WO2013011918A1 - ガスケット材料 - Google Patents
ガスケット材料 Download PDFInfo
- Publication number
- WO2013011918A1 WO2013011918A1 PCT/JP2012/067829 JP2012067829W WO2013011918A1 WO 2013011918 A1 WO2013011918 A1 WO 2013011918A1 JP 2012067829 W JP2012067829 W JP 2012067829W WO 2013011918 A1 WO2013011918 A1 WO 2013011918A1
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- WO
- WIPO (PCT)
- Prior art keywords
- gasket material
- rubber layer
- rubber
- parts
- weight
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0207—Materials belonging to B32B25/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/08—Closed cell foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/536—Hardness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2581/00—Seals; Sealing equipment; Gaskets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/026—Crosslinking before of after foaming
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/22—Expandable microspheres, e.g. Expancel®
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/044—Micropores, i.e. average diameter being between 0,1 micrometer and 0,1 millimeter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/06—Flexible foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/02—Copolymers with acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2313/00—Characterised by the use of rubbers containing carboxyl groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/02—Copolymers with acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2413/00—Characterised by the use of rubbers containing carboxyl groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0607—Rubber or rubber derivatives
- C09K2200/0612—Butadiene-acrylonitrile rubber
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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
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249976—Voids specified as closed
Definitions
- the present invention relates to a gasket material, and more particularly to a gasket material having a foam rubber layer formed on at least one side of a metal plate.
- stacked the non-foamed rubber layer is known as a gasket with which an engine etc. of a vehicle are mounted
- Such metal gaskets exhibit excellent sealability by being provided with a bead, and generally exhibit excellent sealability when the surface roughness of the mating material is 12.5 Ra or less, but is sufficient at more than that. Sealability may not be ensured, and metal gaskets are sealed by concentrating bolt load on the bead (embossed) portion, and therefore if seal cavities exist across bead lines, sufficient sealability can not be obtained.
- Patent Document 1 There is also known a metal gasket in which a foamed rubber layer is laminated to a metal gasket in which these unfoamed rubber layers are laminated.
- a metal gasket on which this foamed rubber layer is laminated can seal a mating material with rough surface roughness and voids, but in general, if the rubber layer before foaming does not have a thickness of about 70 ⁇ m or more, it may foam. It becomes difficult, especially when the expansion ratio is doubled or more.
- the foamed rubber layer is crushed under high temperature and high pressure because the rubber layer before foaming is thick, and the axial force of the bolt is reduced.
- a foamed rubber layer in order to obtain a foamed rubber layer, generally, there are a microcapsule method and a thermal decomposition method using a chemical blowing agent. Since the foamed rubber layer obtained by the microcapsule method has a small expansion ratio, its effect on the seal is small, and many of the foamed rubber layers are single foam (foam cells are independent of each other). Under negative temperature), there is shrinkage of solitary foam, and it causes axial force decrease of bolt, and when seal surface pressure is low, the foam rubber layer does not completely collapse, so the function and performance of foam rubber layer during use And there is a problem that stress relaxation of bolt axial force occurs.
- a foam rubber layer is formed on both sides or one side of a steel plate, and in a gasket material for forming a gasket mounted on a vehicle engine, before foaming of the foam rubber layer.
- the gasket material in which the foam rubber layer is formed on at least one surface of the metal plate via the adhesive layer has a large compression due to the presence of the foam rubber layer formed by the closed cell structure or the open cell structure. Since it has resiliency, there is an advantage that a gasket having a good sealability can be obtained only by punching it into a predetermined shape without the need for embossing or the like for achieving the seal performance.
- the gasket material in which the foam rubber layer is formed is inferior in physical properties such as tensile strength and stress relaxation property of the foam rubber layer portion, and therefore blowout of the foam layer is observed at the time of high pressure sealing.
- the conventional foamed rubber layer may have a large foamed cell diameter, and may have a mixture of closed cells and open cells, in which case fluid penetration through the open cell portion takes place, and Since the stress relaxation property is also large, there is a disadvantage that the sealing performance at low contact pressure is reduced.
- Patent Document 3 solves this problem using a gasket material formed by forming a foamed rubber layer containing microcapsule-like expanded particles which are thermally expanded with a low boiling point hydrocarbon expanding agent.
- Patent Document 4 attempts to improve (improve) corrosiveness by using a quinoid crosslinking system.
- Patent Document 4 it is difficult to use as a gasket material for which compression set is large, and embrittlement occurs due to air heating and aging, and thus, it is assumed that the temperature is increased for automotive applications and the like.
- the seal material achieves low corrosiveness to electronic circuits, and the light weight of the material to be sealed As it is necessary to seal a low-rigidity material with insufficient precision that has not only hollow but also undulation as the cost and cost are reduced, it is necessary to suppress the decrease in axial force of the bolt more than ever.
- the object of the present invention is to suppress corrosion due to sulfur element, to be used as a seal part for products that do not like corrosion of electronic parts etc., and also for low-rigidity low rigidity materials with insufficient precision such as having cavities. It is possible to provide a gasket material that can be sealed with a plastic seal, is less likely to cause plastic flow (swelling) under pressure, and can suppress the reduction in axial force of a bolt.
- a gasket material in which a foam rubber layer having a closed cell structure is formed on at least one surface side of a metal plate via an adhesive layer, A gasket material characterized in that the foamed rubber layer is made of a carboxyl group-modified nitrile rubber, and the foamed rubber layer has an expansion ratio of 2.0 to 3.0 and is crosslinked by an epoxy compound.
- the present invention since corrosion due to sulfur element can be suppressed, it can be used as a seal part for products that resist corrosion such as electronic parts, and low rigidity pressure is also applied to low-rigidity materials with insufficient precision. It is possible to provide a gasket material which is less likely to cause sealing, plastic flow (swelling) under pressure, and can suppress reduction in axial force of a bolt.
- the rubber composition polymer used for the foamed rubber layer composition of the present invention is a carboxyl group-modified nitrile rubber (in the present invention, also referred to as a carboxyl group-modified nitrile rubber polymer)
- a group-modified acrylonitrile-butadiene copolymer rubber is preferably used.
- carboxyl group-modified nitrile rubber those having various monomer ratios can be used, and a part of the butadiene component may be hydrogenated.
- the bound acrylonitrile content is preferably in the range of 18 to 48%, and more preferably in the range of 31 to 42%. If the bound acrylonitrile content is smaller than this range, the adhesion to the adhesive will be poor, and if larger than this range, the cold resistance will be impaired.
- the Mooney viscosity ML 1 + 4 (100 ° C.) is in the range of 30 to 85, more preferably in the range of 35 to 70. When the Mooney viscosity is less than 30, the plastic flow (swelling) at the time of pressurization becomes large.
- the carboxyl group-modified nitrile rubber may be used alone, or a compatible polymer such as acrylonitrile-butadiene rubber, liquid acrylonitrile-butadiene rubber, hydrogenated acrylonitrile-butadiene rubber and styrene-butadiene rubber. Used in combination with the polymer.
- the carboxyl group-modified nitrile rubber used in the present invention can be obtained as a commercial product, for example, “KRYNAC X7.50”, “KRYNAC X7.40”, “KRYNAC X1.46”, “KRYNAC X1.60”, KRYNAC X 9.50 ",” KRYNAC 221 “(above, manufactured by Bayer Polsir GmbH),” Nipol NX 775 “,” Nipol 1072 “,” Nipol DN 631 “,” Nipol DN 601 "(above, manufactured by Nippon Zeon Co., Ltd.), and” N 632 S Commercial products, such as "(made by JSR)" can be used.
- a vulcanizing agent and a foaming agent are blended to a carboxyl group-modified nitrile rubber, and preferably, a vulcanization accelerator, carbon black, an inorganic filler, zinc oxide such as active zinc flower, etc., antiaging An agent, a plasticizer, etc. are added and the foam rubber composition used for this invention is prepared.
- thermosetting liquid or solid synthetic resin having two or more reactive epoxy groups is used, and in addition to general epoxy resins such as bisphenol A type and bisphenol F type, phenoxy resin and biphenyl resin Alkyl glycidyl ether etc. can be used individually or in combination of multiple.
- a vulcanization accelerator is preferably compounded, and as a preferable vulcanization accelerator, a crosslinking rate can be obtained by using dicyanamide, 2-ethyl-4-methylimidazole, hexamethylenetetramine or the like singly or in combination. Can be improved. Among them, 2-ethyl-4-methylimidazole is preferable from the viewpoint of the ability to accelerate vulcanization.
- foaming agent thermally expandable microcapsules in which various organic or inorganic foaming agents or low boiling point hydrocarbon expanding agents are enclosed can be used, but microcapsules are preferable in that they can easily obtain an independent foamed structure.
- thermoplastic resin such as PAN resin etc.
- PAN resin poly(ethylene terephthalate)
- the shell material is a thermosetting resin
- the durability of the independent foam structure under pressure is further improved, which is preferable.
- the diameter of the foam structure when the foam is spherical, it may be the diameter as it is, but when it is not spherical, it means the diameter converted to the sphere.
- the foaming ratio of the independent foamed structure is 2.0 to 3.0 times, preferably 2.3 to 2.8 times. If the expansion ratio is less than 2.0 times, the production speed in the continuous line is reduced, the productivity is poor, and the low surface pressure and the sealability with respect to the blowhole counterpart are inferior. On the other hand, when the expansion ratio exceeds 3.0 times, the occupied volume of the rubber decreases, plastic flow (swelling) by pressure is likely to occur, and a reduction in axial force of the bolt is induced.
- the blending amount of the foaming agent for satisfying the preferable foaming ratio is preferably 5 to 10 parts by weight, and more preferably 6 to 9 parts by weight with respect to 100 parts by weight of the carboxyl group-modified nitrile rubber polymer.
- microsphere F100D As a foaming agent which can be obtained as a commercial item, Matsumoto Yushi-Seiyaku Co., Ltd. "microsphere F100D” etc. are mentioned.
- Carbon black As carbon black, furnace black or thermal black having high reinforcement is used. In the case of using thermal black, in addition to the enhancement of the reinforcing property, it is particularly preferable because the rubber paste coating property is improved.
- the furnace black or the thermal black may be used alone or in combination.
- the compounding amount of carbon black is preferably 5 to 120 parts by weight, more preferably 10 to 100 parts by weight, per 100 parts by weight of the carboxyl group-modified nitrile rubber polymer of the present invention. If the amount is smaller than this range, the kneadability will deteriorate, which may lower productivity, which is not preferable. If the amount is larger than this range, rubber hardness may increase and rubber elasticity may not be obtained, which is not preferable.
- foamed rubber layer composition of the present invention other necessary ingredients are appropriately blended in addition to the above components.
- the inorganic filler can be blended in combination with carbon black or in place of carbon black.
- inorganic fillers examples include silica, basic magnesium carbonate, activated calcium carbonate, special calcium carbonate, ultrafine magnesium carbonate, hard clay, barium sulfate, talc, graphite, mica, kaolin, calcium silicate, wollastonite and the like. These may be used alone or in combination of two or more.
- inorganic fillers is effective for preventing the peeling of the adhesive layer at the time of high temperature immersion, and exhibits the effect of improving the water resistance.
- natural silica having an average particle size of about 20 ⁇ m or less is preferable as silica, and more preferably, higher effects can be obtained when natural silica surface-treated with a silane coupling agent or the like is used.
- the compounding amount of the inorganic filler is preferably 5 to 120 parts by weight, and more preferably 10 to 100 parts by weight, per 100 parts by weight of the carboxyl group-modified nitrile rubber polymer. If the blending amount is less than this, adhesion may not be obtained, which is not preferable. On the other hand, if the amount is more than this range, the rubber hardness may be increased, and rubber elasticity may not be obtained, which is not preferable.
- plasticizers such as plasticizers, processing aids such as stearic acid and paraffin wax, and acid acceptors such as zinc oxide and magnesium oxide are appropriately added and used.
- processing aids such as stearic acid and paraffin wax
- acid acceptors such as zinc oxide and magnesium oxide
- Anti-aging agent As an antiaging agent, a general commercial product which does not contain a sulfur element such as imidazole and thiourea can be used.
- a sulfur atom-free antioxidant such as a p-phenylenediamine antioxidant.
- p-phenylenediamine-based antioxidants include N-isopropyl-N'-phenyl-p-phenylenediamine (IPPD) and N-1,3-dimethylbutyl-N'-phenyl-p-phenylenediamine (6PPD) And N- (1-methylheptyl) -N'-phenyl-p-phenylenediamine (8PPD).
- IPPD N-isopropyl-N'-phenyl-p-phenylenediamine
- 6PPD N-1,3-dimethylbutyl-N'-phenyl-p-phenylenediamine
- 8PPD N- (1-methylheptyl) -N'-phenyl-p-phenylenediamine
- Kneading of the foam rubber composition raw material described above is performed using an intermixer, a kneader such as a kneader or a Banbury mixer, an open roll, or the like. After kneading, the rubber compound is dissolved or dispersed in a solvent having a boiling point of 250 ° C. or less, for example, an aromatic hydrocarbon such as toluene, a ketone such as methyl ethyl ketone or methyl isobutyl ketone, or a mixed solvent thereof. It is prepared as a coating solution with a concentration of 25 to 50%.
- a solvent having a boiling point of 250 ° C. or less for example, an aromatic hydrocarbon such as toluene, a ketone such as methyl ethyl ketone or methyl isobutyl ketone, or a mixed solvent thereof. It is prepared as a coating solution with a concentration of 25 to 50%.
- the gasket material of the present invention is obtained by laminating the above-mentioned foamed rubber layer on one side or both sides of a metal plate, as necessary, via a primer layer and an adhesive layer.
- the metal plate is not particularly limited, and metal plates such as stainless steel plates (ferritic stainless steel, martensitic stainless steel, austenitic stainless steel), SPCC steel plates (cold-rolled steel plates), and aluminum steel plates can be used.
- the metal plate which roughened the surface by shot blast, scotch blast, a hairline, dull finish etc. can also be used.
- a primer layer is preferably formed on these metal plates. Since the primer layer is expected to significantly improve the heat resistance and water resistance of the rubber-metal laminate of the rubber-metal laminate, the primer layer should be formed particularly when the rubber-metal laminate is used as a gasket material. desirable.
- zinc phosphate coating iron phosphate coating, chromate coating, vanadium, zirconium, titanium, molybdenum, compounds of metals such as tungsten, manganese, zinc, cerium, etc., particularly inorganic coatings such as oxides of these metals And organic coatings such as silane, phenol resin, epoxy resin, and polyurethane can be used.
- the metal plate is preferably degreased by alkaline degreasing treatment etc., and then a metal plate having a rust-preventing film formed by chromate-type rustproofing treatment or nonchromate-type rustproofing treatment, and in SPCC steel plate, zinc phosphate or phosphoric acid An iron coating or a similar coating may be formed.
- the thickness of the metal plate is preferably a metal plate having a thickness of about 0.1 to 1 mm, and more preferably about 0.2 to 0.8 mm.
- the adhesive is obtained by dissolving an adhesive resin, a crosslinking agent, a crosslinking accelerator and an unvulcanized rubber composition for an adhesive in an organic solvent by a general method, and coating the adhesive solution on a metal plate Form an adhesive layer.
- the adhesive resin it is preferable to use one or two or more resins selected from a phenol resin, an epoxy resin, and a xylene resin in combination.
- thermosetting phenol resins such as cresol novolak type, cresol resol type, alkyl modified type, etc., can be mentioned.
- an epoxy resin a cresol novolac modified epoxy resin is generally mentioned
- a hardening agent bisphenol novolak type phenol resin is suitably used, and an imidazole compound is suitably used as a hardening catalyst, respectively.
- the xylene resin includes any modified xylene resin such as phenol modified type.
- Hexamethylenetetramine or the like is preferably used as a crosslinking agent for the adhesive, and 2-ethyl-4-methylimidazole or the like is preferably used as a crosslinking accelerator.
- the rubber composition for adhesive is NBR or HNBR rubber composition, and NBR having a nitrile content of 18 to 48%, HNBR or carboxyl group modified NBR, carbon black, inorganic filler, zinc oxide, sulfur oxide or organic peroxide And a cross-linking agent, a cross-linking accelerator or a cross-linking coagent.
- a sulfur atom-free crosslinking agent and a crosslinking accelerator or coagent are used. It is for using a gasket material suitably as a gasket material arranged around electronic parts.
- an organic silane compound is used, and as the organic silane compound, an amino group-containing alkoxysilane or a vinyl group-containing alkoxysilane can be used.
- the amino group-containing alkoxysilane include ⁇ -aminopropyltriethoxysilane, ⁇ -aminopropyltrimethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropyltrimethoxysilane, N- ⁇ - (amino) Ethyl) - ⁇ -aminopropyltriethoxysilane or the like is used.
- vinyl group containing alkoxysilane vinyl trimethoxysilane, vinyl triethoxysilane etc. are used, for example. These may be used alone or in combination of two or more.
- the organic solvent is not particularly limited as long as it simultaneously dissolves the adhesive resin, the crosslinking agent, the crosslinking accelerator, and the unvulcanized rubber composition for adhesive.
- aromatic hydrocarbons such as toluene and ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone, alcohol organic solvents such as isopropyl alcohol, and mixed solvents of two or more of them can be mentioned.
- the adhesive solution is prepared with an organic solvent to have a solid concentration of 0.5 to 20%, and is coated on a metal plate, preferably on a metal plate having a primer layer formed thereon. Thereafter, the adhesive layer is formed by air drying at room temperature and further drying at about 100 to 250 ° C. for about 5 to 30 minutes (the crosslinking reaction may be performed).
- the adhesive layer may have a single-layer structure or a multi-layer structure.
- a phenolic adhesive layer containing an organometallic compound is formed on the primer layer, and a phenolic adhesive layer containing the nitrile rubber composition is further provided thereon, and the adhesive is applied in multiple layers. And those having a rubber layer formed thereon.
- a coating solution of a foamed rubber composition can be applied onto an adhesive layer formed on a metal plate and oven-cured to obtain a rubber layer.
- the coating liquid is prepared to a viscosity suitable for each coating method.
- the viscosity is preferably 2,000 to 5,000 mPa ⁇ s.
- screen printing 5,000 to 30,000 mPa ⁇ s is preferable, and it is desirable to adjust with an organic solvent having a high boiling point and being hard to volatilize.
- the solid content concentration is appropriately adjusted according to the air temperature and the liquid temperature.
- the coating solution prefferably coats the coating solution to a dry thickness of 40 to 90 ⁇ m, preferably 50 to 75 ⁇ m, and to perform vulcanization bonding at 150 to 250 ° C. under no pressure for 10 seconds to 10 minutes.
- solid release agents such as paraffin wax, graphite, polyethylene, PTFE, and cellulose fibers may be further laminated via a binder to prevent adhesion of the rubber surface after crosslinking.
- the rubber-metal laminate (gasket material) obtained in this manner is processed into a desired shape by, for example, a punch or the like, and is suitably used as a gasket.
- Each of the above compounding components was kneaded using an open roll to prepare a rubber compound.
- an adhesive layer is formed on a metal plate (SPCC) on which an antirust coating has been formed, and then the rubber compound is coated to a thickness of 150 ⁇ m after drying, and then oven crosslinking is performed by heating air at 210 ° C. for 3 minutes. The following evaluation was performed.
- SPCC metal plate
- a sample with a total thickness change of 60% or less was rated ⁇ , a sample with 60-80% was rated ⁇ , and a sample with 80% or more was rated x.
- Adhesiveness after immersion in distilled water The adhesion of the gasket after immersion in distilled water at 100 ° C. for 70 hours in a pressure-resistant container was evaluated in accordance with the drawing test JIS K 6894 by the evaluation of a full score of 5 points. The higher the score, the better the result.
- Example 2 A rubber compound is prepared in the same manner as in Example 1 except that 1.5 parts by weight of 2-ethyl-4-methylimidazole is added as a crosslinking accelerator, and a gasket material is obtained similarly. I made an evaluation.
- Example 3 A rubber compound was prepared in the same manner as in Example 2 except that the compounding amount of carbon black was changed to 10 parts by weight, and a gasket material was similarly obtained, and evaluation was similarly performed.
- Example 4 A rubber compound was prepared in the same manner as in Example 2 except that the compounding amount of carbon black was changed to 100 parts by weight, and a gasket material was similarly obtained, and evaluation was similarly performed.
- Example 5 A rubber compound is prepared in the same manner as in Example 2 except that the carboxyl group-modified NBR polymer is changed to 4 parts by weight, and 96 parts by weight of NBR polymer ("N237" manufactured by JSR Corporation) is further added. Similarly, a gasket material was obtained and evaluated in the same manner.
- Example 6 A rubber compound is prepared in the same manner as in Example 2 except that the carboxyl group-modified NBR polymer is changed to "Nipol 1072" (carboxyl group content: 0.075 ephr) manufactured by ZEON Corporation, and the gasket material is also similarly And evaluated similarly.
- Example 7 A rubber compound is prepared in the same manner as in Example 3 except that 10 parts by weight of an inorganic filler ("VM 56" manufactured by Hoffman Minerals Co., Ltd.) is blended, and a gasket material is obtained in the same manner. went.
- VM 56 manufactured by Hoffman Minerals Co., Ltd.
- Example 8 A rubber compound is prepared in the same manner as in Example 3 except that 10 parts by weight of wollastonite ("NYAD 400" manufactured by NYCO) is blended, and a gasket material is obtained in the same manner and evaluated in the same manner.
- wollastonite (“NYAD 400" manufactured by NYCO)
- Example 9 A rubber compound was prepared in the same manner as in Example 2 except that the crosslinking agent was changed to "YED216D” manufactured by Japan Epoxy Resins Co., and a gasket material was obtained in the same manner, and evaluation was similarly performed.
- Example 1 A rubber compound is prepared in the same manner as in Example 1 except that the carboxyl group-modified NBR polymer is replaced by an NBR polymer ("N 237" manufactured by JSR Corporation), and a gasket material is obtained in the same manner and evaluated similarly. Did.
- Example 2 A rubber compound is prepared in the same manner as in Example 1 except that the crosslinking agent is replaced by 5 parts by weight of a quinoid compound ("Barnock GM” manufactured by Ouchi Emerging Chemical Co., Ltd.), and a gasket material is obtained similarly. The same evaluation was done.
- Example 3 A rubber compound was prepared in the same manner as in Example 2, except that the blending amount of the thermally expandable microcapsule-based foaming agent ("Matsumoto Microsphere F-100D” manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) was changed to 3 parts by weight. It prepared and also obtained the gasket raw material similarly, and evaluated similarly.
- the thermally expandable microcapsule-based foaming agent (“Matsumoto Microsphere F-100D” manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) was changed to 3 parts by weight. It prepared and also obtained the gasket raw material similarly, and evaluated similarly.
- Example 4 A rubber compound was prepared in the same manner as in Example 2 except that the blending amount of the thermally expandable microcapsule-based foaming agent ("Matsumoto Microsphere F-100D” manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) was changed to 12 parts by weight. It prepared and also obtained the gasket raw material similarly, and evaluated similarly.
- the thermally expandable microcapsule-based foaming agent (“Matsumoto Microsphere F-100D” manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) was changed to 12 parts by weight. It prepared and also obtained the gasket raw material similarly, and evaluated similarly.
- Example 5 A rubber compound was prepared in the same manner as in Example 2, except that the anti-aging agent (Antigen 3C) was changed to an anti-aging agent (2-mercaptobenzimidazole: "Nocrac MB” manufactured by Ouchi Emerging Chemical Co., Ltd.). Similarly, a gasket material was obtained and evaluated in the same manner.
- Antigen 3C an anti-aging agent
- 2-mercaptobenzimidazole "Nocrac MB” manufactured by Ouchi Emerging Chemical Co., Ltd.
- the foamed rubber layer using the carboxyl group-modified NBR polymer of the present invention shown in Examples 1 to 9 is more than the foamed rubber layer using other NBR polymer It is understood that the gasket material is excellent in sealing performance and heat resistance, and is less likely to cause plastic flow (sagging) under pressure, and can suppress a decrease in axial force of the bolt.
- Example 1 shows that the addition of a crosslinking accelerator to the foamed rubber agent of the present invention accelerates the curing speed and is more preferable for suppressing the decrease in axial force.
- the compounding amount of the foaming agent for satisfying the preferable expansion ratio to have the performance of (5) is about 5 to 10 parts by weight with respect to 100 parts by weight of the carboxyl group-modified NBR polymer of the present invention.
- Comparative Example 5 when it is replaced with an antiaging agent (Nocl MB) containing elemental sulfur, it is not suitable for the gasket material of the present invention disposed around electronic parts from the viewpoint of metal corrosion. I understand.
- an antiaging agent Nocl MB
- the gasket material of the present invention can suppress corrosion due to sulfur element, so it can be used as a seal component for products that resist corrosion, such as electronic components, and low surface pressure also for low-rigidity materials with insufficient precision such as having cavities. It is difficult to produce plastic flow (swelling) under pressure, and it is possible to suppress the decrease in axial force of the bolt.
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Abstract
Description
前記発泡ゴム層が、カルボキシル基変性ニトリル系ゴムからなり、且つ該発泡ゴム層の発泡倍率が2.0~3.0倍であり、エポキシ化合物により架橋されたことを特徴とするガスケット材料。
[カルボキシル基変性ニトリルゴム]
本発明の発泡ゴム層組成物に使用されるゴム組成物ポリマーは、ニトリル系ゴムポリマーの中でも、カルボキシル基変性ニトリル系ゴム(本発明では、カルボキシル基変性ニトリル系ゴムポリマーともいう)であり、カルボキシル基変性アクリロニトリル-ブタジエン共重合ゴムが好ましく用いられる。
本発明において、加硫剤としては、エポキシ化合物が用いられる。エポキシ化合物としては、反応性エポキシ基を2個以上持つ熱硬化性の液状もしくは固体の合成樹脂が用いられ、一般的なビスフェノールA型やビスフェノールF型などのエポキシ樹脂の他、フェノキシ樹脂やビフェニル樹脂、アルキルグリシジルエーテルなどを単独あるいは複数を組み合わせて用いることができる。
発泡剤としては、有機または無機の各種発泡剤または低沸点炭化水素膨張剤を封入した熱膨張性マイクロカプセル等を用いることができるが、独立した発泡構造を得やすい点でマイクロカプセルが好ましい。
カーボンブラックとしては、補強性の高いファーネスブラックあるいはサーマルブラックが用いられる。サーマルブラックを用いた場合、補強性向上以外に、ゴム糊塗工性が良好になるので特に好ましい。ファーネスブラックあるいはサーマルブラックを単独で用いてもよいし、併用することもできる。
無機充填剤は、カーボンブラックと併用して、あるいはカーボンブラックに代えて配合することができる。
老化防止剤としては、イミダゾールやチオウレア等の硫黄元素を含まない一般的な市販品を用いることができる。
以上の発泡ゴム組成物原料の混練は、インタミックス、ニーダ、バンバリーミキサ等の混練機あるいはオープンロールなどを用いて行われる。そして、ゴムコンパウンドは、混練後、沸点250℃以下の溶剤、例えばトルエン等の芳香族炭化水素類、メチルエチルケトンやメチルイソブチルケトン等のケトン類またはこれらの混合溶剤などに溶解または分散させて、固形分濃度が25~50%のコーティング溶液として調製される。
本発明のガスケット材料は、金属板の片面又は両面に、必要によりプライマー層、接着剤層を介して、上述の発泡ゴム層を積層させたものである。
カルボキシル基変性NBRポリマー(日本ZEON社製「Nipol NX775」、カルボキシル基含有量0.083EPHR※)(※EPHR=Equivalents per hundred) 100重量部
MTカーボンブラック(キャンカーブ社製「サーマックスN990」) 20重量部
ステアリン酸(ミヨシ油脂社製) 2重量部
老化防止剤(住友化学社製「アンチゲン3C」) 3重量部
熱膨張性マイクロカプセル系発泡剤(松本油脂製薬社製「マイクロスフェアーF100D」) 7.5重量部
可塑剤(アジピン酸ジイソデシル(DIDA))(新日本理化社製「サンソサイザーDIDA」) 8重量部
架橋剤(ジャパンエポキシレジン社製「JER828」) 10重量部
ゴムコンパウンドは、トルエン:メチルエチルケトン=9:1混合溶剤に溶解させて、固形分濃度が25重量%のコーティング溶液とした。
次いで、防錆被膜を形成した金属板(SPCC)に、接着剤層を形成した後、ゴムコンパウンドを乾燥後の厚みが150μmになるようにコーティングした後、210℃で3分間加熱空気によりオーブン架橋させ、ガスケット材料を得て、以下の評価を行った。
(1)得られたゴムコンパウンドについて以下の加硫速度の評価を実施した。
[加硫速度](ISO 6502(1999)に対応するJIS K6300-2(2001)準拠)
ロータレスレオメータを用いて加硫速度について評価した。200℃で3分未満にt90以上の加硫度が得られるものを○、3分以上10分未満でt90以上の加硫度が得られるものを△、それ以上もしくは加硫しないものを×とした。
[発泡倍率]
既述のガスケット素材作製方法に基づき素材を作製し、200℃で3分加硫する前の、発泡前と後の厚み変化から発泡倍率を算出した。すなわち、発泡前が65μmで発泡後は150μm厚であった場合には、本評価による発泡倍率は2.5倍である。
[金属腐食性]
密閉したガラス容器の中に、指標となる銀板、銅板(それぞれ15mm×15mm、厚さ1mm)とガスケットサンプルを密閉して、室温にて3か月放置し、指標の金属が変色するかどうかを確認した。
変色したものを×、変色しなかったものを○とした。
また、X線によって硫黄元素が存在するかどうかについても確認し、変色しなくても硫黄元素が検出されたものについては△と評価した。
[初期シール性]
低面圧下(100kPa)での空気リーク量を測定した。
リーク量が多かったものを×、リーク量が少なかったものを○とした。
[軸力測定]
ボルトの軸力測定として応力緩和試験(JIS K6263に準拠)を実施し、そこからガスケット素材の全厚変化を求めた。
全厚変化が60%以下のものを○、60~80%のものを△、80%以上のものを×とした。
[蒸留水浸漬後の接着性]
耐圧容器中で蒸留水100℃、70時間浸漬したあとのガスケットの接着性を描画試験JIS K6894に準拠し、5点満点の評価で評価した。点数が高いほど良好な結果を示す。
[耐熱性](耐空気加熱老化試験)
100℃に設定したギアオーブン中で70時間暴露したあとの硬度変化(DuroメータAでの瞬間値)を評価した。
硬度変化が4ポイント以下を○、5~6ポイントを△、7ポイント以上を×とした。
架橋促進剤として2-エチル-4-メチルイミダゾールを1.5重量部添加した以外は、実施例1の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
カーボンブラックの配合量を10重量部に変更した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
カーボンブラックの配合量を100重量部に変更した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
カルボキシル基変性NBRポリマーを4重量部に変更し、そしてさらにNBRポリマー(JSR社製「N237」)を96重量部添加した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
カルボキシル基変性NBRポリマーを日本ZEON社製「Nipol 1072」(カルボキシル基含有量0.075ephr)に変更した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
無機充填剤(ホフマンミネラル社製「VM56」)を10重量部配合した以外は、実施例3の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
ウォラストナイト(NYCO社製「NYAD400」)を10重量部配合した以外は、実施例3の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
架橋剤をジャパンエポキシレジン社製「YED216D」に変更した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
カルボキシル基変性NBRポリマーをNBRポリマー(JSR社製「N237」)に代えた以外は、実施例1の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
架橋剤をキノイド化合物(大内新興化学社製「バルノックGM」)5重量部に代えた以外は、実施例1の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
熱膨張性マイクロカプセル系発泡剤(松本油脂製薬社製「マツモトマイクロスフェアーF-100D」)の配合量を3重量部に変更した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
熱膨張性マイクロカプセル系発泡剤(松本油脂製薬社製「マツモトマイクロスフェアーF-100D」)の配合量を12重量部に変更した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
老化防止剤(アンチゲン3C)を老化防止剤(2-メルカプトベンズイミダゾール:大内新興化学社製「ノクラックMB」)に変更した以外は、実施例2の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
架橋剤の代わりに硫黄1.2重量部、加硫促進剤(1)(テトラメチルチウラムモノスルフィド;住友化学社製「ソクシノールTS」)2重量部、及び加硫促進剤(2)(ジベンゾチアジルジスルフィド;住友化学社製「ソクシノールDM」)0.5重量部を配合した以外は、実施例1の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
架橋剤の代わりにキノイド化合物(大内新興化学社製「バルノックGM」)5重量部と架橋促進剤(大内新興化学社製「バルノックPM」)5重量部を配合した以外は、比較例1の方法と同様にして、ゴムコンパウンドを調製し、また同様にガスケット素材を得て、同様に評価を行った。
Claims (3)
- 金属板の少なくとも一方の面側に、接着剤層を介して、独立気泡構造を有する発泡ゴム層を形成させたガスケット材料において、
前記発泡ゴム層が、カルボキシル基変性ニトリル系ゴムからなり、且つ該発泡ゴム層の発泡倍率が2.0~3.0倍であり、エポキシ化合物により架橋されたことを特徴とするガスケット材料。 - 前記発泡ゴム層が、架橋促進剤として2-エチル-4-メチルイミダゾールをさらに含むことを特徴とする請求項1記載のガスケット材料。
- 電子回路等に用いることを特徴とする請求項1又は2記載のガスケット材料。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP12814257.7A EP2735776B1 (en) | 2011-07-19 | 2012-07-12 | Gasket material |
CN201280036017.1A CN103717948B (zh) | 2011-07-19 | 2012-07-12 | 密封垫圈材料 |
JP2013524694A JP5971247B2 (ja) | 2011-07-19 | 2012-07-12 | ガスケット材料 |
US14/131,789 US9381721B2 (en) | 2011-07-19 | 2012-07-12 | Gasket material |
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JP2011158456 | 2011-07-19 | ||
JP2011-158456 | 2011-07-19 |
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WO2013011918A1 true WO2013011918A1 (ja) | 2013-01-24 |
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PCT/JP2012/067829 WO2013011918A1 (ja) | 2011-07-19 | 2012-07-12 | ガスケット材料 |
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EP (1) | EP2735776B1 (ja) |
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WO2016158052A1 (ja) * | 2015-03-27 | 2016-10-06 | Nok株式会社 | プレート一体ガスケットの成形方法 |
JP2018176435A (ja) * | 2017-04-04 | 2018-11-15 | Nok株式会社 | ゴム金属積層体およびガスケット |
JP2019065104A (ja) * | 2017-09-29 | 2019-04-25 | 積水化学工業株式会社 | ゴム系樹脂独立気泡発泡シート及びその製造方法 |
JP2019065169A (ja) * | 2017-09-29 | 2019-04-25 | 積水化学工業株式会社 | ゴム系樹脂架橋発泡体及び止水シール材 |
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JP6099535B2 (ja) * | 2013-09-26 | 2017-03-22 | 住友理工株式会社 | 導電性ロールおよびその製造方法 |
US10731762B2 (en) * | 2015-11-16 | 2020-08-04 | Baker Hughes, A Ge Company, Llc | Temperature activated elastomeric sealing device |
JP7347197B2 (ja) * | 2019-12-19 | 2023-09-20 | トヨタ自動車株式会社 | 回転電機コアの製造方法および製造装置 |
WO2021187028A1 (ja) * | 2020-03-17 | 2021-09-23 | Nok株式会社 | ゴム金属積層体及びガスケット |
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Also Published As
Publication number | Publication date |
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CN103717948B (zh) | 2017-02-08 |
JP5971247B2 (ja) | 2016-08-17 |
EP2735776A4 (en) | 2015-05-06 |
US9381721B2 (en) | 2016-07-05 |
CN103717948A (zh) | 2014-04-09 |
EP2735776A1 (en) | 2014-05-28 |
US20140154497A1 (en) | 2014-06-05 |
EP2735776B1 (en) | 2016-04-27 |
JPWO2013011918A1 (ja) | 2015-02-23 |
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