WO2014112506A1 - 金属-樹脂接合体の製造方法及び金属-樹脂接合体 - Google Patents
金属-樹脂接合体の製造方法及び金属-樹脂接合体 Download PDFInfo
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- WO2014112506A1 WO2014112506A1 PCT/JP2014/050531 JP2014050531W WO2014112506A1 WO 2014112506 A1 WO2014112506 A1 WO 2014112506A1 JP 2014050531 W JP2014050531 W JP 2014050531W WO 2014112506 A1 WO2014112506 A1 WO 2014112506A1
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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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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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
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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
- B29C65/82—Testing the joint
- B29C65/8207—Testing the joint by mechanical methods
- B29C65/8215—Tensile tests
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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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
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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
- B29C66/70—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
- B29C66/72—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 characterised by the structure of the material of the parts to be joined
- B29C66/723—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 characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—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 characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72321—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 characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
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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
- B29C66/70—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
- B29C66/73—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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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
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
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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
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
- B29C65/0672—Spin welding
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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
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
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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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
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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
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
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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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
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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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
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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
- B29C66/70—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
- B29C66/71—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 characterised by the composition of the plastics material of the parts to be joined
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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
- B29C66/70—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
- B29C66/73—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/735—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 characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
- B29C66/7352—Thickness, e.g. very thin
Definitions
- the present invention provides a metal-resin bonded body for manufacturing a metal-resin bonded body in which a metal member and a resin member made of a thermoplastic resin are bonded by thermal welding and the metal member and the resin member are integrated.
- the present invention relates to a method and a metal-resin joined body produced by this method.
- thermoplastic resins For joining thermoplastic resins, methods using an external heat source such as hot air welding, hot plate welding, laser welding, electromagnetic heating methods such as high frequency welding, electric heating methods such as hot wire welding, vibration welding, spin welding, etc. , A method that uses frictional heat generation such as ultrasonic welding, a method that uses the retained heat of a secondary injection resin such as injection welding, and so on. These heat welding techniques are known, and are used in various applications depending on the characteristics of each heat welding technique.
- a method of bonding under pressure using an adhesive or the metal member is inserted into an injection mold and inserted.
- the mainstream method is to inject a molten thermoplastic resin toward the surface of the metal member, and simultaneously join the metal member and the resin member when molding the resin member, and use the technique of thermal welding.
- the following proposals have been seen, but sufficient studies have not yet been made.
- Patent Document 1 when a resin material made of a thermoplastic resin having a thickness of 0.1 mm or more and a metal material having a thickness of 0.1 mm or more are joined, a resin material is joined to the metal material.
- a resin thin film having a film thickness of 0.1 to 50 ⁇ m made of a thermoplastic resin compatible with the thermoplastic resin of the resin material is laminated on the surface, and the resin thin film of the metal material and the resin material are overlapped with each other to form a metal material.
- the cylindrical rotary tool is pressed from the side and rotated. At this time, the frictional heat generated between the rotary tool and the metal material is exchanged between the resin material in contact with the metal material and the resin thin film of the metal material via the metal material.
- bonding is performed by transmitting between the joining surfaces and mixing the two.
- Patent Document 2 a metal body having a lower melting point than that of the thermoplastic resin body is brought into surface contact with the thermoplastic resin body, and ultrasonic vibration is applied to the metal body to melt the metal body and soften the thermoplastic resin body. Then, a method has been proposed in which a molten metal body is diffused into a softened thermoplastic resin body to join the metal body and the thermoplastic resin body.
- the present inventors joined a metal member and a resin member made of a thermoplastic resin to manufacture a metal-resin joined body in which the metal member and the resin member are integrated with a simpler method.
- a resin bonding layer having a predetermined film thickness is previously formed on the metal member side.
- an object of the present invention is to provide a simpler and more versatile method for producing a metal-resin joined body in which a metal member and a resin member made of a thermoplastic resin are integrated. Stable joint strength can be imparted between the joint surfaces between the metal and the resin, and the metal member of the metal-resin joined body is not damaged and the subsequent of the obtained metal-resin joined body. It is an object of the present invention to provide a method for producing a metal-resin bonded body that does not cause problems such as cracking in processing such as pressing and bending.
- Another object of the present invention is to provide a metal-resin bonded body manufactured by such a method, having a stable bonding strength between bonding surfaces and excellent in properties such as appearance.
- the present invention is a method of manufacturing a metal-resin bonded body by bonding a metal member and a resin member made of a thermoplastic resin, and a thermoplastic having compatibility with the resin member in advance on the bonding surface of the metal member.
- a metal-resin bonded body characterized by laminating a resin bonding layer having a thickness of 0.01 to 9 mm made of a resin, and bonding the bonding surface between the resin bonding layer of the metal member and the resin member by heat welding. It is a manufacturing method.
- the present invention is a metal-resin bonded body obtained by such a method.
- the metal member those made of various metal materials can be used depending on the use of the metal-resin assembly to be produced.
- an aluminum member made of aluminum or an aluminum alloy, or iron or iron alloy Or iron members made of alloy steel, etc., copper members made of pure copper, high copper alloys, brass, bronze, copper nickel alloys, etc., titanium members made of titanium or titanium alloys, etc., magnesium members made of magnesium or magnesium alloys, etc. can be mentioned.
- the aluminum member has excellent conductivity, is lightweight and excellent in workability and heat dissipation, and can be suitably used for many applications.
- the resin member used in the present invention is not particularly limited as long as it is a thermoplastic resin and can be melted or softened under heating.
- Polyethylene, polypropylene, polystyrene, ABS resin, AS resin, polyvinyl chloride, acrylic Resins, polyvinyl acetate, polyamide resins, polyacetals, polyester resins, etc. can be exemplified, and preferably various kinds of materials because they are inexpensive, excellent in handling properties, easy to melt at low temperatures and excellent in workability.
- An olefin resin more preferably an olefin resin such as polyethylene or polypropylene.
- polyethylene has a low processing deformation temperature
- the processing temperature at the time of joining can be lowered
- the deformation surface of the joined surface of the joined body can be easily deformed
- polypropylene has a high tensile strength and is a metal.
- a high bonding strength can be stably imparted between the bonding surfaces between the member and the resin member.
- the resin material for forming the resin bonding layer laminated on the bonding surface of the metal member is not particularly limited as long as it is a thermoplastic resin that is compatible with the resin member and melts or softens under heating. However, it is preferable to use various olefin-based resins because they are inexpensive, excellent in handling properties, easy to melt at low temperatures and excellent in workability. It is a resin, more preferably an olefin resin such as polypropylene or polyethylene.
- the melting point difference between the melting point of the resin member and the melting point of the resin bonding layer is preferably 100 ° C. or less, and more preferably, the melting point difference is 50 ° C. or less.
- the difference in melting point between the resin member and the resin bonding layer is 100 ° C. or more, the viscosity of the resin bonding layer is lowered before the resin member is melted when the pressure is applied to bond the resin member and the resin bonding layer. There is a concern that the resin bonding layer may flow out of the bonding surface before the layers are compatible.
- the film thickness of the resin bonding layer is less than 0.1 mm, or conversely, if the film thickness is greater than 9 mm, it is sufficient between the bonding surfaces between the metal member and the resin member. May not be able to obtain a good bonding strength.
- the reason why sufficient bonding strength cannot be obtained when the film thickness is less than 0.1 mm is not clear, but the film thickness of the resin bonding layer is thin and sufficient heat insulation effect does not occur, and heat welding is performed. During this process, the heat supplied between the joining surfaces easily flows out to the metal member side having excellent thermal conductivity, and is necessary and sufficient for joining between the joining surfaces between the resin joining layer of the metal member and the resin member.
- the ultrasonic welding when the film thickness of the resin bonding layer is less than 0.01 mm, or conversely, when the film thickness is greater than 1 mm, the bonding between the metal member and the resin member is performed. In some cases, sufficient bonding strength cannot be obtained between the surfaces.
- the reason why sufficient bonding strength cannot be obtained when the film thickness is less than 0.01 mm is not clear, but the film thickness of the resin bonding layer is thin and sufficient heat insulation effect does not occur, and heat welding is performed. During this process, the heat supplied between the joining surfaces easily flows out to the metal member side having excellent thermal conductivity, and is necessary and sufficient for joining between the joining surfaces between the resin joining layer of the metal member and the resin member.
- the thickness of the resin bonding layer is less than 0.05 mm, or conversely, if the thickness is greater than 1 mm, the bonding surface between the metal member and the resin member In some cases, sufficient bonding strength cannot be obtained.
- the reason why a sufficient bonding strength cannot be obtained when the film thickness is thinner than 0.05 mm is that the melting heat of the molten resin that has reached the bonding surface diffuses to the metal member side having excellent thermal conductivity.
- the reason why sufficient bonding strength cannot be obtained when the film thickness is thicker than 8 mm is that the resin bonding layer is not uniformly bonded to the metal member, so that high bonding strength is obtained when the resin member is bonded thereafter. It is considered impossible.
- the resin bonding layer is laminated on the bonding surface of the metal member.
- a method for forming the resin bonding layer at this time is as follows. There is no particular limitation as long as the resin bonding layer having a thickness of 0.01 to 9 mm can be formed.
- a resin sheet made of a thermoplastic resin having compatibility with the resin member is bonded to the bonding surface of the metal member. It may be formed.
- the laminate bonding method of forming a resin bonding layer by bonding a resin sheet to a bonding surface of a metal member can reduce the cost of a resin bonding layer having a desired film thickness by using a resin sheet having a desired film thickness.
- the term “laminate adhesion” means that a resin sheet made of a thermoplastic resin is laminated on the surface of a metal member at a temperature not lower than the glass transition temperature and lower than the melting point under heat and pressure.
- a hydration film is formed by cleaning the joining surface of the metal member with an acid aqueous solution and / or an alkaline aqueous solution, or treating the joining surface of the metal member in pure water or an alkaline solution at 50 ° C. or higher.
- Hydration treatment zincate treatment that forms a zincate film by treating the joint surfaces of metal members in a zinc-containing alkaline solution, and trivalent that forms a chromate film by treating in a phosphate chromate solution at 50 ° C or higher
- a pretreatment consisting of one or two or more treatments selected from chromate treatment or the like is preferably performed.
- a metal member is immersed in an acid aqueous solution, then washed with water, then immersed in an alkaline aqueous solution, again immersed in an acid aqueous solution, and then washed with water. And a method of washing with a volatile organic solvent such as acetone.
- a hydration treatment for forming a hydrated film on the joint surface include a method of treating with pure water at 70 ° C. or higher.
- specific examples of the zincate treatment for forming a zinc-containing film on the joint surface include, for example, a method of treating with an alkaline zinc-containing solution.
- specific examples of the trivalent chromate treatment for forming a trivalent chromate film on the joint surface include a method of treating with a phosphoric acid chromate treatment solution.
- the above-mentioned cleaning treatment is applied as a pretreatment to the joint surface before laminating, and in addition to the washing treatment, the hydration treatment, zincate treatment, It is preferable to perform a valent chromate treatment to form a hydrated film or a zinc-containing film, whereby the adhesion between the bonding surface of the aluminum member and the resin bonding layer can be further increased.
- the reason why the adhesion is improved by performing the pretreatment as described above is not necessarily clear, but is included in the OH group and the resin bonding layer present in the outermost layer of the hydrated film, zincate film, and trivalent chromate film.
- the metal member prepared as described above is joined by so-called thermal welding, where the joint surface between the resin joint surface and the resin member of the metal member is heated and compatibilized to join them.
- a metal-resin bonded body is integrally manufactured.
- vibration welding spin Heating by frictional heating such as welding, ultrasonic welding, etc., heating using an external heat source such as laser welding, hot press welding, hot air welding, hot plate welding, electromagnetic heating such as high frequency welding, electric heating such as hot wire welding, etc.
- the metal member be resin-bonded A joining method in which the joining surfaces of the layer and the resin member are pressed against each other, frictional heat is generated by relative motion, and the frictional heat is heated and compatibilized to join them. It is preferable that either one surface is heated by laser irradiation between the joint surfaces with the member to make them compatible and joined, and among these joining methods by frictional heat generation, the joining time is short and the productivity is low. From the viewpoint that the appearance of the bonded surface after bonding is high or is difficult to be impaired, a bonding method by vibration welding, ultrasonic welding or injection welding is more preferable.
- the above-described joining method by vibration welding is set in the vibration welding machine by superimposing the portions (joint surfaces) where the resin joining layer and the resin member of the metal member prepared as described above are to be joined to each other.
- a reciprocating vibration having a predetermined frequency and a predetermined maximum amplitude is applied to the metal member side or the resin member side, and frictional heat generated between the joining surfaces by the reciprocating vibration is applied.
- the bonding surface between the resin bonding layer of the metal member and the resin member is heated, and the thermoplastic resin of the resin bonding layer and the resin member is made compatible to be bonded.
- the above-described joining method by ultrasonic welding is performed by superposing the portions (joining surfaces) where the resin joining layer and the resin member of the metal member prepared as described above are to be joined to each other.
- the electrical signal amplified by the oscillator is input to the piezo-electric element of the vibrator, and the electrical signal is converted into mechanical vibration energy by the piezo-electric element.
- the mechanical vibration energy is converted and transmitted between the joint surface between the resin joint layer of the metal member and the resin member via the horn of the resonator, and the resin joint layer of the metal member is generated by frictional heat generated between the joint surfaces.
- the bonding surfaces of the resin member and the resin member are heated to make the resin bonding layer and the thermoplastic resin of the resin member compatible with each other.
- This ultrasonic welding is advantageous for producing small and precise products.
- This vibration welding has almost no adverse effect such as damage upon joining to both the metal member and the resin member, and is advantageous when manufacturing a metal-resin joined body having a relatively large weight and volume. It is.
- the above-mentioned joining method by injection welding is performed by setting the metal member prepared as described above to a resin mold in an injection molding apparatus, then injecting molten resin, and heat of the molten resin.
- This is a method of joining by melting and compatibilizing the joining layer.
- the greatest feature of injection welding is that the cycle time is overwhelmingly shorter than other welding methods.
- the applied operating conditions depend on the type and physical properties of the thermoplastic resin forming the resin joining layer of the metal member and the resin member. Determined and set.
- the time for applying the reciprocating vibration is usually 0.2 seconds to 60 seconds, preferably Is preferably not shorter than 0.2 seconds and not longer than 15 seconds. If the vibration application time is shorter than 0.2 seconds, sufficient bonding strength may not be obtained.
- the strength does not increase further, the resin between the joint surfaces melts completely, flows out of the joint surface and becomes burrs, and as a result, the appearance defect of the joint and the thickness of the resin joint cannot be controlled. May occur.
- the resin bonding layer of the metal member and the resin member are thermally welded by injection welding, if the resin member is PP, a PP resin member such as a cylinder temperature of 230 ° C. and a mold temperature of 50 ° C. is generally injection molded. It is possible to join within the conditions.
- a metal-resin bonded body in which a metal member and a resin member made of a thermoplastic resin are integrated when manufacturing a metal-resin bonded body in which a metal member and a resin member made of a thermoplastic resin are integrated, it is more simple and versatile, and provides a stable bonding strength between bonded surfaces.
- a metal-resin bonded body having a stable bonding strength between bonding surfaces and excellent in appearance and other characteristics at a low cost when manufacturing a metal-resin bonded body in which a metal member and a resin member made of a thermoplastic resin are integrated.
- 1A and 1B are a side view and a plan view for explaining metal members prepared in Examples and Comparative Examples of the present invention.
- FIG. 2 is a side view and a plan view for explaining test pieces (metal-resin bonded bodies) prepared in Examples and Comparative Examples of the present invention.
- FIG. 4 is an explanatory diagram for explaining a fracture mode generated in a test piece in a shear tensile strength test performed in Examples and Comparative Examples of the present invention.
- Examples 1 to 13 and Comparative Examples 1 to 7 >> Hereinafter, based on an Example and a comparative example, the manufacturing method of a metal-resin conjugate
- an aluminum plate (aluminum member) made of an aluminum alloy plate (JIS A5052-H34) having a size of width 30 mm ⁇ length 90 mm ⁇ thickness 3 mm is used as the metal member.
- An olefin sheet having a width of 30 mm, a length of 90 mm and a thickness of 0.1 to 10 mm as a resin sheet for forming a resin bonding layer to be laminated on the bonding surface of the aluminum member (trade name: ADMER, manufactured by Mitsui Chemicals, Inc.)
- a polypropylene molded plate material (PP molded body) having a size of 30 mm width ⁇ 90 mm length ⁇ 3 mm thickness was used as the resin member.
- Pretreatment P1 of aluminum plate First, the aluminum plate was immersed in a 30 wt% nitric acid aqueous solution at room temperature for 5 minutes, then sufficiently washed with ion exchange water, then immersed in a 5 wt% sodium hydroxide solution at 50 ° C. for 1 minute, and further washed with water. A pretreatment was performed by immersing in a 30 wt% nitric acid aqueous solution at room temperature for 3 minutes and washing with water.
- Pretreatment of aluminum plate P2 After the pretreatment P1 was completed, a hydration treatment was performed in which the aluminum plate was further immersed in pure water at 95 ° C. for 1 minute.
- Examples 14 and 15 and Comparative Examples 8 and 9 except that the joining method was changed to the ultrasonic welding shown above, Examples 1 to 13 including the shear tensile strength test and the deep drawability evaluation test were used. It carried out similarly.
- Table 2 shows the evaluation results of the shear tensile strength test and the deep drawability evaluation test.
- Example 18 to 20 and Comparative Example 10 the same procedure as in Examples 1 to 17 was performed, including the shear tensile strength test and the deep drawability evaluation test, except that the joining method was changed to the injection welding shown above. did.
- Table 3 shows the evaluation results of the shear tensile strength test and the deep drawability evaluation test.
- the fracture mode was A, and sufficient shear tensile strength was not obtained. In contrast, in Examples 18 to 20, sufficient strength was obtained in both the shear tensile strength and the deep drawability.
- the film thickness of the resin joining layer is as follows. It was found that the range of 0.05 to 8 mm is suitable.
- the method for producing a metal-resin bonded body of the present invention is a simple and versatile heat welding process in which a metal member and a resin member are integrated and a metal-resin bonded body having stable bonding strength is easily industrially produced. Can be manufactured.
- the metal-resin bonded body of the present invention has a stable bonding strength at the bonding surface and is excellent in appearance and other characteristics, so it can be used for various sensor parts for automobiles, parts for home appliances, parts for industrial equipment. It can utilize suitably for manufacture of various components, such as.
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- Engineering & Computer Science (AREA)
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- Lining Or Joining Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
また、本発明は、このような方法で得られた金属-樹脂接合体である。
例えば、前記振動溶着により金属部材の樹脂接合層と樹脂部材との間を熱溶着する場合、往復振動を与える時間(すなわち、振動付与時間)については、通常0.2秒以上60秒以下、好ましくは0.2秒以上15秒以下であるのがよく、この振動付与時間が0.2秒より短いと十分な接合強度が得られない場合があり、反対に、60秒より長くしても接合強度が更に高くなることがなく、接合面間の樹脂同士が完全に融解し、接合面外に流出してバリとなり、結果として接合部の外観不良及び樹脂接合部の厚みを制御できない等という不具合が発生する虞がある。
また、射出溶着により金属部材の樹脂接合層と樹脂部材を熱溶着する場合、樹脂部材がPPであれば、シリンダ温度230℃及び金型温度50℃等の一般的にPP樹脂部材が射出成形される条件内で接合させることが可能である。
また、接合面間に安定した接合強度を有すると共に外観等の特性に優れた金属-樹脂接合体を低コストで提供することができる。
以下、実施例及び比較例に基づいて、本発明の金属-樹脂接合体の製造方法及び金属-樹脂接合体を具体的に説明する。
なお、以下の実施例及び比較例においては、金属部材として幅30mm×長さ90mm×厚さ3mmの大きさのアルミニウム合金板(JIS A5052-H34)からなるアルミ板材(アルミ部材)を用い、また、このアルミ部材の接合面に積層する樹脂接合層を形成するための樹脂シートとして幅30mm×長さ90mm×厚さ0.1~10mmの大きさのオレフィンシート(三井化学社製商品名:アドマー)を用い、更に、樹脂部材として幅30mm×長さ90mm×厚さ3mmの大きさのポリプロピレン成形板材(PP成形体)を用いた。
先ず、アルミ板材を30wt%-硝酸水溶液に常温で5分間浸漬し、次いでイオン交換水で十分に水洗した後、5wt%-水酸化ナトリウム溶液に50℃で1分間浸漬し、更に水洗した後、30wt%-硝酸水溶液に常温で3分間浸漬して水洗する前処理を施した。
上記の前処理P1が終了した後に、更にアルミ板材を95℃の純水に1分間浸漬する水和処理を施した。
上記の前処理P1が終了した後に、更にアルミ板材を50℃のリン酸クロメート液に10秒間浸漬する三価クロメート処理を施した。
上記の前処理A又はBが終了した後のアルミ板材に対して、その片面側全面に厚さの異なるオレフィンシートを重ね合わせ、これをホットプレス機(アズワン製ホットプレス機)にセットし、140℃で30秒間加圧する条件でホットプレスし、図1に示すように、アルミ板材2aの片面側にオレフィンシート(樹脂接合層)2bが積層されたアルミ樹脂積層板材2を作製した。
各実施例及び比較例において使用されたオレフィンシート(樹脂接合層)の膜厚(mm)を表1に示す。
次に、作製したアルミ樹脂積層板材2のオレフィンシート(樹脂接合層)2b上に上記のPP成形体(樹脂部材)3を重ね合わせ、これを振動溶着機(精電社社製:VL-1900)にセットし、周波数238.2Hz及び最大振1.6mmの往復振動を加圧力5~7MPa及び振動付与時間0.1~10秒間の条件下に加え、図2に示すように、アルミ板材の接合面にPP成形体が接合された試験片(金属-樹脂接合体)1を作製した。
各実施例及び比較例において適用された加圧力(MPa)及び振動付与時間(sec.)を表1に示す。
以上のようにして得られた各実施例及び比較例の試験片(金属-樹脂接合体)1について、せん断引張り強度試験装置(島津製作所社製:オートグラフ)を用い、図3に示すように、アルミ部材2側とPP成形体3側との間に引張力を作用させ、各試験片が破断した時の破断荷重(N)を測定すると共に、このせん断引張り強度試験後の試験片が図4に示す破壊形態A~Cのいずれの形態で破壊したかを調べて、各試験片のせん断引張り強度を評価した。
このせん断引張り強度の評価は、×:図4に示す破壊形態Aの場合、○:図4に示す破壊形態Bの場合、及び、◎:図4に示す破壊形態Cの場合の3段階で行った。結果を表1に示す。
また、金属部材として幅100mm×長さ100mm×厚さ3mmの大きさの前記アルミ板材(アルミ部材)を用い、また、樹脂シートとして幅100mm×長さ100mm×厚さ0.6mmの大きさの前記オレフィンシートを用い、更に、樹脂部材として幅100mm×長さ100mm×厚さ3mmの大きさの前記PP成形体を用いて、上記の各実施例及び比較例の場合と同様にして深絞り用試験片(金属-樹脂接合体)を調製し、これら各深絞り用試験片について、深絞り性評価試験機(エリクセン社製:エリクセン試験機)を用い、各試験片をエリクセン試験機のダイスとシワ押えの間に挿入し、シワ押え圧270kg及び試験速度3ノッチの条件下に半球状ポンチで各試験片を押圧し、各試験片を完全なカップ形状に成形した。その後、カップ形状に成形された各試験片について、その全体を詳細に観察し、○:各部に亀裂が無い場合、及び、×:いずれかの部分に亀裂が存在する場合として評価した。結果を表1に示す。
接合強度(せん断引張り強度)試験及び深絞り性評価試験の結果を示す表1に示す結果から明らかなように、オレフィンシート(樹脂接合層)の膜厚が0.05mmの比較例1及び2においては、振動溶着の際の振動付与時間が0.5秒又は3秒の場合に、いずれも破壊形態がA評価であって、十分なせん断引張り強度が得られず(比較例1及び2)、これに対して、樹脂接合層の膜厚が0.2~0.5mmである実施例1~6においては、振動溶着の際の振動付与時間(0.5~3秒)に関わらず、せん断引張り強度及び深絞り性が共に良好であった。
次に、作製したアルミ樹脂積層板材2のオレフィンシート(樹脂接合層)2b上に上記のPP成形体(樹脂部材)3を重ね合わせ、これを超音波溶着機(TELSONIC社製:USP-2000)にセットし、周波数20kHz、振幅50%、溶着時間1秒の条件下にて超音波溶着を行い、図2に示すように、アルミ板材の接合面にPP成形体が接合された試験片(金属-樹脂接合体)1を作製した。
せん断引張り強度試験及び深絞り性評価試験の評価結果を表2に示す。
次に、作製したアルミ樹脂積層板材2のオレフィンシート(樹脂接合層)2bを射出成形機(NISSEI社製ST10R2V)内の金型にセットし、PP樹脂を射出時間(保圧時間を含む)5秒、射出速度60mm/秒、保圧力90MPa、シリンダ温度280℃、及び金型温度50℃の成形条件で射出成形し、図2に示すように、アルミ板材の接合面にPP成形体が接合された試験片(金属-樹脂接合体)1を作製した。
せん断引張り強度試験及び深絞り性評価試験の評価結果を表3に示す。
また、本発明の金属-樹脂接合体は、接合面において安定した接合強度を有すると共に外観等の特性にも優れているので、自動車用各種センサーの部品、家庭電化製品の部品、産業機器の部品等の各種部品の製造に好適に利用可能である。
Claims (12)
- 金属部材と熱可塑性樹脂製の樹脂部材とを接合して金属-樹脂接合体を製造する方法であり、金属部材の接合面に予め前記樹脂部材と相溶性を有する熱可塑性樹脂からなる膜厚0.01~9mmの樹脂接合層を積層し、前記金属部材の樹脂接合層と前記樹脂部材との接合面間を熱溶着により接合することを特徴とする金属-樹脂接合体の製造方法。
- 前記樹脂接合層が、予め前記樹脂部材と相溶性を有する熱可塑性樹脂製の樹脂シートの接着により形成されていることを特徴とする請求項1に記載の金属-樹脂接合体の製造方法。
- 前記樹脂接合層は、前記金属部材の表面に対して樹脂シートをラミネート接着して形成されていることを特徴とする請求項2に記載の金属-樹脂接合体の製造方法。
- 前記樹脂シートのラミネート接着による樹脂接合層の形成に先駆けて、前記金属部材の表面に酸水溶液を用いる洗浄処理からなる前処理を施すことを特徴とする請求項1~3のいずれかに記載の金属-樹脂接合体の製造方法。
- 前記樹脂シートのラミネート接着による樹脂接合層の形成に先駆けて、前記金属部材の表面に酸水溶液を用いる洗浄処理からなる前処理を施した後に、前記金属部材の表面に水和処理、ジンケート処理、及び三価クロメート処理から選ばれたいずれかの前処理を施すことを特徴とする請求項4に記載の金属-樹脂接合体の製造方法。
- 前記金属部材の樹脂接合層と前記樹脂部材との間の熱溶着が、前記樹脂接合層と樹脂部材との接合面を相互に押圧し、相対運動により摩擦熱を発生させて加熱する接合方法であることを特徴とする請求項1~5のいずれかに記載の金属-樹脂接合体の製造方法。
- 前記熱溶着による接合方法が振動溶着であって、前記樹脂接合層の膜厚が0.1~9mmであることを特徴とする請求項6に記載の金属-樹脂接合体の製造方法。
- 前記熱溶着による接合方法が超音波溶着であって、前記樹脂接合層の膜厚が0.01~1mmであることを特徴とする請求項6に記載の金属-樹脂接合体の製造方法。
- 前記熱溶着による接合方法が射出溶着であって、前記樹脂接合層の膜厚が0.05~9mmであることを特徴とする請求項6に記載の金属-樹脂接合体の製造方法。
- 前記金属部材がアルミニウム又はアルミニウム合金からなるアルミ部材であり、また、前記樹脂接合層及び樹脂部材がオレフィン系樹脂であることを特徴とする請求項1~9のいずれかに記載の金属-樹脂接合体の製造方法。
- 前記樹脂接合層及び前記樹脂部材が、ポリプロピレン及び/又はポリエチレンであることを特徴とする請求項10に記載の金属-樹脂接合体の製造方法。
- 請求項1~11のいずれかに記載の製造方法により製造された金属-樹脂接合体。
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JP2020078945A (ja) * | 2015-11-13 | 2020-05-28 | 三菱エンジニアリングプラスチックス株式会社 | 樹脂金属複合体及びその製造方法 |
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WO2021059996A1 (ja) | 2019-09-26 | 2021-04-01 | 東亞合成株式会社 | 接着剤組成物、及び接着方法 |
KR20220047339A (ko) | 2019-09-26 | 2022-04-15 | 도아고세이가부시키가이샤 | 접착제 조성물 및 접착 방법 |
KR20220047340A (ko) | 2019-09-26 | 2022-04-15 | 도요보 가부시키가이샤 | 적층체 |
KR20220049543A (ko) | 2019-09-26 | 2022-04-21 | 도요보 가부시키가이샤 | 연료 전지용 접합체 및 적층체 |
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CN104936763A (zh) | 2015-09-23 |
MY170538A (en) | 2019-08-15 |
JPWO2014112506A1 (ja) | 2017-01-19 |
CN104936763B (zh) | 2018-12-07 |
JP2017109496A (ja) | 2017-06-22 |
JP6079791B2 (ja) | 2017-02-15 |
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