WO2014208113A1 - ゴム-金属積層ガスケット素材 - Google Patents
ゴム-金属積層ガスケット素材 Download PDFInfo
- Publication number
- WO2014208113A1 WO2014208113A1 PCT/JP2014/051513 JP2014051513W WO2014208113A1 WO 2014208113 A1 WO2014208113 A1 WO 2014208113A1 JP 2014051513 W JP2014051513 W JP 2014051513W WO 2014208113 A1 WO2014208113 A1 WO 2014208113A1
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- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- titanium
- metal laminated
- surface treatment
- gasket material
- 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
- B32B15/06—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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads
-
- 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
-
- 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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
-
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
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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
- F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
- F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
- F16J15/122—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement generally parallel to the surfaces
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- 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
-
- 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
-
- 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
- B32B2255/26—Polymeric coating
-
- 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
- B32B2255/28—Multiple coating on one surface
-
- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- 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
-
- 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
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- 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
-
- 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
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/50—Additional features of adhesives in the form of films or foils characterized by process specific features
- C09J2301/504—Additional features of adhesives in the form of films or foils characterized by process specific features process of pretreatment for improving adhesion of rubber on metallic surfaces
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/166—Metal in the pretreated surface to be joined
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2421/00—Presence of unspecified rubber
- C09J2421/006—Presence of unspecified rubber in the substrate
Definitions
- the present invention relates to a rubber-metal laminated gasket material. More specifically, the present invention relates to a rubber-metal laminated gasket material suitably used as an engine cylinder head gasket or the like.
- Mild steel and stainless steel are mainly used as the metal material for engine cylinder head gasket materials that require water resistance, LLC (long life coolant) resistance, and heat resistance. Even if an agent is applied and adhered to rubber, the liquid-resistant adhesion durability is poor, and when the immersion test is performed in which this rubber metal laminate is immersed in water, LLC or the like, adhesion peeling occurs.
- a method of treating the surface of a stainless steel plate such as zinc phosphate treatment or iron phosphate treatment is used. These methods immerse the degreased steel sheet in an acidic chemical solution to produce an insoluble film on the steel sheet, and ensure adhesion with rust prevention and adhesive.
- problems such as generation of sludge (industrial waste) and the necessity of constantly injecting a drug because the drug component is reduced by the reaction, resulting in high costs.
- Patent Documents 1 and 2 The present applicant has previously proposed that a coating chromate treatment is performed on stainless steel as a pretreatment for applying a vulcanized adhesive to improve resistance to water, LLC, etc. (Patent Documents 1 and 2). .
- the coating-type chromate treatment is not preferable from the viewpoint of environmental measures because it contains Cr 6+ ions.
- Patent Document 3 As a method not using zinc phosphate, iron phosphate, chromium, etc., surface treatment agents containing organic resin, silica, fluoride-derived titanium and zirconia have been proposed (see Patent Document 3). Since it is contained, it is necessary to remove fluorine from wastewater, which complicates the equipment.
- JP 2000-006307 A Japanese Patent Laid-Open No. 11-221875 Japanese Patent No. 5,050,316 WO 2011/002040 Japanese Patent Laid-Open No. 7-165953
- An object of the present invention is to provide a rubber-metal laminated gasket material that contains neither chromium nor fluorine and has excellent LLC resistance under high temperature conditions.
- An object of the present invention is to provide a rubber-metal laminated gasket material in which a surface treatment agent layer, an adhesive layer, and a rubber layer are sequentially laminated on a metal plate, wherein the surface treatment agent layer does not contain chromium and does not contain fluorine.
- a surface treatment agent having a mixing ratio of 20 to 90% by weight of titanium compound and 10 to 80% by weight of alumina, and a content of 1 to 20% by weight as metallic titanium, the coating amount on one side being 30 to 1000 mg / This is achieved by a rubber-metal laminated gasket material that is formed by applying to m 2 .
- the rubber-metal laminated gasket material according to the present invention does not contain either chromium or fluorine, and does not cause adhesion peeling even in a heat resistance test method in LLC considering the actual use environment of an engine cylinder head gasket, for example. It has the effect of exhibiting excellent LLC resistance even under high temperature conditions.
- the surface treatment agent is fluorine-free, there is no need to remove fluorine from wastewater, and the surface treatment does not form a film by a chemical reaction with a stainless steel plate like zinc phosphate treatment. Therefore, there is an excellent effect that sludge is not generated at all.
- metal plate mild steel, stainless steel plate, aluminum, aluminum die cast or the like is used.
- stainless steel plate SUS301, SUS301H, SUS304, SUS430, or the like is used. Since the plate thickness is used for gaskets, a thickness of about 0.1 to 2 mm is generally used.
- a surface treatment agent that does not contain chromium and contains a fluorine-free titanium compound and alumina is applied. At this time, the metal plate is preferably used after roughening treatment and alkali degreasing treatment.
- the compound weight is a mixture of 20 to 90% by weight of fluorine-free titanium compound and 10 to 80% by weight of alumina, preferably 30 to 70% by weight of fluorine-free titanium compound and 30 to 70% by weight of alumina.
- a material having a ratio and a content of titanium metal of 1 to 20% by weight, preferably 1 to 15% by weight is used.
- fluorine-free titanium compound examples include titanium compounds containing no fluorine such as titanium lactate, ammonium lactate ammonium, titanium sulfate, titanium oxysulfate, titanium ammonium sulfate, titanium nitrate, titanium oxynitrate, and ammonium ammonium nitrate, and preferably Titanium ammonium lactate and ammonium ammonium nitrate are used. These can be used in combination with one or more fluorine-free titanium compounds. Further, alumina sol is used as alumina, and commercially available products such as Nissan Chemical Industries product alumina sol-200 and alumina sol-520 can be used as they are.
- each of the above components is an essential component, and the surface treatment agent prepared by mixing them is 30 to 1000 mg / m 2 by a method such as dipping, spraying, brush printing, roll coating, etc. on both surfaces of the metal plate.
- it is applied at a single-side coating amount (weight per unit area) of 100 to 1,000 mg / m 2 , dried at room temperature or warm air, and then baked at 100 to 250 ° C. for 1 to 20 minutes. If the coating amount is larger than this, peeling will occur at the location immersed in the LLC solution, while if the coating amount is smaller than this, the adhesion between the metal and the rubber will decrease. End up.
- thermosetting phenol resin any thermosetting phenol resin such as a cresol novolac type phenol resin, a cresol resol type phenol resin, or an alkyl-modified phenol resin can be used.
- the epoxy resin is preferably a cresol novolac type epoxy resin. In this case, a bisphenol novolac type phenol resin is used as a curing agent, and an imidazole compound is used as a curing catalyst.
- These resin-based vulcanized adhesives generally have an alcohol organic solvent such as methanol, ethanol and isopropanol, or a ketone organic solvent such as acetone, methyl ethyl ketone and methyl isobutyl ketone, either alone or as a mixed solvent, and the component concentration thereof is about 1 to Prepared as a 5% by weight organic solvent solution, applied in the same manner as in the case of the surface treatment agent, with a single-surface weight of 100 to 2,500 mg / m 2 (application amount), and dried at room temperature or hot air Thereafter, it is baked at 100 to 250 ° C. for 1 to 20 minutes.
- an alcohol organic solvent such as methanol, ethanol and isopropanol
- a ketone organic solvent such as acetone, methyl ethyl ketone and methyl isobutyl ketone
- an unsolvated rubber compound is formed on both sides with a vulcanized material layer having a thickness of about 5 to 120 ⁇ m on one side. It is applied as a solution.
- the rubber fluorine rubber, nitrile rubber or the like is preferably used.
- fluororubber either polyol vulcanizability or peroxide vulcanizability can be used.
- Polyol vulcanizable fluoro rubbers generally include vinylidene fluoride and other fluorinated olefins such as hexafluoropropene, pentafluoropropene, tetrafluoroethylene, trifluorochloroethylene, vinyl fluoride, perfluoro (methyl vinyl ether), perfluoroethylene. Examples thereof include copolymers with at least one of fluoro (ethyl vinyl ether), perfluoro (propyl vinyl ether) and the like, and copolymers of these fluorinated olefins and propylene. Polyol is vulcanized with a polyhydroxy aromatic compound such as (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxyphenyl) perfluoropropane, hydroquinone and the like.
- a polyhydroxy aromatic compound such as (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxyphenyl) perfluoropropane, hydroquinone and the like.
- peroxide vulcanizable fluororubber examples include fluororubbers having iodine and / or bromine in the molecule, and these fluororubbers are added by organic peroxides generally used for peroxide vulcanization. Sulfurized (crosslinked). In this case, it is preferable to use a polyfunctional unsaturated compound represented by triallyl isocyanurate together with the organic peroxide.
- Examples of the unvulcanized fluororubber compound include the following blending examples.
- nitrile rubber As nitrile rubber (NBR), it can be used as a compound using a sulfur vulcanizing agent such as sulfur, tetramethylthiuram monosulfide, tetramethylthiuram disulfide, etc., but preferably an organic peroxide is used as a crosslinking agent. It is used as an unvulcanized nitrile rubber compound. Examples of such peroxide-crosslinked unvulcanized nitrile rubber compounds include the following blending examples.
- a sulfur vulcanizing agent such as sulfur, tetramethylthiuram monosulfide, tetramethylthiuram disulfide, etc.
- an organic peroxide is used as a crosslinking agent.
- unvulcanized nitrile rubber compound examples include the following blending examples.
- NBR JSR product N235S
- SRF carbon black 80 ⁇ Calcium carbonate
- Triallyl isocyanurate 2 ⁇ 1,3-bis (tert-butylperoxy) isopropylbenzene 2.5 ⁇ Plasticizer (Buyer OT product from Bayer) 5 ⁇
- NBR medium-high nitrile; JSR product N237) 100 parts by weight HAF carbon black 80 ⁇ Powdered silica 60 ⁇ Zinc oxide 5 ⁇ Stearic acid 1 ⁇ Anti-aging agent (Ouchi Emerging Chemical Products ODA-NS) 1 ⁇ Organic peroxide (NIPPON OIL & PRODUCTS PERHEXA 25B) 6 ⁇ N, Nm-Phenylenedimaleimide 1 ⁇
- the applied unvulcanized rubber layer is dried at a temperature of room temperature to about 100 ° C. for about 1 to 15 minutes, and alcohols such as methanol and ethanol used as an organic solvent, and ketones such as methyl ethyl ketone and methyl isobutyl ketone After volatilizing aromatic hydrocarbons such as toluene and xylene or a mixed solvent thereof, heat vulcanize at approximately 150 to 230 ° C for approximately 0.5 to 30 minutes, and pressurize and vulcanize as necessary. It is also done.
- the vulcanized rubber layer preferably has a hardness (durometer A) of 80 or more and a compression set (100 ° C., 22 hours) of 50% or less, and satisfies the desired properties. As long as it is made, it is not particularly limited by the content of blending. Moreover, when it is necessary to prevent adhesion, an anti-adhesive agent can be applied to the surface.
- the anti-tacking agent is used for the purpose of preventing adhesion between rubbers or between rubber and metal, and any anti-tacking agent can be used as long as it can form a film on the vulcanized rubber layer.
- Fluorine-based, graphite-based, amide, paraffin-based wax-based, polyolefin-based or polybutadiene-based materials, etc. are preferable, preferably liquid 1,2-polybutadiene hydroxyl group-containing material, 1,2-polybutadiene isocyanate group-containing material and
- An anti-sticking agent comprising an organic solvent dispersion of a polyolefin resin is used (Patent Document 5).
- a vulcanized adhesive solution having the following composition was applied at a coating amount of 2000 mg / m 2 on one side using a roll coat, and baked at 200 ° C. for 5 minutes in an oven furnace.
- Resol-type phenolic resin (Gunei Chemicals cash register top PL2108) 30 parts by weight o-cresol novolac-type epoxy resin 18 ⁇ (Japan Epoxy Resin Product Epicoat 180S)
- Colloidal silica 30% methyl ethyl ketone solution 40 ⁇ (Nissan Chemical Industrial products Snowtex MEK-ST) Fluoro rubber compound (formulation example I) 40 ⁇ Hexamethylenetetramine (Ouchi Emerging Chemicals Noxeller H) 2.5 ⁇ 2-Ethyl-4-methylimidazole 1.1 Methyl ethyl ketone 1481 ⁇
- a 25 wt% methyl ethyl ketone solution of fluororubber compound (Formulation Example I) was uniformly applied using a knife coater so that the thickness was 65 ⁇ m on one side after drying. After drying the solvent at room temperature, pressure crosslinking was performed at 160 ° C. for about 30 minutes to form a rubber layer to obtain a fluororubber-metal laminated gasket material.
- a nitrile rubber compound (formulation example IV) was used as a 25 wt% methyl ethyl ketone solution, which was uniformly applied to a thickness of 25 ⁇ m on one side after drying using a knife coater, and after drying the solvent at room temperature, 180 Perform pressure crosslinking for about 5 minutes at °C to obtain a nitrile rubber-metal laminated gasket material, and evaluate the coating properties of the surface treatment agent and the adhesion of the resulting rubber-metal laminated gasket material under high temperature LLC went.
- Example 7 a metal plate subjected to coating-type chromate treatment was used as the metal plate, and a nitrile rubber-metal laminated gasket material was obtained without performing surface treatment using a surface treatment agent comprising a fluorine-free titanium compound and alumina sol. It was.
- the rubber-metal laminated gasket material according to the present invention is excellent in LLC resistance at high temperatures, it can be used effectively as an engine cylinder head gasket.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Combustion & Propulsion (AREA)
- Gasket Seals (AREA)
- Laminated Bodies (AREA)
Abstract
Description
(配合例I)
ポリオール加硫性フッ素ゴム(デュポン社製品バイトンE45) 100重量部
メタけい酸カルシウム 40 〃
MTカーボンブラック 20 〃
酸化マグネシウム(協和化学製品マグネシア#150) 6 〃
水酸化カルシウム 3 〃
加硫剤(デュポン社製品キュラティブ#30) 2 〃
加硫促進剤(同社製品キュラティブ#20) 1 〃
(配合例II)
ポリオール加硫性フッ素ゴム(デュポン社製品バイトンE60C) 100重量部
加硫剤(デュポン社製品ダイアックNo.3) 3 〃
酸化マグネシウム(協和化学製品マグネシア#30) 10 〃
MTカーボンブラック 30 〃
(配合例III)
パーオキサイド架橋性フッ素ゴム(ダイキン製品ダイエルG901)100重量部
メタけい酸カルシウム 20 〃
MTカーボンブラック 20 〃
酸化マグネシウム(マグネシア#150) 6 〃
水酸化カルシウム 3 〃
トリアリルイソシアヌレート 1.8 〃
有機過酸化物(日本油脂製品パーヘキサ25B) 0.8 〃
NBR(JSR製品N235S) 100重量部
SRFカーボンブラック 80 〃
炭酸カルシウム 80 〃
粉末状シリカ 20 〃
酸化亜鉛 5 〃
老化防止剤(大内新興化学製品ノクラック224) 2 〃
トリアリルイソシアヌレート 2 〃
1,3-ビス(第3ブチルパーオキシ)イソプロピルベンゼン 2.5 〃
可塑剤(バイエル社製品ブカノールOT) 5 〃
(配合例V)
NBR(中高ニトリル;JSR製品N237) 100重量部
HAFカーボンブラック 80 〃
粉末状シリカ 60 〃
酸化亜鉛 5 〃
ステアリン酸 1 〃
老化防止剤(大内新興化学製品ODA-NS) 1 〃
有機過酸化物(日本油脂製品パーヘキサ25B) 6 〃
N,N-m-フェニレンジマレイミド 1 〃
SUS301鋼板(厚さ0.25mm)の両面を粗面化およびアルカリ脱脂した後、後記所定の割合のフッ素非含有チタン化合物(マツモトファインケミカル製品オルガチックスTC-300;チタンラクテートアンモニウム塩、Ti含有量6.5重量%)およびアルミナゾル(日産化学工業製品アルミナゾル-200;Al2O3 10重量%、CH3COOH 3.5重量%以下)よりなる表面処理剤を所定の片面塗布量(目付量)となるように、ロールコート法によって両面に塗布し、100℃で1分間の乾燥を行った。
レゾール型フェノール樹脂(群栄化学製品レジトップPL2108) 30重量部
o-クレゾールノボラック型エポキシ樹脂 18 〃
(ジャパンエポキシレジン製品エピコート180S)
コロイダルシリカ30%メチルエチルケトン溶液 40 〃
(日産化学工業製品スノーテックスMEK-ST)
フッ素ゴムコンパウンド(前記配合例I) 40 〃
ヘキサメチレンテトラミン(大内新興化学製品ノクセラーH) 2.5 〃
2-エチル-4-メチルイミダゾール 1.1 〃
メチルエチルケトン 1481 〃
被膜塗工性:前記ロールコート法により鋼板上への表面処理剤の塗布
、乾燥を行い被膜形成に問題がみられないものを○、被
膜が脱落してしまい被膜の形成ができなかったものを×
と評価
高温LLC下における接着性:ゴム-金属積層ガスケット素材の垂直方向
下部半分を、浸漬液〔LLC(トヨタキャッ
スル製品スーパーLLC):水=体積比5:5〕
中に浸漬して150℃で100時間放置し、JIS
K6894に準拠して、浸漬液に浸漬している
下部浸漬部および浸漬液上部でLLC蒸気に
暴露されている上部暴露部(未浸漬部)に
ついて描画試験にて次のように評価
ゴムの剥がれがみられないもの:○
ゴムの剥がれが大きいもの:×
評価不能なもの:-
実施例1~5、比較例1~3において、接着剤成分中のフッ素ゴムコンパウンドの代わりに前記配合例IVのニトリルゴムコンパウンドを用い、またゴム層を形成させるゴムコンパウンドとしてフッ素ゴムコンパウンドの代わりにニトリルゴムコンパウンド(前記配合例IV)を25重量%メチルエチルケトン溶液として用い、これをナイフコータを用いて乾燥後厚みが片面25μmとなるように均一に塗布し、室温にて溶剤を乾燥させた後、180℃、約5分間の加圧架橋を行ってニトリルゴム-金属積層ガスケット素材を得、表面処理剤の被膜塗工性および得られたゴム-金属積層ガスケット素材の高温LLC下における接着性の評価を行った。
実施例1において、金属板として塗布型クロメート処理された金属板が用いられ、フッ素非含有チタン化合物およびアルミナゾルよるなる表面処理剤を用いた表面処理を行うことなくニトリルゴム-金属積層ガスケット素材を得た。
(1) 各実施例では高温下における耐LLC性にすぐれたゴム-金属積層ガスケット素材が得られた。
(2) チタン化合物が規定量以下の表面処理剤を用いた場合には被膜の形成ができなかった(比較例1、4)。
(3) 表面処理剤塗布量が規定以上用いられた場合(比較例2、5)およびアルミナを用いない場合(比較例3、6)は、浸漬部での接着性が低く、エンジンシリンダヘッドガスケットの実使用環境下での使用に耐え得るものではなかった。
Claims (6)
- 金属板上に表面処理剤層、接着剤層およびゴム層を順次積層してなるゴム-金属積層ガスケット素材において、
表面処理剤層が、クロムを含有せず、フッ素非含有チタン化合物20~90重量%およびアルミナ10~80重量%の混合割合を有し、金属チタンとしての含有量が1~20重量%である表面処理剤を、その片面塗布量が30~1000mg/m2となるように塗布せしめて形成させたものであるゴム-金属積層ガスケット素材。 - フッ素非含有チタン化合物が、乳酸チタン、乳酸チタンアンモニウム、硫酸チタン、オキシ硫酸チタン、硫酸チタンアンモニウム、硝酸チタン、オキシ硝酸チタンおよび硝酸チタンアンモニウムの少なくとも一種である請求項1記載のゴム-金属積層ガスケット素材。
- アルミナが、アルミナゾルである請求項1記載のゴム-金属積層ガスケット素材。
- ゴムがフッ素ゴムまたはニトリルゴムである請求項1記載のゴム-金属積層ガスケット素材。
- エンジンシリンダヘッドガスケットとして用いられる請求項1記載のゴム-金属積層ガスケット素材。
- 請求項5記載のゴム-金属積層ガスケット素材を用いたエンジンシリンダヘッドガスケット。
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US14/901,273 US10280869B2 (en) | 2013-06-25 | 2014-01-24 | Rubber-metal laminated gasket material |
EP14818264.5A EP3015746B1 (en) | 2013-06-25 | 2014-01-24 | Rubber-metal laminated gasket material |
KR1020167000691A KR101884695B1 (ko) | 2013-06-25 | 2014-01-24 | 고무-금속 적층 개스킷 소재 |
CN201480035827.4A CN105308368B (zh) | 2013-06-25 | 2014-01-24 | 橡胶‑金属叠层垫片材料 |
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WO2019093081A1 (ja) | 2017-11-07 | 2019-05-16 | Nok株式会社 | ガスケット素材 |
KR20210126713A (ko) | 2019-02-27 | 2021-10-20 | 에누오케 가부시키가이샤 | 수소화 nbr 조성물 |
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US11079019B2 (en) * | 2014-12-01 | 2021-08-03 | Nichias Corporation | Material for gasket |
JP6452505B2 (ja) | 2015-03-12 | 2019-01-16 | 日本リークレス工業株式会社 | 金属ガスケット素材板及びその製造方法 |
WO2020171196A1 (ja) * | 2019-02-21 | 2020-08-27 | ダイキン工業株式会社 | 塗料組成物及び塗装物品 |
JP6820369B2 (ja) * | 2019-02-27 | 2021-01-27 | ニチアス株式会社 | ガスケット用素材 |
US20230140565A1 (en) * | 2020-03-17 | 2023-05-04 | Nok Corporation | Rubber-metal laminate and gasket |
CN114106692A (zh) * | 2021-11-24 | 2022-03-01 | 长春蓝天密封技术开发有限公司 | 一种防止粘接的金属垫片表面处理剂 |
WO2024005005A1 (ja) * | 2022-06-27 | 2024-01-04 | Nok株式会社 | ゴム-金属積層ガスケット素材 |
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US20160369742A1 (en) | 2016-12-22 |
EP3015746A4 (en) | 2017-01-25 |
KR101884695B1 (ko) | 2018-08-03 |
JP5545396B1 (ja) | 2014-07-09 |
US10280869B2 (en) | 2019-05-07 |
CN105308368A (zh) | 2016-02-03 |
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