JP4720877B2 - Structural members and radomes - Google Patents

Description

  The present invention relates to a structural member made of fiber reinforced resin that requires good mechanical and structural characteristics, and further to a radome for an antenna device made of fiber reinforced resin that requires electrical characteristics.

  Fiber reinforced resin is mainly used to reduce the weight of machine structural parts such as ships, aircrafts, and automobiles, and is also used for rods and frame structural members for sports and leisure goods. It has come to practical use. Carbon fibers and glass fibers are generally used as the fiber reinforced resin, and these fibers are excellent in rigidity, but generally the strength of the single fiber is lower than other materials (for example, metals). In addition, organic fibers such as ultra high molecular weight olefins are used as fibers having excellent properties in terms of light weight and strength. For example, Patent Document 1 describes a bumper in which a fiber reinforced resin made of organic fibers is disposed around a foamed polyethylene foam in order to increase the strength of a bumper portion of an automobile.

  On the other hand, for a radome for an antenna device that requires electrical characteristics, for example, Patent Document 2 discloses a conventional technique. In the radome described in Patent Document 2, a core made of a low-density dielectric such as a foam is sandwiched between a first composite material skin having reinforcing fibers in a matrix resin and a second opposing composite material skin. It is a radome using a sandwich structure plate and is said to be excellent in strength and rigidity. In addition, a polyester-polyarylate fiber is used as a fiber, and a sandwich structure in which a low-density dielectric is sandwiched can reduce the overall dielectric constant, thereby improving radio wave transmission.

JP 08-276801 A Special table 2007-519298

  When fiber reinforced resin with glass fiber as reinforced fiber is used, a large amount of glass fiber must be added to the matrix resin in order to obtain the rigidity required for structural members and especially radomes of antenna devices. There is a problem that the radome film becomes thick and the weight increases. On the other hand, when organic fibers such as polyester-polyarylate fibers or ultra-high-molecular olefin fibers are used as reinforcing fibers, the weight is reduced, but the strength of the structural member and radome after molding increases, and after molding, There was a problem that machining for providing screw mounting holes and the like became difficult. In the structural member and radome described in Patent Document 1 and Patent Document 2, the reinforcing fiber (polyester-polyarylate fiber, ultra-high molecular olefin fiber, etc.) used for the entire structural member is the same, and the molded structural member In order to attach a radome to a finished product (such as an automobile or an antenna device), it is difficult to additionally process a screw attachment hole due to the strength of the reinforcing fiber.

  The present invention has been made to solve the above-described problems, and is to obtain a structural member and a radome using a fiber reinforced resin that is excellent in structural strength and that can be machined after molding. Objective.

  The structural member according to the invention of claim 1 includes a main structure part in which a matrix resin is impregnated in an olefin woven cloth or a laminate of an olefin woven cloth and a glass cloth, an attachment part in which the glass cloth is impregnated with a matrix resin, and this attachment. A glass cloth extending from the portion and an olefin woven fabric extending from the main structure portion are laminated and provided with a connection portion impregnated with a matrix resin.

  According to a second aspect of the present invention, there is provided a structural member comprising an olefin woven fabric or a main structural portion in which a laminate of an olefin woven fabric and a glass cloth is impregnated with a matrix resin, a mounting portion in which the glass cloth is impregnated with a matrix resin, A glass cloth extending from the portion and an olefin woven fabric extending from the main structure portion are abutted and provided with a connecting portion impregnated with a matrix resin.

  A structural member according to a third aspect of the present invention is the structural member according to the first or second aspect of the present invention, wherein the glass cloth of the connecting portion and the olefin woven fabric are stitched together.

  According to a fourth aspect of the present invention, there is provided a structural member in which an olefin woven fabric or a laminate of an olefin woven fabric and a glass cloth is impregnated with a matrix resin, an attachment portion in which the glass cloth is impregnated with a matrix resin, and the attachment. A glass cloth fiber extending from the portion and an olefin woven fiber fiber extending from the main structure portion are knitted and provided with a connection portion impregnated with a matrix resin.

  A structural member according to a fifth aspect of the present invention is the structural member according to the first to fourth aspects of the present invention, wherein the olefin woven fabric is surface-modified by corona discharge machining.

  The radome according to the invention of claim 6 includes a dome portion in which an olefin woven fabric or a laminate of an olefin woven fabric and a glass cloth is impregnated with a matrix resin, a mounting portion in which the glass cloth is impregnated with a matrix resin, and the mounting portion. An extending glass cloth and an olefin woven fabric extending from the dome are laminated and provided with a connecting portion impregnated with a matrix resin.

  The radome according to the invention of claim 7 includes a dome portion in which an olefin woven fabric or a laminate of an olefin woven fabric and a glass cloth is impregnated with a matrix resin, a mounting portion in which the glass cloth is impregnated with a matrix resin, and the mounting portion. The extending glass cloth and the olefin woven fabric extending from the dome are abutted and provided with a connecting portion impregnated with a matrix resin.

  The radome according to the invention of claim 8 is the radome according to the invention of claim 6 or claim 7, wherein the glass cloth of the connecting portion and the olefin woven fabric are stitched together.

  The radome according to the invention of claim 9 includes a dome portion in which an olefin woven fabric or a laminate of an olefin woven fabric and a glass cloth is impregnated with a matrix resin, an attachment portion in which the glass cloth is impregnated with a matrix resin, and the attachment portion. A fiberglass cloth fiber extending and a olefin woven fiber fiber extending from the dome part are knitted and provided with a connection part impregnated with a matrix resin.

  The radome according to the invention of claim 10 is the radome according to inventions of claims 6 to 9, wherein the olefin woven fabric is surface-modified by corona discharge machining.

  According to invention of Claim 1 thru | or 5, the main structure part which impregnated matrix resin in the olefin woven cloth or the lamination | stacking of the olefin woven cloth and the glass cloth, and the attachment part which impregnated the matrix resin in the glass cloth And a glass cloth extending from the attachment portion, and an olefin woven fabric extending from the main structure portion is laminated, butted or knitted, and includes a connection portion impregnated with a matrix resin. The structural strength of the main structure portion is high, and the machinability at the mounting portion can be improved.

  According to invention of Claim 6 thru | or 10, The dome part which impregnated matrix resin to the olefin woven cloth or lamination | stacking of the olefin woven cloth and the glass cloth, and the attachment part which impregnated the matrix resin to the glass cloth, The dome portion includes a glass cloth extending from the attachment portion and a connection portion in which the olefin woven fabric extending from the dome portion is laminated, butted or knitted, and impregnated with a matrix resin. Therefore, the machinability at the mounting portion can be improved.

Embodiment 1

  A structural member according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 is an external view of a panel-like structural member as a structural member according to Embodiment 1 of the present invention, and FIG. 2 is an external view of a pipe-like structural member as a structural member according to Embodiment 1 of the present invention. is there. In FIG. 1, 1 is a main structure portion that occupies most of the panel surface of a panel-like structural member, 2 is an attachment portion of an edge or end of the main structure portion 1, and 3 is a machined hole provided in the attachment portion. It is. In FIG. 1, the attachment portion 2 is provided so as to surround the periphery of the main structure portion 1, but depending on how the structural member is attached to a product such as an automobile, the attachment portion is provided so as to surround the periphery of the main structure portion 1. 2 need not be provided, and may be provided on one side or several sides of the main structure 1. In FIG. 1, the main structure portion 1 is surrounded by a line for the sake of explanation, but a line drawn schematically to distinguish the main structure portion 1 and the attachment portion 2 having different fiber types as respective regions. It does not mean that a line has to appear on the actual panel surface. In FIG. 2, 4 is a main structure portion that occupies most of the pipe-shaped structural member in the axial direction, 5 is an attachment portion at the end of the pipe, and 6 is a machining hole provided in the attachment portion 5.

  Region A having the material composition of the main structural portions 1 and 4 (region impregnated with an olefin woven fabric or a laminate of an olefin woven fabric and glass cloth with a matrix resin) and a region B having the material composition of the attachment portions 2 and 5 A region C including a connection portion that connects the main structure portion and the attachment portion will be described with reference to FIGS. 3 to 5. 3 is a cross-sectional view showing a cross section of the region A which is the main structure portion, FIG. 4 is a cross-sectional view showing a cross section of the region B which is the attachment portion, and FIG. 5 includes a connection portion connecting the main structure portion and the attachment portion. 3 is a cross-sectional view illustrating a cross section of a region C. FIG.

  In FIG. 3, 7 is a matrix resin, 8 is an olefin woven fabric, and 9 is a glass cloth. The main structural parts 1 and 4 are made by integrally forming an olefin woven fabric 8 and a glass woven fabric 9, impregnating the matrix resin 7, and curing through a molding process such as an infusion method. The portion of the olefin woven fabric 8 impregnated with the matrix resin 7 forms the olefin woven fabric-containing region layer 10, and the portion of the glass cloth 9 impregnated with the matrix resin 7 forms the glass cloth-containing region layer 11. However, since it is integrated using one kind of matrix resin 7, the boundary between the olefin woven fabric-containing region layer 10 and the glass cloth-containing region layer 11 is not clear. In FIG. 3, the olefin woven fabric 8 and the glass cloth 9 are described as being provided one by one in each region layer, but the positional relationship of each region layer (the olefin woven fabric-containing region layer on the approximate center line of the member) 10 and a glass cloth-containing region layer 11 between them, and the number of olefin woven fabrics or glass cloths in each region layer may be plural.

  The region B of the attachment portions 2 and 5 shown in FIG. 4 is obtained by laminating and stacking a plurality of glass cloths 9, impregnated with a matrix resin, cured through a molding process, and integrally molded. 11. The thickness of the region A and the thickness of the region B can be different from each other, and the rigidity and strength required for each region, particularly in the region B, the thickness necessary for attaching the structural member to the product, or the structural member It can be set to a thickness required to increase the buckling resistance.

  In the connection part shown in FIG. 5, the olefin woven fabric 8 extending from the main structure part and the glass cloth 9c extending from the attachment part are laminated, and the entire structural member including this connection part is laminated. Can be integrally molded. That is, the olefin woven fabric 8 provided in the main structure portion extends to the connection portion and overlaps the glass cloth 9a extending from the main structure portion to the attachment portion, and further the glass cloth 9b extending from the main structure portion to the attachment portion is overlapped. The glass cloth 9c provided in the attachment portion can be extended to the connection portion and overlapped, impregnated with a matrix resin, and the entire structural member can be cured through a molding step and integrally molded. In FIG. 4, one olefin woven fabric and three glass cloths are described as being continuous in the connection portion, but a plurality of sheets can be used for each, and a configuration in which the sheets are discontinuously overlapped can be used. You can also FIG. 5 shows a configuration in which the olefin woven fabric 8 extending from the main structure portion and the glass cloth extending from the attachment portion are laminated at the connection portion, but the structural strength ( In particular, if the buckling resistance is ensured, the olefin woven fabric 8 and the glass cloth 9c may be extended to the connection portion but not laminated.

  FIG. 6 is a sectional view showing another example of the connecting portion. In this example, the olefin woven fabric 8 provided in the main structure portion is extended to the connecting portion on the glass cloth 9a extending from the main structure portion to the attachment portion. Further, a glass cloth 9c provided at the attachment portion is extended to the connection portion and overlapped, and further a glass cloth 9b extending from the main structure portion to the attachment portion is overlapped. If structural strength (especially buckling resistance) is ensured, the olefin woven fabric 8 and the glass cloth 9 may be extended to the connecting portion and butted together.

  FIG. 7 is a conceptual diagram of a knitting method in the case where an olefin woven fabric and a glass cloth are knitted in a connecting portion. By knitting both fibers in this way, the strength at the time of molding of the connecting portion between the olefin woven fabric-containing region layer 10 and the glass cloth region layer 11 can be increased, and by reducing the interface between the two layers, displacement and strain can be reduced. Can be suppressed. In FIG. 7, different fibers are shown as an example of weaving, but it is also possible to apply between the same type of fibers, and although it is shown as a single fiber, it can be knitted using a bundle of fibers, The knitting method and fiber direction are not limited to this. Here, the number of fibers (woven fabric) to be knitted is not limited to a single layer.

  FIGS. 8 to 10 are conceptual diagrams showing a method of overlaying and a method of stitching at the connecting portion of the olefin woven fabric 8 and the glass cloth 9. Each figure is a figure in which the fibers 12 are used for stitching, but a method in which stitches are not stitched (a method of simply overlapping) is also possible. First, as shown in FIG. 8, there is a method of increasing the bonding strength when impregnating the matrix resin 7 by superimposing both fibers. In addition, as shown in FIG. 9, the change in the thickness of the layer can be suppressed by impregnating the matrix resin 7 in a state where the fibers are butted together. Furthermore, as shown in FIG. 10, the olefin woven fabric and the glass cloth need not be cut at equal intervals, but by alternately sandwiching the olefin woven fabric-containing region layer 10 and the glass cloth at the time of impregnation with the matrix resin 7 The interface of the region layer 11 can be complicated and the strength at the interface of both regions can be increased. The strength between the two fibers can be further increased by sewing using the fibers 12 for these overlapping methods. Although FIG. 8 to FIG. 10 show joining between different kinds of fibers, the present invention can also be applied to a combination method between the same kinds of fibers, and the number of sheets to be superimposed is not limited to one by one. Here, in the case of sewing, it is possible to use either the fiber of the olefin woven fabric 8 or the glass cloth fiber 9, and even a completely different one can be applied as long as it is sufficiently bonded to the matrix resin. Further, the fibers to be sewn are not limited to single fibers but may be a bundle of fibers (for example, a mixture of olefin fibers and glass fibers), and the way of stitching is not limited to the illustrated one.

  The olefin woven fabric 8 used for the main structure is not limited to a specific one, and those known in the technical field can be used. The preferred olefin woven fabric 5 is a woven fabric made of ultrahigh molecular weight polyethylene fibers. If it is this woven fabric, the outstanding tensile strength and elastic modulus can be reflected in the characteristic of the main structure part of a structural member. As the ultrahigh molecular weight polyethylene fiber, for example, a product name “Dyneema” (relative permittivity: 2.2, molecular weight: about 4 million) commercially available from Toyobo Co., Ltd. can be used. FIG. 11 is a list of material properties of an olefin woven fabric (the above “Dyneema”) and a glass cloth (a product name “NE-Glass” commercially available from Nitto Boseki Co., Ltd.). Dyneema is preferably a woven fabric using long fibers because it is highly rigid, can maintain strength in the tensile direction, and is easily impregnated with the matrix resin 7. Furthermore, from the viewpoint of improving the adhesion with the matrix resin 7, a surface treatment such as corona discharge machining may be applied to the surface of the olefin woven fabric 8. For applications where radio waves are transmitted and received through a structural member, the olefin woven fabric 8 is preferably as low as the relative dielectric constant, but is preferably lower than the glass fiber, specifically 4 or less. . When the relative dielectric constant exceeds 4, a desired effect (dielectric constant reducing effect) by using the olefin woven fabric 5 may not be obtained. Also, the olefin woven fabric has a high elastic modulus, and if a thin and highly rigid member is manufactured, the radio wave loss can be reduced.

  The glass cloth 9 used in the present embodiment is not limited to a specific one, and those known in the technical field can be used. Examples of the glass cloth 9 include a cloth using a product name NE-Glass (relative dielectric constant 4.7) manufactured by Nitto Boseki Co., Ltd., which is a low dielectric property glass cloth. Moreover, since glass fiber can generally improve adhesiveness with matrix resin by surface treatments, such as a coupling process, brand name E-Glass, D-Glass, T-Glass, etc. by Nitto Boseki Co., Ltd. Cloths using other glass fibers can also be used.

  As matrix resin 7 used by this Embodiment, it is not limited to a specific thing, A well-known thing can be used in the said technical field. In consideration of manufacturability of the radome 1, the matrix resin 7 is preferably a liquid curable resin that can ensure impregnation in an uncured state. Moreover, what has a functional group which considered the adhesiveness with the olefin woven fabric 5 and the glass cloth 6 after hardening is preferable. Examples of such matrix resin 7 include epoxy resin, vinyl ester resin, unsaturated polyester resin, and silicone resin. The curing agent for the matrix resin 7 is not particularly limited, and those known in the technical field can be used. Examples of such curing agents include organic oxides and acid anhydrides. Moreover, the compounding quantity of a hardening | curing agent is not specifically limited, What is necessary is just to set suitably according to the matrix resin 7 to be used and the kind of hardening | curing agent.

  As described above, the structural member according to Embodiment 1 of the present invention has structural strength by using an olefin woven fabric (or a combination of an olefin woven fabric and a glass cloth) as a fiber reinforced resin fiber in the main structure portion. By using an olefin woven fabric having a low relative dielectric constant, radio wave transmission can be improved. Moreover, since the attachment part connected to the main structure part via the connection part is comprised by the glass cloth containing area | region layer not including an olefin woven fabric containing area | region layer, an intensity | strength characteristic and workability can be improved.

Embodiment 2

  A radome of the antenna device according to Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 12 is an external view of a radome according to Embodiment 2 of the present invention. In FIG. 12, 13 is a radome, and 14 is a pedestal to which the radome 13 is attached. In the radome 13, 15 is a dome portion (the height and the diameter of the bottom surface differ depending on the antenna device), and 16 is an attachment portion provided on the bottom portion of the dome portion 15. A machined hole 17 is provided in the mounting portion after the radome 13 is integrally formed. In the pedestal 14, 18 is a mounting seat for attaching the radome 13, and 19 is a screw hole. The radome 13 is fixed to the base 14 by passing a fixing screw through the machined hole 17 and screwed into the screw hole 19. In addition, 20 shown with a dashed-dotted line is an electromagnetic wave apparatus containing the antenna accommodated in the radome 13. FIG.

  The radome 13 is for protecting the radio wave device 20 from the external environment (for example, natural environment such as wind, sunlight, rain and seawater, impact from the outside, and dust), and between the outside and the antenna. When radio waves are transmitted and received, the radio waves pass through the radome 13. Here, the shape of the radome 13 is arbitrary, but when the radio wave device 20 is movable, it is necessary to prevent the radome 13 and the radio wave device 20 from interfering with each other. The radome 13 is arranged such that the distance from the center of the antenna to the radome 13 is as equal as possible with respect to the radio wave output direction of the antenna, and radio waves are incident on the radome 13 perpendicularly.

  Region A having the material composition of the dome portion 15 (region in which the olefin woven fabric or the laminate of the olefin woven fabric and the glass cloth is impregnated with the matrix resin) and region B having the material composition of the mounting portion 16 (the lamination of the glass cloth) The region impregnated with the matrix resin) is the same as that described with reference to FIGS. 3 and 4 in the first embodiment, and the description thereof is omitted here. A region C including a connection portion that connects the dome portion and the attachment portion will be described with reference to FIG. FIG. 13 is a cross-sectional view illustrating a cross section of a region C including a connection portion that connects the dome portion and the attachment portion of the radome. The region C shown in FIG. 13 has a feature that the attachment portion 16 is bent. For the lamination of the olefin woven fabric and the glass cloth, the impregnation with the matrix resin, and the like, FIG. And as described in the first embodiment. FIG. 14 is a cross-sectional view of another example of the connecting portion in the radome. In this example, the olefin woven fabric 8 provided in the dome portion extends to the connecting portion on the glass cloth 9a extending from the dome portion to the mounting portion. Then, the glass cloth 9c provided at the attachment portion is further extended to the connection portion, and the glass cloth 9b extending from the dome portion to the attachment portion is further overlapped. If structural strength (especially buckling resistance) is ensured, the olefin woven fabric 8 and the glass cloth 9 may be extended to the connecting portion and butted together.

  The method of knitting when the olefin woven fabric and the glass cloth are knitted at the connecting portion is as described in the first embodiment with reference to FIG. Further, the overlapping method and the stitching method at the connection portion between the olefin woven fabric and the glass cloth are as described in the first embodiment with reference to FIGS.

  The radome 13 is divided into a part through which the target radio wave is transmitted (dome part 15) and a part through which the target radio wave is not transmitted (attachment part 16), giving priority to the electrical characteristics at the part through which the target radio wave is transmitted, and mechanical at the part through which the target radio wave is not transmitted. Prioritize characteristics. Therefore, an olefin woven fabric having characteristics of high rigidity and low dielectric constant is used for the dome portion 15 (or used in combination with a glass cloth), and a glass cloth with good machinability is used for the attachment portion 16. Furthermore, from the viewpoint of improving the buckling resistance, the thickness of the mounting portion 16 through which the target radio wave does not pass can be made thicker than that of the dome portion 15.

  As the olefin woven fabric 8 used for the dome part 15, it is not limited to a specific thing, A thing well-known in the said technical field can be used. The relative dielectric constant of the olefin woven fabric 8 is preferably as low as possible, but is preferably lower than that of glass fiber, specifically, 4 or less. When the relative dielectric constant exceeds 4, a desired effect (dielectric constant reducing effect) by using the olefin woven fabric 5 may not be obtained. The olefin woven fabric 8 is preferably a woven fabric using long fibers because it can maintain the strength in the tensile direction and is easily impregnated with the matrix resin 7. Furthermore, from the viewpoint of improving the adhesion with the matrix resin 7, a surface treatment such as corona discharge machining may be applied to the surface of the olefin woven fabric 8. The preferred olefin woven fabric 5 is a woven fabric made of ultrahigh molecular weight polyethylene fibers. With this woven fabric, the excellent tensile strength and elastic modulus can be reflected in the characteristics of the dome portion 15. As the ultrahigh molecular weight polyethylene fiber, for example, a product name “Dyneema” (relative permittivity: 2.2, molecular weight: about 4 million) commercially available from Toyobo Co., Ltd. shown in FIG. 11 can be used.

  The glass cloth 9 used for the attachment portion 16 of the present embodiment is not limited to a specific one, and those known in the technical field can be used. An example of the glass cloth 9 is a cloth using a product name “NE-Glass” (relative dielectric constant 4.7) manufactured by Nitto Boseki Co., Ltd., which is a low dielectric property glass cloth. Moreover, since glass fiber can generally improve adhesiveness with matrix resin by surface treatments, such as a coupling process, product name "E-Glass", "D-Glass" by Nitto Boseki Co., Ltd. and Cloths using other glass fibers such as “T-Glass” can also be used.

  The matrix resin 7 used in the present embodiment is not limited to a specific one, and those known in the technical field can be used. In consideration of manufacturability of the radome 13, the matrix resin 7 is preferably a liquid curable resin that can ensure impregnation in an uncured state. Moreover, what has a functional group which considered the adhesiveness with the olefin woven fabric 5 and the glass cloth 6 after hardening is preferable. Examples of such matrix resin 7 include epoxy resin, vinyl ester resin, unsaturated polyester resin, and silicone resin. The curing agent for the matrix resin 7 is not particularly limited, and those known in the technical field can be used. Examples of such curing agents include organic oxides and acid anhydrides. Moreover, the compounding quantity of a hardening | curing agent is not specifically limited, What is necessary is just to set suitably according to the matrix resin 7 to be used and the kind of hardening | curing agent.

  As described above, the radome of the antenna device according to Embodiment 2 of the present invention uses an olefin woven fabric (or a combination of an olefin woven fabric and a glass cloth) as a fiber reinforced resin fiber in the dome portion. The permeability and the structural strength of can be increased. Although described as a radome in the present invention, the present invention can also be applied to a fidome that requires similar characteristics and can be included in the radome described in the present invention. Moreover, since the attachment part connected to the dome part via the connection part is composed of the glass cloth-containing region layer 9 without including the olefin woven fabric-containing region layer, the strength characteristics and workability can be improved.

It is an external view of the panel-like structural member as a structural member which concerns on Embodiment 1 of this invention. It is an external view of the pipe-shaped structural member as a structural member which concerns on Embodiment 1 of this invention. It is sectional drawing showing the cross section of the area | region A which is a main structure part. It is sectional drawing showing the cross section of the area | region B which is an attaching part. It is sectional drawing showing the cross section of the area | region C containing the connection part which connects a main structure part and an attaching part. It is sectional drawing showing another example of a connection part. It is a conceptual diagram of the method of knitting in the case of weaving an olefin woven fabric and a glass cloth at a connecting portion. It is a conceptual diagram showing the method of the superimposition in the connection part of an olefin woven fabric and a glass cloth, and the method of sewing. It is a conceptual diagram showing another example of the method of superimposing in the connection part of an olefin woven fabric and a glass cloth, and the method of sewing. It is a conceptual diagram showing another example of the method of superimposing in the connection part of an olefin woven fabric and a glass cloth, and the method of sewing. It is a list of material properties of olefin woven fabric and glass cloth. It is an external view of the radome concerning Embodiment 2 of this invention. It is sectional drawing showing the cross section of the area | region C containing the connection part which connects the dome part and attachment part in a radome. It is sectional drawing of another example of the connection part in a radome.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 4 Main structure part 2, 5 Attachment part 7 Matrix resin 8 Olefin woven fabric 9 Glass cloth 13 Radome 15 Dome part 16 Attachment part

Claims (10)

A main structure part in which an olefin woven cloth or a laminate of an olefin woven cloth and a glass cloth is impregnated with a matrix resin, a mounting part in which a glass cloth is impregnated with a matrix resin, a glass cloth extending from the attaching part, A structural member comprising a connection portion laminated with an olefin woven fabric extending from a structural portion and impregnated with a matrix resin. A main structure part in which an olefin woven cloth or a laminate of an olefin woven cloth and a glass cloth is impregnated with a matrix resin, a mounting part in which a glass cloth is impregnated with a matrix resin, a glass cloth extending from the attaching part, A structural member, comprising: a connection portion that is faced with an olefin woven fabric extending from the structural portion and impregnated with a matrix resin. The structural member according to claim 1 or 2, wherein the glass cloth of the connecting portion and the olefin woven fabric are stitched together. A main structure part in which a matrix resin is impregnated in an olefin woven cloth or a laminate of an olefin woven cloth and a glass cloth, a mounting part in which a glass cloth is impregnated with a matrix resin, and fibers of a glass cloth extending from the mounting part, A structural member comprising: a connection portion in which fibers of an olefin woven fabric extending from the main structure portion are knitted and impregnated with a matrix resin. The structural member according to any one of claims 1 to 4, wherein the olefin woven fabric is surface-modified by corona discharge machining. A dome part impregnated with an olefin woven cloth or a laminate of an olefin woven cloth and a glass cloth with a matrix resin, a mounting part with a glass cloth impregnated with a matrix resin, a glass cloth extending from the mounting part, and the dome part A radome comprising a connection portion laminated with an olefin woven fabric extending from the substrate and impregnated with a matrix resin. A dome part impregnated with an olefin woven cloth or a laminate of an olefin woven cloth and a glass cloth with a matrix resin, a mounting part with a glass cloth impregnated with a matrix resin, a glass cloth extending from the mounting part, and the dome part A radome characterized by comprising a connecting portion that is abutted with an olefin woven fabric extending from the outer periphery and impregnated with a matrix resin. The radome according to claim 7, wherein the glass cloth and the olefin woven fabric of the connecting portion are stitched together. A dome part impregnated with an olefin woven cloth or a laminate of an olefin woven cloth and a glass cloth with a matrix resin, an attachment part in which the glass cloth is impregnated with a matrix resin, and fibers of the glass cloth extending from the attachment part, A radome comprising a connection portion in which fibers of an olefin woven fabric extending from a dome portion are knitted and impregnated with a matrix resin. The radome according to any one of claims 6 to 9, wherein the olefin woven fabric is surface-modified by corona discharge machining.

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