Patent ID: 9181640
Filing Date: 2015-11-10
Classification: B29B,B29C,B29K,C08K,C08L,D02G,D06M,D10B,Y10T

Abstract:
1. A carbon-fiber chopped strand composed of 30,000 to 120,000 carbon fiber single filaments and 1 to 10 mass % of a sizing agent which bundles the single filaments, in which the single-filament diameter of carbon fiber is 3 to 15 μm, carbon-fiber chopped strand the ratio (Dmax/Dmin) of the maximum diameter (Dmax) and the minimum diameter (Dmin) in a section intersecting at right angles with the fiber axis direction of chopped strand is 1.0 to 1.8, the length (L) of chopped strand along the fiber direction is 3 to 10 mm, the ratio (L/Dmin) of the length (L) of chopped strand along the fiber direction and the minimum diameter (Dmin) of chopped strand is 4 or smaller, and the repose angle of chopped strand is 10 to 30°.