JP2005297288A - Method for joining laser beam transmittable resin member and porous member together - Google Patents
Method for joining laser beam transmittable resin member and porous member together Download PDFInfo
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- JP2005297288A JP2005297288A JP2004114609A JP2004114609A JP2005297288A JP 2005297288 A JP2005297288 A JP 2005297288A JP 2004114609 A JP2004114609 A JP 2004114609A JP 2004114609 A JP2004114609 A JP 2004114609A JP 2005297288 A JP2005297288 A JP 2005297288A
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- porous member
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- 229920005989 resin Polymers 0.000 title claims abstract description 65
- 239000011347 resin Substances 0.000 title claims abstract description 65
- 238000005304 joining Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 21
- 229910052751 metal Inorganic materials 0.000 description 21
- 239000006262 metallic foam Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 8
- 229920003002 synthetic resin Polymers 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
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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
- B29C65/1677—Laser beams making use of an absorber or impact modifier
- B29C65/168—Laser beams making use of an absorber or impact modifier placed at the interface
-
- 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
- B29C65/44—Joining a heated non plastics element to a plastics element
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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
- 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
- B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
- B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
- B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
- B29C66/30326—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined in the form of porosity
-
- 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
- B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
- B29C66/3034—Particular design of joint configurations the joint involving an anchoring effect making use of additional elements, e.g. meshes
- B29C66/30341—Particular design of joint configurations the joint involving an anchoring effect making use of additional elements, e.g. meshes non-integral with the parts to be joined, e.g. making use of extra elements
-
- 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
- B29C66/73—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
-
- 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
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
-
- 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
- B29C66/727—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 porous, e.g. foam
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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
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7422—Aluminium or alloys of aluminium
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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
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7428—Transition metals or their alloys
- B29C66/74281—Copper or alloys of copper
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- 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
- B29K2071/00—Use of polyethers, e.g. PEEK, i.e. polyether-etherketone or PEK, i.e. polyetherketone or derivatives thereof, as moulding material
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- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/20—Inserts
- B29K2105/206—Meshes, lattices or nets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
本発明は、レーザー透過性樹脂部材と多孔質部材との接合方法に係り、特に、得られる接合体の剥離強度を向上させた接合技術に関する。 The present invention relates to a method for joining a laser transmissive resin member and a porous member, and more particularly, to a joining technique in which the peel strength of the obtained joined body is improved.
レーザー透過性樹脂部材と多孔質部材とを接合する技術には、種々の用途があり、本技術は、例えば、燃料電池の膜電極接合体やセル構造体に適用することができる。従来、このような技術は異種合成樹脂材料の接合に適用されており、異種の合成樹脂材料を重ね合わせて両者を接合するにあたり、上記重ね合わせられた合成樹脂材料のうち、一方をレーザー光に対して透過性とするとともに、他方をレーザー光に対して吸収性とし、両者の合成樹脂材料の接合面に、該両者の合成樹脂材料よりも融点の高いメタルメッシュを介在させた後、前記レーザー光に対して透過性の合成樹脂材料の方向からレーザー光を照射する、異種合成樹脂材料の接合方法が提案されている（特許文献１参照）。 The technique for joining the laser transmissive resin member and the porous member has various uses, and the present technique can be applied to, for example, a membrane electrode assembly or a cell structure of a fuel cell. Conventionally, such a technique has been applied to bonding of different types of synthetic resin materials. When two types of synthetic resin materials are overlapped and bonded to each other, one of the overlapped synthetic resin materials is used as a laser beam. The laser beam is made transparent, the other is made absorbable with respect to laser light, and a metal mesh having a melting point higher than that of the synthetic resin material is interposed on the joint surface of the two synthetic resin materials. A joining method of different kinds of synthetic resin materials has been proposed in which laser light is irradiated from the direction of a synthetic resin material that is transparent to light (see Patent Document 1).
この接合技術は、非相溶性のレーザー吸収性樹脂とレーザー透過性樹脂とを接合する際に、上記２種類の樹脂の間にこれらの樹脂よりも融点の高いメタルメッシュを介在させ、このメタルメッシュに双方の樹脂を絡ませて、メタルメッシュに各樹脂を接合し、結果的に樹脂同士をメカニカルに接合するものである。 In this joining technique, when an incompatible laser absorbing resin and a laser transmitting resin are joined, a metal mesh having a melting point higher than those resins is interposed between the two types of resins, and this metal mesh is used. Both resins are entangled with each other, and each resin is joined to the metal mesh, and as a result, the resins are mechanically joined.
上記特許文献１に記載された接合技術で使用される、多孔質部材としてのメタルメッシュの構造は、図２に示すような網目形状を呈している。このため、このメタルメッシュに樹脂を絡ませる場合には、特定の方向（同図に示す上下左右方向）のみに剥離強度が高められ、残りの方向（同図の紙面に垂直な方向）については、十分な剥離強度が得られないという問題がある。よって、近年においては、特に、多孔質部材の厚み方向の剥離強度を向上させることで、いかなる方向においても十分な剥離強度が得られ、これにより、特定の方向における剥離を十分に防止することのできる、樹脂部材と多孔質部材との接合方法の開発が要請されていた。
The structure of the metal mesh as the porous member used in the joining technique described in
本発明は、上記要請に鑑みてなされたものであり、特に、特定の方向での剥離を十分に防止し、全体として剥離強度を向上させた、レーザー透過性樹脂部材と多孔質部材との接合方法を提供することを目的としている。 The present invention has been made in view of the above requirements, and in particular, the joining of a laser transmissive resin member and a porous member, which sufficiently prevents peeling in a specific direction and improves the peeling strength as a whole. It aims to provide a method.
即ち、本発明の、レーザー透過性樹脂部材と多孔質部材との接合方法は、上記レーザー透過性樹脂部材と上記多孔質部材とを積層し、上記レーザー透過性樹脂部材側からレーザーを照射し、上記多孔質部材を発熱させて上記レーザー透過性樹脂部材を溶融し、溶融した樹脂を上記多孔質部材の空孔に含浸し、その後冷却固化することを特徴としている。 That is, the method of joining the laser transmissive resin member and the porous member of the present invention is to laminate the laser transmissive resin member and the porous member, and irradiate the laser from the laser permeable resin member side, The porous member is heated to melt the laser transmissive resin member, and the melted resin is impregnated into the pores of the porous member, and then cooled and solidified.
このような接合方法においては、複数の空孔が、上記多孔質部材の厚さ方向において連通していることが望ましい。 In such a joining method, it is desirable that a plurality of pores communicate with each other in the thickness direction of the porous member.
以上に示す本発明の接合方法によれば、溶融した樹脂が多孔質部材の空孔に浸入し、その後冷却固化されることにより、レーザー透過性樹脂部材と多孔質部材とを３次元的に強固に接合することができる。このような接合態様では、３次元的に強固な接合が達成されるため、特定の方向での剥離を十分に防止することができる。即ち、本発明によれば、剥離の方向性を皆無とすることができ、いかなる方向においても同程度の剥離強度を得ることができ、これにより、全体として接合体の剥離強度を向上させることができる。また、複数の空孔が、上記多孔質部材の厚さ方向において連通している場合には、図３に示すように、空孔１が多孔質部材２の厚さ方向に更に厚みを持って存在する。このため、溶融樹脂３が空孔１に浸入した場合には、空孔１の連通態様に従って、溶融樹脂３が更に多方向に流れ始める。従って、たとえ剥離が発生した場合であっても、その力を一層満遍なく３次元的に分散させることができる。なお、本発明においては、レーザー透過性樹脂部材と多孔質部材とを接合する際に、多孔質部材を加熱したり、両部材間に接着剤を介在することがないので、優れた生産性を実現することができる。また、本発明においては、接合に際して局部的な加熱を行わないため、各使用部材を熱を嫌う周辺部品と離間させる必要がなく、得られる接合体を含む各種機器の小型化を十分に図ることができる。
According to the joining method of the present invention described above, the melted resin enters the pores of the porous member and is then cooled and solidified, so that the laser-permeable resin member and the porous member are three-dimensionally strong. Can be joined. In such a joining mode, three-dimensionally strong joining is achieved, and therefore peeling in a specific direction can be sufficiently prevented. That is, according to the present invention, the directionality of peeling can be eliminated, and the same level of peeling strength can be obtained in any direction, thereby improving the peeling strength of the joined body as a whole. it can. In addition, when a plurality of pores communicate with each other in the thickness direction of the porous member, the
以下に、本発明の好適な実施形態を図面を参照してより詳細に説明する。
本発明のレーザー透過性樹脂部材と多孔質部材との接合方法を実施する場合には、レーザー透過性樹脂部材として、例えば、ＰＥＥＫ、ＰＰＳ、ＬＣＰ、ＰＣ、アクリル等を使用することができる。
In the following, preferred embodiments of the present invention will be described in more detail with reference to the drawings.
When implementing the joining method of the laser-permeable resin member and porous member of the present invention, for example, PEEK, PPS, LCP, PC, acrylic, etc. can be used as the laser-permeable resin member.
また、多孔質部材としては、ステンレス、Ｔｉ、Ｆｅ、Ｎｉ、Ｃｒ、Ｎｉ合金鋼、Ｃｒ合金鋼を使用することができる。また、多孔質部材としては、Ａｌ、Ｃｕ、Ｍｇ及びＺｎのうち少なくとも１種からなる合金や、Ａｇ、Ａｕ等の貴金属類のレーザー吸収発熱金属からなる発泡金属体、粉末焼結体又は細線焼結体を使用することもできる。更に、多孔質部材としては、カーボンペーパー、カーボンクロス及びカーボンフェルト（不織布）等のレーザー吸収繊維質体を使用することもできる。 Moreover, as a porous member, stainless steel, Ti, Fe, Ni, Cr, Ni alloy steel, and Cr alloy steel can be used. In addition, as the porous member, an alloy made of at least one of Al, Cu, Mg and Zn, a foam metal body made of a laser-absorbing heat-generating metal such as Ag or Au, a powder sintered body, or a fine wire-fired body. A ligation can also be used. Furthermore, as the porous member, a laser-absorbing fibrous material such as carbon paper, carbon cloth, and carbon felt (nonwoven fabric) can be used.
図４は、本発明の接合方法の実施に好適な多孔質部材の具体例を示す写真である。即ち、図４（ａ）、（ｂ）は、金属発泡体であり、図４（ｃ）は金属細線焼結体である。図４（ａ）に示す金属発泡体は、図５（ａ）に示すように、発泡ウレタンに金属粉末を塗着した後、焼結及び所定の熱処理を施して得られる。また、図４（ｂ）に示す金属発泡体は、図５（ｂ）に示すように、金属スラリーを用い、溶融金属に対して発泡、乾燥、切断、脱脂及び焼結を順次施して得られる。更に、図４（ｃ）に示す金属細線焼結体は、溶湯抽出法により得られた細線を切断した後、無作為に配置し、その後焼結を施して得られる。 FIG. 4 is a photograph showing a specific example of a porous member suitable for carrying out the joining method of the present invention. That is, FIGS. 4A and 4B are metal foams, and FIG. 4C is a metal thin wire sintered body. As shown in FIG. 5A, the metal foam shown in FIG. 4A is obtained by applying metal powder to urethane foam and then subjecting it to sintering and predetermined heat treatment. Further, the metal foam shown in FIG. 4B is obtained by sequentially foaming, drying, cutting, degreasing and sintering the molten metal using a metal slurry as shown in FIG. 5B. . Furthermore, the thin metal wire sintered body shown in FIG. 4 (c) is obtained by cutting a thin wire obtained by a molten metal extraction method, randomly arranging it, and then performing sintering.
このような製法により、例えば、図４（ｂ）に示す金属発泡体は、図５（ｂ）に示す製法中、金属スラリーの成分や、発泡、脱脂等の各工程の態様を適宜変更することにより、図６（ａ）、（ｂ）に示すように種々の形状とすることができる。ちなみに、図６（ａ）に示す金属発泡体は、金属成分を含む骨格が太く、しかも骨格が紙面に平行な方向に整然と配列されているため、特に、紙面に平行な方向での剥離強度に富む。これに対し、図６（ｂ）に示す金属発泡体は、金属成分を含む骨格が細いため、紙面に平行な方向での剥離強度は、図６（ａ）に示す金属発泡体に比して劣るが、骨格が紙面に平行な方向に偏って延在せず、無作為に配列されているため、剥離の方向性を更に低減することができ、結果として十分な剥離強度を有する。なお、図７は、図６（ｂ）に示す金属発泡体の骨格の拡大図であり、気孔が３次元的に十分に広がっていることが判る。 By such a manufacturing method, for example, the metal foam shown in FIG. 4 (b) can appropriately change the components of the metal slurry and the mode of each step such as foaming and degreasing during the manufacturing method shown in FIG. 5 (b). Thus, various shapes can be obtained as shown in FIGS. Incidentally, the metal foam shown in FIG. 6 (a) has a thick skeleton containing a metal component, and the skeleton is regularly arranged in a direction parallel to the paper surface. Rich. On the other hand, since the metal foam shown in FIG. 6B has a thin skeleton containing a metal component, the peel strength in the direction parallel to the paper surface is smaller than that of the metal foam shown in FIG. Although it is inferior, since the skeleton does not extend in a direction parallel to the paper surface and is randomly arranged, the directionality of the peeling can be further reduced, and as a result, the peeling strength is sufficient. FIG. 7 is an enlarged view of the skeleton of the metal foam shown in FIG. 6B, and it can be seen that the pores are sufficiently expanded three-dimensionally.
以上に示すレーザー透過性樹脂部材及び多孔質部材を用意し、これらを積層した後、レーザー透過性樹脂部材側からレーザーを照射することで、レーザー透過性樹脂を通過したレーザーが多孔質部材に吸収されて発熱し、その熱でレーザー透過性樹脂が多孔質部材との界面付近から溶け出す。次いで、この溶融した樹脂が多孔質部材の表面から空孔に含浸される。含浸の態様には、くさび的に溶着する場合や、多孔質部材表面に突起状の繊維が食い込む場合等があり、これらの態様により、両者の固着状態が確保される。 After preparing the laser permeable resin member and porous member shown above and laminating them, the laser passing through the laser permeable resin is absorbed by the porous member by irradiating the laser from the laser permeable resin member side. As a result, heat is generated and the laser transmissive resin melts from the vicinity of the interface with the porous member. Next, the molten resin is impregnated into the pores from the surface of the porous member. Examples of the impregnation include a case where welding is performed in a wedge manner and a case where a protruding fiber bites into the surface of the porous member.
図１は、本発明の接合方法の好適な実施態様を示す図である。同図に示すように、熱可塑性樹脂部材１１、多孔質部材１２、熱可塑性のレーザー透過性樹脂部材１３を積層し、これらの３部材を密着加圧する。次いで、レーザー発信器１４から出たレーザーを集光レンズ１５を経て、レーザー透過性樹脂部材１３側から照射する。ここで、熱可塑性樹脂部材１１は、レーザー透過性であってもレーザー吸収性であってもよい。また、多孔質部材１２とレーザー透過性樹脂部材１３とを予めレーザー溶着によって仮組みしておくことが寸法精度等を高めることができる点で望ましく、その後熱可塑性樹脂１１とこれらの部材１２，１３とを溶着することが望ましい。更に、図１に示すように、片側（同図においては上側）のみからレーザーを照射して、これらの３部材によって生じた２つの界面をほぼ同時に溶着する場合には、多孔質部材１２の厚さを０．１ｍｍ以下とすることが望ましい。なお、これらの３部材により生じた２つの界面を両側（同図においては上下両方向）から照射する場合や、２部材（例えば、多孔質部材１２及びレーザー透過性樹脂部材１３）のみを片側から照射する場合には、多孔質部材１２と樹脂材との密着性が十分に確保されていれば、多孔質部材１２の厚みを０．１ｍｍを超えるものとすることができる。
FIG. 1 is a view showing a preferred embodiment of the joining method of the present invention. As shown in the figure, a
ここで、従来の接合技術を使用した場合と、本発明の接合技術を使用した場合とについて、得られた接合体を具体的に示す。図８は、従来の接合方法により得られた接合体の断面図である。同図に示すように、従来例では、メタルメッシュ２１上にレーザー透過性樹脂部材２２を積層して同図の上方からレーザーを照射し、メタルメッシュ２１の発熱に伴う両者の界面付近の溶解により、両者を接合していた。この例では、拡大図により明らかなように、接合部分が両部材２１，２２の界面付近にしか存在せず、３次元的な接合が十分に達成されていない。
Here, the obtained joined body is specifically shown about the case where the conventional joining technique is used, and the case where the joining technique of this invention is used. FIG. 8 is a cross-sectional view of a joined body obtained by a conventional joining method. As shown in the figure, in the conventional example, a laser
これに対し、図９は、本発明の接合方法により得られた接合体の断面図である。同図に示すように、本発明例においては、多孔質部材３１上にレーザー透過性樹脂部材３２を積層して同図の上方からレーザーを照射し、多孔質部材３１の発熱により溶融した樹脂が多孔質部材３１の空孔に浸入し、その後冷却固化されることにより、両者を接合している。この例では、多孔質部材３１が溶融樹脂を３次元的に含浸可能な構造となっていることにより、接合部分が両部材３１，３２の界面付近から、厚み方向下方にまで十分に及んでおり、これにより３次元的な接合が十分に達成されている。
On the other hand, FIG. 9 is a cross-sectional view of a joined body obtained by the joining method of the present invention. As shown in the figure, in the example of the present invention, a laser
次に、本発明の他の接合例について説明する。即ち、図１０は、下方からレーザー透過性樹脂部材４１、多孔質部材４２及びレーザー透過性樹脂部材４３を積層し、これらの３部材に対し、同図の上下２方向からレーザーを照射し、各樹脂を溶融した後、多孔質部材４２の両側から溶融樹脂を含浸させ、３部材を３次元的に強固に接合した例である。
Next, another joining example of the present invention will be described. That is, in FIG. 10, a laser
また、図１１は、下方からレーザー吸収性樹脂部材５１、多孔質部材５２及びレーザー透過性樹脂部材５３を積層してこれらの３部材に対し、同図の上方からレーザーを照射し、各樹脂を溶融した後、多孔質部材５２の両側から溶融樹脂を含浸させ、３部材を３次元的に強固に接合した例である。
In FIG. 11, a laser-absorbing
以下に、本発明の実施例を示し、本発明の効果を実証する。
図９に示す接合態様に関し、多孔質部材３１として図４（ｂ）に示す金属発泡体を使用するとともに、レーザー透過性樹脂部材３２としてＰＥＥＫを使用し、図９の上方からレーザーを照射してこれらを接合した。図１２（ａ）はこのようにして得られた接合体の横断面図であり、図１２（ｂ）はこの接合体の縦断面図である。図１２（ａ）から明らかなように、金属発泡体により形成された孔径２０〜５０μｍの気孔の中には樹脂が十分に含浸されている。また、図１２（ｂ）から明らかなように、接合体には残留気孔（図の白い部分）が存在するものの、樹脂が多孔質部材の厚さ方向に十分に含浸されている。以上により、図１２に示す接合体の剥離強度は、３次元的に十分に確保されているといえる。
Examples of the present invention will be shown below to demonstrate the effects of the present invention.
9, the metal foam shown in FIG. 4 (b) is used as the
以上説明したように、本発明によれば、特に、特定の方向での剥離を十分に防止することのできる、樹脂部材と多孔質部材との接合方法を提供することができる。よって、本発明のレーザー透過性樹脂部材と多孔質部材との接合方法は、近年益々その剥離強度の向上が要請される、燃料電池の拡散層等の技術分野において、有用である。 As described above, according to the present invention, it is possible to provide a method for joining a resin member and a porous member, which can sufficiently prevent peeling particularly in a specific direction. Therefore, the method for joining the laser transmissive resin member and the porous member of the present invention is useful in technical fields such as a diffusion layer of a fuel cell, for which an improvement in peel strength is increasingly required in recent years.
１１…熱可塑性樹脂部材
１２…多孔質部材
１３…レーザー透過性樹脂部材
１４…レーザー発信器
１５…集光レンズ
DESCRIPTION OF
Claims (2)
前記レーザー透過性樹脂部材と前記多孔質部材とを積層し、前記レーザー透過性樹脂部材側からレーザーを照射し、前記多孔質部材を発熱させて前記レーザー透過性樹脂部材を溶融し、溶融した樹脂を前記多孔質部材の空孔に含浸し、その後冷却固化することを特徴とするレーザー透過性樹脂部材と多孔質部材との接合方法。 In joining the thermoplastic laser-transmissive resin member and the porous member,
The laser transmissive resin member and the porous member are laminated, the laser radiated resin member is irradiated with a laser, the porous member is heated to melt the laser permeable resin member, and the molten resin Is impregnated into the pores of the porous member, and then cooled and solidified, and the joining method of the laser transmissive resin member and the porous member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004114609A JP2005297288A (en) | 2004-04-08 | 2004-04-08 | Method for joining laser beam transmittable resin member and porous member together |
| US11/083,666 US7727658B2 (en) | 2004-03-17 | 2005-03-17 | Method for joining laser transmitting resin member and porous member, method for joining thermoplastic resin, and fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004114609A JP2005297288A (en) | 2004-04-08 | 2004-04-08 | Method for joining laser beam transmittable resin member and porous member together |
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| JP2005297288A true JP2005297288A (en) | 2005-10-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007181779A (en) * | 2006-01-06 | 2007-07-19 | Hitachi Plant Technologies Ltd | Manufacturing method of flat membrane element |
| JP2008135295A (en) * | 2006-11-28 | 2008-06-12 | Japan Gore Tex Inc | Gas diffusion layer element for solid polymer fuel cell, solid polymer fuel cell, and its manufacturing method |
| JP2010274279A (en) * | 2009-05-27 | 2010-12-09 | Nagoya Industrial Science Research Inst | Method for joining member using laser |
| JP2013122929A (en) * | 2013-02-06 | 2013-06-20 | Nihon Gore Kk | Gas diffusion layer element for solid polymer fuel cell, solid polymer fuel cell, and manufacturing method of the same |
| EP2871040A4 (en) * | 2012-07-05 | 2015-11-04 | Asahi Kasei Chemicals Corp | Welding method and weld |
-
2004
- 2004-04-08 JP JP2004114609A patent/JP2005297288A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007181779A (en) * | 2006-01-06 | 2007-07-19 | Hitachi Plant Technologies Ltd | Manufacturing method of flat membrane element |
| US8097160B2 (en) | 2006-01-06 | 2012-01-17 | Hitachi Plant Technologies, Ltd. | Flat membrane element and manufacturing method thereof |
| JP2008135295A (en) * | 2006-11-28 | 2008-06-12 | Japan Gore Tex Inc | Gas diffusion layer element for solid polymer fuel cell, solid polymer fuel cell, and its manufacturing method |
| JP2010274279A (en) * | 2009-05-27 | 2010-12-09 | Nagoya Industrial Science Research Inst | Method for joining member using laser |
| EP2871040A4 (en) * | 2012-07-05 | 2015-11-04 | Asahi Kasei Chemicals Corp | Welding method and weld |
| JP2013122929A (en) * | 2013-02-06 | 2013-06-20 | Nihon Gore Kk | Gas diffusion layer element for solid polymer fuel cell, solid polymer fuel cell, and manufacturing method of the same |
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