Mitsubishi Chemical Corporation

Yuma Furuhashi

Masahiro Ichino

Kazuhisa Ikeda

Satoshi Okamoto

A prepreg sheet includes a plurality of prepreg tapes each of which overlaps with a corresponding adjacent prepreg tape for a suitable overlapping length. The plurality of prepreg tapes each contain a reinforcing fiber bundle that is impregnated with a thermosetting resin composition. According to a method for manufacturing a preform, for example, a primary premolded article is manufactured by preforming an intermediate base material containing a reinforcing fiber base material and a matrix resin composition, and a secondary premolded article is manufactured by preforming the primary premolded article on which the intermediate base material is further placed.

Prepreg sheet and manufacturing method therefor, fiber-reinforced composite material molded article and manufacturing method therefor, and method for manufacturing preform

A prepreg sheet () is formed by stacking a plurality of unit layers () In the unit layers (), prepreg tapes (), in which a reinforced fiber bundle is impregnated with a thermosetting matrix resin composition, are disposed in rows a plurality of times. One or more of the unit layers () has a gap (G) between adjacent prepreg tapes (), and the width thereof is 10% or less of the width of the narrower of the adjacent prepreg tapes ().

Prepreg sheet, method for manufacturing same, unit layer with a covering material, method for manufacturing fiber-reinforced composite, and fiber-reinforced composite

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Chiyoda-ku, Japan

Yuma Furuhashi