WO2017090394A1 - 接合構造体 - Google Patents

接合構造体 Download PDF

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Publication number
WO2017090394A1
WO2017090394A1 PCT/JP2016/082522 JP2016082522W WO2017090394A1 WO 2017090394 A1 WO2017090394 A1 WO 2017090394A1 JP 2016082522 W JP2016082522 W JP 2016082522W WO 2017090394 A1 WO2017090394 A1 WO 2017090394A1
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WO
WIPO (PCT)
Prior art keywords
laser
resin member
resin
component
absorbing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/082522
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English (en)
French (fr)
Japanese (ja)
Inventor
佐藤　大輔
和義 西川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Corp
Omron Tateisi Electronics Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Omron Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Priority to EP16868343.1A priority Critical patent/EP3381682B1/en
Priority to CN201680046498.2A priority patent/CN107848276B/zh
Publication of WO2017090394A1 publication Critical patent/WO2017090394A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • 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
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • 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
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • 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
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • 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
    • 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
    • B29C66/341—Measures for intermixing the material of the joint interlayer
    • 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
    • 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
    • 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
    • B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/043—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00—Thermoplastic elastomer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties

Definitions

  • the present invention relates to a bonded structure in which different types of resin members are bonded to each other, and more particularly to a bonded structure in which a laser-transmitting resin member and a laser-absorbing resin member are laser-bonded.
  • Patent Document 1 discloses a first resin molded body composed of a first thermoplastic resin and a second resin composed of a second thermoplastic resin. It is disclosed that at least one of the molded bodies contains a compatibilizer for the first and second thermoplastic resins, and the first resin molded body and the second resin molded body are joined by laser irradiation. ing. According to this Patent Document 1, since the compatibilizing agent is contained in the thermoplastic resin composition constituting at least one of the resin molded bodies to be joined, it can be applied to a wide range of resin combinations and has a joining strength. It is said that can be greatly improved.
  • the compatibilizing agent which has compatibility with the 1st and 2nd thermoplastic resin since the compatibilizing agent which has compatibility with the 1st and 2nd thermoplastic resin is contained, the component which is not compatible with the 1st thermoplastic resin is 2nd resin. Even when included in the molded body, the first resin molded body and the second resin molded body can be joined by laser irradiation.
  • the compatibilizing agent is limited to some extent, and accordingly, the combination of resins is naturally limited, so that it can be applied to a wide range of resin combinations. It's hard to say.
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a bonding structure composed of a laser-transmitting resin member and a laser-absorbing resin member and is compatible with the laser-transmitting resin member. Even in the case where a laser-absorbing resin member contains a resin component that does not have a resin, a technique for firmly bonding the two is provided.
  • the resin component having compatibility with the laser-transmitting resin member is not limited to being contained in the laser-absorbing resin member, and the abundance ratio of the resin component in the bonded portion. To increase.
  • the present invention is a bonded structure composed of a laser-transmitting resin member and a laser-absorbing resin member, and the laser-absorbing resin member is compatible with the laser-transmitting resin member.
  • An abundance ratio of the second resin component in the melt-solidified portion is higher than an abundance ratio of the second resin component in the laser-absorbing resin member.
  • the “laser transmitting resin member” means a resin member that transmits the irradiated laser beam, and the “laser absorbing resin member” generates heat by absorbing the irradiated laser beam. It means a resin member.
  • compatible means laser bondability.
  • “Compatible” means, for example, that when a laser beam is irradiated from the laser-transmitting resin member side to the laser-transmitting resin member and the laser-absorbing resin member that are in close contact with each other, It means that the laser-transmitting resin member and the laser-absorbing resin member can be joined (welded) when the absorbed laser-absorbing resin member generates heat.
  • the second resin component having compatibility (laser bondability) with the laser-transmitting resin member is included in the laser-absorbing resin member, it is not compatible with the laser-transmitting resin member. Even when the first resin component is contained in the laser-absorbing resin member, the laser-transmitting resin member and the laser-absorbing resin member can be joined.
  • the second resin component among the resin components contained in the laser-absorbing resin member is relatively present in the joint between the laser-transmitting resin member and the laser-absorbing resin member, the laser-transmitting resin member And the laser-absorbing resin member can be firmly bonded.
  • the second resin component among the resin components contained in the laser-absorbing resin member is relatively present in the joint between the laser-transmitting resin member and the laser-absorbing resin member, the laser-transmitting resin member And the laser-absorbing resin member can be firmly bonded.
  • the second resin component among the resin components contained in the laser-absorbing resin member is relatively present in the joint between the laser-transmitting resin member and the laser-absorbing resin member, the laser-transmitting resin member And the laser-absorbing resin member can be firmly bonded.
  • the laser-transmissible resin member and the laser absorptivity It is possible to reliably improve the bonding strength with the resin member.
  • the present invention not only the characteristics of the second resin component having compatibility with the laser-transmitting resin member but also the ratio of the second resin component in the bonded portion is increased to increase the bonding strength. Accordingly, the options for the second resin component are widened, and accordingly, it can be applied to a wide range of resin combinations.
  • the second resin component in the joint portion is, for example, adjusting the output of the laser beam or as the second resin component than the first resin component. Since the second resin component easily oozes out to the bonding interface of the laser-absorbing resin member by selecting one having a low molecular weight (high fluidity), it can be easily realized. However, if the ratio of the second resin component in the laser-absorbing resin member is too low, the amount of oozing out of the second resin component is reduced, so that the bonding strength between the laser-transmitting resin member and the laser-absorbing resin member is increased. It may be difficult to improve.
  • the abundance ratio of the second resin component in the laser-absorbing resin member is preferably 5% by weight or more.
  • the idea of improving the bonding strength by causing a relatively large amount of a resin component compatible with the laser-transmitting resin member to be present in the bonding portion between the laser-transmitting resin member and the laser-absorbing resin member is The present invention can also be applied when the absorbent resin member is a polymer alloy having a sea-island structure (matrix domain structure).
  • the present invention is a bonded structure composed of a laser-transmitting resin member and a laser-absorbing resin member, and the laser-absorbing resin member is compatible with the laser-transmitting resin member. It has a sea-island structure in which the first resin component that does not have is a sea component and the third resin component that is compatible with the laser-transmissive resin member is an island component, and the laser-transmissive resin member and the first resin A polymer alloy containing a dispersion material compatible with the component, wherein the absorptance ratio of the dispersion material in a melt-solidified portion constituting a joint portion between the laser-transmitting resin member and the laser-absorbing resin member is determined by the laser absorption It is characterized by being higher than the abundance ratio of the dispersing material in the conductive resin member.
  • the polymer alloy having a sea-island structure in which the first resin component is the sea component and the third resin component is the island component is used as the laser-absorbing resin member, the advantages of the first resin component and the third A joint structure having the advantages of the resin component (complementing the disadvantages of the first resin component and the third resin component) can be realized.
  • the second resin component when the second resin component is compatible with the first resin component, the second resin component can be used as a dispersion material. That is, the configuration using the polymer alloy having the sea-island structure as the laser-absorbing resin member (later invention) uses the configuration including the first resin component and the second resin component as the laser-absorbing resin member (the previous one). In the invention, it can be said that the second resin component is compatible with the first resin component and the laser-absorbing resin member contains the third resin component.
  • the ratio of the dispersing material in the laser-absorbing resin member is 5% by weight or more for the same reason as in the previous invention.
  • the laser-absorbing resin member contains a resin component that is not compatible with the laser-transmitting resin member, the laser-transmitting resin member and the laser absorbing member are included.
  • the strong resin member can be firmly bonded.
  • FIG. 1 is a partial enlarged cross-sectional view schematically showing a joint portion 4 and its vicinity in the joint structure 1 according to the present embodiment.
  • FIG. 1 is a cross-sectional view, hatching of the laser transmissive resin member 2 is omitted for easy understanding of the drawing.
  • size of the 2nd resin component 6 is exaggerated, in fact, the magnitude
  • the joining structure 1 is composed of a laser-transmitting resin member 2 made of a thermoplastic resin and a laser-absorbing resin member 3 also made of a thermoplastic resin. More specifically, the bonding structure 1 is configured such that the laser-transmitting resin member 2 and the laser-absorbing resin member 3 are placed facing each other, pressed and brought into surface contact, and then the laser-transmitting resin member 2 is subjected to laser irradiation from the laser-transmitting resin member 2 side. By irradiating the beam, the surface portion in contact with the surface is melted and solidified, and both 2 and 3 are joined.
  • the laser-absorbing resin member 3 is compatible with the first resin component 5 that is not compatible with the thermoplastic resin that constitutes the laser-transmissive resin member 2 and the thermoplastic resin that constitutes the laser-transmissive resin member 2.
  • a second resin component 6 As described above, the laser-transmitting resin member 2 and the laser-absorbing resin member 3 are included even though the laser-absorbing resin member 3 includes the first resin component 5 that is not compatible with the laser-transmitting resin member 2. It is one of the features of the joint structure 1 of the present embodiment that the joint 3 is firmly joined.
  • compatible means laser bondability.
  • “Compatible” means that, for example, when the laser-transmitting resin member 2 and the laser-absorbing resin member 3 brought into surface contact with each other are irradiated with a laser beam from the laser-transmitting resin member 2 side, It means that the laser-absorbing resin member 2 and the laser-absorbing resin member 3 can be joined by generating heat by the laser-absorbing resin member 3 that has absorbed the laser beam.
  • thermoplastic resin constituting the laser transmissive resin member 2 and the thermoplastic resin constituting the first resin component 5 in the laser absorbing resin member 3 examples include PVC (polyvinyl chloride), PS (polystyrene), AS (acrylonitrile styrene), ABS (acrylonitrile butadiene styrene), PMMA (polymethyl methacrylate), PE (polyethylene), PP (polypropylene), PC (polycarbonate), m-PPE (modified polyphenylene ether), PA6 (polyamide) 6), PA66 (polyamide 66), POM (polyacetal), PET (polyethylene terephthalate), PBT (polybutylene terephthalate), PSF (polysulfone), PAR (polyarylate), PEI (polyetherimide), PPS (polyether imide) Phenylene sulfide), PES (polyether
  • the laser-transmitting resin member 2 and the first resin component 5 may be TPE (thermoplastic elastomer).
  • TPE thermoplastic elastomer
  • examples of TPE include TPO (olefin-based), TPS (styrene-based), TPEE (ester-based). ), TPU (urethane-based), TPA (nylon-based) and TPVC (vinyl chloride-based).
  • a filler may be added to these thermoplastic resins and thermoplastic elastomers.
  • the filler include inorganic fillers (glass fibers, inorganic salts, etc.), metal fillers, organic fillers, and carbon fibers.
  • the laser transmissive resin member 2 is required to transmit a laser beam, it is preferable to use natural materials of these thermoplastic resins and thermoplastic elastomers.
  • the laser transmissive resin member 2 is colored, it is preferable to use a dye that transmits the laser beam rather than a pigment that absorbs and scatters the laser beam.
  • the first resin component 5 in the laser-absorbing resin member 3 includes these thermoplastic resins and thermoplastics. It is preferable to use an elastomer to which a laser absorbing dye such as carbon black is added.
  • the second resin component 6 in the laser-absorbing resin member 3 for example, a modified polymer, a block polymer, a graft polymer, or the like having a polar group at a molecular terminal or a side chain is preferable.
  • the second resin component 6 include PP (polypropylene), PE (polyethylene), SEBS (styrene / ethylene / butylene / styrene copolymer), PS (polystyrene), AS (acrylonitrile / styrene), ABS.
  • modified products such as maleic anhydride, glycidyl methacrylate, oxazoline (epoxy-modified), and imide-modified using (acrylonitrile / butadiene / styrene copolymer) as a backbone polymer.
  • thermoplastic resin constituting the laser transmissive resin member 2 is PMMA
  • PA polyamide
  • acid-modified ABS maleic anhydride of ABS
  • thermoplastic resin constituting the laser transmissive resin member 2 is also PMMA
  • PBT when used as the first resin component 5, acid-modified ABS can be used as the second resin component 6.
  • the acid-modified ABS is not only compatible with PMMA constituting the laser transmissive resin member 2, but also compatible with PA and PBT which are the first resin component 5.
  • the bonding structure 1 is configured such that the laser-transmitting resin member 2 and the laser-absorbing resin member 3 face each other and are pressed and brought into surface contact. It is formed by irradiating a laser beam from the side. In this laser irradiation, the temperature of the bonding interface of the laser-absorbing resin member 3 that has generated heat by absorbing the laser beam and the vicinity thereof are in a state in which both the first resin component 5 and the second resin component 6 can melt and flow. Thermal control is performed so that the temperature becomes equal to or higher than the temperature and equal to or lower than the resin decomposition temperature.
  • the bonding portion 4 between the laser transmissive resin member 2 and the laser absorbing resin member 3 in the bonding structure 1 is a bonding interface between the laser transmissive resin member 2 and the laser absorbing resin member 3 and its vicinity. Is formed by a melted and solidified portion that is solidified in a state where the melted laser transmitting resin member 2 and the laser absorbing resin member 3 are mixed.
  • the laser-transmitting resin member 2 and the laser-absorbing resin member 3 are not simply mixed in the bonded portion 4, but the second resin component 6 in the bonded portion 4. Is higher than the existing ratio of the second resin component 6 in the laser-absorbing resin member 3 (bulk).
  • the bonded structure 1 is configured such that the ratio of the second resin component 6 in the bonded portion 4 is 30% by weight or more.
  • the second resin component 6 having compatibility with the laser transmissive resin member 2 is relatively contained in the bonding portion 4, thereby causing a diffusion phenomenon of the second resin component 6.
  • the laser-transmitting resin member 2 and the laser-absorbing resin member 3 are firmly connected to each other even though the first resin component 5 that is not compatible with the laser-transmitting resin member 2 is included in the laser-absorbing resin member 3. Can be joined.
  • the second resin component 6 can be easily realized by selecting one having a molecular weight smaller than that of the first resin component 5. That is, if the second resin component 6 having a molecular weight smaller than that of the first resin component 5 is selected, the molecular weight is small when the bonding interface of the laser-absorbing resin member 3 and its vicinity are melted by suitable laser irradiation.
  • the second resin component 6 that is easy to move (highly fluid) oozes out to the bonding interface of the laser-absorbing resin member 3 and gathers at the bonding portion 4, so the ratio of the second resin component 6 in the bonding portion 4 is easy. Can be increased.
  • the second resin component 6 oozes out only at the bonding interface that generates heat by absorbing the laser beam and the vicinity thereof, and the second resin component 6 at other portions of the laser-absorbing resin member 3. No movement of 6 occurs. Thereby, the joining structure 1 comprised by the laser-transmitting resin member 2 and the laser-absorbing resin member 3 can be formed without changing the property on the laser-absorbing resin member 3 side.
  • the abundance ratio of the second resin component 6 in the laser-absorbing resin member 3 is preferably 5% by weight or more, and more preferably 20% by weight or more.
  • FIG. 2 is a partial enlarged cross-sectional view schematically showing the joint portion 14 and the vicinity thereof in the joint structure 11 according to the present embodiment.
  • FIG. 2 is a cross-sectional view, hatching of the laser transmissive resin member 12 is omitted for easy understanding of the drawing.
  • size of the 3rd resin component 17 which is an island component is exaggerated, in fact, the magnitude
  • the joining structure 11 is composed of a laser-transmitting resin member 12 made of a thermoplastic resin and a laser-absorbing resin member 13 also made of a thermoplastic resin.
  • the laser-absorbing resin member 13 uses the first resin component 15 that is not compatible with the thermoplastic resin constituting the laser-transmitting resin member 12 as a sea component, and is compatible with the thermoplastic resin that constitutes the laser-transmitting resin member 12. It is configured as a polymer alloy having a sea-island structure (matrix domain structure) using the soluble third resin component 17 as an island component.
  • the ratio of the first resin component 15 that is a sea component and the third resin component 17 that is an island component is, for example, 3: 7.
  • the laser absorbing resin member 13 includes a dispersion material 16 in order to create a state in which the first resin component 15 and the third resin component 17 are mixed so as to form a sea-island structure.
  • thermoplastic resin and the thermoplastic elastomer constituting the laser transmissive resin member 12 and the first and third resin components 15 and 17 are the heat constituting the laser transmissive resin member 2 and the first resin component 5 in the first embodiment. It is the same as that of a plastic resin or a thermoplastic elastomer. Thus, it is preferable to use the thermoplastic resin and the natural material of thermoplastic elastomer as the laser transmissive resin member 12. On the other hand, as the first and third resin components 15 and 17, it is preferable to use the above-described thermoplastic resin and thermoplastic elastomer to which a laser-absorbing dye such as carbon black is added.
  • the dispersion material 16 used in the present embodiment includes a resin component having compatibility with the thermoplastic resin constituting the laser transmissive resin member 12 and a resin component having compatibility with the first resin component 15. .
  • a dispersing material for example, a modified polymer, a block polymer, and a graft polymer having a polar group at a molecular terminal or a side chain are preferable.
  • examples of such a dispersing material 16 include PP (polypropylene), PE (polyethylene), SEBS (styrene / ethylene / butylene / styrene copolymer), PS (polystyrene), AS (acrylonitrile / styrene), ABS (acrylonitrile).
  • modified products such as maleic anhydride, glycidyl methacrylate, oxazoline (epoxy-modified), and imide-modified using butadiene / styrene copolymer) as a backbone polymer.
  • the first resin component 15 having no compatibility with the thermoplastic resin constituting the laser transmissive resin member 12 exemplified above, the third resin component 17 having compatibility, and the dispersion material 16 Since there are a wide variety of combinations, it is omitted to list each specific example one by one, and only two specific examples are shown here.
  • the thermoplastic resin constituting the laser transmissive resin member 12 is PMMA, for example, PA (polyamide) is used as the first resin component 15, ABS is used as the third resin component 17, and ABS anhydrous male is used as the dispersing material 16.
  • An acid hereinafter also referred to as acid-modified ABS
  • the thermoplastic resin constituting the laser transmissive resin member 12 is also PMMA, when PBT is used as the first resin component 15, ABS is used as the third resin component 17, and acid-modified ABS is used as the dispersion material 16. Can be used.
  • the bonded structure 11 of the present embodiment is configured such that the laser-transmitting resin member 12 and the laser-absorbing resin member 13 are placed facing each other, pressed and brought into surface contact, and then the laser beam is transmitted from the laser-transmitting resin member 12 side. It is formed by irradiating. In this laser irradiation, thermal control is performed so that the first and third resin components 15 and 17 and the dispersion material 16 are melted and flowable and are not less than the resin decomposition temperature.
  • the bonding structure 11 is configured such that the ratio of the dispersion material 16 in the bonding portion 14 is 30% by weight or more.
  • the dispersion material 16 having compatibility with the laser-transmitting resin member 12 is relatively included in the joint portion 14, so that the first not having compatibility with the laser-transmitting resin member 12.
  • the resin component 15 is included in the laser-absorbing resin member 13, the laser-transmitting resin member 12 and the laser-absorbing resin member 13 can be firmly bonded.
  • the third resin component 17 which is an island component is also compatible with the laser transmissive resin member 12, even if the dispersion material 16 is not present, the laser transmissive resin member 12 and the laser absorptive resin member are provided.
  • the third resin component 17 having a molecular weight that is usually larger than that of the dispersion 16 remains in the bulk as an island component without actively moving to the bonding interface. It was confirmed from the experiment. However, the contribution of the third resin component 17 to the bonding strength is not denied. For example, laser irradiation is performed so that the third resin component 17 has a movable temperature within a range equal to or lower than the resin decomposition temperature, and the dispersion material. Due to the synergistic effect of 16 and the third resin component 17, the bonding strength between the laser-transmitting resin member 12 and the laser-absorbing resin member 13 may be increased.
  • the dispersion material 16 oozes out only at the bonding interface of the laser-absorbing resin member 13 that generates heat by absorbing the laser beam and the vicinity thereof, and other portions of the laser-absorbing resin member 13. Then, the dispersion material 16 does not move. Thereby, the joining structure 11 comprised by the laser transparent resin member 12 and the laser absorptive resin member 13 can be formed, without changing the property of the polymer alloy which has a sea island structure.
  • the ratio of the dispersing material 16 in the laser-absorbing resin member 13 is preferably 5% by weight or more, and more preferably 20% by weight or more. preferable.
  • the resin component having compatibility with the laser-transmitting resin member 22 is included in the laser-absorbing resin member 23, and the joint 24 between the laser-transmitting resin member 22 and the laser-absorbing resin member 23 is used. Then, whether the bonding strength is improved by the presence ratio of the resin component being higher than the existence ratio in the laser-absorbing resin member 23 (bulk) was examined.
  • ten plate-shaped laser-transmitting resin members 22 made of a natural material of PMMA (polymethyl methacrylate) having a length of 100 mm, a width of 17.5 mm, and a thickness of 1 mm were prepared. Further, a plate-like laser-absorbing resin member 23 having a length of 100 mm ⁇ width of 17.5 mm ⁇ thickness of 2 mm, which includes PA (polyamide) added with carbon black, and PBT (polybutylene terephthalate) added with carbon black 5 plate-like laser-absorbing resin members 23 each having a length of 100 mm, a width of 17.5 mm, and a thickness of 2 mm were prepared.
  • PA polyamide
  • PBT polybutylene terephthalate
  • the breakdown of the laser-absorbing resin member 23 containing PA is one sheet composed of only PA, two sheets composed of PA and acid-modified ABS as the second resin component 6, and ABS as a sea component. Two sheets were composed of a polymer alloy having a sea-island structure containing acrylonitrile-butadiene-styrene copolymer) as an island component and acid-modified ABS as the dispersion material 16. As the second resin component 6 or the dispersion material 16 containing acid-modified ABS, one having an acid-modified ABS content of 20% was used.
  • the breakdown of the laser-absorbing resin member 23 containing PBT is one sheet made of PBT alone, two sheets made of PBT and acid-modified ABS as the second resin component 6, and ABS with PBT as a sea component. Two were composed of a polymer alloy having a sea-island structure with an island component and acid-modified ABS as the dispersion 16. As the second resin component 6 or the dispersion material 16 containing acid-modified ABS, one having an acid-modified ABS content of 20% was used.
  • the laser-transmitting resin member 22 and the laser-absorbing resin member 23 are placed facing each other, pressed and brought into surface contact, and then laser-transmitting resin under the laser irradiation condition 1 or 2 below.
  • the laser beam 30 from the member 22 side the surface portion in contact with the surface was melted and solidified, and 10 specimens 21 in which both 22 and 23 were joined were produced.
  • the specimen 21 produced under the laser irradiation condition 1 containing PA as the first resin component 5 and acid-modified ABS as the second resin component 6 in the laser-absorbing resin member 23 was designated as Invention Example 1.
  • an experimental example using the specimen 21 produced under the laser irradiation condition 1 including PBT as the first resin component 5 and acid-modified ABS as the second resin component 6 in the laser-absorbing resin member 23 was set as invention example 3.
  • the inventive examples 1 and 3 correspond to the joint structure 1 of the first embodiment.
  • PA as the first resin component 15, ABS as the third resin component 17, and acid-modified ABS as the dispersion material 16 are included in the laser-absorbing resin member 23, and are manufactured under the laser irradiation condition 1.
  • An experimental example using the specimen 21 was defined as Invention Example 2.
  • An experimental example using this was designated as Invention Example 4.
  • the inventive examples 2 and 4 correspond to the joint structure 11 of the second embodiment.
  • the same resin component as in Invention Example 1, Invention Example 2, Invention Example 3 and Invention Example 4 is contained in the laser-absorbing resin member 23, and in other words, in laser irradiation condition 2, in other words, Examples 1 to Comparative Examples 1, Comparative Example 2, Comparative Example 3, and Comparative Example 4 were respectively used as test examples using the specimen 21 produced with a laser output lower than 4.
  • Examples 1 to Comparative Examples 1, Comparative Example 2, Comparative Example 3, and Comparative Example 4 were respectively used as test examples using the specimen 21 produced with a laser output lower than 4.
  • an experimental example using the specimen 21 including PA as the first resin component 5 in the laser-absorbing resin member 23 and manufactured under the laser irradiation condition 1 is a comparative example.
  • 5 and Comparative Example 6 was an experimental example in which PBT as the first resin component 5 was included in the laser-absorbing resin member 23 and the specimen 21 manufactured under the laser irradiation condition 1 was used.
  • present invention examples 1 to 4 and comparative examples 1 to 6 were evaluated for bonding, and the present invention examples 1 to 4 and comparative examples 1 to 4 were measured for the presence ratio of acid-modified ABS in the bonded portion 24.
  • Comparative Examples 1 and 3 no acid-modified ABS oozes out, and only the laser-transmitting resin member 22 and the laser-absorbing resin member 23 are bonded by the acid-modified ABS present at the bonding interface. It was. For this reason, Comparative Examples 1 and 3 were peeled off immediately or were easily peeled off when they were naturally dropped from a height of 1 m.
  • the acid-modified ABS in the joint 24 is also used in Comparative Examples 2 and 4 using the specimen 21 respectively prepared under the laser irradiation condition 2 even if it contains ABS having compatibility with PMMA. It was confirmed that the abundance ratio of was 20%. For this reason, Comparative Examples 2 and 4 were peeled off immediately or were easily peeled off when they were naturally dropped from a height of 1 m.
  • Examples 2 and 4 of the present invention using specimens 21 each containing soluble ABS and prepared under laser irradiation condition 1 the abundance ratio of acid-modified ABS in the joint 24 is 30 to 40%.
  • the inventive examples 1 to 4 using the specimen 21 produced with a relatively high laser output the acid-modified ABS that easily moves in the molten state oozes out to the bonding interface of the laser-absorbing resin member 23, It was confirmed that it contributes positively to the joining with the laser transmissive resin member 22. For this reason, none of the inventive examples 1 to 4 was peeled off even when they were naturally dropped from a height of 1 m.
  • the bonded structures 1 and 11 according to the present invention even when the laser-absorbing resin members 3 and 13 include a component that is not compatible with the laser-transmitting resin members 2 and 12, It was confirmed that the resin members 2 and 12 and the laser-absorbing resin members 3 and 13 can be firmly joined.
  • acid-modified ABS is exemplified as both the second resin component 6 and the dispersion material 16, but the present invention is not limited to this, and the second resin component 6 and the dispersion material 16 may be different resin components.
  • the laser-transmitting resin member contains a component that is not compatible with the laser-transmitting resin member, the laser-transmitting resin member and the laser-absorbing resin member can be firmly bonded.
  • the present invention is extremely useful when applied to a bonded structure composed of a laser-transmitting resin member and a laser-absorbing resin member.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laser Beam Processing (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
PCT/JP2016/082522 2015-11-26 2016-11-02 接合構造体 Ceased WO2017090394A1 (ja)

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JP7659882B2 (ja) * 2020-12-25 2025-04-10 地方独立行政法人東京都立産業技術研究センター 加工プラスチック材の製造方法及び加工プラスチック材

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EP3381682B1 (en) 2023-03-29
JP2017094630A (ja) 2017-06-01
EP3381682A4 (en) 2019-07-10
JP6500757B2 (ja) 2019-04-17
CN107848276A (zh) 2018-03-27
CN107848276B (zh) 2019-07-16
EP3381682A1 (en) 2018-10-03

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