KR870011406A - Compound tubular - Google Patents

Abstract

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Description

Compound tubular

Since this is an open matter, no full text was included.

Claims (7)

At least one fiber selected from among a group of fibers composed of a lower prepreg sheet 1 formed by impregnating the carbon fibers 1a in parallel and impregnating the thermosetting resin 1b with glass fibers, aramid fibers, and alumina fibers ( The first prepres formed of a second prepreg sheet 2 formed by impregnating or fabricating 2a) in parallel and impregnated with the thermosetting resin 2b, and impregnating the uncured thermosetting resin 1b. The lateral edge 3 of the leg sheet 1 that intersects the grooming direction of the carbon fiber 1a is in a range of 25 to 70 degrees with respect to the grooming direction of the fiber passing through the center of the first prepreg sheet 1. Formed to have an angle of, The side edge 4 of the second prepreg sheet 2 impregnated with the uncured thermosetting resin 2b is connected to the side edge 3 of the first prepreg sheet 1 described above. To form a connecting zone (6), The first and second prepreg sheets 1 and 2 are wound around a mandrel 7 extending along the grooming direction of the carbon fibers 1a of the first prepreg sheet 1, The tubular body 8 is formed, and in the said connection area 6, after winding the circumference | surroundings of the said tubular body 8 at least twice in spiral shape, the 1st which comprises this tubular body 8 is comprised. And a composite tubular body produced by heating the respective thermosetting resins (1b) and (2b) of the second prepreg sheets (1) and (2). 2. The connection zone (6) according to claim 1, wherein the connection section (6) consists of side edges (3), (4) of the first and second prepreg sheets (1) and (2) which are in contact with each other and The composite tubular body is connected to each other by heating the thermosetting resin (1b) (2b) of the uncured state in the said 1st and 2nd prepreg sheet (1) and (2), respectively. 2. The connecting section (96) according to claim 1, wherein the connecting section (96) consists of side edges (3) and (4) of the first and second prepreg sheets (1) and (2) which are in contact with each other, Composite tubular body, characterized in that they are connected to each other by a tape (5) provided on at least one surface of each of the side edges (3) and (4). 4. A composite tube forming body according to claim 3, wherein the tape (5) consists of a hot-melt film. 2. The connection zone (6) according to claim 1, wherein the connection section (6) consists of side edges (3), (4) of the first and second prepreg sheets (1) and (2) which are in contact with each other; And the glass scrim sheet by a glass scrim sheet adhered to any one of the first and second prepreg sheets 1 and 2 superimposed on the side edges 3 and 4. By connecting the first and second prepreg sheets 1 and 2 superimposed on each other by heating the uncured thermosetting resins 1b and 2b to each other, thereby connecting them. Composite tubular body. 2. The connection zone (6) according to claim 1, wherein the connection section (6) consists of side edges (3), (4) of the first and second prepreg sheets (1) and (2) which are in contact with each other and The nonwoven fabric by means of a nonwoven fabric made of carbon fibers bonded to any one of the first and second prepreg sheets 1 and 2 overlapping at the side edges 3, 4. The first and second prepreg sheets 1 and 2 superimposed on each other by a fabric are connected to each other by heating the uncured thermosetting resins 1b and 2b. Composite tubular body made of. The first and second prepreg sheets 1 and 2, respectively, are in the form of a joined body in which at least two layers are shifted from each other at the side edges 3 and 4. The impinging urges 10 and 11 of the first and second prepreg sheets 1 and 2, in which the connecting zones 6 overlap each other and abut each other; Consisting of side edges 3 and 4 of 20 and 21, 110, 111 and 112, and 210, 211 and 212, At the side edges 3 and 4, the impulses 10 and 11 and 20 and 21 and 110, 111 and 112 and 210, which are offset from each other, The uncured liquid curable resins 1b and 2b impregnated in each of the first and second prepreg sheets 1 and 2, in which 211 and 212 overlap each other, are heated. The composite pipe | tube formation body characterized by connecting these by connecting. ※ Note: The disclosure is based on the initial application.