Reinforced fiber laminate sheet, fiber-reinforced resin molded body, and method for manufacturing reinforced fiber laminate sheet
A technology for reinforcing fibers and laminated sheets, which can be used in synthetic resin layered products, chemical instruments and methods, coatings, etc., and can solve problems such as high cost, adverse effects on mechanical properties, and wrinkles.
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[0193] Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to this.
[0194] First, evaluation of formability, shape stability, and fiber-reinforced resin molded article of the reinforced fiber laminated sheet is shown below.
[0195] Regarding the shapeability of the reinforcing fiber laminated sheet, evaluation was performed by the following three types of shapes, that is, for a simple element mold (a shape obtained by cutting an ellipsoidal shape along the horizontal direction) ( Figure 7 ), to the model shape mold 1 (imitating the shape of the Z-shaped stringer used in the structure of the skin (skin) and stringer (stringer) of the aircraft) ( Figure 8 ), and to the model shape mold 2 (to imitate the shape of the trunk lid of a car) ( Figure 9 ) of the endowment. The evaluation criteria for the formability of the reinforcing fiber laminated sheet are shown below.
[0196] AA: No wrinkle
[0197] A: There are no more ...
reference example 1
[0210] [Reference Example 1] Reinforcing Fiber Bundle 1
[0211] Carbon fibers "Torayca" T700SC (number of single yarns: 24,000) manufactured by Toray Co., Ltd. were opened so as to have a width of 25 mm by an opener equipped with an opener roll. Next, a bisphenol A type epoxy resin (XB3366 manufactured by Huntsman Co., Ltd. XB3366, T g : 80°C) to form a fixed material. Furthermore, the carbon fiber to which the fixing material was adhered was heated at 200° C. in a heating device to melt a part of the fixing material so that the fixing material would not come off in the subsequent process, thereby obtaining the reinforcing fiber bundle 1 .
reference example 2
[0212] [Reference example 2] Matrix resin
[0213] As the matrix resin, a two-component epoxy resin (main ingredient: jER828 manufactured by Mitsubishi Chemical Corporation, curing agent: acid anhydride-based curing agent manufactured by Toray Corporation) was used.
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