Reinforced fiber/resin fiber composite, and method for manufacturing same

Abstract

A reinforced fiber/resin fiber composite is provided in which the ratio and arrangement of a long fiber and a thermoplastic resin fiber included in an intermediate material are accurately controlled to simultaneously provide good impregnation characteristics of the long fiber and good interfacial characteristics between the long fiber and the thermoplastic resin. A reinforced fiber/resin fiber composite ( 50 ) is provided which is an intermediate material for a long-fiber reinforced thermoplastic resin structure. The reinforced fiber ( 15 ) is a long fiber extending in a longitudinal direction. The resin fiber ( 25 ) includes at least two thermoplastic resin fibers. The at least two thermoplastic resin fibers are arranged around the reinforced fiber ( 15 ) to surround the reinforced fiber ( 15 ).

1 . A reinforced fiber/resin fiber composite which is an intermediate material for a long-fiber reinforced thermoplastic resin structure, wherein
 the reinforced fiber is a long fiber extending in a longitudinal direction,   the resin fiber includes a polypropylene (PP) fiber and an acid-modified polypropylene (MAPP) fiber, and   the polypropylene (PP) fiber and the acid-modified polypropylene (MAPP) fiber are arranged around the reinforced fiber to surround the reinforced fiber.   
     
     
         2 . The reinforced fiber/resin fiber composite of  claim 1 , wherein
 the polypropylene (PP) fiber and the acid-modified polypropylene (MAPP) fiber are braided at a predetermined angle with respect to the longitudinal direction of the long fiber to form a braid around the reinforced fiber.   
     
     
         3 - 7 . (canceled) 
     
     
         8 . A reinforced fiber/resin fiber composite which is an intermediate material for a long-fiber reinforced thermoplastic resin structure, wherein
 the reinforced fiber is a long fiber extending in a longitudinal direction,   the resin fiber includes a polylactic acid (PLA) fiber and a polyoxymethylene (POM) fiber, and   the polylactic acid (PLA) fiber and the polyoxymethylene (POM) fiber are arranged around the reinforced fiber to surround the reinforced fiber.   
     
     
         9 . The reinforced fiber/resin fiber composite of  claim 8 , wherein
 the polylactic acid (PLA) fiber and the polyoxymethylene (POM) fiber are braided at a predetermined angle with respect to the longitudinal direction of the long fiber to form a braid around the reinforced fiber.   
     
     
         10 . A reinforced fiber/resin fiber composite which is an intermediate material for a long-fiber reinforced thermoplastic resin structure, wherein
 the reinforced fiber is a long fiber extending in a longitudinal direction,   the resin fiber includes at least two thermoplastic resin fibers selected from the group consisting of a polylactic acid (PLA) fiber, polyoxymethylene (POM) fiber, acid-modified polypropylene (MAPP) fiber, polyphenylene sulfide (PPS) fiber, and polyether ketone ketone (PEKK) fiber, and   the at least two thermoplastic resin fibers are arranged around the reinforced fiber to surround the reinforced fiber.   
     
     
         11 . The reinforced fiber/resin fiber composite of  claim 10 , wherein
 the at least two thermoplastic resin fibers are braided at a predetermined angle with respect to the longitudinal direction of the long fiber to form a braid around the reinforced fiber.   
     
     
         12 . A reinforced fiber/resin fiber composite which is an intermediate material for a long-fiber reinforced thermoplastic resin structure, wherein
 the reinforced fiber is a long fiber extending in a longitudinal direction,   the resin fiber includes at least two thermoplastic resin fibers,   the at least two thermoplastic resin fibers are selected to have complementary physical properties after thermoforming, and   the at least two thermoplastic resin fibers are arranged around the reinforced fiber to surround the reinforced fiber.   
     
     
         13 . The reinforced fiber/resin fiber composite of  claim 12 , wherein
 the at least two thermoplastic resin fibers are braided at a predetermined angle with respect to the longitudinal direction of the long fiber to form a braid around the reinforced fiber.