JP2019155875A - Resin-containing material structure and production method of resin-containing material structure - Google Patents

Abstract

To provide a resin-containing material structure that makes possible to suppress a development of damage due to peeling between resin-containing materials in a resin-containing material structure obtained by adhering the resin-containing materials with an adhesive and a production method of the resin-containing material structure.SOLUTION: A resin-containing material structure includes a first resin-containing material, a second resin-containing material, and an adhesive. The adhesive layer has a structural adhesive region formed by providing a structural adhesive having high rigidity after adhesion of the first resin-containing material and the second resin-containing material, and a high loss tangent adhesive-containing region formed by containing a high loss tangent adhesive having a higher loss tangent than the structural adhesive after adhesion of the first resin-containing material and the second resin-containing material. The structural adhesive region is provided at a center region of an adhesive surface between the first resin-containing material and the second resin-containing material, and the high loss tangent adhesive-containing region is provided on at least a part of an outer periphery of the structural adhesive region.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a resin-containing material structure and a method for producing a resin-containing material structure.

  A resin-containing material exemplified by a composite material in which a reinforcing fiber is impregnated with a resin is used for a structure constituting a structure such as an aircraft, an automobile, a vehicle, and a ship. Some of these structures are formed by joining and integrating a first resin-containing material and a second resin-containing material. The joining of the first resin-containing material and the second resin-containing material has been increasingly adopted by bonding with an adhesive or the like for cost reduction and weight reduction.

  By the way, the method of suppressing the progress of a crack by a slit by arrange | positioning a slit in the progress direction of a crack is proposed (refer patent document 1).

JP 2011-070183 A

  In the method of Patent Document 1, in the resin-containing material structure obtained by adhering the resin-containing material with an adhesive or the like, since a slit cannot be arranged in the adhesive portion, a crack that develops in the adhesive portion The development of That is, the method of Patent Document 1 has a problem that it is not possible to suppress the progress of damage due to peeling between resin-containing materials.

  This invention is made | formed in view of the above, Comprising: In resin-containing material structure obtained by adhere | attaching resin-containing material with an adhesive etc., it suppresses the progress of the damage by peeling between resin-containing materials. An object of the present invention is to provide a resin-containing material structure and a method for producing the resin-containing material structure.

  In order to solve the above-described problems and achieve the object, a resin-containing material structure includes a first resin-containing material containing a resin, a resin containing a resin, and a first resin-containing material bonded to the first resin-containing material. 2 resin-containing material, and an adhesive layer that adheres the first resin-containing material and the second resin-containing material, and the adhesive layer includes the first resin-containing material and the second resin-containing material. Than the structural adhesive after bonding the first resin-containing material and the second resin-containing material to the structural adhesive region formed by providing a structural adhesive having high rigidity after bonding A high-loss tangent adhesive-containing region formed by including a high-loss tangent adhesive having a high loss tangent, and the structural adhesive region includes the first resin-containing material and the second resin-containing material The high loss tangent Agent-containing region, characterized in that provided in at least part of the outer periphery of the structural adhesive region.

  According to this configuration, the adhesive layer that bonds the first resin-containing material and the second resin-containing material is provided on at least a part of the outer periphery of the structural adhesive region, and the loss tangent is higher than that of the structural adhesive. Since the high-loss tangent adhesive-containing region is formed to include a high-loss tangent adhesive, the progress of damage due to peeling between the resin-containing materials can be suppressed by the high-loss tangent adhesive.

  In this configuration, the structural adhesive preferably has a loss tangent of less than 0.1, and the high-loss tangent adhesive preferably has a loss tangent of 0.1 or more. According to this configuration, the progress of damage due to the separation between the resin-containing materials can be further suppressed by the high-loss tangent adhesive.

  In this configuration, it is preferable that the high-loss tangent adhesive-containing region is provided in an impact propagation region where an impact propagates on the adhesive surface. According to this configuration, since the progress of damage due to peeling between the resin-containing materials can be suppressed by the high-loss tangent adhesive in the impact propagation region that is the tip of the progress of the peeling damage, the resin-containing material can be more efficiently It is possible to suppress the progress of damage due to the peeling between the two.

  In these configurations, the adhesive surface is rectangular, and the high-loss tangent adhesive-containing region is preferably provided to extend along the long side of the adhesive surface at both ends of the short side of the adhesive surface. . According to this configuration, in a region along the long side of the adhesion surface, which is an impact propagation region when the adhesion surface is rectangular, a high loss tangent adhesive suppresses the progress of damage due to separation between the resin-containing materials. Therefore, the progress of damage due to peeling between the resin-containing materials can be suppressed more efficiently.

  Alternatively, the high-loss tangent adhesive-containing region is preferably provided along at least a part of the outer periphery of the adhesive surface. According to this configuration, in a region along at least a part of the outer periphery of the adhesion surface, which is an impact propagation region, regardless of the shape of the adhesion surface, high-loss tangent adhesive suppresses the progress of damage due to separation between the resin-containing materials. Therefore, the progress of damage due to peeling between the resin-containing materials can be suppressed more efficiently.

  In these configurations, it is preferable that at least a part of the high-loss tangent adhesive-containing region is formed by laminating the structural adhesive and the high-loss tangent adhesive. According to this configuration, the adhesive strength can be further improved in the region where the progress of damage due to the separation between the resin-containing materials can be suppressed by the high-loss tangent adhesive.

  It is preferable that the first resin-containing material is a composite material further containing reinforcing fibers, and the second resin-containing material is a composite material further containing reinforcing fibers. According to this configuration, even in the case of a composite material containing a reinforcing fiber that is easily elastically deformed because it is more likely to be deformed among resin-containing materials, the high-loss tangent adhesive suppresses the progress of damage due to peeling between the resin-containing materials. be able to.

  In order to solve the above-described problems and achieve the object, a method for manufacturing a resin-containing material structure includes a first resin-containing material preparation step of preparing a first resin-containing material containing a resin, and a resin. A second resin-containing material preparation step for preparing a second resin-containing material provided by being bonded to the first resin-containing material; and a central region of an adhesive surface between the first resin-containing material and the second resin-containing material. A structural adhesive having high rigidity is provided after bonding the first resin-containing material and the second resin-containing material, and at least a part of the outer periphery of the central region is provided with the first resin-containing material and the second resin. An adhesive containing a high-loss tangent adhesive having a higher loss tangent than the structural adhesive is bonded after bonding the resin-containing material, and the adhesive containing the structural adhesive and the high-loss tangent adhesive is reacted. To form an adhesive layer Characterized in that it comprises a Chakuzaiso forming step.

  According to this configuration, the adhesive layer that bonds the first resin-containing material and the second resin-containing material is provided on at least a part of the outer periphery of the structural adhesive region, and the loss tangent is higher than that of the structural adhesive. Since a resin-containing material structure having a high-loss tangent-adhesive-containing region formed with a high-loss tangent adhesive can be manufactured, damage progress due to delamination between resin-containing materials by the high-loss tangent adhesive It is possible to manufacture a resin-containing material structure in which the above is suppressed.

FIG. 1 is a perspective view schematically showing a resin-containing material structure according to an embodiment. 2 is a bottom view and a side view of the resin-containing material structure of FIG. FIG. 3 is a three-dimensional graph showing the structural adhesive and high-loss tangent adhesive used in the resin-containing material structure of FIG. 1 and their properties. FIG. 4 is a flowchart showing a method for manufacturing the resin-containing material structure according to the embodiment. FIG. 5 is an explanatory diagram for explaining the structural adhesive region and the high-loss tangent adhesive-containing region in Example 1. FIG. 6 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in Example 1. FIG. 7 is an explanatory diagram for explaining the structural adhesive region and the high-loss tangent adhesive-containing region in Example 2. FIG. 8 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in Example 2. FIG. 9 is an explanatory diagram for explaining the structural adhesive region and the high-loss tangent adhesive-containing region in Example 3. FIG. 10 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in Example 3. FIG. 11 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in a comparative example.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, the constituent elements in the embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same. Furthermore, the constituent elements described below can be appropriately combined.

[Embodiment]
FIG. 1 is a perspective view schematically showing a resin-containing material structure 10 according to the embodiment. FIG. 2 is a top view of the resin-containing material structure 10 of FIG. Examples of the resin-containing material structure 10 are those used for structures such as aircraft, automobiles, vehicles, and ships. As shown in FIGS. 1 and 2, the resin-containing material structure 10 includes a first resin-containing material 12, a second resin-containing material 14, and an adhesive layer 16. Moreover, the resin-containing material structure 10 may further include support members 17 that are supported on both sides of the first resin-containing material 12 as shown in FIG.

  The first resin-containing material 12 is a resin-containing material containing a resin. The first resin-containing material 12 is exemplified by a member used for a fuselage of a structure such as an aircraft, an automobile, a vehicle, and a ship, and when the resin-containing material structure 10 is used for an aircraft structure, The skin in the trunk is exemplified. Although the first resin-containing material 12 has a flat plate shape in the present embodiment, the present invention is not limited to this, and has a shape having a surface that can be bonded to any one surface of the second resin-containing material 14. Any shape is acceptable.

  The second resin-containing material 14 is a resin-containing material containing a resin, and is provided by being bonded to the first resin-containing material 12. The second resin-containing material 14 is exemplified by a member that supplements the structural strength of the first resin-containing material 12, and when the resin-containing material structure 10 is used for an aircraft structure, a stringer in an aircraft fuselage. Examples of the material used for the frame, longilon, and the like. The second resin-containing material 14 has a flat plate shape in the present embodiment, but the present invention is not limited to this, and has a shape having a surface that can be bonded to any one surface of the first resin-containing material 12. Any shape is acceptable.

  The resin used for the first resin-containing material 12 and the second resin-containing material 14 is preferably exemplified by a thermosetting resin or a thermoplastic resin. Examples of the thermosetting resin include an epoxy resin, a polyester resin, and a vinyl ester resin. Examples of the thermoplastic resin include polyamide resin, polypropylene resin, ABS (Acrylonitrile Butadiene Styrene) resin, polyether ether ketone (PEEK), polyether ketone ketone (PEKK), polyphenylene sulfide (PPS), and the like. However, the resin impregnated in the reinforcing fibers is not limited to this, and other resins may be used.

  Each of the first resin-containing material 12 and the second resin-containing material 14 is preferably a composite material that further contains a reinforcing fiber and is formed by impregnating the resin into the reinforcing fiber. As the strength of the first resin-containing material 12 and the second resin-containing material 14 is improved, the strength of the resin-containing material structure 10 is improved. Examples of the reinforcing fibers used for the first resin-containing material 12 and the second resin-containing material 14 are those obtained by bundling several hundred to several thousand basic fibers of 5 μm or more and 7 μm or less. The basic fibers constituting the reinforcing fibers used for the first resin-containing material 12 and the second resin-containing material 14 are preferably exemplified by carbon fibers, glass fibers, plastic fibers, aramid fibers, and metal fibers.

  The adhesive layer 16 is a layer that bonds the surface of the first resin-containing material 12 that faces the second resin-containing material 14 and the surface of the second resin-containing material 14 that faces the first resin-containing material 12. The adhesive layer 16 has a structural adhesive region and a high-loss tangent adhesive-containing region. The structural adhesive region is a region formed by providing a structural adhesive having high rigidity after bonding the first resin-containing material 12 and the second resin-containing material 14. The high-loss tangent adhesive-containing region is a region formed by including a high-loss tangent adhesive having a higher loss tangent than the structural adhesive after bonding the first resin-containing material 12 and the second resin-containing material 14. is there. The structural adhesive preferably has a loss tangent of less than 0.1 considering the properties of the adhesive described later, and the high loss tangent adhesive preferably has a loss tangent of 0.1 or more. In the structural adhesive region, the structural adhesive is provided in the central region of the bonding surface of the first resin-containing material 12 to the second resin-containing material 14. The high-loss tangent adhesive-containing region is provided on at least a part of the outer periphery of the structural adhesive region.

  As shown in FIG. 2, when an impact is applied to the position 18 by the impact object 19, the resin-containing material structure 10 propagates the impact of the impact object 19 outward from the position 18. Here, since the first resin-containing material 12 and the second resin-containing material 14 constituting the resin-containing material structure 10 have low stretchability, elastic deformation occurs in response to the received impact. It has the property of being easy. When the first resin-containing material 12 and the second resin-containing material 14 constituting the resin-containing material structure 10 are composite materials, they tend to bend easily due to elastic deformation in response to the received impact. Further strengthens. For this reason, the resin-containing material structure 10 includes the first resin-containing material structure 10 from the outer peripheral portion of the adhesive layer 16 as the first resin-containing material 12 and the second resin-containing material 14 are bent by the propagated impact. A force is applied in a direction that causes damage due to peeling between the material 12 and the second resin-containing material 14. In the following, this impact propagates and becomes a starting point where a force is applied in a direction that causes damage due to peeling between the first resin-containing material 12 and the second resin-containing material 14, and becomes the leading point of progress of peeling damage. The region is referred to as an impact propagation region.

  FIG. 3 is a three-dimensional graph showing the structural adhesive and high-loss tangent adhesive used in the resin-containing material structure 10 of FIG. 1 and their properties. The degree of damage of the adhesive layer 16 to the impact applied to the position 18 by the impact object 19 will be described below with reference to FIG. In the three-dimensional graph shown in FIG. 3, the horizontal axis represents the loss tangent of the adhesive layer 16, that is, tan δ, and the depth axis represents the thickness (unit: mm) of the adhesive layer 16. A longitudinal axis forms an adhesive layer 16 of each loss tangent and each thickness on the entire adhesive surface between the first resin-containing material 12 and the second resin-containing material 14, and is moved to a position 18 by the impact object 19. Indicates the damage rate (unit:%) when a predetermined impact is applied.

  As shown in FIG. 3, the damage rate when the adhesive layer 16 having a loss tangent of 0.020 and a thickness of 0.25 mm was formed was 40.7%. When the adhesive layer 16 having a loss tangent of 0.020 and a thickness of 2.00 mm was formed, the damage rate was 64.0%. When the adhesive layer 16 having a loss tangent of 0.023 and a thickness of 0.25 mm was formed, the damage rate was 34.6%. When the adhesive layer 16 having a loss tangent of 0.023 and a thickness of 2.00 mm was formed, the damage rate was 45.1%. When the adhesive layer 16 having a loss tangent of 0.039 and a thickness of 0.25 mm was formed, the damage rate was 29.3%. When the adhesive layer 16 having a loss tangent of 0.039 and a thickness of 2.00 mm was formed, the damage rate was 52.6%.

  Here, the adhesive having a loss tangent of 0.020 is an epoxy adhesive, and a room temperature curable paste type structural adhesive used for a structure used in an aircraft is used. The adhesive having a loss tangent of 0.023 is an epoxy adhesive, and a thermosetting film type structural adhesive used for structures used in aircraft. The adhesive having a loss tangent of 0.039 is an epoxy adhesive, and a room temperature curing paste type structural adhesive used for general-purpose structures.

  Further, as shown in FIG. 3, the damage rate when the adhesive layer 16 having a loss tangent of 0.109 and a thickness of 0.25 mm was formed was 0.0%. When the adhesive layer 16 having a loss tangent of 0.109 and a thickness of 2.00 mm was formed, the damage rate was 0.0%. When the adhesive layer 16 having a loss tangent of 0.126 and a thickness of 0.25 mm was formed, the damage rate was 0.0%. When the adhesive layer 16 having a loss tangent of 0.126 and a thickness of 2.00 mm was formed, the damage rate was 0.0%. When the adhesive layer 16 having a loss tangent of 0.344 and a thickness of 0.25 mm was formed, the damage rate was 0.0%. When the adhesive layer 16 having a loss tangent of 0.344 and a thickness of 2.00 mm was formed, the damage rate was 0.0%.

  Here, the adhesive having a loss tangent of 0.109 is an epoxy adhesive containing ethylene propylene diene M-class (EPDM) rubber, and a sheet type high loss tangent adhesive is used. Using. Further, as the adhesive having a loss tangent of 0.126, a polyurethane high-loss tangent adhesive that is an elastic adhesive was used. The adhesive having a loss tangent of 0.344 is a polyurethane adhesive containing ethylene vinyl acetate rubber, and a sheet type high loss tangent adhesive was used.

  From the results of the loss tangent and the damage rate at each thickness of the adhesive layer 16 shown in the three-dimensional graph of FIG. 3, the adhesive layer 16 having a loss tangent of 0.1 or more is predetermined at the position 18 by the impact object 19. When the impact is applied, it is possible to suppress the occurrence of damage applied in the peeling direction between the first resin-containing material 12 and the second resin-containing material 14, and to suppress the progress of this damage. I understand. This means that the adhesive layer 16 having a loss tangent of 0.1 or more absorbs this type of impact and thereby suppresses this type of damage, and suppresses this type of damage from progressing. It is thought that. For this reason, in the resin-containing material structure 10, the high-loss tangent adhesive-containing region is preferably provided in the impact propagation region in the adhesive layer 16, and further, the high-loss tangent adhesive-containing region is used in the high-loss tangent adhesive-containing region. More preferably, the loss tangent of the adhesive is 0.1 or more. In these cases, the high loss tangent adhesive-containing region can more effectively suppress the progress of damage due to peeling between the resin-containing materials.

  The resin-containing material structure 10 has a high-loss tangent adhesive-containing region on at least a part of the outer periphery of the structural adhesive region in the adhesive layer 16. Therefore, the resin-containing material structure 10 is damaged by peeling between the first resin-containing material 12 and the second resin-containing material 14 due to the high-loss tangent adhesive included in the high-loss tangent adhesive-containing region. Occurrence toward the structural adhesive region inside the high loss tangent adhesive containing region is suppressed. Then, the resin-containing material structure 10 is directed toward the structural adhesive region inside the high-loss tangent adhesive-containing region by the high-loss tangent adhesive contained in the high-loss tangent adhesive-containing region. Progress can be suppressed.

  The resin-containing material structure 10 also has a structural adhesive region in the adhesive layer 16. For this reason, the adhesive strength between the first resin-containing material 12 and the second resin-containing material 14 is improved, and it is resistant to various types of external forces different from the impact applied to the position 18 by the impact object 19. It has become. Accordingly, since the resin-containing material structure 10 has both the structural adhesive region and the high-loss tangent adhesive-containing region in the adhesive layer 16, the resin-containing material structure 10 includes the impact applied to the position 18 by the impact object 19. It is resistant to impacts, and is resistant to various external forces of a type different from this type of impact.

  The structural adhesive used in the structural adhesive region in the adhesive layer 16 is preferably exemplified by an acrylic adhesive in addition to the above.

  The impact propagation region is at least a part of the outer periphery of the bonding surface between the first resin-containing material 12 and the second resin-containing material 14. For this reason, the resin-containing material structure 10 is preferably provided with a high-loss tangent adhesive-containing region along at least a part of the outer periphery of the adhesive surface in the adhesive layer 16, and in this case, the resin-containing material structure is more efficiently contained. The progress of damage due to delamination between materials can be suppressed.

  The impact propagation region is determined in detail by the shape of the bonding surface between the first resin-containing material 12 and the second resin-containing material 14. For example, when the bonding surface is circular, the impact propagation region is spread uniformly over the entire outer periphery of the bonding surface. For this reason, in the resin-containing material structure 10, when the bonding surface is circular, the high-loss tangent adhesive-containing region is preferably provided along the entire outer periphery of the bonding surface, and the resin-containing material is more efficiently obtained. It is possible to suppress the progress of damage due to the peeling between the two.

  For example, when the bonding surface is elliptical, the shock propagation region is a region where the propagation distance of the shock is short, that is, a region in the minor axis direction of the outer periphery of the bonding surface. For this reason, in the resin-containing material structure 10, when the bonding surface is elliptical, the high-loss tangent adhesive-containing region is preferably provided along the region in the minor axis direction of the bonding surface. The progress of damage due to peeling between resin-containing materials can be suppressed well.

  Further, for example, when the adhesive surface is rectangular, the impact propagation region extends in the vicinity of the center along the long side in the region where the impact propagation distance becomes short, that is, at both ends of the short side of the adhesive surface. . For this reason, in the resin-containing material structure 10, when the bonding surface is rectangular, the high-loss tangent adhesive-containing region is provided to extend along the long side of the bonding surface at both ends of the short side of the bonding surface. It is preferable, and the progress of damage due to peeling between the resin-containing materials can be suppressed more efficiently.

  Also, for example, when the adhesive surface is polygonal, the impact propagation region is a region where the impact propagation distance is shortened, i.e., near the center along the side that forms the ends on both sides where the distance is the shortest. It has spread. For this reason, in the resin-containing material structure 10, when the bonding surface is polygonal, the high-loss tangent adhesive-containing region is provided along the sides constituting the end portions on both sides where the distance is shortest on the bonding surface. It is preferable, and the progress of damage due to peeling between the resin-containing materials can be suppressed more efficiently.

  If the shape of the bonding surface is complicated, the first resin-containing material 12 and the second resin-containing material 14 are both regarded as elastic bodies that do not undergo plastic deformation, and a simulation analysis of elastic stress is performed. The propagation region can be estimated with a desired accuracy. For this reason, in the resin-containing material structure 10, when the shape of the bonding surface is complicated, a high-loss tangent adhesive-containing region in the adhesive layer 16 is estimated by simulation analysis of elastic stress on the outer periphery of the bonding surface. It is preferable to be provided along the impact propagation region.

  The resin-containing material structure 10 further includes at least a part of the high-loss tangent adhesive-containing region in which the structural adhesive and the high-loss tangent adhesive are the first resin-containing material 12 and the second resin-containing material 14. It is preferable to be laminated in the bonding direction. When the resin-containing material structure 10 is provided by laminating a structural adhesive and a high-loss tangent adhesive, the structural adhesive is provided on the side in contact with the first resin-containing material 12 or the second resin-containing material 14. It is preferable to be provided. In this case, the resin-containing material structure 10 can further improve the adhesive strength in a region where the progress of damage due to peeling between the resin-containing materials can be suppressed by the high-loss tangent adhesive. Therefore, the resin-containing material structure 10 in this case is subjected to a similar impact including an impact applied to the position 18 by the impact object 19 by the high-loss tangent adhesive in the high-loss tangent adhesive-containing region. Can also be made resistant to various external forces of a kind different from this kind of impact by means of structural adhesives.

  Since the resin-containing material structure 10 has the above-described configuration, it is obtained by bonding the first resin-containing material 12 and the second resin-containing material 14 that are resin-containing materials with an adhesive or the like as described above. In this case, since the adhesive layer 16 has the high-loss tangent adhesive-containing region, the first resin-containing material 12 and the second resin-containing material 14 are used by the high-loss tangent adhesive contained in the high-loss tangent adhesive-containing region. It is possible to suppress the progress of damage due to peeling between the two. Further, even in the case of a composite material containing reinforcing fibers that are easily elastically deformed because the resin-containing material structure 10 is more likely to be deformed among the resin-containing materials, the resin-containing material structure 10 is similarly peeled off by the high-loss tangent adhesive. It is possible to suppress the progress of damage due to the damage.

  FIG. 4 is a flowchart showing a method for manufacturing the resin-containing material structure 10 according to the embodiment. As shown in FIG. 4, the manufacturing method of the resin-containing material structure 10 according to the embodiment includes a first resin-containing material preparation step S11, a second resin-containing material preparation step S12, an adhesive layer forming step S13, including.

  The first resin-containing material preparation step S11 is a step of preparing a first resin-containing material 12 containing a resin. In the first resin-containing material preparation step S11, specifically, the first resin-containing material 12 is obtained by molding the resin into the shape of the first resin-containing material 12 and curing it. When preparing a composite material as the first resin-containing material 12, the first resin-containing material preparation step S <b> 11 is performed by impregnating a resin into a reinforcing fiber and molding the resin into a shape of the first resin-containing material 12. The first resin-containing material 12 that is a composite material is obtained.

  The second resin-containing material preparation step S12 is a step of preparing a second resin-containing material 14 containing a resin. Specifically, the second resin-containing material preparation step S12 obtains the second resin-containing material 14 by molding the resin into the shape of the second resin-containing material 14 and curing it. When preparing a composite material as the second resin-containing material 14, the second resin-containing material preparation step S12 is performed by impregnating a resin into a reinforcing fiber and molding the resin into the shape of the second resin-containing material 14. Then, the second resin-containing material 14 which is a composite material is obtained.

  In the adhesive layer forming step S13, the adhesive layer is formed between the surface of the first resin-containing material 12 facing the second resin-containing material 14 and the surface of the second resin-containing material 14 facing the first resin-containing material 12. 16 is a step of bonding between these surfaces. In the adhesive layer forming step S13, specifically, in either one of the adhesive surface on the first resin-containing material 12 side and the adhesive surface on the second resin-containing material 14 side, a structural region is provided in the central region of the adhesive surface. An adhesive is provided as a structural adhesive region, and an adhesive containing a high-loss tangent adhesive is provided on at least a part of the outer periphery of the central region provided with the structural adhesive to form a high-loss tangent adhesive-containing region. React adhesives including structural adhesives and high loss tangent adhesives. By passing through this adhesive layer forming step S13, the resin-containing material structure 10 according to the embodiment is obtained.

  In the adhesive layer forming step S13, when both a structural adhesive and a high loss tangent adhesive are used, a structural adhesive having a relatively high viscosity is first applied to the structural adhesive region. It is preferable that an adhesive containing a high-loss tangent adhesive having a relatively low viscosity is applied later to the high-loss tangent adhesive-containing region. In the adhesive layer forming step S13, when both of the structural adhesive and the high-loss tangent adhesive are of sheet type, the structural adhesive is disposed in the structural adhesive region regardless of the order, It is preferable to arrange an adhesive containing a high-loss tangent adhesive in the high-loss tangent adhesive-containing region. In the adhesive layer forming step S13, when one of the structural adhesive and the high-loss tangent adhesive is a sheet type and the other is a paste type, the one using the sheet type first is used. It is preferable to arrange an adhesive and apply the adhesive of the paste type later.

  In the adhesive layer forming step S13, when both the structural adhesive and the high-loss tangent adhesive are sheet-type, the structural adhesive and the high-loss tangent adhesive are included in the high-loss tangent adhesive-containing region. Are preferably provided in a stacked manner. In the adhesive layer forming step S <b> 13, in this case, it is preferable to laminate the structural adhesive on the side in contact with the first resin-containing material 12 or the second resin-containing material 14.

  Since the manufacturing method of the resin-containing material structure 10 has the above-described configuration, the first resin-containing material 12 and the second resin-containing material 14 that are resin-containing materials are bonded with an adhesive or the like as described above. In order to provide the adhesive layer 16 having the high-loss tangent adhesive-containing region, the first resin-containing material 12 and the second resin are formed by the high-loss tangent adhesive contained in the high-loss tangent adhesive-containing region. It is possible to obtain the resin-containing material structure 10 capable of suppressing the progress of damage due to the peeling with the resin-containing material 14.

  Hereinafter, the present invention will be described in more detail based on examples made to clarify the effects of the present invention. In addition, this invention is not limited at all by the following examples.

  FIG. 5 is an explanatory diagram for explaining the structural adhesive region 21 and the high-loss tangent adhesive-containing region 22 in the first embodiment. FIG. 6 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in Example 1. FIG. 7 is an explanatory diagram for explaining the structural adhesive regions 31 and 33 and the high-loss tangent adhesive-containing region 32 in the second embodiment. FIG. 8 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in Example 2. FIG. 9 is an explanatory diagram for explaining the structural adhesive region 41 and the high-loss tangent adhesive-containing region 42 in the third embodiment. FIG. 10 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in Example 3. FIG. 11 is an explanatory diagram showing progress of damage due to peeling between resin-containing materials in a comparative example.

Example 1
As Example 1, in the resin-containing material structure 10 according to the above-described embodiment, as shown in FIG. 5, the bonding surface is rectangular, and the structural adhesive region 21 is located at the central portion of the short side of the bonding surface. The high-loss tangent adhesive-containing region 22 is provided so as to extend along the long side at both ends of the short side of the adhesive surface, that is, outside the structural adhesive region 21.

  FIG. 6 shows an ultrasonic flaw detection image obtained by focusing on the adhesive layer 16 after applying an impact to the position 18 by the impact object 19 with respect to the resin-containing material structure 10 according to Example 1. In FIG. 6, a black portion or a gray portion represents a portion where the adhesive layer 16 is maintained without being damaged, and a white portion represents a portion where the adhesive layer 16 has been damaged and peeling has occurred. ing. 8, 10, and 11 that will be described later are the same as those represented by the black portion, the gray portion, and the white portion. In Example 1, as shown in FIG. 6, even if the impact 18 is received at the position 18, the region corresponding to the structural adhesive region 21 is also the region corresponding to the high-loss tangent adhesive-containing region 22. In addition, it was found that almost no white portion representing peeling was observed, and the damage rate could be regarded as 0%.

(Example 2)
As Example 2, in the resin-containing material structure 10 according to the above-described embodiment, as shown in FIG. 7, the bonding surface is rectangular, and the structural adhesive region 31 is located at the central portion of the short side of the bonding surface. The high-loss tangent adhesive containing region 32 extends along the long side at positions slightly closer to the center than both ends of the short side of the bonding surface, that is, outside the structural adhesive region 31. The structural adhesive region 33 is provided to extend along the long side at both ends of the short side of the adhesive surface, that is, further outside the high-loss tangent adhesive-containing region 32.

  FIG. 8 shows an ultrasonic flaw detection image obtained by focusing on the adhesive layer 16 after applying an impact to the resin-containing material structure 10 according to Example 2 in the same manner as in Example 1. . In Example 2, as shown in FIG. 8, as a result of receiving the impact by the impact object 19 at the position 18, the region corresponding to the structural adhesive region 31 and the high loss tangent adhesive containing region 32 represents peeling. The white portion was hardly seen, and in the region corresponding to the structural adhesive region 33, it was found that a white portion representing peeling appeared in a wide range and the damage rate was 26.5%.

(Example 3)
As Example 3, in the resin-containing material structure 10 according to the above-described embodiment, as shown in FIG. 9, the bonding surface is rectangular, and the structural adhesive region 41 is formed at the central portion of the long side of the bonding surface. The high-loss tangent adhesive-containing region 42 is provided so as to extend along the short side at both ends of the long side of the adhesive surface, that is, outside the structural adhesive region 41.

  After applying an impact to the resin-containing material structure 10 according to Example 3 in the same manner as in Example 1 and Example 2, an ultrasonic flaw detection image photographed while focusing on the adhesive layer 16 was obtained. As shown in FIG. In Example 3, as shown in FIG. 10, as a result of receiving the impact by the impact object 19 at the position 18, almost no white portion representing peeling is seen in the region corresponding to the high-loss tangent adhesive-containing region 42. In the region corresponding to the structural adhesive region 41, a white portion representing peeling appeared in a wide range. In Example 3, among the regions corresponding to the structural adhesive region 41, a white portion representing peeling appears in a wide range in the region 41a extending along the long side at both ends of the short side of the bonding surface, In the region 41b, a white portion representing peeling was hardly seen. In Example 3, the damage rate was found to be 30.6%.

(Comparative example)
As a comparative example, in the resin-containing material structure having the same shape as the above-described embodiment, the adhesive surface is rectangular, the structural adhesive region 51 is provided on the entire adhesive surface, and the high-loss tangent adhesive-containing region is provided. I did not provide it.

  After applying an impact to the resin-containing material structure according to the comparative example in the same manner as in Example 1, Example 2, and Example 3, an ultrasonic flaw detection image taken focusing on the adhesive layer was taken. As shown in FIG. In the comparative example, as shown in FIG. 11, as a result of receiving the above-described impact, among the regions corresponding to the structural adhesive region 51, the region 51 a extending along the long side on both ends of the short side of the bonding surface. The white part representing peeling appeared in a wide range, and the white part representing peeling was hardly seen in the other region 51b. In the comparative example, the damage rate was found to be 45.1%.

  By comparing the ultrasonic flaw detection images shown in Example 1, Example 2, Example 3 and Comparative Example described above, the high-loss tangent adhesive-containing region 22 in Example 1 and the high-loss tangent in Example 2 are compared. In the adhesive-containing region 32 and the high-loss tangent adhesive-containing region 42 in Example 3, generation and progress of damage due to peeling between the first resin-containing material 12 and the second resin-containing material 14 can be suppressed. Was confirmed.

  Further, from the ultrasonic flaw detection images respectively shown in the above-described Example 1, Example 2, Example 3, and Comparative Example, when the adhesive surface is rectangular, as described above, the impact propagation region is the impact propagation. It was confirmed that the region spreads in the vicinity of the center along the long side in the region where the distance becomes short, that is, on both ends of the short side of the bonding surface. It has also been confirmed that this impact propagation region has the same tendency regardless of the position of the support member 17. Thereby, when the bonding surface is rectangular, as described above, the high-loss tangent adhesive-containing region is preferably provided so as to extend along the long side of the bonding surface at both ends of the short side of the bonding surface. It was confirmed that the progress of damage due to the peeling between the resin-containing materials can be suppressed more efficiently.

10 resin-containing material structure 12 first resin-containing material 14 second resin-containing material 16 adhesive layer 17 support member 18 position 19 impact object 21, 31, 33, 41, 51 structural adhesive region 22, 32, 42 high Loss tangent adhesive containing region 41a, 41b, 51a, 51b region

Claims (8)

A first resin-containing material containing a resin;
A resin-containing second resin-containing material provided by adhering to the first resin-containing material;
An adhesive layer that bonds the first resin-containing material and the second resin-containing material;
Including
The adhesive layer is
A structural adhesive region formed by providing a structural adhesive having high rigidity after bonding the first resin-containing material and the second resin-containing material;
A high-loss tangent adhesive-containing region formed by including a high-loss tangent adhesive having a higher loss tangent than the structural adhesive after bonding the first resin-containing material and the second resin-containing material;
Have
The structural adhesive region is provided in a central region of an adhesive surface between the first resin-containing material and the second resin-containing material, and the high-loss tangent adhesive-containing region is an outer periphery of the structural adhesive region. A resin-containing material structure which is provided at least in part. The structural adhesive has a loss tangent of less than 0.1;
The resin-containing material structure according to claim 1, wherein the high-loss tangent adhesive has a loss tangent of 0.1 or more.   The resin-containing material structure according to claim 1, wherein the high-loss tangent adhesive-containing region is provided in an impact propagation region where an impact propagates on the adhesive surface. The adhesive surface is rectangular,
The high-loss tangent adhesive-containing region is provided so as to extend along the long side of the adhesive surface at both ends of the short side of the adhesive surface. The resin-containing material structure described in 1.   The resin-containing material structure according to any one of claims 1 to 3, wherein the high-loss tangent adhesive-containing region is provided along at least a part of an outer periphery of the adhesion surface.   6. The structure according to claim 1, wherein at least a part of the high-loss tangent adhesive-containing region is formed by laminating the structural adhesive and the high-loss tangent adhesive. The resin-containing material structure according to claim 1. The first resin-containing material is a composite material further containing reinforcing fibers,
The resin-containing material structure according to any one of claims 1 to 6, wherein the second resin-containing material is a composite material further containing reinforcing fibers. A first resin-containing material preparation step of preparing a first resin-containing material containing a resin;
A second resin-containing material preparation step of preparing a second resin-containing material that contains a resin and is provided by adhering to the first resin-containing material;
In the central region of the bonding surface between the first resin-containing material and the second resin-containing material, a structural adhesive having high rigidity after bonding the first resin-containing material and the second resin-containing material is provided, An adhesive containing a high-loss tangent adhesive having a loss tangent higher than that of the structural adhesive after bonding the first resin-containing material and the second resin-containing material to at least a part of the outer periphery of the central region. An adhesive layer forming step of forming an adhesive layer by reacting an adhesive including the structural adhesive and the high-loss tangent adhesive;
The manufacturing method of the resin containing material structure characterized by including.

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