JP6377452B2 - Composite, its manufacturing method, and composite bearing member - Google Patents

Description

  Embodiments described herein relate generally to a composite, a manufacturing method thereof, and a composite bearing member.

Conventionally, a composite body in which different material members are joined has been proposed.
According to such a composite, for example, functions and characteristics that are difficult to obtain with a member made of a single material can be obtained, optimization of the member, weight reduction, and reduction of manufacturing cost can be achieved. There are various advantages.

  As an example of such a composite, a composite of a resin material member and a metal material member can be given. When trying to obtain such a composite, it is difficult to employ diffusion bonding as in joining metal materials, fusion method as in joining resin materials, or the like. . For this reason, it is generally performed to join the resin material member and the metal material member using an adhesive.

  However, since the difference in coefficient of thermal expansion between resin material and metal material is generally large, a large thermal stress is likely to occur at the bonding interface between the resin material and metal material, thereby increasing the bonding strength between the two members. In some cases, both members were peeled off.

  In addition, the adhesive material needs to have sufficient adhesive strength to both the resin material and the metal material. However, depending on the specific combination example of the resin material and the metal material, both materials are sufficient. There is a problem that it is difficult to select an adhesive having a high adhesive strength.

  In view of this, it has been considered that surface treatment of other members (for example, a member made of a metal material) or that an intermediate layer is interposed between a member made of a fluorine-based resin material and a member made of a metal material. Yes.

  By the way, tin (Sn) -based white metal has been used as a surface material of a sliding bearing material of a power generation device. Here, typical examples of tin-based white metal for sliding bearings include those containing Sn83 to 87 wt%, Sb8 to 10 wt%, and Cu 5 to 7 wt%.

  In recent years, design aimed at improving the performance, improving efficiency and reducing environmental impact of power generation equipment has progressed, bearing surface pressure tends to increase, and sliding speed tends to increase, and the change from oil lubrication to water lubrication, etc. The usage environment is changing. In view of this, resin materials have been used as an alternative to white metal that has already been improved and has reached the limit of use. For example, fluororesin materials represented by PTFE are being studied.

  A sliding bearing made of such a resin material may be made of substantially only a resin material depending on the application and required performance. For example, in consideration of rigidity, durability, accuracy improvement, etc. Compounding with a material (for example, a metal material) or the like, a sliding bearing is configured.

Japanese Patent No. 3194866

  Therefore, the problem to be solved by the present invention is a composite using an adhesive material that has been widely used without requiring any special equipment or operation, and it is inexpensive and easy to achieve joint strength and shape stability. It is to provide a composite having excellent properties and durability.

  In view of the situation as described above, the present inventors have found a complex that can satisfy the above requirements.

Therefore, the complex according to the embodiment of the present invention is:
An adhesive layer including a first member comprising a resin material, a second member comprising a metal material, and an adhesive disposed between the first member and the second member A composite comprising:
A network structure is embedded in the first member, and at least a part of the network structure is exposed on the adhesive layer side,
The network structure is impregnated with at least a part of the adhesive.

And the manufacturing method of the composite_body | complex by embodiment of this invention is the following.
An adhesive layer including a first member comprising a resin material, a second member comprising a metal material, and an adhesive disposed between the first member and the second member Is a method for producing a composite comprising the following steps (A) and (B).

Step (A): Filling the mesh material with a resin material and depositing the resin material on the mesh structure to form a first member having a surface with at least a part of the mesh structure exposed. Step (B): Bonding the surface of at least a part of the network structure of the first member formed in the step (A) with the surface of the second member. And the step of joining the first member and the second member while impregnating the mesh structure with the adhesive material. The composite bearing member according to an embodiment of the present invention comprises: ,
A sliding bearing member made of the composite, comprising a bearing sliding material formed by the first member, and a bearing base material formed by the second member. And

Sectional drawing which shows the preferable composite_body | complex and composite bearing member by embodiment of this invention. FIG. 2 is a partially enlarged view showing a part of a preferred composite and composite bearing member according to the embodiment of the present invention shown in FIG. 1. The top view which shows the outline | summary of the sliding bearing formed by combining the composite bearing member by embodiment of this invention. The perspective view which shows one preferable specific example of the composite bearing member by embodiment of this invention.

  The embodiments described below are exemplary, and therefore the scope of the invention is not limited to these specifically disclosed ranges.

<Composite>
Hereinafter, among the composites according to the embodiments of the present invention, particularly preferred specific examples will be described with reference to the drawings as necessary.

  FIG. 1 is a cross-sectional view of a preferred embodiment of a composite according to an embodiment of the present invention, and FIG. 2 shows a Z portion surrounded by a dotted line of the composite according to the embodiment of the present invention in FIG. It is a partial enlarged view.

A composite 1 according to an embodiment of the present invention shown in FIGS. 1 and 2 includes a first member 2 comprising a resin material, a second member 3 comprising a metal material, and the first member A composite 1 comprising an adhesive layer 4 including an adhesive disposed between a member 2 and the second member 3,
A mesh structure 5 is embedded in the first member 2, and at least a part of the mesh structure 5 is exposed to the adhesive layer 4 side.
The network structure 5 is impregnated with at least a part 4 ′ of the adhesive.

<< First member and second member >>
Preferred examples of the resin material constituting the first member in the composite according to the embodiment of the present invention include fluorine resin material, polyacetal, polypropylene, polyphenylene sulfide, polyether ether ketone, polyimide, and polyamideimide resin material. Can be mentioned. Fluorine resin (for example, tetrafluoroethylene (PTFE), tetrafluoroethylene / hexafluoroethylene copolymer resin (FEP), tetrafluoroethylene / ethylene copolymer resin (ETFE), tetrafluoroethylene / perfluoro) Examples thereof include alkoxyethylene copolymer resin (PFA), etc. It may be a mixture of two or more resin materials, and among these, particularly preferred resin materials include tetrafluoroethylene (PTFE), Mention may be made of tetrafluoroethylene / perfluoroalkoxyethylene copolymer resin (PFA).

  Moreover, the resin material which forms a 1st member can mix | blend various fillers as needed. Examples of such fillers include fibers, whiskers and particles made of inorganic materials. Preferred fillers are carbon fibers, glass fibers, alumina fibers, alumina / silica fibers, silicon carbide fibers having an average diameter of 1 to 10 μm and an aspect ratio of 10 to 100, an average diameter of 0.1 to 10 μm, and an aspect ratio of Examples thereof include 10 to 100 potassium titanate whiskers, aluminum borate whiskers, zinc oxide whiskers, mullite whiskers, carbon particles having an average particle diameter of 1 to 100 μm, graphite particles, molybdenum disulfide particles, and boron nitride particles. A plurality of these fillers can be used in combination.

  According to such a filler, the mechanical characteristics (for example, strength, compression / bending rigidity, creep resistance, etc.) of the first member are improved, and the friction / wear characteristics are improved (for example, reduction of the friction coefficient, resistance to resistance). This contributes to improvement in wearability and the like, and improvement in thermal characteristics (for example, reduction in thermal expansion coefficient, improvement in thermal conductivity, etc.). The combination and blending amount of these fillers are appropriately selected according to the required performance of the first member, and are preferably 5 to 30% by volume, particularly preferably 10 to 20% by volume (with the resin material) The total amount with the filler is 100% by volume). If the blending amount of the filler is less than 5% by volume, the above effect cannot be sufficiently exerted, and if it exceeds 30% by volume, the volume occupancy of the resin material of the base material of the first member is small and sufficient bonding strength cannot be secured. Because there are things.

  In the composite according to the embodiment of the present invention, there are cases where these fillers are filled in the mesh of the network structure 5 together with the resin material and when they are not filled.

  In the first member of the composite according to the embodiment of the present invention, a mesh structure 5 is embedded, and at least a part of the mesh structure 5 is exposed to the adhesive layer 4 side (details described later).

  The 2nd member in the composite_body | complex by embodiment of this invention contains a metal material. Preferable specific examples of the metal constituent material include, for example, iron, stainless steel, titanium, cobalt, nickel, copper, aluminum, and an alloy containing any one of these metal species.

  In the cross-sectional view of the composite 1 in FIG. 1, the first member 2 and the second member 3 are shown with the same length, but in the composite according to the embodiment of the present invention, the first member And the second member may be the same or different with respect to their shape, size, thickness, and the like. Also, the number of first members and second members can be different. For example, it can be a composite of one continuous second member and a plurality of first members.

<< Mesh structure >>
The first member 2 in the composite body 1 shown in FIG. 1 has a mesh structure 5 embedded therein, and at least a part of the mesh structure 5 is exposed to the adhesive layer 4 side.

  In more detail, as shown in FIG. 2, the first member 2 has a mesh structure 5 containing a fibrous material, and includes a first fiber bundle 5a composed of a plurality of fibers, and a plurality of fibers. It is a woven fabric made of an intersection with the second fiber bundle 5b made of fibers.

  As described above, the network structure (specifically, the woven fabric) is embedded in the first member 2, so that a plurality of meshes of the network structure 5 (that is, the first fiber bundles 5 a and , Each of which is formed by crossing with the second fiber bundles 25 and is surrounded by the first fiber bundles 5a and the second fiber bundles 5b) is filled with the resin material 2 ′. Thus, an “integrated product of a mesh structure and a resin material” is formed.

  In addition, when the resin material which forms the 1st member is what the above-mentioned filler was mix | blended, it is in the grid-shaped clearance gap part enclosed by the 1st fiber bundle 5a and the 2nd fiber bundle 5b. There are both a case where the filler is filled together with the resin material and a case where the filler is not filled.

  In the first member 2 according to the embodiment of the present invention, at least a part of the mesh structure 5 needs to be exposed to the adhesive layer 4 side. In FIG. 2, the portion exposed in the adhesive layer of the network structure is indicated by A.

  As described above, the composite body 1 according to the embodiment of the present invention is formed by impregnating the network structure 5 with at least a part of the adhesive. The impregnation of the adhesive is mainly performed by the first member. 2 can be performed through the exposed portion A of the network structure exposed to the adhesive layer side. The area ratio of the exposed portion A (that is, the total area of the exposed portion A of the mesh structure with respect to the entire bonding area of the first member 2) is the adhesion between the resin material of the base material of the first member and the adhesive layer 4 It is appropriately selected depending on the adhesiveness with the material. For example, in the case of a hard-to-adhere fluororesin-based material and an epoxy-based adhesive, sufficient adhesive strength between the fluororesin-based material of the first member other than the exposed portion A and the epoxy-based adhesive cannot be expected. It is desirable to select a large area for the exposed portion A of the mesh structure. As a measure for increasing the area of the exposed portion A, for example, increasing the number of single fibers to increase the diameter of the fiber bundle, decreasing the mesh (pitch) surrounded by the fiber bundle, and increasing the fiber density. Can be mentioned. Generally, the area ratio of the exposed portion A is 30% to 70%, preferably 50 to 60%. By being within such an area ratio range, both the bonding strength between the first member and the second member and the absorbability of the adhesive are particularly preferred values.

  As other preferable specific examples of the first member other than the embodiment specifically shown in FIG. 1, a mesh structure is embedded on the joint surface side of the first member with the second member, Another network structure is further provided on the entire surface or a partial region of the first member (that is, a plurality of network structures are disposed in one first member) ( (Not shown). Thus, when it is difficult to form a mesh structure only on the joint surface of the first member having a complicated shape with the second member, or with a member other than the second member (for example, the third member) It can also cope with the need for adhesion. The mesh structure of the first member is provided only on the joint surface with other members unless it is unavoidable.

  In particular, according to the composite 1 according to the embodiment of the present invention shown in FIGS. 1 and 2, between the second member 3 and the region 2 ″ where the network structure of the first member 2 does not exist, Due to the interposition of the network structure 5 and the resin material 2 ', the difference in material properties between the second member 3 and the region 3' where the network structure of the first member 2 does not exist is temporarily large. However, the problem based on the difference can be prevented or alleviated or suppressed, for example, the second member 3 is a metal material, and the first member 2 is a resin material (particularly, a fluorine resin). According to the preferred composite 1 according to the embodiment of the present invention, the metal material and the resin material are embedded between the metal material and the resin material even though the difference in thermal expansion coefficient is large. Since the network structure 5 is present, the heat between the materials is Thermal stress generated by the difference in expansion coefficient can be effectively suppressed.

  Further, the thickness of the network structure 5 (the state after impregnation with the adhesive) is the diameter of the single fiber of the network structure to be used, the diameter of the fiber bundle, or the network structure as the first member. The thickness is adequately selected in consideration of the thickness that is sufficiently retained and the depth that the adhesive of the adhesive layer can impregnate. The diameter is preferably 1 to 10 times, particularly preferably 2 to 3 times the diameter of the single fiber or the fiber bundle.

  Examples of the network structure of the composite according to the embodiment of the present invention include a nonwoven fabric sheet in which single fibers or fiber bundles are intertwined without being woven, and a woven cloth made by combining with the background. Among these, a woven cloth made in combination with the background is more preferable in terms of the strength, regularity, ease of handling, and impregnating property of the adhesive (see FIGS. 1 and 2).

  As shown in FIG. 1 and FIG. 2, the network structure 5 is a woven fabric made of an intersection of a first fiber bundle 5a made of a plurality of fibers and a second fiber bundle 5b made of a plurality of fibers. In this case, the first fiber bundle 5a is preferably a single fiber having an average diameter of 1 to 100 μm, particularly preferably 5 to 10 μm, preferably 3 to 100, particularly preferably 10 to 20 per fiber. Bundles are preferred. Similarly to the first fiber bundle 2a, the second fiber bundle 5b preferably has a single fiber having an average diameter of 1 to 100 μm, particularly preferably 5 to 10 μm, preferably 3 to 100, Particularly preferably, 10 to 20 bundles are bundled. Here, the first fiber bundle 5a and the second fiber bundle 5b may be the same or different with respect to the material, the average diameter of the single fibers, or the number of single fibers per bundle.

  Further, the cross-sectional shape of the single fiber or fiber bundle is not limited to a circular shape, and is arbitrary such as a polygonal shape or a star shape. Moreover, a hollow fiber may be sufficient.

  Then, the network structure 5 embedded in the first member 2 is such that at least a part of the adhesive in the adhesive layer 4 is impregnated in the network structure 5 when the adhesive is brought into contact. The surface (or fiber cross section) of at least a part of one fiber bundle 5 a and / or second fiber bundle 5 b is exposed on the surface of the first member 2. Here, “exposed” means being exposed to the surface of the first member so as to be in contact with the adhesive. Therefore, it is not limited only to the case of protruding from the surface of the first member.

  For example, the network structure 5 is impregnated with the adhesive by bringing the adhesive into contact with an uncontacted or unfilled region of the resin material 2 ′ in the first fiber bundle 5a and / or the second fiber bundle 5b. Can be done by impregnation. Examples of such a non-contact or unfilled region of the resin material 2 ′ in the first fiber bundle 5a and / or the second fiber bundle 5b include the first fiber bundle 5a composed of a plurality of fibers and A void portion (for example, a void portion existing between the respective fibers in the fiber bundle) existing in the fiber bundle of the second fiber bundle 5b composed of a plurality of fibers can be exemplified.

  Further, when the fiber material constituting the network structure itself is an adhesive-absorbing material (for example, a material having fine continuous or discontinuous voids in the fiber body), etc. Fine continuous or discontinuous voids in the fiber body.

<< Adhesives >>
The composite adhesive according to the embodiment of the present invention has a good adhesion to the network structure 2 and the second member 3 and can be impregnated into the network structure 5. It can be appropriately selected and used.

  Here, what has a favorable adhesive effect with respect to the network structure 2 includes what has a favorable adhesive effect with respect to the network structure and the resin material 2 'with which the mesh of this network structure was filled. Is done.

  And in the preferable specific example of the adhesive material of the embodiment of the present invention, for example, it has a good adhesive action only on the network structure, but the adhesiveness is not sufficient for the resin material 2 ′ or the adhesive. Also included are materials in which no material is observed. This is because even if the adhesive 4 is not sufficiently adhesive to the resin material 2 ′, the adhesive 4 ′ impregnated in the mesh structure 5 exists at the interface with the second member 3. Since the adhesive layer 4 and the continuous phase are obtained, a strong adhesive strength is obtained, and the network structure 5 is embedded in the first member 2. This is because sufficient bonding strength is realized.

  And according to the preferable composite 1 by embodiment of this invention, as above-mentioned, the resin material of the 2nd member 3 and the 1st member 2 is obtained by interposing the network structure 5 and the resin material 2 '. Even if there is a large difference in material properties during this period, problems based on the difference are effectively prevented or suppressed. For this reason as well, for example, when the thermal history or external stress is applied, sufficient bonding strength as a whole of the composite 1 is realized more effectively.

  In the composite according to the embodiment of the present invention, in particular, the first member includes a fluorine-based resin material, the network structure includes glass fibers, and the second member is made of iron or stainless steel. Preferable specific examples of the adhesive in this case include phenol-based, epoxy-based, urea-based, cyanoacryl-based, vinyl-based, and silicone rubber-based adhesives. In particular, a thermosetting adhesive is particularly preferable from the viewpoints of improving the bonding strength of the composite 1 as a whole, improving the mechanical strength, improving the thermal strength, and the like.

<Method for producing composite>
The composite according to the embodiment of the present invention can be preferably produced by a method for producing a composite comprising the following steps (A) and (B).

Step (A): Filling the mesh material with a resin material and depositing the resin material on the mesh structure to form a first member having a surface with at least a part of the mesh structure exposed. Step (B): Bonding the surface of at least a part of the network structure of the first member formed in the step (A) with the surface of the second member. And joining the first member and the second member while impregnating the network structure with the adhesive. Here, the first member and the second member Details of the resin material, the mesh structure, the adhesive and the like are as described above.

The preferable aspect of the step (A) in the method for producing a composite according to the embodiment of the present invention includes, for example, the following step (A1) and step (A2).
Step (A1): Filling the network of the network structure with the powdery resin material, depositing the powdered resin material on the network structure, and then adding the powdered resin material to the network structure. Heating to a temperature equal to or higher than the melting temperature to form a first member having a surface on which at least a part of the network structure is exposed.

  Step (A2): a surface in which at least a part of the network structure is exposed by filling the network resin of the network structure with a molten resin material and depositing the molten resin material on the network structure Forming a first member having:

  Here, in the step (A1), the powdery resin material has an average particle diameter smaller than the mesh of the network structure material, particularly 1/1000 to 1/10 of the minimum width of each network, especially 1 That which is / 100 to 1/200 is preferable. Thus, by using resin particles sufficiently smaller than the mesh of the mesh structure material, it becomes easy to reliably and densely fill the resin material in each mesh.

  In this step (A1), preferably, for example, a mesh structure is first installed on the bottom surface of a sealable container such as a mold, and a powdery resin material (and, if necessary, this powder In addition to the body-shaped resin material, various fillers as described above are introduced, and the mesh structure is filled with the powder resin material, and the mesh structure is filled with the powder resin material. The first member can be obtained by depositing and then applying heat or pressure from the outside simultaneously or sequentially.

  The introduction of the powdered resin material and various fillers used as necessary can be performed once or divided into a plurality of times. Here, when the introduction of the powdery resin material and the filler is performed a plurality of times, the resin material and / or the filler introduced at each time are different even if they are the same with respect to the material, particle size, introduction amount, etc. It may be. Heating and pressure application from the outside can be performed once, and can be performed a plurality of times under the same conditions or different conditions.

  Further, when a plurality of network structures are provided in the first member, introduction steps and methods of the network structure and the resin material can be appropriately employed so that the desired first member is obtained. . Moreover, the target 1st member can be obtained by preparing several members from which a desired 1st member is obtained, and uniting these several members.

  According to such a step (A), the first member in which the network structure is embedded in the first member and at least a part of the network structure is exposed to the adhesive layer side is easily formed. Can do. According to the step (A1) described as a particularly preferred embodiment of the step (A), at least a part of the first fiber bundle 5a and the second fiber bundle 5b constituting the network structure 5 is a resin material. The first member exposed without being covered with can be easily obtained.

  The step (B) in the method for producing a composite according to an embodiment of the present invention includes a surface on which at least a part of the network structure of the first member formed in the step (A) is exposed, A step of bringing the surface of the second member into contact with each other through an adhesive and joining the first member and the second member while impregnating the network structure with the adhesive. is there.

  In this step (B), (a) the network structure 5 is impregnated with the adhesive on the surface of the first member where the network structure is exposed and the surface of the second member. it can. Here, the impregnation of the adhesive into the network structure 5 is performed by coating the adhesive on the surface to be joined of the first member where at least a part of the network structure is exposed, This can be done by simply leaving the contacted surface (the contacted surface of this second member can be pre-coated with an adhesive) left at normal temperature and pressure. .

  In the method for producing a composite according to an embodiment of the present invention, (b) applying a pressurized adhesive to the bonded surface of the first member where at least a part of the network structure is exposed, A method of press-fitting an adhesive material to a deep part of the network structure, and then superimposing a contact surface of the second member; (c) a bonded surface of the first member where at least a part of the network structure is exposed; After the adhesive is applied, the gas is placed in a reduced pressure atmosphere, and the gas present inside the network structure (eg, typically the voids between the fibers inside the fiber bundle) is removed by suction. , A method of replacing the gas and the adhesive, and (d) applying an adhesive to the bonded surface of the first member where at least a part of the network structure is exposed, Place the whole of the contacted surfaces in a pressurized atmosphere and press the adhesive into the mesh structure. Method, (e) the entire product in which an adhesive is applied to the surface to be joined of the first member where at least a part of the mesh structure is exposed, and the surface to be contacted of the second member is superimposed on this Can be installed in a reduced-pressure atmosphere, and the gas existing inside the mesh structure is removed by suction, and the gas and the adhesive are replaced with each other. Among these, the pressurization method has a short process time, but has a drawback that it is difficult to adopt it in a product having a complicated shape. On the other hand, the decompression method has a long process time, but can be applied to a product having a complicated shape, and has an advantage that the gas existing in the network structure can be sucked and removed, and the gas and the adhesive can be surely replaced.

  In each of the above methods (a) to (f), a solvent or the like can be added to the adhesive. In this case, for example, the coating property and permeability of the adhesive can be further improved, and the impregnation of the adhesive can be performed more efficiently and effectively.

  The manufacturing method of the composite_body | complex by embodiment of this invention comprises the process (A) and process (B) which were mentioned above. Such a method for producing a composite according to an embodiment of the present invention is not limited to only the step (A) and the step (B), and in addition to the step (A) and the step (B). Other processes or processes other than the processes (A) and (B) can be performed as necessary. Therefore, the manufacturing method of the composite according to the embodiment of the present invention including the step (A) and the step (B) includes other steps or treatments other than the steps (A) and (B). Is also included.

  Representative examples of other steps or treatments that can be performed as necessary include, for example, a composite of the first member and the second member obtained by the step (B). Step (C) subjected to pressure treatment and / or heat treatment, and second step of the first member formed in step (A) after step (A) and before step (B) The surface treatment (A3) performed with respect to the surface of the joint surface side with a member can be mentioned.

  For example, according to the method for manufacturing a composite according to an embodiment of the present invention in which the above step (C) is performed, mechanical properties (for example, strength, flexural rigidity, durability, It is possible to manufacture the composite 1 with improved impact resistance and the like and further optimized thermal characteristics (for example, heat resistance and thermal expansion characteristics).

  Moreover, according to the manufacturing method of the composite_body | complex by embodiment of this invention which performs said process (A3), when a roughening process is employ | adopted as surface treatment of a process (A3), for example, it is 1st member. It is possible to achieve an improvement in the adhesive impregnation efficiency and an improvement in the bonding strength due to an increase in the exposed area of the network structure on the surface, an exposure of the fiber fracture surface, and the like.

<Use of complex>
The composite according to the embodiment of the present invention can be used for various applications.
As a particularly preferable usage or usage of the composite according to the embodiment of the present invention, for example, a bearing sliding material formed by the first member and a bearing base material formed by the second member are described. And a composite bearing member.

  Here, the first member, the second member, and the specific contents thereof included in the composite bearing member according to the embodiment of the present invention are described in <Composite>, << First Member and second member >>, << network structure >>, << adhesive material >>, <Production method of composite>, etc., and [Example] and drawings, etc. Is also described. Therefore, the composite bearing member according to the embodiment of the present invention is supported also by the description of the above-mentioned part of the present specification and the drawings.

  Hereinafter, among the composite bearing members according to the embodiments of the present invention, a particularly preferable specific example will be described with reference to the drawings as necessary.

  FIG. 1 is a cross-sectional view of a preferred specific example of a composite bearing member according to an embodiment of the present invention, and FIG. 2 is a Z portion surrounded by a dotted line of the composite bearing member according to the embodiment of the present invention in FIG. It is the elements on larger scale shown.

  3 is a top view showing an outline of a sliding bearing formed by combining the composite bearing member 10 according to the embodiment of the present invention shown in FIG. 1, and FIG. 4 is another view of the composite bearing member according to the embodiment of the present invention. It is a perspective view which shows one preferable specific example.

  A composite bearing member 10 according to the embodiment of the present invention shown in FIG. 1 includes a bearing sliding material formed by a first member 2 and a bearing base material formed by a second member 3. is there.

  The composite bearing member 10 according to the embodiment of the present invention shown in the cross-sectional view of FIG. 1 is a composite bearing member that can be used for a bearing classified as a thrust sliding bearing as shown in FIG. This is a composite bearing member that can be used for a bearing classified as a journal sliding bearing as shown in FIG.

  Here, FIG. 3 shows a sliding bearing employing six composite bearing members 10 according to an embodiment of the present invention, and FIG. 4 uses two composite bearing members 10 according to an embodiment of the present invention. Although the sliding bearing by this is described, the composite bearing member by embodiment of this invention can provide a sliding bearing by using one or two or more same or different.

  If the cross-sectional structure of the composite bearing member 10 according to the embodiment of the present invention is as shown in FIG. 1, the outer shape, size, thickness, and other structures and usage forms are limited. There is no.

  The following examples show in more detail some particularly preferred representative examples of the composites according to the above-described embodiments. Therefore, the present invention is not limited to the technical scope specifically disclosed in the embodiments shown below.

<Example 1>
A glass cloth in which a fiber bundle composed of 10 single fibers having a thickness of 0.2 mm and an average fiber diameter of 10 μm is flatly woven is installed in a mold, and 12 volumes of carbon fibers (average fiber length of 3 mm, average fiber diameter of 10 μm) are placed. %, PTFE was mixed under compression at a molding pressure of 50 MPa, and PTFE was fired at 370 ° C. for 2 hours to produce a first member. The ratio of the exposed area of the glass fiber on the surface of the first member was about 60%.

  Next, an epoxy adhesive is applied to the entire surface of the second member made of S45C and the surface of the first member where the glass fibers are exposed, and the second member and the adhesive surface of the first member are overlapped. It was.

  Next, the overlapped second member and first member were sealed with rubber, vacuum sucked, and cured while impregnating the fiber gap of the fiber bundle with the adhesive.

  A shear test piece was collected from the obtained composite and subjected to a shear test. As a result, the shear strength at the joint interface was 20 MPa.

<Comparative Example 1>
The 1st member and the 2nd member which consist of PTFE containing carbon fiber were joined on the completely same conditions as Example 1 except not using glass cloth.

  In the obtained composite, as in Example 1, the back surface of the first member did not warp, but isolation occurred at one end of the joined body. Since the bending elastic modulus of the first member of S45C is high, no warp is generated, and it is considered that the residual stress is released by peeling off a part of the end face with weak adhesive strength.

  A shear test piece was collected from the remaining part of the joined body that was not isolated in the same manner as in Example 1 and the shear test was performed in the same manner. As a result, the shear strength at the joint interface was 5 MPa.

<Examples 2-3 and Comparative Examples 2-3>
A composite was produced in the same manner as in Example 1 except that the glass fiber, the first member, the second member, the adhesive, and the like of Example 1 were changed as shown in Table 1. And the shear test was done like Example 1. FIG. The results are as shown in Table 1.

  The composite body, the manufacturing method thereof, and the composite bearing member according to the embodiment of the present invention as described above have many advantages as described below.

(A) A composite having high bonding strength between members made of different materials can be obtained. From this, a highly durable composite in which peeling and missing of the members are prevented can be obtained.

(B) Generation of thermal stress due to temperature change is effectively prevented even in a composite body in which members having a large difference in thermal expansion coefficient are joined together. Thereby, peeling between members, reduction in bonding strength, shape change of the composite, warpage, and the like are suppressed.

(C) An excellent composite having the above (a) and (b) can be easily produced at low cost.

(D) A composite using a resin material member, which has conventionally been difficult to apply, can be easily obtained at low cost. Therefore, the use application of the composite is expanded. Further, even in applications that have been applied conventionally, it is possible to obtain performance superior to that of the prior art.

(E) For example, when used as a sliding bearing member,
-Since the generation of thermal stress is suppressed, deformation and warpage due to temperature changes are prevented. Thereby, the clearance between the sliding member and the rotating shaft can be precisely controlled. Further, it is possible to reduce the vibration of the rotating shaft, the abnormal wear of the sliding surface, the rotational resistance, the heat generation amount, the optimization of the lubricant pressure distribution, and the further improvement of the durability. In addition, it is easy to increase the size of the sliding bearing member. Moreover, the weight reduction of the sliding bearing member is easy.
-By selecting an optimal resin material, etc., an optimized bearing member can be provided in accordance with the specific application and purpose of the sliding bearing. For example, when a resin material (preferably PTFE, for example) excellent in frictional resistance, electrical insulation, and combustion resistance is used as a sliding bearing sliding material, it cannot be obtained with conventional metal materials or other resin materials. Thus, it is possible to provide a bearing member having such excellent performances.
・ By selecting resin material, it is easy to adopt water lubrication instead of oil lubrication, so the environmental load can be reduced.
・ Can cope with increased bearing surface pressure and sliding speed.

DESCRIPTION OF SYMBOLS 1 Composite body 2 1st member 2 'Resin material filled into the network 3 Second member 4 Adhesive layer 4' Impregnated adhesive material 5 Network structure 5a First fiber bundle 5b Second fiber bundle 10 Composite Bearing member

Claims (2)

An adhesive layer including a first member comprising a resin material, a second member comprising a metal material, and an adhesive disposed between the first member and the second member a method of manufacturing a composite body formed by including bets, characterized in that it comprises the following steps (A1) and the step (B), the manufacturing method of the composite.
Step ( A1 ): Filling the network of the network structure with the powdery resin material, depositing the powdered resin material on the network structure, and then adding the powdered resin material to the network structure. Heating to a temperature equal to or higher than the melting temperature, and forming a first member having a surface in which at least a part of the network structure is exposed ;
Step (B): The surface where at least a part of the network structure of the first member formed in the step ( A1 ) is exposed and the surface of the second member are bonded via an adhesive. The step of bringing the first member and the second member into contact with each other while making the mesh structure impregnated with the adhesive. The method for producing a composite according to claim 1 , wherein in the step (B), the network structure is impregnated with at least a part of the adhesive by a pressure impregnation method or a vacuum suction impregnation method.

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