Abstract: An object of the present invention is to reduce or eliminate a defect (e.g., a void) by achieving (i) a semipreg and a prepreg each of which allows a reduction in residual volatile component and (ii) methods for producing the semipreg and the prepreg, respectively, and consequently to achieve (iii) a fiber-reinforced composite material which has high heat resistance and superior mechanical strength and a (iv) a method for producing the fiber-reinforced composite material. The present invention attains the above object by providing, for example, a semipreg containing: powders of an imide oligomer; and reinforcement fibers, the imide oligomer being represented by a specific general formula (1).

Abstract: A composite material includes a base resin, a heat dissipation filler that is mixed into the base resin, hollow particles that are mixed into the base resin, hollow particles that are mixed into the base resin, and bubbles that are formed in the base resin.

Abstract: There is provided an electronic apparatus that comprises a housing, an imaging element disposed in the housing, a battery disposed in the housing, and a heat storage material filled in a space in the housing and thermally connected to at least one of the imaging element or the battery.

Abstract: There is provided an electronic apparatus that includes a housing. A control circuit is provided inside the housing, a battery is provided inside the housing, a heat storage material is provided between the control circuit and the battery inside the housing, and a gap is provided between the control circuit and the battery.

Abstract: There is provided an electronic apparatus including: a heating section; a heat storage section; a detection section configured to detect a heat storage amount of the heat storage section; and a control section configured to control operation of the heating section, based on the heat storage amount detected by the detection section.

Abstract: A terminally modified imide oligomer is represented by a specific formula including a 2-phenyl-4,4?-diaminodiphenylether residue or a 4-phenoxy-1,3-diaminobenzene residue. A varnish is obtained by dissolving the terminally modified imide oligomer. A cured product is obtained by heat-curing the terminally modified imide oligomer, and a film including the cured product has a tensile elongation at break of 10% or more. An imide prepreg is obtained by impregnating fibers with the varnish and then drying the impregnated fibers. A fiber-reinforced composite material is obtained by layering and then heat-curing the imide prepreg.

Abstract: There is provided an electronic apparatus including: a heating section; a heat storage section; a detection section configured to detect a heat storage amount of the heat storage section; and a control section configured to control operation of the heating section, based on the heat storage amount detected by the detection section.

Abstract: A terminally modified imide oligomer is represented by a specific formula including a 2-phenyl-4,4?-diaminodiphenylether residue or a 4-phenoxy-1,3-diaminobenzene residue. A varnish is obtained by dissolving the terminally modified imide oligomer. A cured product is obtained by heat-curing the terminally modified imide oligomer, and a film including the cured product has a tensile elongation at break of 10% or more. An imide prepreg is obtained by impregnating fibers with the varnish and then drying the impregnated fibers. A fiber-reinforced composite material is obtained by layering and then heat-curing the imide prepreg.

Abstract: There is provided an electronic apparatus including: a heating section; a heat storage section; a detection section configured to detect a heat storage amount of the heat storage section; and a control section configured to control operation of the heating section, based on the heat storage amount detected by the detection section.

Abstract: Provided is an electronic apparatus including: a housing; a control circuit provided inside the housing; a battery provided inside the housing; a heat storage material provided between the control circuit and the battery inside the housing; and a gap provided between the control circuit and the battery.

Abstract: An electronic apparatus includes: a housing; an imaging element disposed in the housing; a battery disposed in the housing; and a heat storage material filled in a space in the housing and thermally connected to the imaging element and/or the battery.

Abstract: There is provided an electronic apparatus including: a heating section; a heat storage section; a detection section configured to detect a heat storage amount of the heat storage section; and a control section configured to control operation of the heating section, based on the heat storage amount detected by the detection section.

Abstract: An imide resin composition including a terminal-modified imide oligomer of General Formula (1) and a thermoplastic aromatic polyimide of General Formula (2). (In Formula (1), either R1 or R2 shows a phenyl group and the other shows a hydrogen atom; R3 and R4 show a divalent residue of aromatic diamine; R5 and R6 show a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1, n?0, 1?m+n?20, and 0.05?m/(m+n)?1; and an arrangement of repeating units may be either a block or random.) (In Formula (2), R1 and R2 show a divalent residue of aromatic diamine; R3 shows a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1 and n?0, and an arrangement of repeating units may be either a block or random.

Abstract: Provided is a varnish including 1 to 500 parts by weight of an aromatic tetracarboxylic acid diester (A) represented by General Formula (1), 1 to 450 parts by weight of 2-phenyl-4,4?-diaminodiphenyl ether (B), 1 to 100 parts by weight of a 4-(2-phenylethynyl)phthalic acid monoester (C) represented by General Formula (2), and 100 parts by weight of an organic solvent having a boiling point of 150° C. or less at 1 atmosphere or a mixture of two or more of the organic solvents (D). The components (A), (B), and (C) are dissolved in the varnish. (In the formula, R1 is an aromatic tetracarboxylic acid diester residue; R2 and R3 are the same or different and are an aliphatic organic group or an aromatic organic group.) (In the formula, R4 and R5 are a hydrogen atom, an aliphatic organic group, or an aromatic organic group).

Abstract: An imide resin composition including a terminal-modified imide oligomer of General Formula (1) and a thermoplastic aromatic polyimide of General Formula (2). (In Formula (1), either R1 or R2 shows a phenyl group and the other shows a hydrogen atom; R3 and R4 show a divalent residue of aromatic diamine; R5 and R6 show a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1, n?0, 1?m+n?20, and 0.05?m/(m+n)?1; and an arrangement of repeating units may be either a block or random.) (In Formula (2), R1 and R2 show a divalent residue of aromatic diamine; R3 shows a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1 and n?0, and an arrangement of repeating units may be either a block or random).

Abstract: Provided is a varnish including 1 to 500 parts by weight of an aromatic tetracarboxylic acid diester (A) represented by General Formula (1), 1 to 450 parts by weight of 2-phenyl-4,4?-diaminodiphenyl ether (B), 1 to 100 parts by weight of a 4-(2-phenylethynyl)phthalic acid monoester (C) represented by General Formula (2), and 100 parts by weight of an organic solvent having a boiling point of 150° C. or less at 1 atmosphere or a mixture of two or more of the organic solvents (D). The components (A), (B), and (C) are dissolved in the varnish. (In the formula, R1 is an aromatic tetracarboxylic acid diester residue; R2 and R3 are the same or different and are an aliphatic organic group or an aromatic organic group.) (In the formula, R4 and R5 are a hydrogen atom, an aliphatic organic group, or an aromatic organic group.

Abstract: There is provided an electronic apparatus including: a heating section; a heat storage section; a detection section configured to detect a heat storage amount of the heat storage section; and a control section configured to control operation of the heating section, based on the heat storage amount detected by the detection section.

Abstract: An NOx detection apparatus does not always perform correction processing, but it determines whether to perform the correction processing on the basis of the result of a determination of whether a first Nox concentration is higher than a predetermined specific concentration. The first NOx concentration NOxpo calculated from a second pumping current Ip2 which changes with the actual NOx concentration. Therefore, the NOx detection apparatus can determine whether to correct the first NOx concentration NOxpo in accordance with the actual NOx concentration. Accordingly, the NOx detection apparatus can suppress a decrease in gas detection accuracy even in the case where the gas detection value based on the sensor output involves an error in a specific concentration range (concentration range of 90 ppm or higher).

Abstract: An imide resin composition including a terminal-modified imide oligomer of General Formula (1) and a thermoplastic aromatic polyimide of General Formula (2). (In Formula (1), either R1 or R2 shows a phenyl group and the other shows a hydrogen atom; R3 and R4 show a divalent residue of aromatic diamine; R5 and R6 show a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1, n?0, 1?m+n?20, and 0.05?m/(m+n)?1; and an arrangement of repeating units may be either a block or random.) (In Formula (2), R1 and R2 show a divalent residue of aromatic diamine; R3 shows a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m?1 and n?0, and an arrangement of repeating units may be either a block or random.

Abstract: A novel resin-transfer-moldable terminal-modified imide oligomer having a residue of a tetravalent aromatic tetracarboxylic acid and represented by general formula (1), and the imide oligomer contains an oligomer where n is 0 in an amount of 10% by mole or more. In the formula, R1 and R2 are a hydrogen atom or an aromatic hydrocarbon group having 6 to 10 carbon atoms, and one of R1 and R2 is the aromatic hydrocarbon group having 6 to 10 carbon atoms; R3 is an aromatic organic group surrounded by four carbonyl groups in the aromatic tetracarboxylic acid, and for a formula where n is 2 or more, Ras are optionally the same as or different from each other; and n is an integer of 0 or more and 6 or less.