WO2017090393A1 - Structure d'assemblage - Google Patents

Structure d'assemblage Download PDF

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Publication number
WO2017090393A1
WO2017090393A1 PCT/JP2016/082521 JP2016082521W WO2017090393A1 WO 2017090393 A1 WO2017090393 A1 WO 2017090393A1 JP 2016082521 W JP2016082521 W JP 2016082521W WO 2017090393 A1 WO2017090393 A1 WO 2017090393A1
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WO
WIPO (PCT)
Prior art keywords
laser
resin member
resin
absorbing
component
Prior art date
Application number
PCT/JP2016/082521
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English (en)
Japanese (ja)
Inventor
佐藤　大輔
和義 西川
Original Assignee
オムロン株式会社
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Publication date
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Publication of WO2017090393A1 publication Critical patent/WO2017090393A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
    • 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
    • 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
    • B29C65/1629—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
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1661—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning repeatedly, e.g. quasi-simultaneous laser 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
    • 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
    • B29C66/40—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
    • 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
    • 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
    • B29C66/70—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
    • B29C66/72—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
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • 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
    • B29C66/733—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7332—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being coloured
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0079—Liquid crystals

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.
  • a compatibilizing agent having compatibility with the first and second thermoplastic resins is contained in at least one of the first and second resin moldings. Even when the second resin molded body contains a component that is not compatible with the thermoplastic resin, the first resin molded body and the second resin molded body can be joined by laser irradiation.
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a laser transmitting resin member and a laser absorption in a joint structure composed of a laser transmitting resin member and a laser absorbing resin member. This is to firmly bond the conductive resin member.
  • the bonded structure according to the present invention uses a mechanical bonding based on the structure of the laser-absorbing resin member in addition to the chemical bonding, so that the laser-transmitting resin member and the laser are used.
  • the bonding strength with the absorbent resin member is increased.
  • 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 is a polymer alloy having a co-continuous structure containing at least one resin component.
  • 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 resin component having compatibility with the laser-transmitting resin member is included in the laser-absorbing resin member, the laser-transmitting resin member and the laser-absorbing resin member are chemically bonded at the bonding interface. Can be joined.
  • such a resin component forms a three-dimensionally continuous phase, and entangles with other resin components that form the same three-dimensionally continuous phase inside the laser-absorbing resin member.
  • the laser-transmitting resin member and the laser-absorbing resin member can be mechanically joined by the anchor effect.
  • the chemical bonding and the mechanical bonding combine to provide a laser-transmitting resin.
  • a member and a laser absorptive resin member can be joined firmly. Therefore, even if the compatibility between the resin component having compatibility with the laser-transmitting resin member and the other resin components contained in the laser-absorbing resin member is low, sufficient bonding strength can be obtained.
  • the laser-absorbing resin member includes a first resin component that is not compatible with the laser-transmitting resin member, and a second resin component that is compatible with the laser-transmitting resin member. It is preferable that these are included.
  • the anchor effect based on the ant nest structure is used.
  • the laser-transmitting resin member and the laser-absorbing resin member can be firmly bonded. Thereby, the choice of a laser absorptive resin member becomes wide, and the combination of a wide range of resin member is attained in connection with it.
  • the abundance ratio of the second resin component in the melt-solidified portion constituting the bonded portion between the laser-transmitting resin member and the laser-absorbing resin member is the above-described ratio in the laser-absorbing resin member. It is preferably higher than the abundance ratio of the second resin component.
  • the second resin component having compatibility with the laser transmissive resin member is relatively present in the joint portion between the laser transmissive resin member and the laser absorptive resin member, the second resin component is present. A component diffusion phenomenon occurs, and the laser-transmitting resin member and the laser-absorbing resin member can be bonded more firmly.
  • the melting point of the second resin component is preferably lower than the melting point of the first resin component.
  • the second resin component having a low melting point is melted before the first resin component, and the laser-absorbing resin member.
  • the ratio of the second resin component in the bonded portion increases, so that the laser-transmitting resin member and the laser-absorbing resin member can be bonded more firmly.
  • the laser-transmitting resin member and the laser-absorbing 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.
  • 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 and generating heat by the laser-absorbing resin member 3 that has absorbed the transmitted laser beam, the surface portion in contact with the surface is melted and solidified to join the members 2 and 3 together.
  • 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 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 polyphenylene sulfide
  • PES polyethersulfone
  • PEEK polyether) Teretherketone
  • PAI polyamideimide
  • LCP liquid crystal polymer
  • PVDC polyvinylidene chloride
  • PTFE polytetrafluoroethylene
  • PCTFE polychlorotrifluoroethylene
  • PVDF polyvinylidene fluoride
  • the laser transmissive resin member 2 may be TPE (thermoplastic elastomer).
  • TPE thermoplastic elastomer
  • examples of TPE include TPO (olefin-based), TPS (styrene-based), TPEE (ester-based), and 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 laser-absorbing resin member 3 includes the first resin component 5 that is not compatible with the laser-transmitting resin member 2 and the second resin component 6 that is compatible with the laser-transmitting resin member 2. Contains.
  • the first resin component 5 and the second resin component 6 are not only included in the laser-absorbing resin member 3, but as shown in FIG.
  • the phase of the resin component 6 forms a co-continuous structure together with the three-dimensional continuous phase. That is, the laser-absorbing resin member 3 is configured as a polymer alloy having a co-continuous structure including at least one resin component compatible with the laser-transmitting resin member 2 (second resin component 6 in the present embodiment). ing.
  • the ratio of the first resin component 5 and the second resin component 6 in the bonded structure 1 is, for example, 7: 3.
  • the first resin component 5 and the second resin component 6 described above constitute the laser-transmitting resin member 2. It is preferable to use a thermoplastic resin added with a laser absorbing dye such as carbon black. Moreover, the 1st resin component 5 and the 2nd resin component 6 may add the laser absorption pigment
  • the laser-absorbing resin member 3 may include a dispersing material (not shown) so that a co-continuous structure is easily formed.
  • a dispersing agent for example, a modified polymer, a block polymer, and a graft polymer having a polar group at the molecular end or side chain are preferable.
  • examples of such dispersing materials include PP (polypropylene), PE (polyethylene), SEBS (styrene / ethylene / butylene / styrene copolymer), PS (polystyrene), AS (acrylonitrile / styrene), ABS (acrylonitrile / styrene).
  • modified products such as maleic anhydride, glycidyl methacrylate, oxazoline (epoxy-modified), and imide-modified using butadiene / styrene copolymer) as a backbone polymer. If such a dispersing material is used, even if the laser-absorbing resin member 3 is composed of two types of thermoplastic resins that are difficult to mix, these two types of thermoplastic resins have a sea-island structure (matrix domain structure). It is possible to form a polymer alloy having a co-continuous structure while suppressing the separation and separation.
  • thermoplastic resins having compatibility and thermoplastic resins having no compatibility with the thermoplastic resin constituting the laser transmissive resin member 2 exemplified above, I won't give you one example at a time, but I'll only give one specific example here.
  • the thermoplastic resin constituting the laser transmissive resin member 2 is PMMA, for example, PA (polyamide) can be used as the first resin component 5 and ABS can be used as the second resin component 6.
  • 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, and then the laser-transmitting resin member 2 is pressed. 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 is equal to or higher than the above temperature and 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 (about 30 wt%) of the second resin component 6 in the laser-absorbing resin member 3 (bulk).
  • the bonded structure 1 is configured such that the presence ratio of the second resin component 6 in the bonded portion 4 is 50% 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-absorbing resin member 3 contains the first resin component 5 that is not compatible with the laser-transmitting resin member 2, the laser-transmitting resin member 2 and the laser-absorbing resin member 3 are chemically treated. Can be firmly joined.
  • the second resin component 6 may be made higher than the second resin component 6 in the laser-absorbing resin member 3 (bulk).
  • the abundance ratio of can be easily increased.
  • the second resin component 6 oozes out at the joining interface of the laser-absorbing resin member 3, since the portion oozed out by the melted first resin component 5 is filled, a gap occurs in the laser-absorbing resin member 3. There is no.
  • the bonding structure 1 of the present embodiment has a laser-absorbing resin.
  • the anchor effect based on the structure of the member 3 also contributes to the bonding strength. That is, as shown in FIG. 1, the second resin component 6 forms a three-dimensionally continuous phase, and the first resin component 5 also forms a three-dimensionally continuous phase inside the laser-absorbing resin member 3. Are complicatedly entangled with each other, and the laser-transmitting resin member 2 and the laser-absorbing resin member 3 can be mechanically and firmly joined by the anchor effect.
  • the bonded structure 1 according to the present embodiment is based not only on the compatibility between the laser-transmitting resin member 2 and the second resin component 6 but also on the co-continuous structure of the laser-absorbing resin member 3.
  • the laser transmissive resin member 2 and the laser absorptive resin member 3 can be bonded more firmly by combining chemical bonding and mechanical bonding. Therefore, even if the compatibility between the first resin component 5 and the second resin component 6 is low, sufficient strength can be obtained, so that the options for the laser-absorbing resin member 3 are widened, and a wide range is associated therewith. Combination of resin members is possible.
  • 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, it is possible to suitably form the joined structure 1 composed of the laser-transmitting resin member 2 and the laser-absorbing resin member 3 that is a polymer alloy without changing the properties of the polymer alloy having a co-continuous structure. it can.
  • two plate-like laser-transmitting resin members 12 and 22 each having a length of 100 mm, a width of 17.5 mm, and a thickness of 1 mm made of a natural material of PMMA (polymethyl methacrylate) were prepared.
  • a plate-like laser-absorbing resin member 13 having a length of 100 mm, a width of 17.5 mm, and a thickness of 2 mm, which includes PA (polyamide) added with carbon black and ABS (acrylonitrile-butadiene-styrene copolymer), Two pieces of 23 were prepared.
  • the laser-absorbing resin member 13 includes a PA phase not compatible with PMMA and an ABS phase compatible with PMMA to form a three-dimensional continuous phase as shown in FIG. A polymer alloy having a continuous structure was used.
  • the other laser-absorbing resin member 23 as shown in FIG. 3, a polymer alloy having a sea-island structure in which PA is a sea component 25 and ABS is an island component 26 is used.
  • the laser-transmitting resin members 12 and 22 and the laser-absorbing resin members 13 and 23 are placed facing each other, pressed and brought into surface contact, and then laser-transmitting under the following laser irradiation conditions.
  • the laser beam 30 from the resin members 12 and 22 side see the hatched portion in FIG. 2
  • the surface portions in contact with the surface were melted and solidified to prepare specimens 11 and 21 in which the two were joined.
  • an experimental example using the specimen 11 manufactured using a polymer alloy having a co-continuous structure as the laser-absorbing resin member 13 is an example of the present invention, and a polymer having a sea-island structure as the laser-absorbing resin member 23
  • An experimental example using the specimen 21 manufactured using an alloy was used as a comparative example.
  • ABS island component 26
  • PA sea component 25
  • ABS which is the island component 26 surrounded by PA
  • the laser-transmitting resin member 22 and the laser-absorbing resin member 23 are not chemically bonded. It is considered that the laser-transmitting resin member 22 and the laser-absorbing resin member 23 were not bonded because there was no specific bonding.
  • the laser output is increased until the PA, which is the sea component 25, is melted, it may be possible to join even in a comparative example using a polymer alloy having a sea-island structure.
  • the laser-absorbing resin member 23 generates heat.
  • ABS which is the island component 26, and PMMA, which is the laser transmissive resin member 22, reach the thermal decomposition temperature, it becomes difficult to join.
  • the bonding structure 1 according to the present invention it was confirmed that the laser-transmitting resin member 2 and the laser-absorbing resin member 3 having a co-continuous structure can be firmly bonded.
  • a polymer alloy having a co-continuous structure is formed by using a first resin component 5 that is not compatible with the laser transmissive resin member 2, and a second resin component 6 that is compatible with the laser transmissive resin member 2.
  • the present invention is not limited to this, and both resin components having a co-continuous structure may be composed of resin components having compatibility with the laser transmissive resin member 2.
  • fusing point is lower than the thermoplastic resin which comprises the 1st resin component 5 was shown as the 2nd resin component 6
  • the abundance ratio of the 2nd resin component 6 in the junction part 4 was shown.
  • the present invention is not limited to this, and a thermoplastic resin having a melting point equal to or higher than the melting point of the thermoplastic resin constituting the first resin component 5 may be used as the second resin component 6.
  • the laser-transmitting resin member and the laser-absorbing resin member can be firmly bonded. Therefore, the laser-transmitting resin member and the laser-absorbing resin member are applied to a bonded structure composed of the laser-transmitting resin member and the laser-absorbing resin member. Very beneficial.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne une structure d'assemblage qui est composée d'un élément en résine de transmission laser et d'un élément en résine d'absorption laser. L'élément en résine d'absorption laser est un alliage polymère qui comprend un deuxième composant de résine étant compatible avec l'élément en résine de transmission laser et présente une structure co-continue.
PCT/JP2016/082521 2015-11-26 2016-11-02 Structure d'assemblage WO2017090393A1 (fr)

Applications Claiming Priority (2)

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JP2015-230459 2015-11-26
JP2015230459A JP2017094631A (ja) 2015-11-26 2015-11-26 接合構造体

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WO2017090393A1 true WO2017090393A1 (fr) 2017-06-01

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011240497A (ja) * 2010-05-14 2011-12-01 Hayakawa Rubber Co Ltd レーザー光を用いた接合方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011240497A (ja) * 2010-05-14 2011-12-01 Hayakawa Rubber Co Ltd レーザー光を用いた接合方法

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