JP2006256202A5 - - Google Patents

Claims (12)

A preform base material in which three or more sheets in which reinforcing fibers are arranged are arranged in the thickness direction, and the sheets are partially joined, and the peel strength between the sheets changes in the thickness direction. A preform base material. A base material for preform in which four or more sheets in which reinforcing fibers are arranged are arranged in the thickness direction, and the sheets are partially joined, and the peel strength between the sheets is at least one side from the center. A preform substrate characterized by increasing or decreasing toward the surface. The preform substrate according to claim 1 or 2 , wherein a resin material containing a thermoplastic resin is disposed on at least one side of the sheet in which the reinforcing fibers are arranged. The preform base material according to any one of claims 1 to 3 , wherein an arrangement amount of a resin material including a thermoplastic resin arranged in each sheet is different. Peel strength between the sheets is in the range of 10~700N / ^{m 2,} preform substrate according to any one of claims 1 to 4. The preform substrate according to any one of claims 1 to 5 , wherein at least a part of the reinforcing fibers is carbon fiber. The preform substrate according to any one of claims 3 to 6 , wherein the amount of the resin material containing the thermoplastic resin is in the range of 0.5 to 20 wt% with respect to the reinforcing fiber. A preform obtained by shaping the preform substrate according to any one of claims 1 to 7 along a mold. Least the following steps (A) ~ (C) sequential method for producing a preform for a base material, characterized in that through the.
(A) A bonding functional material arranging step of arranging a resin material containing a thermoplastic resin on at least one surface of a sheet on which reinforcing fibers are arranged.
(B) The arrangement | positioning process which arrange | positions the sheet | seat which has arrange | positioned the resin material containing the said thermoplastic resin at least by the said (A) process in thickness direction.
(C) as the medium a resin material containing a thermoplastic resin, the bonding process of partially bonding the sheets to each other in a thickness direction. In the step (A), a resin material containing a thermoplastic resin, the deposit is heated reinforcing fiber sheet having an array of method of manufacturing a preform for a substrate according to claim 9. The method for producing a preform substrate according to any one of claims 9 and 10 , wherein in the step (B), sheets having different amounts of resin materials including a thermoplastic resin are arranged in the thickness direction. The manufacturing method of the base material for preforms in any one of Claims 9-11 which joins the sheet | seat which arranged the said reinforced fiber in the thickness direction by heating and pressurizing in the said process (C).