THREE-DIMENSIONAL REINFORCED COMPOSITE AND ITS MANUFACTURE

摘要

PURPOSE:To obtain a three-dimensional reinforced composite whose reinforcing effect is sufficient, by a method wherein only a short fiber of a ferromagnetic material is oriented within a magnetic field, and random orientation of the major part of the short fibers of non-magnetic material is performed in a two-dimensional state. CONSTITUTION:Epoxy resin is pressed into a molding tool 3 while vacuum drawing from the molding tool 3. Then a magnetic field is generated with a magnetic pole 2, and a line of magnetic force is generated between magnetic material parts 3a within the molding tool 3. Randam orientation of a short fiber 5 of a non-magnetic material is performed in a two-dimensional state in a flowing direction by the shearing force at the time of casting of the epoxy resin into the molding tool 3. A short fiber 4 of a ferromagnetic material is orientated in the direction of the line of magnetic force. The short fiber 4 is cured by performing pressurization through a magnetic pole 2 under this state. This reinforced material is obtained by applying orientation in an arbitrary direction due to the magnetic field in addition to the randam orientation due to a flow, accordingly a three-dimensional reinforced composite 6 whose reinforcing efficiency and quality are high is obtained.