JPS62201235A - Three-dimensional structural material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is applicable to three-dimensional structural materials having at least two plane components, particularly interior materials for vehicles such as aircraft, furniture materials, construction materials, and other industries. The present invention relates to three-dimensional structural materials that are widely used as various composite structural materials.

[Prior art and its problems] Interior materials for vehicles such as aircraft, materials for furniture, materials for construction, and various other industrial structural materials must be made as light as possible, rigid, and
It is important that the structural material maintains sufficient strength, and for this reason, this structural material is not formed into a simple flat or curved plate shape, but a three-dimensional structure that has multiple planar components that are continuous by intersecting each other. For example, molding into a three-dimensional structure, such as a substantially T-shaped, Y-shaped, single-shaped, or H-shaped cross section, is performed.

Conventionally, this type of structural material has been made of fiber-reinforced plastic molded bodies, so-called reinforced plastics (FRP).
) was widely used, but when it is formed into a three-dimensional structure with multiple planar components as described above, its strength and durability, especially at the joints between the planar components, have been widely used. It has problems in terms of flexibility, and is prone to warping and distortion, and also buckling and deforming when loaded.
There was a high risk of peeling, and sufficient strength could not be obtained.

In particular, structural materials used for interior materials of aircraft and other vehicles must have the above-mentioned three-dimensional structure that is strong against bending, is lightweight in use, and can sufficiently withstand continuous vibrations and shocks. However, it is not possible to meet this demand by using only the above-mentioned plastic materials.

Therefore, in recent years, attempts have been made to use woven fabric as a reinforcing core material, impregnate it with synthetic resin, mold and solidify it, and form it into a three-dimensional three-dimensional structure with a roughly T-shaped or single-shaped cross section. Various proposals have been made as reinforcing core materials for this purpose.

For example, in JP-A-57-176232@publication,
A layered product is constructed by alternately stacking a large number of fiber groups in a first direction constituting a warp layer and a fiber group in a second direction constituting a weft layer, without weaving, and a connecting yarn that penetrates the layered product in the thickness direction. The warp layer and the weft layer are bound together to form a layered structure divided into two at both ends in the longitudinal direction by the third IllH group, and this fabric is used as a reinforcing core material. The H-shaped structure is formed by impregnating the resin with resin, molding it, opening the bifurcated shape, and solidifying it. However, although this produces a structural material with a large thickness in each planar component, since the warp and weft layers are not intertwined with each other, the bond between the two yarn layers is relatively weak, especially at the side edges of the fabric. Since the weft threads arranged in the width direction are broken, there is a risk that the warp threads may become frayed before the resin is impregnated and solidified, and the binding property with the impregnated resin is also poor.
Furthermore, sufficient mechanical strength such as earthquake resistance and impact resistance cannot be obtained.

Also, as seen in Japanese Patent Application Laid-Open No. 57-133241,
There are fabrics in which the warp and weft intersect each other, and one or both ends in the width direction are woven into a double layer of fabric, but this is simply due to the intersection of the threads in the two warp and UI directions. In addition, since the weft threads arranged in the width direction are cut at the side edges of the fabric, there is a risk that the warp threads at the side edges may become frayed during handling until resin impregnation and solidification. However, sufficient mechanical strength such as earthquake resistance and impact resistance cannot be obtained.

The present invention has been made in view of the above, and aims to be lightweight, rigid, and strong against tensile or repeated loads, and in particular, to prevent the base fabric used as a reinforcing core material from fraying. This is a three-dimensional structural material that has excellent binding properties with solidified resin, has excellent earthquake resistance and impact resistance, and can be widely used as interior materials for aircraft and other vehicles, as well as various composite structural materials for industrial use. It's there to provide.

"Means for Solving the Problems" The present invention, which solves the above problems, has a plurality of planar components, and a reinforcing base fabric serving as a core material is impregnated with a shape-retaining material such as synthetic resin or ceramics. The reinforcing base fabric is spread out into a predetermined three-dimensional structure and then impregnated with a shape-retaining material or coated with a shape-retaining material and solidified. The reinforcing base fabric is an original structural material, and the reinforcing base fabric is formed by integrally constructing fabric portions on multiple sides using a plurality of groups of yarns that move in the same way for each group, and at least one group of yarns is arranged in the fabric portion. Straight sections in the width direction and/or diagonal direction and folded sections at the side edges and boundaries of the fabric part are arranged continuously in the length direction, or loops are continuously formed using this one group of threads. The threads are arranged continuously in the length direction, and the threads belonging to this group are entwined with each other, and/or the threads of this group are intertwined with the threads of other groups arranged continuously in the length direction. , these groups of threads are interconnected and are constructed of threads arranged continuously in the length direction.

[Function] According to such a three-dimensional structure material of the present invention, the reinforcing base fabric consisting of a plurality of fabric parts has each prefecture at the side edges in the width direction, that is, at the edges of the fabric, as described above. It forms a structure in which the threads are continuously intertwined with each other without producing yarn ends.

Therefore, there is no fear that fraying will occur at the side edges until the reinforcing base fabric is impregnated or coated with a shape-retaining material such as a synthetic resin, molded, and solidified. In addition, since the prefectures are intricately intertwined in each fabric part, there is no fear that the holes in the fabric will open easily. This makes the base fabric itself strong against tension and excellent in shape retention. In addition, the shape-retaining material such as synthetic resin penetrates into the pores of the fabric part formed by the threads of the reinforcing base fabric, which is the core material, and hardens in response to the irregularities on the surface of the base fabric, thereby forming the base fabric and the shape-retaining material. The binding force with will be increased. This, combined with the rigidity of the shape retaining material, the toughness of the reinforcing base fabric, and its three-dimensional structure, makes it lightweight and rigid, and extremely resistant to tension and bending, as well as resistant to repeated loads, vibrations, and It is strong against impact, and can have the necessary and sufficient strength without increasing the thickness. In particular, although a plurality of planar components intersect with each other to form a continuous form, the reinforcing base fabric also has each fabric part integrally constructed in accordance with the form, so that the planar components overlap each other. The strength of the continuous part is high, and it is difficult to warp or distort. Also, it does not buckle, peel, deform, or break when a load is applied, and has good earthquake resistance and impact resistance, and is excellent in durability.

[Example] Next, embodiments of the present invention will be described based on the drawings.

In Figure 1, the two planar components (1aH1b) have a cross section of approximately T.
It shows a three-dimensional structural member (1) that is integrally constructed to form a letter shape. This three-dimensional structure material (1) has a reinforcing base fabric (2) as a core material, which has a mainly elongated three-dimensional structure in which a plurality of fabric parts (2a) and (2b) are integrally connected. For this reinforcing base fabric (2), a shape-retaining material (3) such as a synthetic resin is partially impregnated into the base fabric or coated by coating means, etc., to wrap the outer layer of each fabric part in a layered manner. Leave it covered,
Either this is molded into a predetermined three-dimensional structure using a mold and solidified, or the reinforcing base fabric (2) is expanded into a predetermined three-dimensional structure and impregnated with the shape retaining material (3), or It is made by coating, molding, and solidifying.

The shape-retaining material (3) is a material that solidifies when molded after impregnation or application, such as thermosetting resins such as ebogishi, polyester, phenol, vinyl ester, silicone, and acrylic, or polyamide, polyolefin, polycarbonate, ABS, A material made of thermoplastic resin or other synthetic resin such as polybutylene terephthalate, or ceramics such as alumina or zirconia is used. In order to further increase the bonding strength between the shape retaining material (3) made of these materials and the reinforcing base fabric (2), the base fabric (2)
) and the shape retaining material (3), an adhesive may be interposed as necessary.

The shape-retaining material (3) may be a composite material made by arbitrarily combining two or more of the above-mentioned materials, or may have a laminated structure of multiple layers each made of each material.

The reinforcing base fabric (2) may be made of threads made of ordinary fiber materials, or more preferably made of glass MAm, carbon fiber, or aramid I.
It can be constructed using threads of so-called reinforcing fiber materials, such as IM and reinforced plastic fibers, which have little elongation and are strong against tension. Note that the term "yarn" as used in the present invention includes monofilament yarns made of synthetic resin, yarns made by twisting a plurality of thin yarns, and filamentous materials formed from fibers.

The reinforcing base fabric (2) used in the present invention is
Fabric part (2a) (2
b), and in particular, as detailed below,
For example, it can be manufactured using a braid such as torsion lace or other braiding means.

Figure 2 shows reinforcing base fabric (2) constructed by braiding means.
FIG. 2 is a partially enlarged view showing one basic organization example. In the figure, (4) and (5) are diagonal braided threads, (
6) indicates a braided yarn in the longitudinal direction (or weft direction),
Braided yarns (4) and (5) of each of these groups and braided yarn (
6) are intertwined from three directions at a crossing angle of 60°, with each pair consisting of two wires.

In Figure 3, which shows the T-shaped reinforcing base fabric (2), three groups of braided yarns (4) move in the same way for each group.
) (5) (6), the braided thread (4) is a diagonally straight part (
4°), the side edge of the fabric part (8), and the boundary part (7) between the fabric parts (2aH2b) T-(7) bent part (4'') =
13-, the braided threads (5) are arranged in a zigzag manner in the longitudinal direction, and the braided threads (5) are arranged in a diagonal straight part (5).
°) and the fabric part side edge (8) and the folded part (5'') at the boundary (7), the fabric part (2a) and the fabric part (2
b) (7) The other halves (2b'') are assembled one after the other and arranged so as to be continuous in the length direction, and these threads (4) (5
) are intertwined with the braided yarns (6) arranged linearly in the length direction in each fabric portion (2a) (2b). In FIG. 3, the two braided threads (5) (5) are shown shifted by 1/2 pitch in the length direction. Other threads of each group (not shown) are also incorporated in the same manner, thereby forming a reinforcing base fabric (2) having a three-dimensional structure with a substantially T-shaped cross section. The boundary part (7) between the fabric part (2a) and the fabric part (2b) is formed by intertwining each braided yarn including the intertwined part (A) of the braided yarns (4) and (5), and both fabric parts (2a) and (2b) are completely combined to form an integral structure. The reinforcing base fabric (2) with this structure is used as a core material, and it is impregnated with the shape-retaining material (3) by an appropriate means or coated with a coating means, etc., to form a predetermined three-dimensional shape. By molding and solidifying in a structured state, or by impregnating or covering the reinforcing base fabric (2) with shape retention 41 (3) while expanding it into a predetermined three-dimensional structure, and molding and solidifying, A three-dimensional structural material (1) of the present invention is obtained.

In the case of the above embodiment, the diagonal linear portion (II')
(5') with braided threads (4) (5) in each fabric part (2a
) (2b) is bent at the side end (selvage) and continuous in the length direction, so it takes a long time to be impregnated with the shape retaining material (3), molded and solidified, as in the case of textiles. No fraying,
In addition, since the braided thread (6) is arranged linearly in the length direction of the base fabric (2) in contrast to the above-mentioned braided threads (4) and (5), the reinforcing base serving as the core material is Since the fabric (2) itself does not stretch in the longitudinal direction, the strength against tension in the longitudinal direction is further increased.

Further, in FIG. 4 showing another braided state of the reinforcing base fabric (2), the braided threads (4), (5), and (6) of each group are arranged in straight portions (4°) in the diagonal direction and the width direction, respectively. )(5')(6
') and these straight parts (4°) and the bent parts (4'') at each fabric part side Dil (8) and border part (7)
(5″) By continuation with (6″), each fabric part (2a
) (2b) and arranged so as to be continuous in the length direction, and the reinforcing base fabric (2) is constituted by such intertwining of threads. In this way, when at least 61 groups of threads form a braided structure having straight portions in the width direction, the braided structure becomes even stronger against tension in the width direction.

In the above embodiments, the three-dimensional structure material (1) of the present invention has a substantially T-shaped cross section, but as shown in FIG. With part (7) as the center of bending, the two sides of the flat fabric parts (2a) (2a) form a 7-shape shape, each forming a 60' angle with respect to the extension line of the other fabric part (2b). The reinforcing base fabric (2) is impregnated with or coated with the shape retention material (3) and then molded and solidified. Then, by expanding it into a 7-shape, forming it, and solidifying it, it is also possible to form a three-dimensional structural material (1) having a substantially Y-shaped cross section and having three planar constituent parts (1aH1aH1b).

Braiding of the reinforcing base fabric (2) having the above-mentioned three-dimensional structure can be carried out using, for example, a torsion lace machine as disclosed in Japanese Patent Application No. 58-20760 (Japanese Patent Application Laid-open No. 150150-1981) filed by Ganto Toyama.
In other words, it can be carried out using a torsion lace machine having two rows of tracks for moving bobbins wound with braided yarn. The braided state will be explained with reference to FIG. 6, which is a plan view schematically showing the braiding mechanism of the same machine. (10) is the upper orbit, and (11) is the lower orbit, and both are in a vertical relationship in the direction orthogonal to the plane of the paper. An arbitrary number of bobbins (12) are erected on each track (10) and (11) so as to be movable along the track, and a braided thread (13) is pulled out from each bobbin (12). The braided part in the center of the machine (14
) to form a fabric (2°) which has a cross-sectional structure consisting of a single part and a double part as shown in Fig. 7 and can be formed into a substantially T-shaped cross section or a substantially Y-shaped cross section. A reinforcing base fabric (2) that forms a desired three-dimensional structure as shown in FIG. 3 or 4 by appropriately expanding the double portions.
is obtained. As mentioned above, this reinforcing base fabric (2) consists of two sides, the fabric part (2a) and the fabric part (2b), and the sixth
At least one group of yarns among each of the braided yarns (13) in the figure is connected to a straight portion in the width direction and/or diagonal direction in both fabric portions (2a) (2b) and a fabric portion side edge (
8) and the folded part at the boundary (7) to be incorporated sequentially into both fabric parts (2a) and (2b), or to intertwine with the threads of other fabric parts near the boundary (7). The fibers are incorporated so as to intertwine and bond with each other, and are continuously braided in the length direction. The movement of the bobbin (12) on the track (10) forms the fabric part (2a), and the movement of the bobbin (12) on the track (11) forms the fabric part (2b). 15), the bobbin (12) passes through the fabric part (2a)
and the fabric portion (2b) are joined to form a boundary portion (7). Therefore, the base fabric of the three-dimensional structure obtained in this way (2)
Alternatively, the reinforcing base fabric (2) may be impregnated with or coated with a shape-retaining material (3) such as the above-mentioned synthetic resin, and then molded and solidified to form a predetermined three-dimensional structure. By impregnating or covering the shape retaining material (3) with the predetermined three-dimensional structure and solidifying it,
A three-dimensional structural material (1) having a plurality of planar structural parts (la) and (lb) as shown in the figure is obtained.

Figure 8 shows three planar components (la), (1b), and (1c).
The three-dimensional structural material (1) according to the present invention is shown. The reinforcing base fabric (2), which is the core material, is made using the same torsion lace knitting machine as above, using parts (17) and (18) of the lower track (11) surrounded by the dashed line in Fig. 6. , No. 9
As shown in the figure, it is braided into a fabric (2") having a single layer in the center in the width direction and double layers on both sides.
By expanding the double portion of ") to form a fabric part on the same plane, a T-shaped cross section consisting of three fabric parts (2a), (2b), and (2c) as shown in Figures 10 and 11 is obtained. It is formed.

The reinforcing base fabric (2) shown in FIG.
) (4) is the half part (2b') of the fabric part (2b) (2c)
(2c'), each diagonally straight line part (4
'H4') and the folded part (4'') at the side edge (8) and boundary part (7) of the fabric part (4'') are continuously incorporated, and the braided thread (5) is a straight line in the diagonal direction. shaped part (5°
) and the folded part (5'') at the side edge (8) and boundary part (7) of the fabric part (2b) (2c) and the fabric. The threads (4), (4), and (5) are successively incorporated into the fabric parts (2a), (211, and In 2c), the braided yarns (6) arranged linearly in the length direction are intertwined with each other, and the yarns (not shown) in each group are also braided in the same manner as described above, so that the cross section is approximately one dimensional. It is constructed to form a three-dimensional structure. In addition, in Figure 10, the fabric part (2a)
The illustration of the straight braided thread (6) in is omitted.

The boundary portion (7) of each of the fabric portions (2a) (2bH2c) is connected by interlacing the braided threads (4) and (5). In this case, it becomes more resistant to tension in the longitudinal direction.

Further, the reinforcing base fabric (2) shown in FIG.
H2b) Among the braided yarns (4), (5), and (6) intertwined from three directions in (2c), at least one group of yarns (6) intertwine in the diagonal direction and the width direction in each fabric portion (2a) (2bH2c). It has a straight part (6°), and this straight part (6°), the side edge (8) of each fabric part and the boundary part (7)
By connecting with the bent part (G”) at
a), (2b), and (2c) in order, and each prefecture is made continuous in the length direction to form a braided structure. In this way, when at least one group of yarns is in a braided state having a straight portion in the width direction, it becomes even stronger against tension in the width direction.

Then, the reinforcing base fabric (2) of these three-dimensional structures is impregnated with a shape-retaining material (3) made of a material such as a synthetic resin, or coated with a coating means, etc., to form a predetermined three-dimensional structure. Either the reinforcing base fabric (2) is expanded into a predetermined three-dimensional structure and then formed into a shape retaining material (3).
By impregnating or coating and solidifying the 8th
A three-dimensional structural material (1) as shown in the figure is obtained. In the structural material (1) thus obtained, the reinforcing base fabric (2) is composed only of threads continuous in the length direction, that is, the threads are bent and continuous at each side edge of the fabric part. This prevents the base fabric itself from fraying before the shape-retaining material hardens.

The reinforcing base fabric (2) connects the joining points of the fabric parts with the connecting track (1).
5), it is also possible to create a three-dimensional structured fabric that can be expanded into a shape as shown in FIG. 12. In this case, the upper track (10) moves the fabric part (2a), and the lower track (11) moves the fabric part (2b) and the fabric part (2).
c) is formed, and by expanding the double portion of this fabric, a reinforcing base fabric (2) which can have a three-dimensional structure such as a cross-shaped cross section or an X-shaped cross section is constructed. This reinforcing base fabric (2
) also in the case above, this base fabric (2)
The reinforcing base fabric (2) is impregnated with a shape-retaining material (3) such as a synthetic resin or coated with a coating means, and then molded into the predetermined three-dimensional structure and solidified. A three-dimensional structural material (1) as shown in FIG. 12 is obtained by impregnating or covering the shape retaining material (3) and solidifying the expanded three-dimensional structure.

The reinforcing base fabric (2) is not limited to being constructed by the braiding means as described above, but may also be constructed using only threads arranged continuously in the length direction by other means such as warp knitting. For example, as shown in FIG.
(22c) 1. : Loop that becomes the ite stitch (24°)
The stitch yarns (24) are arranged so as to be continuous in the length direction while being continuously formed. Insert threads (2
6) to form a warp-knitted fabric having two or more fabric portions (22a) and fabric portions (22b) (22c), and this warp-knitted fabric is used as the reinforcing base fabric (2). be able to. (25) indicates a connecting portion between threads (24) that serve as a boundary between each fabric portion. When such a warp-knitted fabric is used as the reinforcing base fabric (2), as shown in FIG. 14, in addition to the stitch yarn (24) and the insertion yarn (26), It is possible to insert a weft (27) that is straight in a direction perpendicular to the stitch rows and/or a warp (28) that is straight in the length direction (knitting direction) between the stitch rows. Tensile strength is improved.

This fabric is usually knitted using a so-called double lash I machine that has double rows of needles, and when configuring the fabric as shown in Figure 13 or 14, both ends or A portion of the required width at one end is double knitted using the front and rear needle rows, and the other portion is knitted continuously in a single layer using the front and rear needle rows. By appropriately expanding the double portion knitted in this way, it is possible to construct a base fabric (2) having a three-dimensional structure having a substantially square cross section and a substantially Y or T shape in cross section.

Then, the reinforcing base fabric (2) obtained in this way is impregnated with a shape-retaining material (3) such as a synthetic resin, or is coated with a coating means, and then formed into a predetermined three-dimensional structure and solidified. , or by impregnating or covering the reinforcing base fabric (2) with the shape retaining material (3) and solidifying it in a predetermined three-dimensional structure.
A three-dimensional structural material similar to that shown in FIGS. 1 and 11 can be obtained. Also in this case, since both the threads constituting the reinforcing base fabric (2), that is, the threads (24) forming the stitch loops and the threads (26) inserted therein, are continuous in the length direction, Unlike woven fabrics in which the warp and weft simply intersect, the fabric does not easily fray and has excellent integrity of the base fabric itself, increasing its bonding strength with the shape-retaining material.

Furthermore, the present invention provides a plurality of the above-described reinforcing base fabrics (2),
For example, as shown in Fig. 15 or 16, one side of the fabric is placed in contact with each other as a core material, the outer periphery of which is impregnated or coated with a shape-retaining material (3) such as synthetic resin, and molded. It can also be carried out after solidification. It is also possible to implement other three-dimensional structures (not shown).

[Effects of the Invention] As described above, in the three-dimensional structural material of the present invention, the reinforcing base fabric consisting of a plurality of fabric portions has each prefecture at the side edges in the width direction, that is, at the edges of the fabric. By creating a structure in which yarns are continuously intertwined without creating yarn ends, there is no possibility of fraying at the side edges or the fabric's grain is easily opened excessively, and the base fabric itself is able to resist tension. It is strong and has excellent shape retention, and this, combined with the binding strength with shape retention materials such as synthetic resins, the rigidity of the shape retention material, the toughness of the reinforcing base fabric, and its three-dimensional structure, makes it lightweight. In addition to being rigid, it is extremely resistant to tension and bending. Therefore, it has sufficient strength against repeated loads, vibrations, and shocks.
In addition, the strength of the continuous part between planar components is high, and there is no warping, distortion, deformation, or damage, and it has excellent earthquake resistance and impact resistance, especially for aircraft interiors that require earthquake resistance and impact resistance. It can be widely and extremely suitably used as a variety of composite structural materials for materials, construction materials, and other industries. Moreover, by combining a plurality of these structural materials, or by combining this structural material with other rigid materials, it becomes possible to use it in locations where even greater strength is required.

Furthermore, since the reinforcing base fabric used for the core material in the present invention is constructed by arranging each prefecture continuously in the length direction of the base fabric, it is possible to obtain a continuous reinforcing base fabric in a long length. Using this, a long three-dimensional structural material can be manufactured. In particular, if the reinforcing base fabric is manufactured by knitting such as torsion lace or warp knitting, it is easier to manufacture, and it can be formed into various shapes depending on the purpose, such as approximately T-shaped cross sections, single-shaped cross sections, etc. A three-dimensional structure can be easily manufactured.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of the three-dimensional structural material of the present invention; FIG. 2 is a partially enlarged view showing an example of the structure when the reinforcing base fabric is constructed by braiding means; Figure 3 is a perspective view illustrating how some threads extend in a reinforcing base fabric by braiding means, -27= Figure 4 shows how some threads extend in another reinforcing base fabric by braiding means. 5 is a cross-sectional view showing another embodiment of the three-dimensional structural material of the present invention, and FIG. 6 is a braiding of a torsion lace knitting machine for braiding a reinforcing base fabric. A schematic plan view of the mechanism, FIG. 7 is a sectional view of the reinforcing base fabric braided by the above-mentioned device, FIG. 8 is a cross-sectional view showing still another embodiment of the three-dimensional structural material of the present invention, Figure 9 is a cross-sectional view of the reinforcing base fabric used in the structural material shown in the previous figure, and Figures 10 and 11 show how some of the threads extend into the reinforcing base fabric shown in the previous figure, respectively. The illustrated perspective view, FIG. 12 is a cross-sectional view showing a three-dimensional 1fiX construction material of still another example, and FIGS. 15 and 16 are cross-sectional views of the three-dimensional structural member of still another embodiment -28-. (1)...Three-dimensional structural material, (1a, 1b, 1c
)...Flat component, (2)...Reinforcing base fabric, (2a
, 2b, 2c)...braided fabric part, (3).
・・Shape retaining material, (4, 5, 6) ・・Braided thread, (4', 5
', 6")...straight portion in the width direction and/or diagonal direction, (4", 5", 6")...bent portion, (7)
... Boundary area between fabric parts, (8)... Side edge of fabric part,
(22a, 22b, 22c) - Warp-knitted fabric portion, (24)...stitch yarn, (26)...insertion yarn, (24°)...loop.

Claims (1)

[Claims] 1. A reinforcing base fabric (2) that has a plurality of planar components (1a, 1b, 1c) and serves as a core material, and a shape-retaining material (3) such as synthetic resin or ceramics. Either by impregnating or coating it and then solidifying it into a predetermined three-dimensional structure,
Or, the three-dimensional structural material (1) is obtained by impregnating or covering the reinforcing base fabric (2) with a shape-retaining material (3) and solidifying the reinforcing base fabric (2) in a state in which it is expanded into a predetermined three-dimensional structure, The reinforcing base fabric (2) has fabric parts (2a, 2b, 2c, 22a, 22
b, 22c), and at least one group of threads (4, 5, 6, 24) is connected to the fabric part (2a, 2b).
, 2c, 22a, 22b, 22c) in the width direction and/or diagonal direction straight portions (4', 5', 6')
and the folded portions (4″, 5″, 6″) at the side edges (8) of the fabric parts and the boundaries (7) between the fabric parts, or The yarns (4, 5, 6, 24) belonging to this group are entwined with each other and/or the yarns (4, 5, 6) of this group are arranged continuously in the length direction while continuously forming loops (24'). , 24) and other groups of yarns (4, 5, 6) arranged continuously in the longitudinal direction.
, 26) are intertwined with each other, these threads are mutually connected, and the three-dimensional structural material is constituted by threads arranged continuously in the length direction. 2. The reinforcing base fabric (2) is composed of a braided means such as torsion lace having threads (4, 5, 6) intertwined from at least three directions, and has linear portions in the width direction and/or diagonal direction ( 4', 5', 6') and the bent portions (4'', 5'', 6'') at the side edges (8) and boundary (7) of the fabric part, so that they are arranged continuously in the length direction. At least one group of yarns (4, 5, 6) is attached to the fabric part (2a, 2b, 2c)
) or fabric parts (2a, 2b
, 2c) is folded near the boundary part (7) of the fabric parts (2a, 2b, 2c) and simultaneously intertwined with the threads (4, 5, 6) of the other fabric parts (2a, 2b, 2c). Three-dimensional structural material according to scope 1. 3. At least one group of threads (6) is attached to the fabric part (2
a, 2b, 2c) arranged in a straight line in the length direction,
This straight thread (6) has a diagonal straight part (4'
, 5') and the bent portions (4'', 5'') at the side edges (8) and the boundary (7) of the fabric part, resulting in a group of yarns (4, 5') arranged continuously in the length direction. 5) are intertwined. The three-dimensional structural material according to claim 1. 4. Connection of the reinforcing base fabric (2) by intertwining of stitch yarns (24) that continuously form stitch loops in the length direction, or stitches of the stitch yarns (24) and this yarn (24) Each fabric portion (22a, 22
The three-dimensional structure material according to claim 1, which is made of a warp-knitted fabric in which b, 22c) are knitted. 5. The reinforcing base fabric (2) is made up of two or three fabric parts, and is formed in a substantially T-shaped cross section, a substantially Y-shaped cross section, or an approximately I-shaped or H-shaped cross section. Three-dimensional structural material according to scope 1. 6. The three-dimensional structure material according to claim 1, wherein the reinforcing base fabric (2) is made up of fabric portions on four sides and has a substantially cross-shaped or X-shaped cross section.