the dispersed fibrils exhibit a dispersion morphology in which the fibrils have a diameter of 0.5 mm or less over lengths of the fibrils which lengths correspond to 50% or more of the total length of the fibrils and in which the fibrils have a network configuration comprising one or more intersecting points of fibrils and/or a branched configuration comprising one or more branching points of fibrils, wherein 5 or more intersecting points and/or branching points are present in the predetermined area. The resin composition of the present invention is advantageous not only in that it has high flame retardancy, especially a high property of dripping-prevention upon being burnt, but also in that a shaped article obtained from the resin composition has excellent appearance.