WO2008152934A9 - 金属一体導電ゴム部品 - Google Patents
金属一体導電ゴム部品 Download PDFInfo
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- WO2008152934A9 WO2008152934A9 PCT/JP2008/060128 JP2008060128W WO2008152934A9 WO 2008152934 A9 WO2008152934 A9 WO 2008152934A9 JP 2008060128 W JP2008060128 W JP 2008060128W WO 2008152934 A9 WO2008152934 A9 WO 2008152934A9
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- conductive
- conductive rubber
- metal
- rubber
- integrated
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0015—Gaskets or seals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24174—Structurally defined web or sheet [e.g., overall dimension, etc.] including sheet or component perpendicular to plane of web or sheet
Definitions
- the present invention relates to a conductive rubber component, and more particularly to a metal-integrated conductive rubber for electrically connecting a housing and a printed wiring board, and a metal integrated with a metal plate integrated on one side of the conductive rubber. It relates to conductive rubber.
- Electromagnetic interferences such as malfunction of electronic devices due to electromagnetic waves radiated from mobile phones and effects on human bodies have become problems.
- a conductive metal vapor deposition film layer is provided on the inner side of the resin body of the cellular phone as a shield countermeasure.
- the effect of the conductive layer is a conductive shield layer for shielding radiated electromagnetic noise.
- the conductive shield layer is often formed by metal vapor deposition or conductive paint coating, but in order to make the conductive shield layer inside the printed circuit board and the resin body electrically conductive, it is traditionally spring-like.
- a method is adopted in which the contact is fixed and attached to an electrode on a printed wiring board, and the body is assembled and brought into contact with each other for electrical connection (Patent Document 1).
- a method is adopted in which a metal foil is integrated on one surface of a conductive rubber and fixed to a printed circuit board with a conductive adhesive or other means to establish an electrical connection.
- conductive rubber is often made by mixing a large amount of conductive fillers with insulating rubber, and these conductive rubbers often mix a large amount of metal fillers, so the entire volume of rubber The part becomes harder and loses its elasticity and resilience, and the properties such as compression set are greatly sacrificed, and the conductive rubber parts are crushed by long-term compression. Has a problem that electrical connection cannot be maintained. Furthermore, there is a problem that the cost is high because a large amount of expensive metal filler is mixed. JP 2004-134241 A
- the present invention solves the problems of conventional conductive rubber parts, has a high compression set, can provide a stable electrical connection over a long period of time, can be bonded onto a printed wiring board, and is cost effective. Provide a metal-integrated conductive rubber part that is low in production efficiency.
- conductive rubber layers and insulating rubber layers are laminated alternately and in parallel, and a boundary portion between the conductive rubber layer and the insulating rubber layer is the conductive rubber layer.
- the conductive rubber layer has a volume resistivity of 10 ⁇ 5 ⁇ ⁇ cm to 10 K ⁇ ⁇ cm
- the insulating rubber layer has a volume resistivity of 1 M ⁇ ⁇ a following stack cm to 10 16 Omega ⁇ cm, on at least one surface of a plane perpendicular to the conductive direction of the laminate, the integrated metal plate via the conductive adhesive layer made of conductive rubber It is characterized by.
- FIG. 1 is a perspective view of a metal-integral conductive rubber component in one embodiment of the present invention.
- FIG. 2 is a sectional view of the same.
- Conductive rubber layer 2 Insulating rubber layer 3: Conductive adhesive layer (rubber layer) 4: Metal plate 10: Metal-integrated conductive rubber part
- the metal integrated conductive rubber part of the present invention has a high compression set, can obtain a stable electrical connection over a long period of time, and can be bonded to a printed wiring board. It can be. Also, the production cost is low and the production efficiency is good.
- This metal-integrated conductive rubber component is suitable as a means for electrically connecting, for example, a printed wiring board and a resin body back side of a mobile phone.
- the first part is a laminate in which conductive rubber layers and insulating rubber layers are laminated and cured so that they are alternately parallel.
- the second part is a conductive adhesive layer part that integrates the laminate with the metal plate.
- the third part consists of a metal plate.
- the first part is a laminate in which conductive rubber layers and insulating rubber layers are alternately laminated in parallel, and the boundary part between both layers is a laminated rubber layer that is cured and integrated by a crosslinking reaction. Is the body.
- the volume specific resistance of the conductive rubber layer is 10 ⁇ 5 ⁇ ⁇ cm or more and 10 K ⁇ ⁇ cm or less.
- the other insulating rubber layer has a volume resistivity of 10 M ⁇ ⁇ cm to 10 16 ⁇ ⁇ cm.
- the thickness of the conductive rubber layer is preferably in the range of 0.01 mm to 1 mm.
- the thickness of the insulating rubber layer is preferably in the range of 0.01 mm to 1 mm. More preferably, the conductive rubber layer has a thickness in the range of 0.01 mm to 0.2 mm and a volume resistivity of 1 K ⁇ ⁇ cm or less, and the other insulating rubber layer has a thickness of 0.01 mm to 0 mm. Insulating properties with a volume resistivity of 100 M ⁇ ⁇ cm or more in the range of 2 mm.
- At least one surface perpendicular to the conductive direction of the rubber laminate is integrated with the metal plate through a conductive adhesive layer having a volume resistivity of 10 ⁇ 5 ⁇ ⁇ cm to 10 K ⁇ ⁇ cm.
- the thickness of the adhesive layer is preferably 0.05 mm or more and 1 mm or less.
- the periphery is preferably cut by cutting.
- the conductive rubber material is a butadiene polymer (BR: classified according to ASTM D1419. The following abbreviations are the same), a butadiene-styrene copolymer (SBR), a butadiene-acrylonitrile copolymer (NBR), an isoprene polymer ( IR), chloroprene polymer (CR), isobutylene-diene copolymer (IIR), ethylene-propylene copolymer (EPM), ethylene-propylene terpolymer (EPDM), chlorosulfonated polyethylene (CSM), alkylene -It is selected from organic synthetic rubbers such as sulfide polymer (T), alkyl-siloxane condensate (Si), vinylidene fluoride and hexafluoropropylene copolymer (FPM).
- BR butadiene polymer
- SBR butadiene-styrene copolymer
- alkyl-siloxane condensate which is commercially available as a silicone rubber compound or liquid silicone, and may be anything that becomes a rubber elastic body when cured. It is particularly preferable to mix conductive powder and easily impart conductivity.
- Silicone rubber has the chemical formula R n SiO (4-n) / 2 (wherein R is the same or different unsubstituted or substituted monovalent hydrocarbon group (1 carbon number), and n is 1.98 to It is a positive number of 2.02, the same shall apply hereinafter), and is an organopolysiloxane having at least two aliphatic unsaturated groups.
- the conductive filler to be mixed in order to impart conductivity to the silicone rubber is carbon, copper, copper alloy, iron, stainless steel, nickel, tin, titanium, gold, silver or the like processed into particles, or an alloy thereof
- the conductive filler which formed the metal conductive layer on the surface of the core material by plating, vapor deposition, etc. is preferable.
- a preferred curing agent is 2,5-dimethyl-2.5-di (tertiarybutylperoxy) hexane, which is preferably subjected to radical reaction curing.
- Insulating rubber materials are butadiene polymer (BR: ASTM, classification according to D1419), butadiene / styrene copolymer (SBR), butadiene / acrylonitrile copolymer (NBR), isoprene polymer (IR), chloroprene polymer.
- BR butadiene polymer
- SBR butadiene / styrene copolymer
- NBR butadiene / acrylonitrile copolymer
- IR isoprene polymer
- chloroprene polymer chloroprene polymer
- alkylene-sulfide polymer selected from organic synthetic rubbers such as alkyl-siloxane condensate (Si), vinylidene fluoride, and hexafluoropropylene copolymer (FPM), and any rubber elastic body can be obtained by curing.
- alkyl siloxane condensates which are commercially available as silicone rubber compounds and liquid silicones.
- Silicone rubber has the chemical formula R n SiO (4-n) / 2 (wherein R is the same or different unsubstituted or substituted monovalent hydrocarbon group (1 carbon number), and n is 1.98 to And an organopolysiloxane having at least two aliphatic unsaturated groups.
- the curing agent for the insulating rubber may be any curing mechanism of addition reaction curing using an organic peroxide or organohydrogenpolysiloxane and a platinum catalyst. As a result, it can be thermally cured and has an electrically stable volume. Select one that provides specific resistance. Particularly preferably, the curing agent is 2,5-dimethyl-2.5-di (tertiarybutylperoxy) hexane, and radical reaction type curing is preferred.
- the conductive rubber layer and the insulating rubber layer described above are alternately laminated in parallel, and the boundary portion between both layers is a rubber laminate that is cured and integrated by a crosslinking reaction.
- the conductive adhesive layer made of conductive rubber for integrating the laminate and the metal foil is R n SiO (4-n) / 2 (where R is the same or different non-substituted or substituted 1).
- a conductive filler having a metal thin film layer formed on the surface by plating, vapor deposition or the like is preferable.
- the volume resistivity of the conductive rubber obtained by mixing the silicone rubber with a conductive filler is preferably 0.2 ⁇ ⁇ cm or less.
- the conductive rubber curing agent may be either an organic peroxide or an addition reaction curing using an organohydrogenpolysiloxane and a platinum catalyst, but it should be selected to provide a stable and electrically low volume resistivity. It is preferable to use 2,5-dimethyl-2,5-di (tertiarybutylperoxy) hexane and perform radical reaction type curing.
- the preferred thickness of the conductive adhesive layer made of conductive rubber is in the range of 0.1 to 0.3 mm.
- the metal plate is preferably a metal plate having a thickness of 0.05 mm to 0.1 mm and expanded from copper, copper alloy, iron, stainless steel, nickel, tin, titanium, gold, silver, or an alloy thereof. Also referred to herein as a metal foil. Metal plate and metal foil have the same meaning.
- silane coupling agent as an adhesion aid in order to integrally mold the conductive rubber on the surface of the metal plate and to firmly integrate each other.
- the silane coupling agent applied to the surface of the metal plate is hydrolyzed, and a dehydration condensation reaction occurs between the silanol group and M-OH (M is silicon or metal atom) on the surface of the metal plate. Work to combine.
- M-OH silicon or metal atom
- X is a methyl group or ethyl group
- Y is an aliphatic long-chain alkyl group having 2 or more carbon atoms, and is typically marketed as a silane coupling agent, such as vinyltriethoxysilane, vinyltris (2-methoxyethoxy).
- Silane 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, N-2- (aminoethyl) 3-aminopropyltrimethoxysilane, N-phenyl-3-aminopropyltrimethoxysilane, 3 -Mercaptopropyltrimethoxysilane, 3-chloropropyltrimethoxysilane, etc.
- a material suitable for the material of the metal plate is appropriately selected from these, and one type or a mixture of two or more types can be used.
- the surface of the metal plate may be roughened by etching or blasting or the surface may be further coated with a silane coupling agent. Not.
- the compression set of the metal-integral conductive rubber part of the present invention is preferably in the range of 5 to 40%.
- a more preferable compression set is in the range of 20 to 40%.
- FIG. 1 is a perspective view of a metal-integral conductive rubber component 10 according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view thereof.
- the conductive rubber layers 1 and the insulating rubber layers 2 are laminated so as to be alternately parallel.
- the boundary portion between the conductive rubber layer 1 and the insulating rubber layer 2 is integrated by a crosslinking reaction.
- both rubbers are laminated in an unvulcanized state and then vulcanized, whereby the boundary portion between both layers is integrated by a crosslinking reaction.
- a metal plate 4 is integrated with at least one surface perpendicular to the conductive direction of the conductive rubber layer 1 via a conductive adhesive layer (rubber layer) 3 made of conductive rubber.
- the conductive rubber layer 1, the conductive adhesive layer (rubber layer) 3, and the metal plate 4 are electrically connected to each other for mounting on a common electrode.
- the conductive rubber layer 1, the conductive adhesive layer (rubber layer) 3 and the metal plate 4 are electrically connected and are isotropic conductive.
- Example 1 As shown in FIGS. 1 and 2, the conductive rubber material of the laminate in which the conductive rubber layers and the insulating rubber layers are alternately stacked in parallel is silicone rubber KE530U (product name, Shin-Etsu Chemical Co., Ltd.). 100 parts by weight of silver coated glass powder S3000 (product name, manufactured by Toshiba Ballotini Co., Ltd.) and 210 parts by weight of 100 parts by weight of the average particle size were mixed with 2,5-dimethyl-2,5-di (t-butyl).
- silicone rubber KE530U product name, Shin-Etsu Chemical Co., Ltd.
- 100 parts by weight of silver coated glass powder S3000 product name, manufactured by Toshiba Ballotini Co., Ltd.
- 210 parts by weight of 100 parts by weight of the average particle size were mixed with 2,5-dimethyl-2,5-di (t-butyl).
- the insulating rubber material is 100 parts by weight of silicone rubber SH861U (product name, manufactured by Toray Dow Corning Co., Ltd.) and an additive containing 50% of 2,5-dimethyl-2.5-di (t-butylperoxy) hexane. 1 part by weight of a sulfurizing agent RC-4 (product name, manufactured by Toray Dow Corning Co., Ltd.) was homogeneously kneaded and rolled between rolls to prepare a sheet having a thickness of 5 mm.
- silicone rubber SH861U product name, manufactured by Toray Dow Corning Co., Ltd.
- an additive containing 50% of 2,5-dimethyl-2.5-di (t-butylperoxy) hexane 1 part by weight of a sulfurizing agent RC-4 (product name, manufactured by Toray Dow Corning Co., Ltd.) was homogeneously kneaded and rolled between rolls to prepare a sheet having a thickness of 5 mm.
- rolled sheets were each rolled to 5 mm with a laminating roll so that conductive rubber and insulating rubber alternate. Further, the rolled sheets are divided into two equal parts and stacked so as to have a thickness of 10 mm. Further, the same rolling is repeated, and finally the dimension of the conductive layer is 0.04 mm (volume resistivity is 10 ⁇ 1 ⁇ ⁇ The dimension of the insulating layer was repeated several times up to 0.04 mm (volume resistivity of 100 M ⁇ ⁇ cm or more). 2 layers were 4 layers, 4 layers were 8 layers, 8 layers were 16 layers, 16 layers were 32 layers, and so on.
- a plurality of layers of conductive rubber and insulating rubber thus prepared are stacked, inserted into a mold, stacked, and heated and vulcanized at 150 ° C. for 4 hours while compressing 3% in the height direction.
- a cured laminate was obtained.
- the laminated block thus prepared was sliced into 2.5 mm perpendicular to the lamination direction to obtain a laminated body. Furthermore, the laminated body sliced and cut into 2.5 mm was put into a hot air circulation oven, and a laminated body was prepared through a secondary vulcanization process at 150 ° C. for 1 hour.
- the conductive adhesive which consists of conductive rubber which integrates a laminated body and a metal plate was prepared.
- This conductive adhesive is composed of 100 parts by weight of silicone rubber KE530U (product name, manufactured by Shin-Etsu Chemical Co., Ltd.), 210 parts by weight of silver-coated glass powder S3000 (product name, manufactured by Barotini Co., Ltd.) having an average particle size of 22 ⁇ m, and 2 parts by weight of a vulcanizing agent containing 50% by weight of 2.5 dimethyl-2.5 bis (t-butylperoxy) hexane and kneaded to create a conductive rubber compound with a thickness of 0.3 mm between the two rolls did.
- the volume resistivity of this product was 10 ⁇ 1 ⁇ ⁇ cm or less.
- a metal plate was prepared. Apply a silane coupling agent, 3-methacryloxypropyltrimethoxysilane as a 10% by weight solution in isopropanol to a 0.05mm phosphor bronze rolled foil, and dry it at room temperature (25 ° C) to treat the surface of the metal plate. did.
- the laminate of the conductive rubber and insulating rubber and the metal plate are bonded to the surface of one side of the phosphor bronze rolled foil by applying the conductive rubber (conductive adhesive) prepared above to a thickness of about 0.2 mm with a rolling roller. In this way, bonding was performed while removing air from the bonding portion. Next, it was put into a molding die, subjected to primary vulcanization at 170 ° C. for 10 minutes under a pressure of 20 kg / cm 2, and then subjected to secondary vulcanization at 160 ° C. for 8 hours to obtain a total thickness of 2.7 mm. A metal plate integrated conductive sheet was prepared.
- the metal integrated conductive sheet is fixed to the panel for cutting with a double-sided tape with the metal foil side down, and cut to a width of 3 mm, a length of 3 mm, and a thickness of 2.7 mm with a cutting blade to obtain a metal integrated conductive rubber. It was.
- the resistance value at a measurement current of 100 mA was 50 m ⁇ .
- compression set was measured according to the standard of JIS K 6262 (25% compression, kept at 85 ° C. for 24 hours), the compression set value was 40%.
- Comparative Example 1 Primer treatment was performed on one side of a rolled copper foil having a thickness of 0.1 mm. To 100 parts by weight of silicone rubber KE530U (product name, manufactured by Shin-Etsu Chemical Co., Ltd.), 210 parts by weight of silver powder having an average particle size of 22 ⁇ m and 2 parts by weight of 2.5 dimethyl 2.5 dihexane as a vulcanizing agent were added. This was overlapped with the primer-treated surface of the rolled copper foil and rolled to a total thickness of 2.8 mm between two rolled rolls. After that, the rolled sheet is put in a mold in which a molding space is formed by a pair of molds, subjected to heat vulcanization at 170 ° C. for 10 minutes, vulcanization of conductive silicone rubber and metal foil and conductivity. Silicone rubber was joined to obtain a metal foil integrated conductive sheet having a thickness of 2.7 mm. The compression set value of the conductive rubber of Comparative Example 1 was 83%.
- Example 2 The conductive rubber material of the laminate in which the conductive rubber layers and the insulating rubber layers are alternately stacked in parallel is 100 parts by weight of silicone rubber SE6770U (product name, manufactured by Toray Dow Corning Co., Ltd.). ⁇ 2 parts by weight of 5-dimethyl-2,5-di (t-butylperoxy) hexane, 50% vulcanizing agent RC-4 (product name, manufactured by Toray Dow Corning Co., Ltd.) is homogeneously kneaded. And it rolled with the roll and created the sheet
- silicone rubber SE6770U product name, manufactured by Toray Dow Corning Co., Ltd.
- the insulating rubber material contains 100 parts by weight of silicone rubber SH861U (product name, manufactured by Toray Dow Corning Co., Ltd.) and 50% of 2,5-dimethyl-2.5-di (t-butylperoxy) hexane. 1 part by weight of vulcanizing agent RC-4 (product name, manufactured by Toray Dow Corning Co., Ltd.) was homogeneously kneaded and rolled between rolls to prepare a sheet having a thickness of 5 mm.
- silicone rubber SH861U product name, manufactured by Toray Dow Corning Co., Ltd.
- vulcanizing agent RC-4 product name, manufactured by Toray Dow Corning Co., Ltd.
- rolled sheets were each rolled to 5 mm with a laminating roll so that conductive rubber and insulating rubber alternate. Further, the rolled sheet is divided into two equal parts and stacked so as to have a thickness of 10 mm. Further, the same rolling is repeated, and finally the dimension of the conductive layer is 0.3 mm (volume resistivity is 9 ⁇ ⁇ cm or less). The dimensions of the insulating layer were repeated several times up to 0.3 mm (volume resistivity of 100 M ⁇ ⁇ cm or more). 2 layers were 4 layers, 4 layers were 8 layers, 8 layers were 16 layers, and 16 layers were 32 layers.
- a plurality of layers of conductive rubber and insulating rubber thus prepared are stacked, inserted into a mold, stacked, and heated and vulcanized at 150 ° C. for 4 hours while compressing 3% in the height direction.
- a cured laminate was obtained.
- the laminated block thus prepared was sliced and cut into 3.0 mm perpendicular to the lamination direction to obtain a laminated body. Furthermore, the laminated body sliced and cut to 3.0 mm was put into a hot air circulation oven, and a laminated body was prepared through a secondary vulcanization process at 150 ° C. for 1 hour.
- a conductive adhesive made of conductive rubber for integrating the laminate and the metal plate was prepared.
- This conductive adhesive contains 50% of 2,5-dimethyl-2,5-di (t-butylperoxy) hexane in 100 parts by weight of silicone rubber SE6770U (product name, manufactured by Toray Dow Corning Co., Ltd.) 2 parts by weight of vulcanizing agent RC-4 (product name, manufactured by Toray Dow Corning Co., Ltd.) was uniformly kneaded to prepare a conductive rubber compound having a thickness of 0.5 mm between two rolls. The volume resistivity of this product was 9 ⁇ ⁇ cm or less.
- a metal plate was prepared.
- a 1 mm phosphor bronze rolled foil is coated with a silane coupling agent, 3-methacryloxypropyltrimethoxysilane as a 10 wt% solution in isopropanol, and dried at room temperature (25 ° C.) for 1 hour to treat the surface of the metal plate. did.
- the laminate of the conductive rubber and insulating rubber and the metal plate are bonded to the surface of one side of the phosphor bronze rolled foil by applying the conductive rubber (conductive adhesive) prepared above to a thickness of about 0.4 mm with a rolling roller. In this way, bonding was performed while removing air from the bonding portion. Next, it is put into a molding die, subjected to primary vulcanization at 170 ° C. for 10 minutes under a pressure of 20 kg / cm 2, and then subjected to secondary vulcanization at 160 ° C. for 8 hours to obtain a total thickness of 4.3 mm. A metal plate integrated conductive sheet was prepared.
- the metal integrated conductive sheet is fixed to the panel for cutting with a double-sided tape with the metal foil side down, and cut to a width of 5 mm, a length of 5 mm, and a thickness of 4.3 mm with a cutting blade to obtain a metal integrated conductive rubber. It was.
- the resistance value at a measurement current of 1 mA was 5 ⁇ .
- the compression set was measured according to the standard of JIS K 6262 (25% compression, kept at 85 ° C. for 24 hours), the compression set value was 20%.
- the rolled sheet is put in a mold in which a molding space is formed by a pair of molds, subjected to heat vulcanization at 170 ° C. for 10 minutes, vulcanization of conductive silicone rubber and metal foil and conductivity. Silicone rubber was joined to obtain a metal foil integrated conductive sheet having a thickness of 4.3 mm.
- the compression set of the conductive rubber of Comparative Example 2 was 45%.
- the structure shown in FIGS. 1 and 2 has a high compression set because it is a structure in which an electrically conductive rubber layer is sandwiched between electrically insulating rubber layers having a relatively good compression set. Further, by sandwiching the conductive rubber layer between the electrically insulating rubber layers, the compression set is hardly deteriorated, and the repulsion at the time of compression bonding is continuously maintained. As a result, the rebound resilience of the product is maintained for a long period of time, so that the increase in contact resistance with time is small, and a stable electrical connection can be obtained.
- the metal-integrated conductive rubber part of the present invention is used inside a mobile phone or the like.
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- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
図1~2に示すように、導電性ゴム層と絶縁性ゴム層とが交互に平行となるように積層された積層体の導電性ゴム材料は、シリコーンゴムKE530U(製品名、信越化学工業株式会社製)100重量部に平均粒径22μmの銀コートガラス粉S3000(製品名、東芝バロティニ株式会社製)、210重量部を混合し、2・5-ジメチル-2・5-ジ(t-ブチルパーオキシ)ヘキサン、50%含有の加硫剤RC-4(製品名、東レ・ダウコーニング株式会社製)2重量部を均質に混錬りし、ロールで圧延して厚さ5mmのシートを作成した。
厚さ0.1mmの圧延銅箔の片面にプライマー処理を行った。シリコーンゴムKE530U(製品名、信越化学工業株式会社製)100重量部に平均粒径22μmの銀粉を210重量部と加硫剤として2・5ジメチル2・5ジヘキサンを2重量部投入した。これを前記圧延銅箔のプライマー処理面を重ねあわせ、圧延2本ロール間で2.8mmの総厚に圧延した。その後に、一対の型によって成形空間が形成される金型内に前記の圧延シートを入れて、170℃、10分の加熱加硫を施し、導電性シリコーンゴムの加硫及び金属箔と導電性シリコーンゴムの接合がなされ、厚み2.7mmの金属箔一体型導電シートを得た。この比較例1の導電ゴムの圧縮永久歪値は83%であった。
導電性ゴム層と絶縁性ゴム層とが交互に平行となるように積層された積層体の導電性ゴム材料は、シリコーンゴムSE6770U(製品名、東レダウコーニング株式会社製)100重量部に、2・5-ジメチル-2・5-ジ(t-ブチルパーオキシ)ヘキサン、50%含有の加硫剤RC-4(製品名、東レ・ダウコーニング株式会社製)2重量部を均質に混錬りし、ロールで圧延して厚さ5mmのシートを作成した。
厚さ1mmの圧延銅箔の片面にプライマー処理を行った。シリコーンゴムSE6770U(製品名、東レ・ダウコーニング株式会社製)100重量部に、2・5-ジメチル-2・5-ジ(t-ブチルパーオキシ)ヘキサン、50%含有の加硫剤RC-4(製品名、東レ・ダウコーニング株式会社製)2重量部を均質に混錬りした。これを前記圧延銅箔のプライマー処理面を重ねあわせ、圧延2本ロール間で4.4mmの総厚に圧延した。その後に、一対の型によって成形空間が形成される金型内に前記の圧延シートを入れて、170℃、10分の加熱加硫を施し、導電性シリコーンゴムの加硫及び金属箔と導電性シリコーンゴムの接合がなされ、厚み4.3mmの金属箔一体型導電シートを得た。この比較例2の導電ゴムの圧縮永久歪値は45%であった。
[産業上の利用分野]
本発明の金属一体導電ゴム部品は、携帯電話機内部などに使用され、特にプリント配線板とケースの電気的な接続や、プリント配線板と導電性金属蒸着膜が施されているフレーム内面との電気的な接続に好適である。
Claims (13)
- 導電性ゴム層と絶縁性ゴム層とが交互にかつ平行に積層され、
前記導電性ゴム層と前記絶縁性ゴム層の境界部分は、前記導電性ゴム層と前記絶縁性ゴム層との架橋により一体化されており、
前記導電性ゴム層の体積固有抵抗は10-5Ω・cm以上10KΩ・cm以下、
前記絶縁性ゴム層の体積固有抵抗は1MΩ・cm以上1016Ω・cm以下の積層体であり、
前記積層体の導電性方向とは直角な面の少なくとも一面に、導電性ゴムからなる導電性接着層を介して金属板を一体化した金属一体導電ゴム部品。 - 前記金属板の表面にはシランカップリング剤が塗布されている請求項1に記載の金属一体導電ゴム部品。
- 前記導電性ゴムからなる導電性接着層と金属板との一体化が、導電性ゴムを未架橋状態で金属板と貼り合わせ、架橋による一体化である請求項1に記載の金属一体導電ゴム部品。
- 前記導電性ゴム層の厚さは、0.01mm~1mmの範囲である請求項1に記載の金属一体導電ゴム部品。
- 前記絶縁性ゴム層の厚さは、0.01mm~1mmの範囲ある請求項1に記載の金属一体導電ゴム部品。
- 前記導電性ゴム層は、ブタジエン重合物:BR、ブタジエン・スチレン共重合物:SBR、ブタジエン・アクリロニトリル共重合物:NBR、イソプレン重合物:IR、クロロプレン重合物:CR、イソブチレン・ジエン共重合物:IIR、エチレン・プロピレン共重合物:EPM、エチレン・プロピレン三元重合物:EPDM、クロロスルフォン化ポリエチレン:CSM、アルキレン・スルフォイド重合物:T、アルキル・シロキサン縮合物:Si、フッ化ビニリデン、及び六フッ化プロピレン共重合物:FPMから選ばれる少なくとも一つの有機合成ゴムである請求項1に記載の金属一体導電ゴム部品。
- 前記絶縁性ゴム層は、ブタジエン重合物:BR、ブタジエン・スチレン共重合物:SBR、ブタジエン・アクリロニトリル共重合物:NBR、イソプレン重合物:IR、クロロプレン重合物:CR、イソブチレン・ジエン共重合物:IIR、エチレン・プロピレン共重合物:EPM、エチレン・プロピレン三元重合物:EPDM、クロロスルフォン化ポリエチレン:CSM、アルキレン・スルフォイド重合物:T、アルキル・シロキサン縮合物:Si、フッ化ビニリデン、及び六フッ化プロピレン共重合物:FPMから選ばれる少なくとも一つの有機合成ゴムである請求項1に記載の金属一体導電ゴム部品。
- 前記導電性ゴム層及び前記絶縁性ゴム層が、ともにシリコーンゴムである請求項1に記載の金属一体導電ゴム部品。
- 前記金属板は、厚さが0.001mm~2mmである請求項1に記載の金属一体導電ゴム部品。
- 前記導電性ゴム層と導電性接着層と金属板は導通しており、等方向導電性である請求項1に記載の金属一体導電ゴム部品。
- 前記導電性接着層の体積固有抵抗は10-5Ω・cm以上10KΩ・cm以下である請求項1に記載の金属一体導電ゴム部品。
- 前記導電性接着層の厚さは、0.05mm以上1mm以下である請求項1に記載の金属一体導電ゴム部品。
- 金属一体導電ゴム部品の圧縮永久歪性は、5~40%の範囲である請求項1に記載の金属一体導電ゴム部品。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08777079A EP2073619B1 (en) | 2007-06-11 | 2008-06-02 | Metal-integral conductive rubber component |
AT08777079T ATE521220T1 (de) | 2007-06-11 | 2008-06-02 | Leitfähige integral-metall-gummi-komponente |
CN2008800010970A CN101558696B (zh) | 2007-06-11 | 2008-06-02 | 金属一体化导电橡胶 |
US12/310,512 US7976927B2 (en) | 2007-06-11 | 2008-06-02 | Metal-integral conductive rubber component |
JP2008542121A JP4231899B2 (ja) | 2007-06-11 | 2008-06-02 | 金属一体導電ゴム部品 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007-154388 | 2007-06-11 | ||
JP2007154388 | 2007-06-11 |
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WO2008152934A1 WO2008152934A1 (ja) | 2008-12-18 |
WO2008152934A9 true WO2008152934A9 (ja) | 2009-11-26 |
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PCT/JP2008/060128 WO2008152934A1 (ja) | 2007-06-11 | 2008-06-02 | 金属一体導電ゴム部品 |
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Country | Link |
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US (1) | US7976927B2 (ja) |
EP (1) | EP2073619B1 (ja) |
JP (1) | JP4231899B2 (ja) |
KR (1) | KR101004944B1 (ja) |
CN (1) | CN101558696B (ja) |
AT (1) | ATE521220T1 (ja) |
TW (1) | TW200912959A (ja) |
WO (1) | WO2008152934A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US8043096B2 (en) * | 2008-09-16 | 2011-10-25 | Fuji Polymer Industries Co., Ltd. | Conductive rubber component |
JP2011040812A (ja) * | 2009-08-06 | 2011-02-24 | Panasonic Corp | 携帯無線機 |
US11806521B1 (en) | 2009-09-14 | 2023-11-07 | Tomasz Andrzej Kosierkiewicz | System and method for a dry elastomer electrode in a wearable garment |
US9586038B1 (en) | 2009-09-14 | 2017-03-07 | Tomasz Andrzej Kosierkiewicz | System and method for a dry elastomer electrode |
WO2012026165A1 (ja) | 2010-08-27 | 2012-03-01 | 富士高分子工業株式会社 | 導電性ゴム部品及びその実装方法 |
JP5060647B1 (ja) * | 2011-09-14 | 2012-10-31 | 三菱航空機株式会社 | 航空機の窓、開口部の閉塞体、ガスケットシール |
FR3022429B1 (fr) * | 2014-06-13 | 2018-02-02 | Getelec | Joint de blindage electromagnetique. |
FR3027449B1 (fr) | 2014-10-21 | 2017-10-20 | Commissariat Energie Atomique | Procede ameliore de realisation d'interconnexions pour circuit integre 3d |
EP3250459B1 (en) * | 2015-01-30 | 2019-09-04 | Bombardier Inc. | Conductive sealing member |
CN105142382A (zh) * | 2015-09-17 | 2015-12-09 | 北京精密机电控制设备研究所 | 一种新型导电气密结构 |
JP6670276B2 (ja) * | 2016-11-30 | 2020-03-18 | 富士高分子工業株式会社 | 積層タイプコネクタ及びその製造方法 |
DE102020202025B4 (de) | 2020-02-18 | 2022-01-20 | Continental Automotive Gmbh | Verbindungssystem zur elektrischen Verbindung von Leiterplatten und Verwendung eines Verbindungssystems |
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US4449774A (en) * | 1981-02-05 | 1984-05-22 | Shin-Etsu Polymer Co., Ltd. | Electroconductive rubbery member and elastic connector therewith |
JPS57145399A (en) * | 1981-03-05 | 1982-09-08 | Shinetsu Polymer Co | Shielding gasket |
JP2563308Y2 (ja) * | 1991-03-25 | 1998-02-18 | 信越ポリマー株式会社 | 電磁波シールドパッキン材 |
JPH0685488A (ja) * | 1992-07-15 | 1994-03-25 | Kitagawa Ind Co Ltd | 電磁波シールド材 |
JPH09254297A (ja) * | 1996-03-21 | 1997-09-30 | Kureha Chem Ind Co Ltd | 導電性を有する積層樹脂成形体 |
EP1032616A4 (en) * | 1997-10-23 | 2001-04-11 | Aar Cornelis P J V D | RUBBER TO METAL LIABILITY THROUGH SILANE COUPLING REAGENTS |
CN101427618B (zh) | 1998-12-15 | 2011-04-20 | 万加德产品股份有限公司 | 电磁干扰屏蔽装置 |
US6613976B1 (en) | 1998-12-15 | 2003-09-02 | Vanguard Products Corporation | Electromagnetic interference shielding gasket |
EP1284590A1 (de) | 2001-08-14 | 2003-02-19 | Swissvoice AG | Vorrichtungen zur Kontaktierung von Anschlussleitungen mittels eines eleastischen, geschichteten Verbindungselementes |
NL1019088C2 (nl) | 2001-10-02 | 2003-04-08 | Stork Screens Bv | Tegen straling beschermende pakking, alsmede werkwijze voor het vervaardigen daarvan. |
JP4074173B2 (ja) | 2002-10-10 | 2008-04-09 | 信越ポリマー株式会社 | 押釦スイッチ用部材及びその製造方法 |
-
2008
- 2008-06-02 AT AT08777079T patent/ATE521220T1/de not_active IP Right Cessation
- 2008-06-02 CN CN2008800010970A patent/CN101558696B/zh not_active Expired - Fee Related
- 2008-06-02 EP EP08777079A patent/EP2073619B1/en not_active Not-in-force
- 2008-06-02 JP JP2008542121A patent/JP4231899B2/ja not_active Expired - Fee Related
- 2008-06-02 US US12/310,512 patent/US7976927B2/en not_active Expired - Fee Related
- 2008-06-02 WO PCT/JP2008/060128 patent/WO2008152934A1/ja active Application Filing
- 2008-06-02 KR KR1020097006170A patent/KR101004944B1/ko not_active IP Right Cessation
- 2008-06-11 TW TW097121676A patent/TW200912959A/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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JPWO2008152934A1 (ja) | 2010-08-26 |
JP4231899B2 (ja) | 2009-03-04 |
ATE521220T1 (de) | 2011-09-15 |
CN101558696A (zh) | 2009-10-14 |
WO2008152934A1 (ja) | 2008-12-18 |
CN101558696B (zh) | 2011-03-02 |
EP2073619A1 (en) | 2009-06-24 |
EP2073619A4 (en) | 2010-10-27 |
TW200912959A (en) | 2009-03-16 |
KR101004944B1 (ko) | 2010-12-28 |
US7976927B2 (en) | 2011-07-12 |
KR20090074745A (ko) | 2009-07-07 |
TWI379313B (ja) | 2012-12-11 |
US20100000781A1 (en) | 2010-01-07 |
EP2073619B1 (en) | 2011-08-17 |
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