WO2012074083A1 - 炭素繊維複合材料の接合部材の製造方法 - Google Patents
炭素繊維複合材料の接合部材の製造方法 Download PDFInfo
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- WO2012074083A1 WO2012074083A1 PCT/JP2011/077886 JP2011077886W WO2012074083A1 WO 2012074083 A1 WO2012074083 A1 WO 2012074083A1 JP 2011077886 W JP2011077886 W JP 2011077886W WO 2012074083 A1 WO2012074083 A1 WO 2012074083A1
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- WIPO (PCT)
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- carbon fiber
- metal
- composite material
- fiber composite
- thermoplastic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/44—Joining a heated non plastics element to a plastics element
- B29C65/46—Joining a heated non plastics element to a plastics element heated by induction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
- B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Definitions
- the present invention relates to a method for manufacturing a joining member of a carbon fiber composite material and a metal.
- Carbon fiber composite materials are used as extremely excellent materials having high specific strength and specific rigidity.
- mechanical joining such as bolts, nuts, rivets, etc.
- joining using adhesives are used.
- Mechanical joints with bolts and nuts generally increase in weight.
- In joining using an adhesive it is generally necessary to secure an adhesive layer with a certain thickness in order to ensure strength. Particularly when joining a large member, a considerable amount of adhesive is required, and the result was obtained.
- thermoplastic carbon fiber composite material is a matrix resin in which materials are joined together by welding within a range in which the resin is compatible. It can be expected to have the same bonding strength.
- thermoplastic carbon fiber composite material is often difficult to join to a metal by welding. In order to weld the thermoplastic carbon fiber composite material to the metal, it is necessary that the thermoplastic resin itself used as the matrix can be welded to the metal.
- Patent Document 1 It is described that the metal and the resin can be joined by welding by the anchor effect by injection-molding the resin into an aluminum material having a fine surface as in Patent Document 1.
- Patent Documents 2 and 3 describe that a metal surface is treated to bond a resin and a metal.
- Patent Document 4 describes a method in which an intermediate resin layer having an affinity for metal and both is disposed and bonded. JP 2003-103563 A Japanese Patent Publication No. 5-51671 WO2009 / 157445 pamphlet JP 2006-297927 A
- An object of the present invention is a method for producing a bonded member of a carbon fiber composite material using a resin as a matrix and a metal, and in particular, a carbon fiber composite using a thermoplastic resin as a matrix, characterized in that bonding and molding can be performed simultaneously. It is providing the manufacturing method of the joining member of material and a metal.
- the advantage of the thermoplastic carbon fiber composite material is that it can be easily injected or press-molded in a very short time as compared with the thermosetting carbon fiber composite material because the shape easily changes when heat is applied.
- thermoplastic carbon fiber composite material with a thermoplastic resin as a matrix
- the thermoplastic carbon fiber composite material does not allow the thermoplastic resin to bleed into the carbon fiber bundle.
- the resin is not necessarily homogeneously present on the surface of the material because it is in the “collapsed” state, and because there is a “deficient” portion of the resin, sufficient bonding strength may not be exhibited or the bonding strength There was a concern that it would vary greatly. Moreover, since carbon fiber causes so-called electric corrosion on the metal, it has been a cause of corroding the metal by directly touching the metal in the portion where the resin is deficient.
- the present inventors formed a layer containing a triazine thiol derivative on the metal surface, and between the triazine thiol derivative containing layer and the thermoplastic carbon fiber composite material.
- a thermoplastic resin layer By providing a thermoplastic resin layer and melting the thermoplastic resin layer to join the metal and the carbon fiber composite material, it is found that the metal and the thermoplastic carbon fiber composite material can be joined firmly and stably.
- the present invention has been reached.
- the configuration of the present invention is shown below. 1.
- a method for producing a joining member of a carbon fiber composite material using a thermoplastic resin matrix and a metal wherein a layer containing a triazine thiol derivative is formed on a metal surface, and the layer containing the triazine thiol derivative and the carbon fiber composite material is formed.
- the manufacturing method of the joining member by providing a thermoplastic resin layer and joining a metal and a carbon fiber composite material by melting this thermoplastic resin layer. 2.
- 3. The method for producing a joining member according to any one of items 1 to 2, wherein the thermoplastic resin layer has a thickness of 5 ⁇ m or more and 5 mm or less. 4). 4.
- a method for producing a metal composite molded body in which a carbon fiber composite material containing a thermoplastic resin as a matrix and a metal are bonded, wherein a layer containing a triazine thiol derivative is provided on the metal surface, and the triazine thiol derivative-containing layer and the carbon fiber A method for producing a metal composite molded article, wherein a thermoplastic resin layer provided between the composite material and the composite material is melted to join and form the metal and the carbon fiber composite material simultaneously or continuously.
- thermoplastic carbon fiber composite material and the metal can be obtained firmly and stably by a simple method. Further, by joining the thermoplastic carbon fiber composite material and the metal via the thermoplastic resin, it is possible to simultaneously prevent electric corrosion caused by the carbon fiber.
- the joining member and the molding step can be performed simultaneously or continuously to obtain a joining member of the carbon fiber composite material and the metal in a short time and with few steps.
- FIG. 1 is a schematic view showing an aspect of the joining member of the present invention.
- FIG. 2 is a schematic view showing the shape of the molded body obtained in Example 5.
- FIG. 3 is a schematic view showing the shape of the metal composite molded body obtained in Example 5.
- a circular SPCC plate is indicated by oblique lines.
- the present invention is a method for producing a joining member of a carbon fiber composite material using a thermoplastic resin as a matrix and a metal.
- One embodiment of the joining member of the present invention is shown in FIG. 1, and an embodiment of the present invention will be described below.
- Thermoplastic carbon fiber composite material is a material containing a carbon fiber with a thermoplastic resin as a matrix.
- the carbon fiber composite material preferably contains 50 to 1000 parts by weight of thermoplastic resin per 100 parts by weight of carbon fiber. More preferably, it is 50 to 400 parts by weight of the thermoplastic resin with respect to 100 parts by weight of the carbon fiber, and further preferably 50 to 100 parts by weight of the thermoplastic resin with respect to 100 parts by weight of the carbon fiber.
- thermoplastic resin is less than 50 parts by weight with respect to 100 parts by weight of carbon fibers, dry carbon fibers may increase. On the other hand, if the amount exceeds 1000 parts by weight, the amount of carbon fiber may be too small to be suitable as a structural material.
- thermoplastic resins polyamide, polycarbonate, polyoxymethylene, polyphenylene sulfide, polyphenylene ether, modified polyphenylene ether, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyethylene, polypropylene, polystyrene, polymethyl methacrylate, AS resin, ABS resin, etc. Is mentioned.
- PA polyamide
- PA6 also referred to as polycaproamide or polycaprolactam, more precisely poly ⁇ -caprolactam
- PA26 Polyethylene adipamide
- PA46 polytetramethylene adipamide
- PA66 polyhexamethylene adipamide
- PA69 polyhexamethylene azepamide
- PA610 polyhexamethylene sebacamide
- PA611 polyhexa) Methyleneundecanamide
- PA612 polyhexamethylene dodecanamide
- PA11 polyundecanamide
- PA12 polydodecanamide
- PA1212 polydodecanethylene dodecanamide
- PA6T polyhexamethylene terephthalamide
- the form of the carbon fiber in the thermoplastic carbon fiber composite material is not particularly limited, and may be a woven fabric made of continuous fibers or a fiber arranged in one direction.
- the fibers When the fibers are arranged in one direction, they can be laminated in multiple layers by changing the direction of the layers, for example, alternately. Moreover, it is preferable to arrange
- discontinuous carbon fibers may be dispersed and arranged so as to overlap each other. In this case, the fiber length is preferably 5 mm or more and 100 mm or less.
- the carbon fibers may be present in a carbon fiber bundle state in the composite material, and it is also preferable that the carbon fiber bundle and the single yarn state are mixed. It is also preferable that the discontinuous carbon fibers are two-dimensionally arranged randomly in the composite material.
- the thermoplastic carbon fiber composite material long fiber pellets, that is, pellets obtained by adjusting the melted resin to a predetermined viscosity, impregnating the carbon fibers of continuous fibers and then cutting, are used with an injection molding machine. You may shape
- the element constituting the metal is mainly iron or aluminum.
- the main is 90% by weight or more.
- iron such as SS material, SPCC material, and high tensile material, stainless steel such as SUS304 and 316, aluminum in 1000 to 700 series, and alloys thereof are preferably used.
- the shape of the metal to be joined is not particularly limited and can be appropriately selected according to the joining member to be obtained.
- Triazinethiol derivative-containing layer A layer containing a triazine thiol derivative is formed on the surfaces where the metal is to be bonded, and is used for bonding.
- the triazine thiol derivative-containing layer does not need to be formed on the entire surface where the metal is to be joined, and the thickness is not particularly limited as long as the adhesiveness can be secured.
- Preferred examples of the triazine thiol derivative include a dehydrated silanol-containing triazine thiol derivative that can be expected to be chemically bonded to a metal, or an alkoxysilane-containing triazine thiol derivative.
- R 2 is either of, -CH 2 CH 2 -, - CH 2 CH 2 CH 2 -, - CH 2 CH 2 CH 2 CH 2 CH 2 -, - CH 2 CH 2 SCH 2 CH 2 —, —CH 2 CH 2 NHCH 2 CH 2 CH 2 —
- R 3 is — (CH 2 CH 2 ) 2 CHOCONHCH 2 CH 2 CH 2 —, or — (CH 2 CH 2 ) 2 N—CH 2 CH 2 CH 2 —. In this case, N and R 3 form a cyclic structure.
- X in the formula is CH 3 —, C 2 H 5 —, n—C 3 H 7 —, i—C 3 H 7 —, n—C 4 H 9. -, i-C 4 H 9 -, t-C 4 H 9 -, C 6 H 5 - is any one of, Y is, CH 3 O-, C 2 H 5 O-, n-C 3 H 7 O-, i-C 3 H 7 O-, n-C 4 H 9 O-, i-C 4 H 9 O-, t-C 4 H 9 O-, C 6 H 5 O- in there either
- n is any number of 1, 2, and 3 and M is —H or an alkali metal.
- R 4 represents —S—, —O—, —NHCH 2 C 6 H 4 O—, —NHC 6 H 4 O—, —NHC 6 H 3 (Cl) O—, — NHCH 2 C 6 H 3 (NO 2) O -, - NHC 6 H 3 (NO 2) O -, - NHC 6 H 3 (CN) O -, - NHC 6 H 2 (NO 2) 2 O -, - NHC 6 H 3 (COOCH 3 ) O—, —NHC 10 H 6 O—, —NHC 10 H 5 (NO 2 ) O—, —NHC 10 H 4 (NO 2 ) 2 O—, —NHC 6 H 4 S -, - NHC 6 H 3 ( Cl) S -, - NHCH 2 C 6 H 3 (NO 2) S -, - NHC 6 H 3 (NO 2) S -, - NHC 6 H 3 (CN) S-, -NHC
- the triazine thiol derivative used in the present invention specifically, the following triethoxysilylpropylaminotriazine thiol monosodium, which is an alkoxysilane-containing triazine thiol derivative exhibiting excellent effects Is preferable.
- a method for forming a triazine thiol derivative-containing layer the method described in the pamphlet of WO2009 / 157445 is preferably exemplified. Specifically, after dipping in an alkoxysilane-containing triazine thiol, a water ethanol solution, a heating treatment is performed, Examples include a method of completing the reaction and drying.
- the triazine thiol derivative-containing layer may contain a substance other than the triazine thiol derivative as long as the object of the present invention is not impaired.
- a metal compound layer such as hydroxide, carboxylate, phosphate, sulfate, etc. is included between the triazine thiol derivative-containing layer and the metal because further improvement in bonding strength can be expected.
- a method for forming the metal compound layer a method described in WO2009 / 157445 is preferably exemplified, and specifically, a method of immersing in an acid such as hydrochloric acid, sulfuric acid, phosphoric acid and the like can be mentioned.
- thermoplastic resin layer In the present invention, a thermoplastic resin layer is provided between a thermoplastic carbon fiber composite material and a triazine thiol derivative-containing layer provided on the metal, and the metal and the carbon fiber composite material are joined by melting the thermoplastic resin layer. It is characterized by making it.
- the thermoplastic resin layer does not need to be provided over the entire surfaces to be joined, as long as adhesion can be ensured.
- the thermoplastic resin layer is arranged in the form of a film, woven fabric, non-woven fabric, powder, etc., and heat and pressure are applied to melt the thermoplastic resin to such an extent that the fibers of the thermoplastic carbon fiber composite material can be impregnated. The metal and the carbon fiber composite material are joined.
- the thermoplastic resin constituting the thermoplastic resin layer is preferably a resin that is compatible with the matrix resin of the thermoplastic carbon fiber composite material, preferably the same resin as the matrix resin constituting the thermoplastic carbon fiber composite material. It is done.
- the thermoplastic resin constituting the thermoplastic resin layer and the thermoplastic resin constituting the thermoplastic carbon fiber composite material are more preferably the same type of resin.
- the thing preferable as a thermoplastic resin which comprises a thermoplastic resin layer is the same as that mentioned above about the thermoplastic resin which comprises a thermoplastic carbon fiber composite material.
- the thickness of the thermoplastic resin layer is 5, preferably from ⁇ m to 5 mm, more preferably from 20 ⁇ m to 4 mm, and further preferably from 40 ⁇ m to 3 mm.
- the thickness of the resin layer is less than 5 ⁇ m, the resin necessary for welding is insufficient and sufficient strength may not be obtained.
- the resin layer exceeds 5 mm, when a shearing load is applied to both, a moment may act on the joint surface, and the strength may decrease as a whole.
- thermoplastic resin layer is provided between the triazine thiol derivative-containing layer on the metal surface and the carbon fiber composite material, the thermoplastic resin layer is melted, and the metal and the carbon fiber composite material are joined.
- a method for welding such a thermoplastic resin layer a method by heating and pressing is preferable.
- heat transfer or radiation by an external heater is preferable.
- a method of heating the metal to be bonded by electromagnetic induction is extremely preferable because the bonding surface with the resin can be directly heated. It is preferable to match the timing of heating the metal when molding the heated resin, in order to maximize the welding strength.
- the metal is heated after the molding is performed, and then re-pressurized to join.
- the heating temperature is preferably not less than the melting temperature and not more than the decomposition temperature of the thermoplastic resin constituting the thermoplastic resin layer, more preferably not less than the melting temperature + 15 ° C. and the decomposition temperature ⁇ 30 ° C.
- the pressurizing condition it is preferable to apply a pressure of 0.01 to 2 MPa, preferably 0.02 to 1.5 MPa, more preferably 0.05 to 1 MPa to the welding surface. If the pressure is less than 0.01 MPa, a good bonding force may not be obtained, and the composite material may spring back during heating and the shape may not be maintained, resulting in a decrease in material strength.
- Thermoplastic resin layer disposed between the triazine thiol derivative-containing layer and the carbon fiber composite material may be formed of the resin layer adhering to the previously pre either side.
- a thermoplastic resin layer it is preferable to adhere and arrange the triazine thiol derivative-containing layer on the side of the metal layer formed on the surface.
- a thermoplastic resin layer and a carbon fiber composite material can be superimposed on a metal layer with a triazine thiol derivative-containing layer, and the whole can be thermocompression bonded at the same time to produce a joining member.
- the temperature of the process of forming a thermoplastic resin layer it is more preferable that it is more than melting temperature +15 degreeC of a thermoplastic resin, and decomposition temperature-30 degreeC.
- the thermoplastic resin layer can be disposed in the form of a film, a woven fabric, a nonwoven fabric, or a sheet, and can be thermocompression bonded or the molten resin can be thinly attached by injection molding.
- the temperature of the metal when the hot-melt thermoplastic resin is brought into contact with each other is preferably the melting temperature of the thermoplastic resin + 15 ° C. or more and the decomposition temperature ⁇ 30 ° C. If the temperature of the metal is lower than the range, the resin may not be familiar with the surface.
- the resin may be decomposed.
- the time for maintaining such temperature should be as short as possible as long as the time for essential bonding between the thermoplastic carbon fiber composite material and the metal can be secured.
- the affinity of the triazine thiol derivative-containing layer on the metal surface is important.
- the triazine thiol derivative-containing layer may be altered by high temperatures, so the temperature is increased for a long time. That is not preferable.
- the joining time at 275 ° C. is preferably about 10 minutes or less.
- Carbon fiber composite materials with a thermosetting resin matrix have been forced to use adhesives or to form in an autoclave for a long time after inserting the metal into the prepreg when joining with metal. . Since the present invention uses a carbon fiber composite material having a thermoplastic resin as a matrix, metal bonding can be performed simultaneously with or continuously with a molding process such as pressing. That is, the present invention includes a method for producing a metal composite molded body in which a carbon fiber composite material and a metal are bonded, wherein molding and bonding are simultaneously performed in a mold.
- the present invention relates to a method for producing a metal composite molded body in which a carbon fiber composite material containing a thermoplastic resin as a matrix and a metal are bonded, wherein a layer containing a triazine thiol derivative is provided on the metal surface, and the triazine thiol derivative-containing layer is provided.
- a metal composite molded body characterized in that a thermoplastic resin layer provided between a carbon fiber composite material and a carbon fiber composite material is melted to join or form the metal and the carbon fiber composite material simultaneously or continuously. It is a manufacturing method.
- continuous joining and molding of metal and carbon fiber composite material means that after joining the metal and carbon fiber composite material, It includes not only forming but also continuously bonding metals after forming the carbon fiber composite material into a desired shape.
- the bonding strength can be evaluated by a tensile test, but the upper limit of the bonding strength is substantially about 50 MPa.
- the joining member and metal composite molded body obtained in the present invention can be suitably used as a structural member that requires strength.
- the structural member include parts constituting a moving body such as an automobile.
- Carbon fiber (Tenax STS40-24KS manufactured by Toho Tenax, fiber diameter 7 ⁇ mm, tensile strength 4000MPa), nylon 6 film (Unitika emblem ON25 ⁇ m) (Thickness) is laminated with 64 layers alternately at 0 degrees and 90 degrees in the fiber direction (64 layers of carbon fibers and 65 layers of nylon), heated and compressed at 260 ° C., 2 MPa for 20 minutes, and the fibers are alternately rotated at 0 degrees and 90 degrees. Symmetrical lamination, carbon fiber volume fraction 47% (mass basis carbon fiber content 57%), 2 mm thick carbon fiber composite material was prepared.
- a metal plate having a length of 100 mm, a width of 25 mm, and a thickness of 1.6 mm was degreased in an aqueous sodium hydroxide solution having a concentration of 15.0 g / L and a temperature of 60 ° C. for 60 seconds, followed by washing with water for 60 seconds and an oven at 80 ° C. For 30 minutes. Next, it is immersed for 300 seconds in an aqueous phosphoric acid solution at a temperature of 60 ° C. and a concentration of 30 to 50 g / L (90% or more of components other than water is phosphoric acid), and then washed with hot water (60 ° C.) and water for 60 seconds.
- a metal compound film mainly composed of a metal phosphate and a hydroxide was formed on both surfaces of the metal plate.
- a metal plate having a metal compound film was immersed in an ethanol / water (volume ratio: 95/5) solution of triethoxysilylpropylaminotriazinethiol monosodium having a concentration of 0.7 g / L for 30 minutes at room temperature. Thereafter, heat treatment was performed in an oven at 160 ° C. for 10 minutes.
- Example 1 The above metal surface treatment is applied to both surfaces of SPCC (cold rolled steel plate) with a length of 100 mm, a width of 25 mm, and a thickness of 1.6 mm, and nylon 6 films (unitika emblem ON 25 ⁇ m thickness, melting temperature 225 ° C.) are applied to both surfaces.
- SPCC cold rolled steel plate
- nylon 6 films unitika emblem ON 25 ⁇ m thickness, melting temperature 225 ° C.
- the carbon fiber composite material obtained in Reference Example 2 was cut into a length of 100 mm and a width of 25 mm, and the SPCC plate having the nylon layer was overlapped with a single wrap in a range of 25 mm ⁇ 25 mm. Heating and pressing were performed at 2 MPa for 5 minutes to prepare a joining member between the thermoplastic carbon fiber composite material and the SPCC plate. When five such joining members were prepared and a tensile test was performed at a speed of 1 mm / min with an Instron 5587 universal testing machine, the average value of the joining strength was 12 MPa.
- Example 2 The above metal surface treatment is applied to both surfaces of a 590 MPa class high tensile material with a length of 100 mm, a width of 25 mm, and a thickness of 1.6 mm, and two nylon 6 films (unitika emblem ON 25 ⁇ m thickness) are installed on each side.
- a 590 MPa class high tensile material with a length of 100 mm, a width of 25 mm, and a thickness of 1.6 mm
- two nylon 6 films (unitika emblem ON 25 ⁇ m thickness) are installed on each side.
- the nylon film was melted, adhered, and solidified to form a nylon 6 layer on the surface of the high tensile material.
- the flat plate made of the random material obtained in Reference Example 2 was cut into a length of 100 mm and a width of 25 mm, and the high tension material having the nylon layer and a single wrap were overlapped in a range of 25 mm ⁇ 25 mm, and the thermoplastic carbon fiber composite material was 250 ° C.
- the high-tensile material was heated to 140 ° C. and heated and pressurized at 0.2 MPa for 1 minute using a mold. Subsequently, among the wrapped materials, the high-tensile material was heated to 250 ° C. by electromagnetic induction heating and heated and pressurized at 0.2 MPa for 1 minute to prepare a joining member between the thermoplastic carbon fiber composite material and the high-tensile material.
- Example 3 In the same process as in Example 1, two nylon 6 films (Unitika Emblem ON 25 ⁇ m thickness) were installed on both surfaces of the SPCC plate having a surface treatment of length 100 mm, width 25 mm, and thickness 1.6 mm.
- the carbon fiber composite material obtained in (1) was cut into a length of 100 mm and a width of 25 mm, heated to 250 ° C., and overlapped with the SPCC plate having the nylon 6 layer in a range of 25 mm ⁇ 25 mm with a single wrap, and 250 by electromagnetic induction heating in advance.
- a joining member between the thermoplastic carbon fiber composite material and SPCC was prepared by heating and pressurizing at 0.2 MPa for 5 minutes using a mold together with the SPCC plate heated to 0 ° C. Five such bonded members were prepared, and a tensile test was performed at a speed of 1 mm / min with an Instron 5587 universal testing machine. The average value of the bonding strength was 7.4 MPa.
- Example 4 A nylon 6 layer was formed on the surface of the aluminum plate in the same manner as in Example 1 except that a 1 mm thick 5052 aluminum plate was used instead of the SPCC plate.
- the flat plate made of a random material obtained in Reference Example 2 was cut into a length of 100 mm and a width of 25 mm, and the aluminum plate having the nylon layer was overlapped with a single wrap in a range of 25 mm ⁇ 25 mm, and the mold was used at 250 ° C., 0
- a thermoplastic carbon fiber composite material and a 5052 aluminum plate joining member were prepared by heating and pressing at 2 MPa for 5 minutes.
- Example 5 The carbon fiber composite material obtained in Reference Example 1 was heated to 250 ° C. and pressed at a pressure of 20 MPa using a 140 ° C. mold, and the length was 1200 mm, the width was 150 mm, and the height was 50 mm as shown in FIG. A molded body having a substantially U-shaped shape was obtained. As shown in FIG. 2, five holes of 10 mm ⁇ were made in this molded body.
- the joining member of the present invention is excellent in joining strength, and can be used for various applications such as parts constituting a moving body such as an automobile.
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Abstract
Description
熱可塑性炭素繊維複合材料を金属に溶着させるには、マトリックスとして用いている熱可塑性樹脂そのものが金属に対して溶着できる必要がある。金属と樹脂が溶着によって接合されるのは特許文献1のように表面を微細なポーラスにしたアルミニウム材に樹脂を射出成形することによってアンカー効果により接合できることが記されている。また特許文献2、3には金属表面に処理を施して、樹脂と金属を接合することが記されている。
さらに熱硬化性炭素繊維複合材料においては特許文献4に金属と双方に親和性のある中間樹脂層を配置して接合する方法が記されている。
熱可塑性炭素繊維複合材料の利点は熱を加えれば容易に形状が変わることから、熱硬化性炭素繊維複合材料に比べ極めて短い時間で射出ないしはプレス成形ができることである。したがって熱可塑性樹脂をマトッリクスとする炭素繊維複合材料であれば、成形と同時または成形の直後に金型内で熱圧着によって極めて簡便に接合ができれば極めて効率的に金属材料との接合体を得ることができる。しかしながら特許文献2,3に記された熱可塑性樹脂と金属の接合方法により熱可塑性炭素繊維複合材料を金属と接合しようとしても、熱可塑性炭素繊維複合材料は熱可塑性樹脂が炭素繊維束に「滲みこんだ」状態にあるためその材の表面に必ずしも均質に樹脂が存在するわけではなく、中には樹脂の「欠乏した」部分が存在するため、充分な接合強度が発現しなかったり、接合強度が大きくばらついたりする懸念があった。また炭素繊維は金属に対していわゆる電蝕の原因となるため樹脂が欠乏した部分においては金属に直接触れることにより金属を腐食させる原因となっていた。
1. 熱可塑性樹脂をマトリックスとする炭素繊維複合材料と金属との接合部材の製造方法であって、金属表面にトリアジンチオール誘導体を含有する層を形成させ、トリアジンチオール誘導体含有層と炭素繊維複合材料間に熱可塑性樹脂層を設け、該熱可塑性樹脂層を溶融させることにより金属と炭素繊維複合材料とを接合させることによる接合部材の製造方法。
2. 金属を電磁誘導により加熱して接合させる上記1項に記載の接合部材の製造方法。
3. 熱可塑性樹脂層の厚みが5μm以上5mm以下である上記1~2項のいずれかに記載の接合部材の製造方法。
4. 金属を構成する元素が鉄またはアルミニウムを主としてなる上記1~3項のいずれかに記載の接合部材の製造方法。
5. 炭素繊維複合材料における、熱可塑性樹脂の存在量が、炭素繊維100重量部に対し、50~1000重量部である上記1~4項のいずれかに記載の接合部材の製造方法。
6. 上記1~5項のいずれかの製造方法により得られる、熱可塑性炭素繊維複合材料と金属とが接合強度5MPa以上で接合している接合部材。
7. 熱可塑性樹脂をマトリックスとする炭素繊維複合材料と金属とが接合された金属複合成形体の製造方法であって、金属表面にトリアジンチオール誘導体を含有する層を設け、トリアジンチオール誘導体含有層と炭素繊維複合材料との間に設けた熱可塑性樹脂層を溶融させることにより、金属と炭素繊維複合材料との接合および成形を同時に、あるいは連続して行うことを特徴とする金属複合成形体の製造方法。
図2は、実施例5において得られた成形体の形状を示した模式図である。
図3は、実施例5において得られた金属複合成形体の形状を示した模式図である。図中、円形のSPCC板を斜線で示した。
2 熱可塑性樹脂層
3 トリアジンチオール誘導体含有層
4 金属
[熱可塑性炭素繊維複合材料]
本発明で用いる熱可塑性炭素繊維複合材料とは熱可塑性樹脂をマトリックスとし、炭素繊維を含む材料である。炭素繊維複合材料は、炭素繊維100重量部に対し熱可塑性樹脂が50~1000重量部含まれているものであることが好ましい。より好ましくは、炭素繊維100重量部に対し、熱可塑性樹脂50~400重量部、更に好ましくは、炭素繊維100重量部に対し、熱可塑性樹脂50~100重量部である。熱可塑性樹脂が炭素繊維100重量部に対し50重量部未満ではドライの炭素繊維が増加してしまうことがある。また1000重量部を超えると炭素繊維が少なすぎて構造材料として不適切となることがある。
熱可塑性樹脂としてはポリアミド、ポリカーボネート、ポリオキシメチレン、ポリフェニレンスルフィド、ポリフェニレンエーテル、変性ポリフェニレンエーテル、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート、ポリエチレン、ポリプロピレン、ポリスチレン、ポリメチルメタクリレート、AS樹脂、ABS樹脂などが挙げられる。特にコストと物性の兼ね合いからポリアミド、ポリプロピレン、ポリカーボネート、ポリフェニレンスルフィドからなる群より選ばれる少なくとも1種が好ましい。また、ポリアミド(以下、PAと略記することがあり、ナイロンとの別称を用いることもある)としては、PA6(ポリカプロアミド、ポリカプロラクタムとも言い、より正確にはポリε−カプロラクタム)、PA26(ポリエチレンアジパミド)、PA46(ポリテトラメチレンアジパミド)、PA66(ポリヘキサメチレンアジパミド)、PA69(ポリヘキサメチレンアゼパミド)、PA610(ポリヘキサメチレンセバカミド)、PA611(ポリヘキサメチレンウンデカミド)、PA612(ポリヘキサメチレンドデカミド)、PA11(ポリウンデカンアミド)、PA12(ポリドデカンアミド)、PA1212(ポリドデカメチレンドデカミド)、PA6T(ポリヘキサメチレンテレフタルアミド)、PA6I(ポリヘキサメチレンイソフタルアミド)、PA912(ポリノナメチレンドデカミド)、PA1012(ポリデカメチレンドデカミド)、PA9T(ポリノナメチレンテレフタラミド)、PA9I(ポリノナメチレンイソフタルアミド)、PA10T(ポリデカメチレンテレフタラミド)、PA10I(ポリデカメチレンイソフタルアミド)、PA11T(ポリウンデカメチレンテレフタルアミド)、PA11I(ポリウンデカメチレンイソフタルアミド)、PA12T(ポリドデカメチレンテレフタラミド)、PA12I(ポリドデカメチレンイソフタルアミド)、ポリアミドMXD6(ポリメタキシリレンアジパミド)からなる群より選ばれる少なくとも1種が好ましい。
熱可塑性炭素繊維複合材料における炭素繊維の形態は、とくに限定されず、連続繊維からなる織物であっても、繊維を一方向に配置したものであっても良い。繊維を一方向に配置する場合は、層の方向を変えて多層に積層する、例えば交互に積層することができる。また積層面を厚み方向に対称に配置することが好ましい。
また熱可塑性炭素繊維複合材料において、不連続の炭素繊維を分散して重なるように配置したものであってもよい。この場合の繊維長は5mm以上100mm以下が好ましい。不連続の炭素繊維の場合、炭素繊維は複合材料中で炭素繊維束の状態で存在していてもよく、また炭素繊維束と単糸の状態が混在していることも好ましい。不連続の炭素繊維は複合材料中で2次元ランダムに配置されていることも好ましい。
熱可塑性炭素繊維複合材料としては、長繊維ペレット、すなわち溶融した樹脂を所定の粘度に調整し連続繊維の炭素繊維に含浸させた後切断するといった工程で得られるペレットを用い、射出成形機で所定の形状に成形してもよい。
[金属]
本発明に用いる金属とは、具体的には鉄、ステンレス、アルミニウム、銅、黄銅、ニッケル、亜鉛等の金属が挙げられるが、金属を構成する元素が鉄またはアルミニウムを主とすることが好ましい。ここで主とは90重量%以上である。特にSS材、SPCC材、ハイテン材などの鉄や、SUS304、316などのステンレス、1000~700番台アルミニウムやその合金が好ましく用いられる。
接合しようとする金属の形状にとくに限定はなく、得ようとする接合部材に合わせて適宜選択できる。
[トリアジンチオール誘導体含有層]
金属の接合しようとする表面にトリアジンチオール誘導体を含む層を形成して、接合に供する。トリアジンチオール誘導体含有層は金属の接合しようとする全面に形成する必要はなく、また厚みもとくに制限はなく、接着性が確保できれば良い。トリアジンチオール誘導体としては、金属との化学結合が期待できる脱水シラノール含有トリアジンチオール誘導体、またはアルコキシシラン含有トリアジンチオール誘導体が好ましく挙げられる。
アルコキシシラン含有トリアジンチオール誘導体としては、下記一般式(1)、(2)
(上記一般式(1)および(2)において、式中のR1は、H−、CH3−、C2H5−、CH2=CHCH2−、C4H9−、C6H5−、C6H13−のいずれかである。R2は、−CH2CH2−、−CH2CH2CH2−、−CH2CH2CH2CH2CH2CH2−、−CH2CH2SCH2CH2−、−CH2CH2NHCH2CH2CH2−のいずれかである。R3は、−(CH2CH2)2CHOCONHCH2CH2CH2−、または、−(CH2CH2)2N−CH2CH2CH2−であり、この場合、NとR3とが環状構造となる。
上記一般式(1)および(2)において、式中のXは、CH3−、C2H5−、n−C3H7−、i−C3H7−、n−C4H9−、i−C4H9−、t−C4H9−、C6H5−のいずれかであり、Yは、CH3O−、C2H5O−、n−C3H7O−、i−C3H7O−、n−C4H9O−、i−C4H9O−、t−C4H9O−、C6H5O−のいずれかであり、式中のnは1、2、3のいずれかの数字であり、Mは−Hまたはアルカリ金属である。)
および、下記一般式(3)
(上記一般式(3)において、R4は−S−,−O−,−NHCH2C6H4O−,−NHC6H4O−,−NHC6H3(Cl)O−,−NHCH2C6H3(NO2)O−,−NHC6H3(NO2)O−,−NHC6H3(CN)O−,−NHC6H2(NO2)2O−,−NHC6H3(COOCH3)O−,−NHC10H6O−,−NHC10H5(NO2)O−,−NHC10H4(NO2)2O−,−NHC6H4S−,−NHC6H3(Cl)S−,−NHCH2C6H3(NO2)S−,−NHC6H3(NO2)S−,−NHC6H3(CN)S−,−NHC6H2(NO2)2S−,−NHC6H3(COOCH3)S−,−NHC10H6S−,−NHC10H5(NO2)S−,−NHC10H4(NO2)2S−であり、M’は−Hまたはアルカリ金属、Zはアルコキシ基、好ましくは炭素数1~4のアルコキシ基であり、jは1~6の整数である)
で表される化合物よりなる群から選ばれる1種類以上が好ましい。なお、上記一般式(1)~(3)において、アルカリ金属とはリチウム、ナトリウム、カリウム、ルビジウム、およびセシウムからなる群より選ばれる少なくとも1種である。
本発明において用いられるトリアジンチオール誘導体として、具体的には、優れた効果を示すアルコキシシラン含有トリアジンチオール誘導体である、下記のトリエトキシシリルプロピルアミノトリアジンチオールモノナトリウム
が好ましいものとして挙げられる。トリアジンチオール誘導体含有層を形成する方法としてはWO2009/157445号パンフレットに記載の方法が好ましく挙げられる、具体的にはアルコキシシラン含有トリアジンチオール、水エタノール溶液に浸漬した後、引き上げて加熱処理を行い、反応完結および乾燥する方法が挙げられる。またトリアジンチオール誘導体含有層には、トリアジンチオール誘導体以外の物質が本発明の目的を損なわない範囲で含まれていても良い。
[金属化合物層]
さらにかかるトリアジンチオール誘導体含有層と金属との間に、水酸化物、カルボン酸塩、リン酸塩、硫酸塩などの金属化合物層を含むことが、更なる接合強度向上が期待でき好ましい。金属化合物層を形成する方法としてはWO2009/157445号公報に記載の方法が好ましく挙げられるが、具体的には塩酸、硫酸、リン酸などの酸に浸漬する方法が挙げられる。
[熱可塑性樹脂層]
本発明は熱可塑性炭素繊維複合材料と金属上に設けたトリアジンチオール誘導体含有層との間に、熱可塑性樹脂層を設け、熱可塑性樹脂層を溶融させることにより金属と炭素繊維複合材料とを接合させることを特徴とする。熱可塑性樹脂層は接合しようとする面全体に設ける必要はなく、接着性が確保できれば良い。熱可塑性樹脂層は、フィルム状、織物状、不織布状、粉状などで配置し、熱および圧力をかけ、熱可塑性樹脂を熱可塑性炭素繊維複合材料の繊維に含浸させることができる程度に溶融させ、金属と炭素繊維複合材料とを接合させる。
熱可塑性樹脂層を構成する熱可塑性樹脂は、熱可塑性炭素繊維複合材料のマトリックス樹脂と相溶する樹脂とすることが好ましく、熱可塑性炭素繊維複合材料を構成するマトリックス樹脂と同様の樹脂が好ましく挙げられる。熱可塑性樹脂層を構成する熱可塑性樹脂と熱可塑性炭素繊維複合材料を構成する熱可塑性樹脂は同種の樹脂であることがより好ましい。熱可塑性樹脂層を構成する熱可塑性樹脂として好ましいものは、熱可塑性炭素繊維複合材料を構成する熱可塑性樹脂について前述したものと同様である。
かかる熱可塑性樹脂層の厚みは5、好ましくはμm以上5mm以下であり、より好ましくは20μm以上4mm以下であり、さらに好ましくは40μm以上3mm以下である。樹脂層の厚みが5μm未満では溶着に必要な樹脂が不足し充分な強度が得られない場合がある。樹脂層が5mmを超えると両者に剪断的な荷重が掛かった際に接合面にモーメントが働いて全体として強度が低下することがある。かかる樹脂層を5μm以上設けることで溶着の際に充分な樹脂を供給することができ、炭素繊維が金属に接触することが防止できるため電蝕防止が期待でき好ましい。
[溶着方法]
本発明の接合部材の製造方法においては、金属表面のトリアジンチオール誘導体含有層と炭素繊維複合材料間に熱可塑性樹脂層を設け、熱可塑性樹脂層を溶融し、金属と炭素繊維複合材料とを接合させる。
このような熱可塑性樹脂層の溶着方法としては加熱加圧による方法が好ましい。加熱方法としては外部ヒーターによる伝熱、輻射などが好ましい。さらに接合する金属を電磁誘導により加熱する方法が、樹脂との接合面を直接加熱することができるため極めて好ましい。金属の加熱のタイミングは加熱された樹脂を成形するときに合わせることが溶着強度を最も高くする上で好ましいが、工程上、成形が行われた後で金属を加熱し、再加圧して接合することもできる。
加熱温度は熱可塑性樹脂層を構成する熱可塑性樹脂の溶融温度以上かつ分解温度以下にすることが好ましく、溶融温度+15℃以上かつ分解温度−30℃であることがより好ましい。加圧条件としては溶着面に0.01~2MPa、好ましくは0.02~1.5MPa、さらに好ましくは0.05~1MPaの圧力をかけることが好ましい。圧力が0.01MPa未満では良好な接合力が得られないことがあり、また加熱時に複合材料がスプリングバックして形状を保持できず素材強度も低下する場合がある。また圧力が2MPaを超えると加圧部分が潰れ、形状保持が困難となったり、素材強度が低下したりすることがある。
トリアジンチオール誘導体含有層と炭素繊維複合材料間に配置する熱可塑性樹脂層は、あらかじめどちらか一方側に先に接着して樹脂層を形成させてもよい。一方側に熱可塑性樹脂層を形成する場合は、トリアジンチオール誘導体含有層を表面に形成した金属層の側に接着配置することが好ましい。また、トリアジンチオール誘導体含有層付き金属層の上に熱可塑性樹脂層および炭素繊維複合材料を重ね、同時に全体を熱圧着させ接合部材を製造することができる。
熱可塑性樹脂層を形成させる工程の温度は熱可塑性樹脂の溶融温度+15℃以上かつ分解温度−30℃であることがより好ましい。熱可塑性樹脂層は、フィルム状、織物状、不織布状、またはシート状の形態で用い熱圧着させたり、溶融樹脂を射出成形により薄く貼り付けたりして配置することができる。
熱溶融した熱可塑性樹脂を接触させるときの金属の温度は、熱可塑性樹脂の溶融温度+15℃以上かつ分解温度−30℃であることが好ましい。金属の温度がその範囲以下であると樹脂が表面に馴染みにくい場合があり、またその範囲を超えると樹脂の分解が進むことがある。さらにかかる温度を維持する時間は、熱可塑性炭素繊維複合材料と金属との本質的な接合のための時間が確保できるならば極力短いほうがよい。熱可塑性樹脂層と金属との接合強度はかかる金属表面のトリアジンチオール誘導体含有層による親和性が重要であり、一般に高温によってかかるトリアジンチオール誘導体含有層が変質する恐れがあるため、長時間高温にすることは好ましくない。一例として275℃での接合時間は概ね10分以下が好ましい。
[金属複合成形体]
熱硬化性樹脂をマトリックスとした炭素繊維複合材料では、金属と接合しようとする場合に、接着剤の使用や、プリプレグ中に金属をインサートした後オートクレーブ中での長時間にわたる成形を強いられていた。本発明は熱可塑性樹脂をマトリックスとした炭素繊維複合材料を用いているため、プレスなどの成形工程と同時に、あるいは連続して金属の接合も行うことができる。すなわち本発明は型内で成形と接合を同時に行うことを特徴とする、炭素繊維複合材料と金属とが接合された金属複合成形体の製造方法を包含する。
本発明は熱可塑性樹脂をマトリックスとする炭素繊維複合材料と金属とが接合された金属複合成形体の製造方法であって、金属表面にトリアジンチオール誘導体を含有する層を設け、トリアジンチオール誘導体含有層と炭素繊維複合材料との間に設けた熱可塑性樹脂層を溶融させることにより、金属と炭素繊維複合材料との接合および成形を同時に、あるいは連続して行うことを特徴とする金属複合成形体の製造方法である。金属複合成形体製造における成形と接合は短時間で処理可能のため、従来の熱硬化性樹脂をマトリックスとした炭素繊維複合材料を用いる場合に比べて工業的に優位な方法である。なお、本発明の金属複合成形体の製造方法において、「金属と炭素繊維複合材料との接合および成形を連続して行う」とは、金属と炭素繊維複合材料とを接合した後、連続して成形を行うだけでなく、炭素繊維複合材料を所望の形状に成形した後、連続して金属を接合させることも含む。
[接合部材]
本発明により炭素繊維複合材料と金属とが強固に接合した接合部材が得られる。接合部材の接合強度は5MPa以上である。接合強度は引っ張り試験で評価することができるが、接合強度の上限は実質50MPa程度である。本発明で得られる接合部材、および金属複合成形体は、強度が必要とされるような構造部材として好適に用いることができる。構造部材としては例えば自動車などの移動体を構成する部品などが挙げられる。 接合部材の接合箇所数に限定はなく、シングルラップによってもダブルラップによっても、接合環境により任意に選ぶことができ、ダブルラップは面積が2倍となるため接合強度も2倍となる。
なお、各実施例、比較例における物性測定および評価の条件は以下のとおりである。
1) 接合強度
各実施例などに記載のとおりの接合部材を5枚作成し、インストロン5587万能試験機により、速度1mm/分で引っ張り試験を行って求めた引っ張り強度の値を、当該接合部材の接合強度の値とした。
[参考例1]連続繊維0度90度交互積層材の炭素繊維複合材料の製造
炭素繊維(東邦テナックス製テナックスSTS40−24KS(繊維径7μmm、引張強度4000MPa)を、ナイロン6フィルム(ユニチカ・エンブレムON25μm厚)を積層しながら、繊維方向0度、90度交互に64層積層し(炭素繊維64層でナイロン65層)、260℃、2MPa、20分加熱圧縮し、繊維が0度90度交互、対称積層、炭素繊維体積率47%(質量基準の炭素繊維含有率57%)、2mm厚の炭素繊維複合材料を作成した。
[参考例2]ランダム材からなる平板の炭素繊維複合材料の製造
平均繊維長16mmにカットした炭素繊維(東邦テナックス製テナックスSTS40、平均繊維径7μm)を平均目付け540g/m2となるようランダムに配置し、ユニチカKE435−POG(ナイロン6)クロス10枚の間に挟みこんで260℃、2.5MPaでプレスし1400mm×700mm、炭素繊維体積率35%(質量基準の炭素繊維含有率45%)、厚み2mmの平板の炭素繊維複合材料を作成した。
[金属表面処理]
長さ100mm、幅25mm、厚み1.6mmの金属板を濃度15.0g/L、温度60℃の水酸化ナトリウム水溶液中で60秒間脱脂を行った後、水洗を60秒行い、80℃のオーブンで30分間乾燥した。次に温度60℃、濃度30~50g/L、のリン酸水溶液(水以外の成分の90%以上がリン酸)中で300秒間浸漬し、次いで湯洗(60℃)および水洗を各60秒間行い、リン酸金属塩、水酸化物を主成分とする金属化合物皮膜を金属板両表面上に形成した。次に濃度0.7g/Lのトリエトキシシリルプロピルアミノトリアジンチオールモノナトリウムのエタノール/水(体積比95/5)溶液に、金属化合物皮膜を有する金属板を室温で30分間浸漬した。その後オーブン内で160℃、10分間熱処理した。次に濃度1.0g/LのN,N’−m−フェニレンジマレイミドと濃度2g/Lのジクミルパーオキシドを含むアセトン溶液に室温で10分間浸漬し、オーブン内150℃、10分間熱処理した。さらに金属板表面全体に濃度2g/Lのジクミルバーオキシドのエタノール溶液を室温で噴霧し、風乾し、トリアジンチオール誘導体層を金属板表面全体に設けた。
[実施例1]
長さ100mm、幅25mm、厚み1.6mmのSPCC(冷間圧延鋼板)の両表面に上記の金属表面処理を施し、両面にそれぞれナイロン6フィルム(ユニチカ・エンブレムON25μm厚、溶融温度225℃)を2枚ずつ設置した後、SPCC板を電磁誘導加熱により250℃まで昇温させ、直ちに常温まで冷却した。ナイロンフィルムは溶融~密着した後、固化し、SPCC表面にナイロン6の層を形成した。参考例2で得られた炭素繊維複合材料を長さ100mm、幅25mmに切り出し、上記ナイロン層を有するSPCC板とシングルラップで25mm×25mmの範囲で重ね、金型を用いて250℃、0.2MPa、5分間加熱加圧し、熱可塑性炭素繊維複合材料とSPCC板との接合部材を作成した。かかる接合部材を5枚作成し、インストロン5587万能試験機により速度1mm/分で引っ張り試験を行ったところ、接合強度の平均値は12MPaであった。
[実施例2]
長さ100mm、幅25mm、厚み1.6mmの590MPa級ハイテン材の両表面に上記の金属表面処理を施し、両面にナイロン6フィルム(ユニチカ・エンブレムON25μm厚)を2枚ずつ設置した後、ハイテン材を電磁誘導加熱により250℃まで昇温させ、直ちに常温まで冷却した。ナイロンフィルムは溶融、密着、固化し、ハイテン材表面にナイロン6の層を形成した。参考例2で得られたランダム材からなる平板を長さ100mm、幅25mmに切り出し、上記ナイロン層を有するハイテン材とシングルラップで25mm×25mmの範囲で重ね、熱可塑性炭素繊維複合材料を250℃、ハイテン材を140℃に加熱し、金型を用いて0.2MPa、1分間加熱加圧した。引き続いて上記ラップした材料のうちハイテン材を電磁誘導加熱により250℃まで昇温させ、0.2MPa、1分間加熱加圧し、熱可塑性炭素繊維複合材料とハイテン材との接合部材を作成した。かかる接合部材を5枚作成し、インストロン5587万能試験機により速度1mm/分で引っ張り試験を行ったところ、接合強度の平均値は17MPaであった。
[実施例3]
実施例1と同様の工程で、表面処理をした長さ100mm、幅25mm、厚み1.6mmのSPCC板両面にナイロン6フィルム(ユニチカ・エンブレムON25μm厚)を2枚ずつ設置し、さらに参考例1で得られた炭素繊維複合材料を長さ100mm、幅25mmに切り出し250℃に昇温させ、上記ナイロン6層を有するSPCC板とシングルラップで25mm×25mmの範囲で重ね、あらかじめ電磁誘導加熱により250℃まで昇温させたSPCC板とともに金型を用いて0.2MPa、5分間加熱加圧し熱可塑性炭素繊維複合材料とSPCCとの接合部材を作成した。かかる接合部材を5枚作成し、インストロン5587万能試験機により速度1mm/分で引っ張り試験を行ったところ、接合強度の平均値は7.4MPaであった。
[実施例4]
SPCC板の代わりに1mm厚5052アルミニウム板を用いたほかは実施例1と同様にして、アルミニウム板表面にナイロン6層を形成した。参考例2で得られたランダム材からなる平板を長さ100mm、幅25mmに切り出し、上記ナイロン層を有するアルミニウム板とシングルラップで25mm×25mmの範囲で重ね、金型を用いて250℃、0.2MPa、5分間加熱加圧し熱可塑性炭素繊維複合材料と5052アルミニウム板接合部材を作成した。かかる接合部材を5枚作成しインストロン5587万能試験機により速度1mm/分で引っ張り試験を行ったところ、アルミニウム板部分が破壊された。アルミニウム板の破壊強度から計算すると接合強度は7.1MPa以上であることがわかった。
[比較例1]
金属表面処理を行った長さ100mm、幅25mm、厚み1.6mmのSPCC板に、ナイロン6層を設けることなく、かつ、参考例2で得られた炭素繊維複合材料の代わりに、同寸法のナイロン6片を接合させた以外は、実施例1と同様に操作を行った。しかし、得られた接合部材について接合強度を測定しようとしたところ、ナイロン6片がちぎれてしまった。
[実施例5]
参考例1で得られた炭素繊維複合材料を250℃に昇温させ、140℃の金型を用いて20MPaの圧力でプレスし、図2に示すような長さ1200mm、幅150mm、高さ50mmの略コの字形の形状を有する成形体を得た。この成形体に、図2に示すとおり10mmφの5つの穴を開けた。それらの穴の各箇所へ、中心に10mmφの穴を有する100mmφ、厚み1.6mmのSPCC板に実施例1と同様の工程で金属表面処理をしたものを、同寸法のナイロン6フィルム(ユニチカ・エンブレムON25μm厚)2枚を介して乗せ、電磁誘導加熱により250℃まで昇温させた後、20kgf(196N)の力で100℃程度になるまでSPCC板を加圧して成形体と接合させ、金属複合成形体を得た。この金属複合成形体はシートレールの部品として使用できるものであり、その形状を図3に示す。
Claims (7)
- 熱可塑性樹脂をマトリックスとする炭素繊維複合材料と金属との接合部材の製造方法であって、金属表面にトリアジンチオール誘導体を含有する層を形成させ、トリアジンチオール誘導体含有層と炭素繊維複合材料間に熱可塑性樹脂層を設け、該熱可塑性樹脂層を溶融させることにより金属と炭素繊維複合材料とを接合させることによる接合部材の製造方法。
- 金属を電磁誘導により加熱して接合させる請求項1に記載の接合部材の製造方法。
- 熱可塑性樹脂層の厚みが5μm以上5mm以下である請求項1~2のいずれかに記載の接合部材の製造方法。
- 金属を構成する元素が鉄またはアルミニウムを主としてなる請求項1~3のいずれかに記載の接合部材の製造方法。
- 炭素繊維複合材料における、熱可塑性樹脂の存在量が、炭素繊維100重量部に対し、50~1000重量部である請求項1~4のいずれかに記載の接合部材の製造方法。
- 請求項1~5のいずれかの製造方法により得られる、熱可塑性炭素繊維複合材料と金属とが接合強度5MPa以上で接合している接合部材。
- 熱可塑性樹脂をマトリックスとする炭素繊維複合材料と金属とが接合された金属複合成形体の製造方法であって、金属表面にトリアジンチオール誘導体を含有する層を設け、トリアジンチオール誘導体含有層と炭素繊維複合材料との間に設けた熱可塑性樹脂層を溶融させることにより、金属と炭素繊維複合材料との接合および成形を同時に、あるいは連続して行うことを特徴とする金属複合成形体の製造方法。
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EP11844284.7A EP2647490A4 (en) | 2010-11-30 | 2011-11-25 | METHOD FOR PRODUCING JOINT ELEMENT FOR CARBON FIBER COMPOSITE MATERIAL |
BR112013013031A BR112013013031A2 (pt) | 2010-11-30 | 2011-11-25 | método de produção de componente de junção de material compósito de fibra de carbono |
KR1020137013379A KR20130133195A (ko) | 2010-11-30 | 2011-11-25 | 탄소섬유 복합재료의 접합 부재의 제조 방법 |
RU2013129816/05A RU2560372C2 (ru) | 2010-11-30 | 2011-11-25 | Способ получения соединительного элемента для углеродного волокнистого композитного материала |
JP2012546951A JP5648069B2 (ja) | 2010-11-30 | 2011-11-25 | 炭素繊維複合材料の接合部材の製造方法 |
MX2013005528A MX2013005528A (es) | 2010-11-30 | 2011-11-25 | Metodo para la produccion de miembro de union para material compuesto de fibra de carbono. |
CN2011800569657A CN103298601A (zh) | 2010-11-30 | 2011-11-25 | 制备用于碳纤维复合材料的接合构件的方法 |
CA2818928A CA2818928A1 (en) | 2010-11-30 | 2011-11-25 | Method for production of joint member for carbon fiber composite material |
US13/904,107 US20130272780A1 (en) | 2010-11-30 | 2013-05-29 | Joint Member and Method for Producing the Same, and Method for Producing Metal Composite Molded Product |
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Also Published As
Publication number | Publication date |
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CA2818928A1 (en) | 2012-06-07 |
EP2647490A4 (en) | 2016-04-27 |
EP2647490A1 (en) | 2013-10-09 |
RU2013129816A (ru) | 2015-01-10 |
KR20130133195A (ko) | 2013-12-06 |
BR112013013031A2 (pt) | 2016-08-09 |
RU2560372C2 (ru) | 2015-08-20 |
MX2013005528A (es) | 2013-07-05 |
JP5648069B2 (ja) | 2015-01-07 |
JPWO2012074083A1 (ja) | 2014-05-19 |
CN103298601A (zh) | 2013-09-11 |
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