JP2019130696A - Panel member - Google Patents

Abstract

To provide a panel member having excellent mechanical strength, capable of adding excellent mechanical strength to a structure, and capable of reinforcing a structure having curved surface as well.SOLUTION: The panel member has a sheet shaped first skin member containing a thermoplastic resin and a fiber, and a wave shaped member integrally arranged to one surface of the first skin member, the wave shaped member has a first connection part integrated to the first skin member and formed with any interval, a both side wall part expanding from both ends in a width direction of the first connection part respectively, and a second connection part connecting facing end edges each other in a wall part extending from first connection part neighboring each other respectively and facing each other, and has a rib body formed by the first connection part, both side wall part and the second connection part, and width dimension of the first connection part a and interval b of first connection parts each other in an arrangement direction of the first connection part b satisfy a≤b≤5a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a panel member.

  Conventionally, panel members have been used to reinforce structures in various fields. As such a panel member, Patent Document 1 discloses a planar panel member that includes an upper layer member that forms an upper surface, a lower layer member that forms a lower surface, and a middle layer member interposed between the upper layer member and the lower layer member. 3 types of members, or a middle layer member that forms the upper surface, and a lower layer member that forms the lower surface are composed of a joining structure of two types of members, the upper layer member and the lower layer member are composed of a surface structure having a flat surface, There is disclosed a panel member made of a concavo-convex press structure in which the intermediate layer member has a structure having a continuous concavo-convex shape formed by press molding a stampable base material made of a planar base material.

JP2015-189092A

  However, the panel member is assumed to be used in a flat plate shape, and has a problem that it cannot be used to reinforce a structure having a curved surface.

  Furthermore, when the intermediate member is made of a fiber reinforced resin, the panel member adopts a form made of a mat mixed with discontinuous cut reinforcing fibers as the reinforcing resin constituting the fiber reinforced resin, There is a problem that the mechanical strength is low.

  The present invention provides a panel member that has excellent mechanical strength, can impart excellent mechanical strength to a structure, and can reinforce a structure having a curved surface.

The panel member of the present invention is
A sheet-like first skin member containing a thermoplastic resin;
A corrugated member integrally provided on one surface of the first skin member;
The corrugated member is adjacent to a first connecting portion integrated with the first skin member and formed at an arbitrary interval, and both side wall portions extending from both ends in the width direction of the first connecting portion. A second connection portion extending from each of the first connection portions and connecting opposite edges of the wall portions facing each other, and the first connection portion, the both side wall portions, and the second connection. Having a rib body formed by the part,
The width dimension a of the second connection part and the interval b between the second connection parts in the arrangement direction of the first connection part satisfy a ≦ b ≦ 5a.

  The panel member of the present invention has excellent mechanical strength, and can be provided with excellent mechanical strength by reinforcing the structure by being integrally disposed on the surface of the structure.

  Since the panel member of the present invention can be bent and deformed by applying heat, it can be easily disposed and integrated on the surface of the structure having a curved surface. Even a structure with many curved surfaces, such as ships, automobiles, railways, and aircraft, can be easily reinforced to improve mechanical strength.

It is sectional drawing which showed the panel member of this invention. It is the perspective view which showed the panel member of this invention. It is the top view which showed the panel member of this invention. It is sectional drawing which showed another example of the panel member of this invention. It is sectional drawing which showed another example of the panel member of this invention. It is sectional drawing which showed another example of the panel member of this invention. It is sectional drawing which showed another example of the panel member of this invention. It is sectional drawing which showed another example of the panel member of this invention. It is sectional drawing which showed an example of the usage type of the panel member of this invention. It is sectional drawing which showed an example of the usage type of the panel member of this invention. It is the perspective view which showed another example of the panel member of this invention.

  An example of the panel member of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the panel member A is a sheet-like first skin member 1 containing a thermoplastic resin and fibers, and is provided integrally on one surface of the first skin member 1 and contains continuous fibers. And a corrugated member 2.

  The first skin member 1 includes a thermoplastic resin, and is configured to be deformable into a shape along the surface of the structure by heating. Although it does not specifically limit as a thermoplastic resin which comprises the 1st skin member 1, Polyolefin resin is preferable.

  Examples of the polyolefin resin include a polyethylene resin and a polypropylene resin. The polyethylene resin is not particularly limited, and examples thereof include a low density polyethylene resin, a medium density polyethylene resin, a high density polyethylene resin, a linear low density polyethylene resin, a linear medium density polyethylene resin, and a direct resin. Examples thereof include a chain high density polyethylene resin.

  The polypropylene resin is not particularly limited, and examples thereof include a propylene homopolymer and a copolymer of propylene and another olefin. The copolymer of propylene and another olefin may be a block copolymer or a random copolymer.

  Examples of the olefin copolymerized with propylene include α such as ethylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-nonene and 1-decene. -Olefin and the like.

  The first skin member 1 may contain fibers. The fibers include short fibers and continuous fibers, and continuous fibers are preferable. Although it does not specifically limit as fiber, Glass fiber and carbon fiber are preferable. A short fiber means a fiber having a fiber length of less than 20 mm. Continuous fiber refers to a fiber having a fiber length of 20 mm or more.

  Examples of the carbon fiber include PAN-based carbon fiber and PITCH-based carbon fiber. As glass fiber, E glass fiber etc. are mentioned, for example.

  The average diameter of the fibers is preferably 3 to 30 μm, more preferably 6 to 27 μm. In the present invention, the fiber diameter refers to the diameter of a perfect circle having the smallest diameter that can surround this cross section in a cut surface cut by a plane parallel to a direction orthogonal to the length direction of the fiber.

  The length direction of the continuous fiber may coincide with the length direction of the rib body 2a of the corrugated member 2 described later, but it is preferable that they intersect. In the present invention, "two directions intersect" means that two straight lines intersect each other when the straight lines directed in the two directions are translated.

  Since the length direction of the continuous fiber and the length direction of the rib body 2a of the corrugated member 2 described later intersect, the corrugated member 2 is heated and the rib is heated without losing the reinforcing strength of the panel member A. The body 2a can be smoothly curved and deformed in the length direction.

  The angle α formed by the length direction of the continuous fiber and the length direction of the rib body 2a of the corrugated member 2 described later is preferably 30 to 60 °. By setting the angle α to 30 to 60 °, the corrugated member 2 can be heated and deformed more smoothly in the length direction of the rib body 2a without impairing the reinforcing strength of the panel member A. In the present invention, “the angle α formed by the length direction of the continuous fiber and the length direction of the rib body 2a of the corrugated member 2 described later” refers to the parallel movement of straight lines directed in the two directions, respectively. The angle between the two straight lines is an acute angle when they intersect each other.

  10-60 mass% is preferable and, as for content of the fiber in a 1st skin member, 40-55 mass% is more preferable. If the fiber content is within the above range, the corrugated member 2 can be heated and curved smoothly in the length direction of the rib body 2a without impairing the reinforcing strength of the panel member A.

  As shown in FIG. 1, a corrugated member 2 is integrally provided on one surface of the first skin member 1. The corrugated member 2 includes a thermoplastic resin and continuous fibers, and is configured to be deformable in accordance with the surface shape of the structure by heating. The thermoplastic resin included in the corrugated member 2 can be the thermoplastic resin exemplified in the thermoplastic resin included in the first skin member 1. The thermoplastic resin contained in the corrugated member 2 and the thermoplastic resin contained in the first skin member 1 may be the same or different.

  The corrugated member 2 is integrated with one surface of the first skin member 1 and formed at an arbitrary interval, and both side wall portions 22a extending from both ends in the width direction of the first connection portion 21, 22b, and a second connection portion 23 extending from each of the first connection portions 21a and 21b adjacent to each other and connecting opposing edges of the wall portions 22b and 22a facing each other.

  A plurality of first connecting portions 21 of the corrugated member 2 are repeatedly formed at an arbitrary interval. The interval between the first connecting portions 21 and 21 may be constant or may vary, and the first connecting portions 21 are arranged in a portion where the reinforcing effect is to be improved in the structure. It is preferable to keep (see FIG. 8).

  The dimension (width dimension) a in the arrangement direction (width direction) of the first connection part 21 in the first connection part 21 may be constant or may vary. The width dimension of the first connection portion is preferably 2 mm or more, more preferably 2 to 30 mm, and particularly preferably 5 to 20 mm.

  The first connecting portion 21 extends in a direction intersecting with the arrangement direction of the first connecting portion 21 and is preferably flat, and further, the first skin member in the direction in which the first connecting portion 21 extends. 1 is preferably formed over the entire length.

  The direction in which the first connection portion 21 extends (extension direction) is preferably a direction orthogonal to the direction in which the plurality of first connection portions 21 are arranged. By being orthogonal, the corrugated member 2 can be heated and deformed smoothly in the length direction of the rib body 2a without impairing the reinforcing strength of the panel member A.

  Both side wall portions 22 (22a) and 22 (22b) are integrally provided over the entire length of each of both end edges in the width direction of the first connecting portion 21. It extends in a direction away from the skin member 1.

  The dimension in the extending direction of the side wall portions 22 and 22 may be constant or may vary, but is preferably constant.

  The cross section of the wall portion 22 on the surface along the arrangement direction of the first connection portion 21 may be linear or curved, and the panel member can be easily formed into a desired shape after heating the panel member. Since it can be deformed, a linear shape is preferred.

  The angle (inner angle) β formed by the side wall portions 22 and 22 and the first connection portion may be constant or may vary. In the structure, it is preferable that the angle formed between the side wall portions 22 and 22 and the first connection portion is small in a portion where the reinforcing effect is desired to be improved.

  The angle β formed by the first connecting portion 21 and the side wall portions 22 and 22 is not particularly limited, but is preferably 30 to 150 °, more preferably 45 to 135 °, and particularly preferably 90 to 120 °. When the angle β is within the above range, the compressive strength and bending strength of the panel member are preferably improved.

  Specifically, FIG. 1, FIG. 4 and FIG. 5 show panels in which the cross section of the wall portion 22 is cut in a plane parallel to the arrangement direction of the first connection portion 21. Specifically, FIG. 4 shows the panel member A in which the angle β formed by the first connection portion 21 and the side wall portions 22 and 22 is 90 °. FIG. 1 shows a panel member A in which an angle β formed by the first connecting portion 21 and the side wall portions 22 and 22 is 120 °. FIG. 5 shows the panel member A in which the angle β formed by the first connecting portion 21 and the side wall portions 22 and 22 is 60 °.

  FIG. 6 shows a panel in which the cross section of the wall portion 22 is cut in a plane parallel to the arrangement direction of the first connection portion 21.

  In the panel member A, as described above, the angle β formed by the first connection portion 21 and the side wall portions 22 and 22 may be an obtuse angle or an acute angle, but in the thickness direction with respect to the panel member A. When the pressing force to compress is applied, the first connecting portion 21 and the side wall portions 22 and 22 are displaced relative to each other so that the pressing force is absorbed more smoothly and the structure is more reliably protected. Therefore, the angle β formed by the first connection portion 21 and the side wall portions 22 and 22 is preferably an obtuse angle.

  Here, in the case of a panel cut in a plane parallel to the arrangement direction of the first connection portion 21 and the wall portion 22 has a straight cross section, the angle β formed by the first connection portion 21 and the wall portion 22 is The inner angle formed by the first connecting portion 21 and the wall portion 22 in a cut surface obtained by cutting the first connecting portion 21 and the wall portion 22 along a plane parallel to the direction in which the first connecting portion 21 is disposed. In addition, when the 1st connection part 21 is not linear form, the inside angle which the straight line which connects the both ends of the 1st connection part 21 and the wall part 22 makes is said.

  Further, in the case of a panel cut in a plane parallel to the arrangement direction of the first connection portion 21 and the wall portion 22 has a curved cross section, an angle β formed by the first connection portion 21 and the side wall portions 22 and 22 is formed. Is a cut surface obtained by cutting the first connection portion 21 and the wall portion 22 along a plane parallel to the arrangement direction of the first connection portion 21, and the base end (the first connection portion 21 and the wall portion 22 ) And the front end of the wall portion 22 (the connection portion between the wall portion 22 and the second connection portion 23) and the inner angle formed by the first connection portion 21. In addition, when the 1st connection part 21 is not linear form, the inside angle which the straight line which connects the both ends of the 1st connection part 21 and the wall part 22 makes is said.

  The opposing end edges 22b1 and 22a1 of the wall portions 22 (22b) and 22 (22a) extending from the opposing end edges of the first connecting portions 21 (21a) and 21 (21b) adjacent to each other are second. The connection unit 23 is connected and integrated. The opposing end edges 22b1 and 22a1 of the wall portions 22 (22b) and 22 (22a) are connected and integrated by the second connecting portion 23 over the entire length of the wall portions 22 and 22 in the length direction.

  The corrugated member 2 has a rib body 2a formed by the first connecting portion 21, the side wall portions 22a and 22b, and the second connecting portion 23 and having a hollow inside over the entire length. The first connecting portion 21 extends in a direction that intersects the direction in which the first connecting portion 21 is disposed. The rib body 2a preferably extends in a direction orthogonal to the direction in which the first connection portion 21 is disposed.

  As described above, the corrugated member 2 is formed in a state in which a plurality of rib bodies 2a are arranged in parallel with each other at an arbitrary interval. It has excellent mechanical strength and also has excellent resistance to compressive stress in the thickness direction.

A dimension (width dimension) a in the arrangement direction (width direction) of the first connection part 21 in the second connection part 23 and a distance b between the second connection parts 23 and 23 in the arrangement direction of the first connection part 21. (In the arrangement direction of the first connection portions 23, the interval b between the second connection portions adjacent to each other) satisfies the following formula (I).
a ≦ b ≦ 5a Formula (I)

  Note that the interval b between the second connection portions in the arrangement direction of the first connection portions 21 means two second connection portions adjacent to each other in the arrangement direction of the first connection portions 21. This is the shortest interval among the intervals between the edges of the connecting portion facing each other.

  As will be described later, the panel member A is used by being deformed into a shape along the curved surface of the structure to be reinforced as necessary. For example, when the panel member A is deformed into a curved state so that the first skin member 1 is on the outside, the second connecting portion 23 side of the panel member A needs to contract in the arrangement direction of the first connecting portion 21. is there.

  In the panel member A, the gap W between the second connection portions 23 and 23 has a higher degree of freedom of deformation than the second connection portion 23. Therefore, the panel member A has a high degree of freedom of deformation, and the gap W between the second connection portions 23, 23, in other words, the interval b between the second connection portions 23, 23 satisfies the above formula (I). As described above, the second connecting portion 23 is configured to be larger than the width dimension a. With this configuration, when the panel member A is heated and deformed so that the first skin member 1 faces outward, the gap W between the second connection portions 23 and 23 is smoothly set to the first. The contraction can be absorbed by smoothly contracting in the arrangement direction of the connection portion 21, and the panel member A can be easily bent and deformed in the arrangement direction of the first connection portion 21 of the corrugated member 2. It is configured to be able to.

  The panel member A may be integrally provided with a sheet-like second skin member 3 on the corrugated member 2 as will be described later. In the panel member A configured as described above, the second skin member 3 is integrated on the second connection portion 23, while the second skin member is formed in the gap W between the second connection portions 23 and 23. 3 is only integrated. Accordingly, also in the panel member A configured in this way, the gap W between the second connection portions 23 and 23 has a higher degree of freedom of deformation than the second connection portion 23, and as described above, the formula (I ), When the panel member A is heated and deformed into a curved state so that the first skin member 1 is on the outer side, the gap W between the second connection portions 23 and 23 is smoothly set to the first. The contraction can be absorbed by smoothly contracting in the arrangement direction of the connection portion 21, and the panel member A can be easily bent and deformed in the arrangement direction of the first connection portion 21 of the corrugated member 2. It is configured to be able to.

  The dimension (width dimension) a of the second connection part 23 in the arrangement direction (width direction) of the first connection part 21 and the distance b between the second connection parts 23 and 23 in the arrangement direction of the first connection part 21 are as follows. When the relationship of a ≦ b is satisfied, when the panel member A is heated and deformed so that the first skin member 1 is on the outside, the unconnected portion 12 of the first skin member 1 is smoothly bent. Accordingly, the contraction can be absorbed, and the panel member A can be easily bent and deformed in the arrangement direction of the first connecting portion 21 of the corrugated member 2.

  The dimension (width dimension) a of the second connection part 23 in the arrangement direction (width direction) of the first connection part 21 and the distance b between the second connection parts 23 and 23 in the arrangement direction of the first connection part 21 are as follows. When the relationship of b ≦ 5a is satisfied, the number of rib bodies 2a in the arrangement direction of the first connection portion 21 can be made sufficient, the panel member has excellent mechanical strength, and the structure is reinforced. It is possible to impart excellent mechanical strength to the structure.

  As shown in FIG. 11, the rib body 2a of the corrugated member 2 may have recesses 2a1 formed at regular intervals or at arbitrary intervals in the length direction. The recess 2a1 of the rib body 2a is formed over the entire length of the second connecting portion 23 in the width direction. By forming the concave portion 2a1 in the rib body 2a in this way, the weak body portion caused by the concave portion 2a1 can be expressed in the rib body 2a during the heat treatment for deforming the panel member A. The rib member 2a of the corrugated member 2 can be easily deformed to be bent in the length direction.

  And the corrugated member 2 may contain the continuous fiber. As a continuous fiber, the continuous fiber similar to the continuous fiber used in a 1st skin member can be used. Since the specific description of the continuous fiber is the same as described above, the description thereof is omitted. The continuous fibers contained in the first skin member 1 and the continuous fibers contained in the corrugated member 2 may be the same or different. In FIGS. 2 and 3, continuous fibers are illustrated for easy understanding, but the continuous fibers may not be visible in appearance.

  The length direction of the continuous fibers contained in the corrugated member 2 may coincide with the length direction of the rib body 2a of the corrugated member 2, but it is preferable that they intersect.

  Since the length direction of the continuous fiber and the length direction of the rib body 2a of the corrugated member 2 described later intersect, the corrugated member 2 is heated and the rib is heated without losing the reinforcing strength of the panel member A. The body 2a can be smoothly curved and deformed in the length direction.

  The angle γ formed by the length direction of the continuous fibers contained in the corrugated member 2 and the length direction of the rib body 2a of the corrugated member 2 is preferably 30 to 60 °. By setting the angle γ to 30 to 60 °, the corrugated member 2 can be heated and deformed more smoothly in the length direction of the rib body 2a without impairing the reinforcing strength of the panel member A.

  The continuous fiber 2b contained in the corrugated member 2 preferably includes a continuous fiber 2b1 extending in any one direction and a continuous fiber 2b2 extending in a direction intersecting the continuous fiber 2b1. Thus, by containing continuous fibers extending in two directions, the panel member A can effectively resist the deformation stress from various directions, and has excellent mechanical strength for the structural member. Can be granted.

  The angle formed by the length direction of the continuous fiber 2b1 and the length direction of the continuous fiber 2b2 is preferably 20 to 70 °, more preferably 30 to 60 °, and particularly preferably 40 to 50 °. If the angle formed by the length direction of the continuous fiber 2b1 and the length direction of the continuous fiber 2b2 is within the above range, the rib member 2a is obtained after the corrugated member 2 is heated without impairing the reinforcing strength of the panel member A. Can be smoothly curved and deformed in the length direction, and can effectively resist deformation stress from various directions, and can impart excellent mechanical strength to the structural member.

  10-60 mass% is preferable and, as for content of the continuous fiber in the corrugated member 2, 40-55 mass% is more preferable. When the content of the continuous fiber is within the above range, the corrugated member 2 can be heated and deformed smoothly in the length direction of the rib body 2a without impairing the reinforcing strength of the panel member A.

  As shown in FIG. 7, in the panel member A, the sheet-like second skin member 3 may be integrally provided on the corrugated member 2. Since the second skin member 3 has the same configuration as the first skin member, the description thereof is omitted. The first skin member 1 and the second skin member 3 may be the same or different. 7 shows the case where the second skin member 3 is provided integrally with the panel member A of FIG. 1, a panel member A other than the panel member A shown in FIG. 1 may be used.

  The second skin member 3 is joined and integrated with each of the second connection portions 23 of the corrugated member 2. When the panel member A has the second skin member 3, a sandwich structure in which the first skin member 1 and the second skin member 3 are integrated via the corrugated member 2 is obtained.

  Since panel member A has a sandwich structure, it has excellent mechanical strength, has excellent resistance to stress from all directions, and gives excellent mechanical strength to the structure. can do.

A dimension (width dimension) c in the arrangement direction (width direction) of the first connection part 21 in the first connection part 21 and a distance d between the first connection parts 21 and 21 in the arrangement direction of the first connection part 23. (In the arrangement direction of the first connection portion 21, the distance b between the second connection portions adjacent to each other) preferably satisfies the following formula (II).
c ≦ d ≦ 5c Formula (II)

  The first skin member 1 is integrated on the first connection portion 21, while the first skin member 1 is only integrated in the gap Z between the first connection portions 21 and 21. Accordingly, the gap Z between the first connection portions 21 and 21 has a higher degree of freedom of deformation than the first connection portion 21 and, as described above, satisfies the formula (II), thereby heating the panel member A. When the first skin member 1 is deformed so as to be curved outward, the gap Z between the second connection portions 21 and 21 smoothly extends in the direction in which the first connection portion 21 is disposed. The panel member A can be easily bent and deformed in the direction in which the first connection portion 21 of the corrugated member 2 is disposed.

  The panel member A is fully or partially heated until it becomes deformable, and then deformed to a state that matches the surface shape of the structure, and then cooled, so that the panel member A follows the surface shape of the structure. The shape can be changed. The panel member A may be used without being deformed.

  When the panel member A is deformed into a shape that conforms to the surface shape of the structure, the panel member A may be deformed so as to bend in the direction in which the first connection portion 21 is disposed, as shown in FIG. As shown in FIG. 10, the panel member A may be deformed so as to be bent in the length direction of the rib body 2a.

  In the panel member A, the width dimension a of the second connection portion and the interval b between the second connection portions in the arrangement direction of the first connection portion satisfy a ≦ b ≦ 5a. 1 Even when the skin member 1 is deformed to be curved so as to be on the outside, the panel member A is easily curved while suppressing the resistance caused by the fiber without impairing the reinforcing effect by the fiber. It can be easily deformed along the surface shape.

  Then, as shown in FIGS. 9 and 10, the panel member A deformed into a shape conforming to the surface shape of the structure is integrated with the surface of the structure B using a general-purpose means such as an adhesive. Thus, the structure can be reinforced and excellent mechanical strength can be imparted to the structure. In addition, although the panel member A shown in FIG.9 and FIG.10 showed the case where it has the 2nd skin member 3, it is not limited to this.

  The structure is not particularly limited as long as the panel member A can be integrated with the surface to give strength, and for example, a transport device such as a ship, an automobile, or an aircraft, a building structure, etc. Is mentioned. In particular, many of the members constituting the transportation device have a curved surface, and the member having such a curved surface can be easily and reliably reinforced.

1 First skin member
11 Connection part
12 Unconnected part
2a Rib body
2a1 recess
2b, 2b1, 2b2 Continuous fiber 2 Corrugated member 3 Second skin member
31 Connection part
32 Unconnected part
21 Connection
22, 22a, 22b Wall
23 Second connection part A Panel member

Claims (2)

A sheet-like first skin member containing a thermoplastic resin;
A corrugated member integrally provided on one surface of the first skin member;
The corrugated member is adjacent to a first connecting portion integrated with the first skin member and formed at an arbitrary interval, and both side wall portions extending from both ends in the width direction of the first connecting portion. A second connection portion extending from each of the first connection portions and connecting opposite edges of the wall portions facing each other, and the first connection portion, the both side wall portions, and the second connection. Having a rib body formed by the part,
The panel member, wherein a width dimension a of the second connection portion and a distance b between the second connection portions in the arrangement direction of the first connection portion satisfy a ≦ b ≦ 5a.   2. The panel member according to claim 1, wherein a sheet-like second skin member is integrally provided on the corrugated member, and the second skin member includes a thermoplastic resin and a fiber.

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