An aluminum borate whisker reinforced and toughened non-metallic matrix composite is provided, which specifically includes a non-metallic material reinforced and toughened with aluminum borate whiskers. The composite exhibits a higher bending strength and fracture toughness and a higher wear resistance. A method for preparing the composite is also provided. The method includes mixing the aluminum borate whiskers and the non-metallic material to form a mixture; and sintering the mixture by a vacuum hot press method, or molding the mixture.

[Problem] A metal-fiber reinforced resin material composite is provided which improves the shear strength between a metallic member and a fiber reinforced material by more strongly bonding the metallic member and the fiber reinforced resin member, and which is very light and has excellent workability while increasing strength. [Solution] This metal-fiber reinforced resin material composite is provided with a metallic member and with a fiber reinforced resin material that is stacked on at least one surface of the metallic member and combined with the metallic member, wherein the fiber reinforced resin material comprises a matrix resin containing a thermoplastic resin, a reinforcing fiber material included in the matrix resin, and a resin layer interposed between the reinforcing fiber material and the metallic member and comprising a resin of the same type as the matrix resin. The shear strength of the metallic member and the fiber reinforced resin material is greater than or equal to 0.8 MPa.

Provided is a gas barrier packaging material including a base and a cured resin layer, the base having a surface constituted of an inorganic substance. The cured resin layer is a cured product of an epoxy resin composition including an epoxy resin, an epoxy resin curing agent containing an amine-based curing agent, and an acidic compound, and a ratio (basic nitrogen/acid groups) of a molar equivalent of basic nitrogen in the epoxy resin composition to a molar equivalent of acid groups derived from the acidic compound is from 0.60 to 20.

The present invention provides an epoxy resin composition containing:

an epoxy resin [A] that is a compound represented by Chemical formula (1) shown below:

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wherein R.sub.1 to R.sub.4 each independently represent one selected from the group consisting of a hydrogen atom, an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, and a halogen atom, and X represents one selected from —CH.sub.2—, —O—, —S—, —CO—, —C(═O)O—, —O—C(═O)—, —NHCO—, —CONH—, and —SO.sub.2—;

a bifunctional epoxy resin [B] having an amine type glycidyl group;

a curing agent [C] containing an aromatic polyamine, and having at least one substituent selected from an aliphatic substituent, an aromatic substituent, and a halogen atom at an ortho position with respect to an amino group; and

a particulate rubber component [D].

Provided is a composite prepreg including a region (A) containing a thermosetting resin (a) and a reinforcing fiber and a region (B) containing a thermosetting resin (b) and a reinforcing fiber, the composite prepreg satisfying conditions (i) and (ii) or satisfying conditions (ii) and (iii):

(i) The thermosetting resin (b) is a resin having a gel time Tb longer than a gel time Ta of the thermosetting resin (a), and in at least a part of a temperature range of 40° C. or more and 180° C. or less, satisfy Ta/Tb 0.8;

(ii) A ratio of the region (A) on a surface of the composite prepreg is 20 to 80%; and

(iii) The thermosetting resin (b) is a resin having a higher heat generation starting temperature Eb than a heat generation starting temperature Ea of the thermosetting resin (a), and in a differential scanning calorimetry chart obtained by measuring at 5° C./min with 40° C. as a starting temperature, satisfy Eb−Ea≥30.

The present invention relates to a method of producing a prepreg, in which a matrix resin is applied to a reinforcing fiber sheet, where the sheet can continuously run without clogging due to generated fuzz, even at a high running speed, and where the sheet can be efficiently impregnated with the matrix resin. The prepreg is produced by a method which includes a step of allowing a reinforcing fiber sheet to pass horizontally or slantingly through the inside of a coating section storing a matrix resin to apply the matrix resin to the reinforcing fiber sheet, where the coating section includes a liquid pool and a narrowed section which are in communication with each other, where the liquid pool has a portion whose cross-sectional area decreases continuously along a running direction of the reinforcing fiber sheet, and wherein the narrowed section has a slit-like cross-section and has a smaller cross-sectional area than the largest cross-sectional area of the liquid pool.

An ablative composite material including a matrix and a reinforcement, characterised in that: the matrix is a phenolic resin or an epoxy resin and the reinforcement is formed of short carbon fibres with a length of between 0.5 mm and 20 mm, and a diameter of between 6 μm and 20 μm.

The present invention provides a fiber-reinforced resin which has excellent tensile shear joining strength and is able to be integrated with another structural member with high productivity by means of thermal welding, thereby being suitable as a structural material. The present invention is a fiber-reinforced resin which contains constituents (A), (B) and (C), while having a multilayer structure that is composed of a thermosetting resin layer that is formed of (B) a thermosetting resin, a thermoplastic resin layer that is formed of (C) a thermoplastic resin, and a mixed layer that is present between the thermoplastic resin layer and the thermosetting resin layer, while being obtained by mixing the thermoplastic resin (C) and the thermosetting resin (B), in such a manner that the thermoplastic resin layer is present in the surface. With respect to this fiber-reinforced resin, at least some of (A) reinforcing fibers are present in the mixed layer. (A) Reinforcing fibers (B) Thermosetting resin (C) Thermoplastic resin

An object is to provide an incised prepreg having desired formability stably, wherein the incised prepreg contains unidirectionally oriented reinforcing fibers and matrix resin and has an incised region containing a plurality of incisions made to divide reinforcing fibers, wherein the incised region includes a plurality of incision rows, each containing a plurality of incisions having nearly equal fiber-directionally projected lengths and aligned at substantially constant intervals in the fiber direction and wherein the distance L1, measured at right angles to the fiber direction, between two incision rows located on either side of an arbitrarily selected incision row and the fiber-directionally projected length L2 of the latter incision row satisfy the following relation: −1.0<L1/L2<0.5.

The present disclosure is directed to multiphase dispersions and nanaocomposites comprised of continuous matrix or binder and endohedrally impregnated cellular carbon filler. These nanocomposites may exhibit superior mechanical, electrical, thermal, or other properties, and may be used in a variety of products, including hierarchical fiber-reinforced composites with nanocomposite matrices.