LONG FIBER-REINFORCED POLYLACTIC ACID-BASED RESIN COMPOSITION AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a long fiber-reinforced polylactic acid-based resin composition for providing a biodegradable plastic molding having mechanical strength and heat resistance (high deflection temperature under load) and to provide a method for producing the same. SOLUTION: The long fiber-reinforced polylactic acid-based resin composition comprises a polylactic acid-based resin, a reinforced fiber having substantially≥2 mm fiber length and talc having 0.1-3μm average particle diameter in which the amount of the reinforced fiber is 5-70 mass% in the composition, the amount of the talc is 5-25 mass% in the composition and the reinforced fiber is treated with a sizing agent containing a urethane resin and having≤20 mass% epoxy resin content. The continuous material of a reinforced fiber bundle treated with the sizing agent containing a urethane resin and having≤20 mass% epoxy resin content is impregnated with a melt comprising the polylactic acid-based resin and 5.5-33 parts by mass of talc having 0.1-3μm average particle diameter based on 100 parts by mass of the polylactic acid-based resin to give the composition containing 5-70 mass% of the reinforced fiber. COPYRIGHT: (C)2005,JPO&NCIPI