WO2017122506A1 - シリコーンゴム接合体 - Google Patents
シリコーンゴム接合体 Download PDFInfo
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- WO2017122506A1 WO2017122506A1 PCT/JP2016/087915 JP2016087915W WO2017122506A1 WO 2017122506 A1 WO2017122506 A1 WO 2017122506A1 JP 2016087915 W JP2016087915 W JP 2016087915W WO 2017122506 A1 WO2017122506 A1 WO 2017122506A1
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- WIPO (PCT)
- Prior art keywords
- silicone rubber
- film
- sulfide
- bonded
- nitride
- Prior art date
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone 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
- B32B15/04—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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber 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
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- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
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- 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
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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- 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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- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
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- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/043—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- B32B2255/00—Coating on the layer surface
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- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Definitions
- the present invention relates to a silicone rubber bonded base material and a bonded base material formed of a non-glass material having an oxide, sulfide, or nitride on the bonding side surface, by direct bonding.
- the present invention relates to a joined body.
- the first base material formed of a polymer resin and the second base material formed of a different metal, polymer resin, cross-linked rubber, glass or ceramics are greatly different in physicochemical properties. Since it does not have adhesiveness, it cannot be bonded or adhered by simply contacting it. Even when bonded using a fluid curable adhesive, the adhesive force is very weak because of intermolecular force. When the material of the base material changes, the appropriate adhesive also changes. Therefore, the selection of the optimal adhesive has to be done by trial and error, which takes a lot of labor.
- the wettability between the adhesive and both substrates is the most important factor, so the two substrates are bonded to each other via a fluid curable adhesive. This is done by curing the adhesive after contact.
- Patent Document 1 discloses that an active silyl group is bonded to a dehydrogenation residue of a hydroxy group on a nonmetallic surface with a silyl ether bond.
- a laminated substrate is disclosed in which a silicone rubber adhesive layer exposing a reactive group capable of bonding to the active silyl group is sandwiched and bonded by the bonding.
- the non-metallic base material and the metallic base material of such a laminated substrate are formed by indirectly bonding an active silyl group to both base materials through a silicone rubber adhesive layer while silyl ether bonding.
- a silicone rubber adhesive layer while silyl ether bonding.
- it is complicated and cannot be manufactured unless it passes through a number of steps.
- the heat resistance, tensile strength and peel strength are improved due to the physical properties of the silicone rubber adhesive.
- the present invention was made in order to solve the above-mentioned problems, and the silicone rubber bonding substrate and the substrate to be bonded are bonded to each other much more strongly and firmly than before, and the heat deterioration is small and the heat resistance is excellent. It is an object of the present invention to provide a silicone rubber joined body that does not peel off or tear even when pulled.
- the silicone rubber joined body of the present invention made to achieve the above object is a silicone rubber joined base material formed by including silicone rubber and an oxide, sulfide and / or nitride exposed on the joining side surface.
- the silicone rubber joined body may be one in which the silicone rubber joined base material and the non-glass joined base material are joined by a covalent bond.
- the non-glass-bonded base material has a surface oxide layer, a surface sulfide layer, and / or a surface nitride layer, or the base material includes the oxide, the sulfide, and / or Or the thing containing the said nitride may be sufficient.
- the surface oxide layer is at least one selected from a silica film, an alumina film, a titanium oxide film, a zirconium oxide film, and a zinc sulfide-silica film, and the surface sulfide layer is sulfided.
- the surface nitride layer is a silicon nitride film, an aluminum nitride film, a titanium nitride film, a zirconium nitride, And at least one selected from zinc nitride.
- the surface oxide layer, the surface sulfide layer, and / or the surface nitride layer are, for example, a deposited film, a sputtered film, an ion plating film, and / or a chemical vapor deposition film. That's it.
- the silicone rubber is, for example, a peroxide crosslinked silicone rubber, an addition crosslinked silicone rubber, a condensation crosslinked silicone rubber, an electromagnetically crosslinked silicone rubber, or a co-blend of at least one of these and an olefinic rubber. It is a thing.
- the electromagnetic wave crosslinking silicone rubber is, for example, an ultraviolet crosslinking silicone rubber including an excimer crosslinking type, or a radiation crosslinking silicone rubber including an electron beam crosslinking type, a ⁇ -ray crosslinking type, or an X-ray crosslinking type.
- the non-glass material is, for example, a metal, a polymer resin, a crosslinked rubber, or a ceramic.
- the joining side surface of the silicone rubber joined base and the joining side surface of the non-glass joined base are corona discharge treated surface, plasma treated surface, ultraviolet treated surface, and / or excimer.
- a treated surface is preferred.
- the silicone rubber joined body of the present invention has a silicone rubber joined base and an oxide layer, sulfide layer or nitride layer on the joining side surface, or contains an oxide, sulfide or nitride.
- a non-glass material base material is joined by a strong cross-linking by direct bonding, without using a fluid curable adhesive, regardless of the material or physical properties of each. .
- the reactive functional groups exposed on the respective joining side surfaces of the silicone rubber joined base and the base to be joined formed of metal, polymer resin, crosslinked rubber, ceramics, etc.
- a bonding substrate and a substrate to be bonded are bonded by forming a direct covalent bond, for example, an ether bond when the reactive functional group is a hydroxy group.
- the silicone rubber bonded body strongly bonds the silicone rubber bonded substrate and the bonded substrates such as different kinds of metals, polymer resins, cross-linked rubbers, and ceramics by direct bonding such as covalent bonding. Does not cause peeling.
- the silicone rubber joined body is joined only between the joining base material and the base material to be joined through a direct bond without depending on the fluid curable adhesive, they are bonded at the joining surface. There is no fear that the mixture of spills out or peels off at the cured layer.
- the bonded base material and the bonded base material are firmly bonded to each other regardless of whether they are flat or have a complicated three-dimensional shape.
- This silicone rubber joined body is much stronger and firmer than the adhesion by intermolecular force of a fluid curable adhesive because of the direct bonding between the silicone rubber bonded substrate and the bonded substrate. Are joined. *
- the bonded joint of silicone rubber is only a direct bond at the bonding interface, the thermal deterioration at the bonding interface is small, the heat resistance is excellent, and it does not peel off or tear even when pulled.
- This silicone rubber joined body is highly productive and can be mass-produced precisely and with simple processes.
- a silicone rubber joined body includes a silicone rubber joined base material formed by containing silicone rubber, and an oxide layer or an oxide layer on the joining side surface to expose oxide molecules or particles.
- the substrate to be bonded formed of a material, for example, a polymer resin material, is a reactive functional group on the silicone rubber bonded substrate and a reactive functional group on the exposed molecule or particle of the oxide of the oxide layer It is chemically bonded by a direct ether bond by a dehydration reaction with a hydroxy group.
- the bottom surface of the silicone rubber bonding substrate is previously subjected to surface activation treatment such as corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, or excimer treatment, and the top surface of the substrate to be joined is preliminarily corona discharge treated or plasma treated.
- surface activation treatment such as ultraviolet irradiation treatment or excimer treatment
- hydroxy groups are newly generated as reactive functional groups and exposed while being amplified on the bonding side surfaces thereof.
- the bonding-side surface of the bonding substrate and the bonding-side upper surface of the bonded substrate come into contact with each other by overlapping the two members, the hydroxy groups that are the respective reactive functional groups on both the substrates are directly dehydrated.
- the silicone rubber bonding substrate may have a planar shape or a complicated three-dimensional shape, and examples thereof include blocks, plates, sheets, films, square bars, round bars, spheres, hemispheres, fibers, nets, etc. Even in the shape, it is firmly bonded to the substrate to be joined.
- the substrate to be joined is not particularly limited as long as it is made of a non-glass material, and examples thereof include metals, polymer resins, crosslinked rubber, and ceramics in addition to polymer resin materials.
- the metal of the material of the substrate to be joined it consists of normal metal, functional metal, amorofas metal, fiber reinforced metal block, shape memory alloy, superelastic alloy, etc. Including periodic film, square bar, round bar, sphere, hemisphere, fiber, net, net wire cloth, film, sheet and their complex circuit shapes, stamped and cut molded products, beryllium, magnesium, calcium on the periodic table , Strontium, barium, radium, scandium, yttrium, titanium, zirconium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, iron, cobalt, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, zinc , Cadmium, mercury, aluminum, germanium, tin, lead, antimony, It is either Sumus or Neodymium.
- the alloy composition is iron alloy (steel (steel), carbon steel, cast iron), copper alloy (phosphor bronze, brass, cupronickel, beryllium copper, titanium copper), aluminum alloy (copper, Manganese, silicon, magnesium, zinc, nickel alloy, etc.), magnesium alloy (Mg / Zn alloy, Mg / Ca alloy, etc.), zinc alloy, tin and tin alloy, nickel alloy, gold alloy, silver alloy, platinum alloy, palladium alloy , Lead alloy, titanium alloy ( ⁇ type, ⁇ type and ⁇ + ⁇ type alloy), cadmium, zirconium alloy, cobalt alloy, chromium alloy, molybdenum alloy, tungsten alloy, manganese alloy, ferritic stainless steel, martensitic stainless steel, austenitic stainless steel , Precipitation strengthened stainless steel, nickel-titanium alloy, iron-manganese-titanium alloy And a material such as a superelastic alloy (nickel-titanium alloy).
- VMQ vinylmethylsilicone
- PVMQ methylphenylsilicone
- FVMQ fluoromethyl Silicone
- the cross-linked rubber of the material of the substrate to be joined natural rubber, 1,4-cis butadiene rubber, isoprene rubber, polychloroprene, styrene / butadiene copolymer rubber, hydrogenated styrene / butadiene copolymer rubber, acrylonitrile / butadiene copolymer Rubber, hydrogenated acrylonitrile-butadiene copolymer rubber, polybutene rubber, polyisobutylene rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, ethylene oxide-epichlorohydrin copolymer rubber, chlorinated polyethylene rubber, chlorosulfonated polyethylene Rubber, alkylated chlorosulfonated polyethylene rubber, chloroprene rubber, chlorinated acrylic rubber, brominated acrylic rubber, fluoro rubber, epichlorohydrin and its copolymer rubber, chlorinated ethylene propylene rubber, salt Homopolylene
- Ceramics used as the material of the substrate to be joined are ceramics, glass, cement, gypsum, enamel and the like, which are hardened at a high temperature. Elemental (diamond, C), oxide (alumina, Al 2 O 3) ), Zirconia, hydroxide (hydroxyapatite), carbide (silicon carbide, SiC), carbonate, nitride (silicon nitride) (7 halide (fluorite), phosphate (apatite) Specifically, barium titanate, Bi 2 Sr 2 Ca 2 Cu 3 O 10 , high-temperature superconducting ceramics, boron nitride, ferrite, lead zirconate titanate, silicon carbide, silicon nitride, steatite (MgOSiO 2 ), YBa 2 Cu 3 O 7 - ⁇ , HTS ceramics, zinc oxide, aluminum nitride (AlN), silicon carbide (SiC) Nitride, silicon (Si 3 N 4),
- the substrate to be bonded contains oxides, sulfides, and nitrides that are metal oxides or metalloid oxides in the material, so that molecules or particles of these oxides, sulfides, and nitrides are bonded on the bonding side. It may be exposed on the surface.
- the substrate to be bonded includes an oxide layer such as a metal oxide layer, a semimetal oxide layer, and a metal oxide / semimetal oxide mixture layer on the substrate surface in the substrate to be bonded; a metal Sulfide layers such as sulfide layers, metalloid sulfide layers, and metal sulfide / metalloid sulfide mixture layers; metal nitride layers, metalloid nitride layers, and metal nitride / metalloid nitride mixture layers
- a nitride layer such as a metal-containing layer such as a metal oxide, a metalloid oxide, a metal sulfide, a metalloid sulfide, a metal nitride, or a mixture of at least two metalloid nitrides.
- Such an oxide layer examples include metal oxide alumina, titania, and zirconia, and examples of a semimetal oxide include silica. It may be an oxide layer made of a mixture of Al 2 O 3 and SiO 2 and ZnS and SiO 2 . These metals and / or metalloids may be of the same kind or plural kinds.
- Silicone rubber joined bodies contain oxides, sulfides, and nitrides in the base materials themselves, or surface oxide layers, surface sulfide layers, and surface nitride layers on the substrates in the base materials to be joined. If the oxide, sulfide, or nitride is exposed due to the attachment, the corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, or excimer treatment is more effective than the case where there is no oxide, sulfide, or nitride. By performing such surface activation treatment, it is possible to easily generate and amplify a hydroxy group as a reactive functional group on the bonding side surface, so that productivity is high, even in a simple process. Precise mass production is possible.
- the oxide, sulfide, or nitride is selected from silver, copper, iron, cobalt, silicone, lead, manganese, tungsten, tantalum, and platinum.
- Metal oxides, sulfides and nitrides such as cadmium, tin, palladium, nickel, chromium, indium, titanium, zinc, calcium, barium, aluminum, magnesium, sodium, potassium; metalloid oxides such as silicon Or a mixture of the metal nitride or metalloid nitride with the same or different metal oxide or metalloid oxide; the same as the metal sulfide or metalloid sulfide or Mention may be made of oxides or metalloids of different metals.
- the substrate to be bonded has a surface oxide layer, and SiO 2 (silica) vapor deposition, Al 2 O 3 (alumina) vapor deposition, ZrO 2 vapor deposition, or ZnS—SiO 2 vapor deposition was performed to reduce gas permeability.
- SiO 2 (silica) vapor deposition, Al 2 O 3 (alumina) vapor deposition, ZrO 2 vapor deposition, or ZnS—SiO 2 vapor deposition was performed to reduce gas permeability.
- a commercially available non-glass material is mentioned. More specifically, those obtained by depositing silica or alumina on a metal, polymer resin, cross-linked rubber, or ceramic substrate may be used.
- a tech barrier such as a tech barrier VX (base film is a PET film) in which a silica vapor deposition film is formed on a polyethylene terephthalate (PET) film or a polyamide film as a base film
- Tech barrier AX base film is PET film
- IB film trade name, manufactured by Dai Nippon Printing Co., Ltd.
- Silica vapor deposition film CVD
- ceramic silica vapor deposition film
- a CVD method Chemical Vapor Deposition
- a PE-CVD method Plasma CVD
- a source gas containing a target thin film component is supplied onto a substrate material heated in a reaction tube made of quartz or the like, and a film is deposited by a chemical reaction on the substrate surface or in a gas phase.
- Thermal CVD a method using thermal decomposition reaction or chemical reaction
- a method using plasma CVD plasma CVD
- the substrate to be bonded may be a PVD method (Physical Vapor Deposition) when a surface oxide layer, a surface sulfide layer, or a surface nitride layer is deposited by another method.
- PVD method Physical Vapor Deposition
- a thin film of a target substance is deposited on the surface of the substance in a gas phase by a physical method.
- Specific examples include resistance heating vapor deposition, electron beam vapor deposition, and sputtering.
- the surface oxide layer, the surface sulfide layer, and the surface nitride layer are vapor deposited films, the metal oxide layers, sulfide layers, nitride layers, metalloid oxide layers, sulfide layers, and nitrides described above.
- the layer may be a sputtered film, an ion plating film, or a chemical vapor deposition film.
- the silicone rubber bonding substrate is formed in advance with a material containing silicone rubber.
- the silicone rubber bonding base material is, for example, a three-dimensional silicone rubber elastic base material, specifically, a peroxide cross-linking silicone rubber, an addition cross-linking silicone rubber, a condensation cross-linking silicone rubber, an ultraviolet cross-linking silicone rubber, Three-dimensional silicone rubber elasticity produced by putting a silicone rubber exemplified by electron beam-crosslinking silicone rubber, and a co-blend of these silicone rubber and olefin rubber into a molding die, etc. Is the body.
- the peroxide-crosslinked silicone rubber used as the material for the silicone rubber bonding substrate is not particularly limited as long as it is synthesized using a silicone raw material compound that can be crosslinked with a peroxide-based crosslinking agent.
- Molecular weight: 500,000 to 900,000 vinylmethylsiloxane / polydimethylsiloxane copolymer (molecular weight: 500,000 to 900,000), vinyl-terminated polydimethylsiloxane (molecular weight: 10,000 to 200,000), vinyl-terminated diphenylsiloxane / polydimethyl Siloxane copolymer (molecular weight: 10,000 to 100,000), vinyl-terminated diethylsiloxane / polydimethylsiloxane copolymer (molecular weight: 10,000 to 50,000), vinyl-terminated trifluoropropylmethylsiloxane / polydimethylsiloxane copolymer (molecular weight: 10,000 to 10) 10,000), vinyl powder Polyphen
- peroxide-based crosslinking agents examples include ketone peroxides, diacyl peroxides, hydroperoxides, dialkyl peroxides, peroxyketals, alkyl peresters, and carbonates. , Ketone peroxide, peroxy ketal, hydroperoxide, dialkyl peroxide, peroxy carbonate, peroxy ester, benzoyl peroxide, dicumyl peroxide, dibenzoyl peroxide, t-butyl hydroperoxide, di t-butyl hydroper Oxide, di (dicyclobenzoyl) peroxide, 2,5-dimethyl-2,5bis (t-butylperoxy) hexane, 2,5-dimethyl-2,5bis (t-butylperoxy) hexyne Benzophenone, Mihiraaketon, dimethylaminobenzoic acid ethyl ester, benzoin ethyl ether.
- the amount of the peroxide-based crosslinking agent used is appropriately selected according to the type of silicone rubber to be obtained and the properties and performances of the materials to be bonded to the silicone rubber bonded substrate molded with the silicone rubber. However, 0.01 to 10 parts, preferably 0.1 to 2 parts are preferably used with respect to 100 parts of silicone rubber. If it is less than this range, the crosslinking degree is too low to be used as silicone rubber. On the other hand, if the amount is larger than this range, the degree of crosslinking is too high and the elasticity of the silicone rubber is reduced.
- Addition-type silicone rubber which is a material of the silicone rubber bonding base material, is vinylmethylsiloxane / polydimethylsiloxane copolymer (molecular weight: 500,000 to 900,000) synthesized in the presence of Pt catalyst, vinyl-terminated polydimethylsiloxane (molecular weight: 10,000 to 200,000), vinyl-terminated diphenylsiloxane / polydimethylsiloxane copolymer (molecular weight: 10,000 to 100,000), vinyl-terminated diethylsiloxane / polydimethylsiloxane copolymer (molecular weight: 10,000 to 50,000), vinyl-terminated trifluoropropylmethylsiloxane / Polydimethylsiloxane copolymer (molecular weight: 10,000 to 100,000), vinyl-terminated polyphenylmethylsiloxane (molecular weight: 10,000 to 10,000), vinylmethylsiloxane / dimethylsiloxane copoly
- the processing conditions for preparing the addition-type silicone rubber from these compositions differ depending on the type and characteristics of the addition reaction, and therefore cannot be uniquely determined. However, in general, heating is performed at 0 to 200 ° C. for 1 minute to 24 hours. Is. Thereby, addition-type silicone rubber is obtained as a silicone rubber bonding substrate. When the physical properties of the silicone rubber are better under low temperature processing conditions, the reaction time becomes longer. When productivity faster than physical properties is required, the processing is performed at a high temperature for a short time. When machining must be performed within a certain period of time depending on the production process and work environment, the machining temperature is set to a relatively high temperature within the above range in accordance with the desired machining time.
- Condensation-type silicone rubber which is a material for bonding silicone rubber, is made of silanol-terminated polydimethylsiloxane (molecular weight: 50,000 to 200,000), silanol-terminated polydiphenylsiloxane synthesized in the presence of tin-based or zinc-based catalysts.
- a composition of a single condensation component comprising silanol-terminated polysiloxanes such as silanol-terminated polytrifluoromethylsiloxane, silanol-terminated diphenylsiloxane / dimethylsiloxane copolymer; these silanol-terminated polysiloxanes, tetraacetoxysilane, triacetoxymethyl Silane, di-t-butoxydiacetoxysilane, vinyltriacetoxysilane, tetraethoxysilane, trienoxymethylsilane, bis (triethoxysilyl) ethane, tetra-n-propoxysilane, vinyl trime Xysilane, methyltris (methylethylketoxime) silane, vinyltris (methylethylketoxyimino) silane, vinyltriisopropenooxysilane, triacetoxymethylsilane, tri (ethylmethyl)
- the processing conditions for preparing the silicone rubber-bonded substrate from these compositions vary depending on the type and characteristics of the condensation reaction, and therefore cannot be uniquely determined, but are generally heated at 0 to 200 ° C. for 10 minutes to 24 hours. That's it. Thereby, a condensation type silicone rubber is obtained as a silicone rubber bonding substrate.
- the reaction time becomes longer.
- productivity faster than physical properties is required, the processing is performed at a high temperature for a short time.
- the machining temperature is set to a relatively high temperature within the above range in accordance with the desired machining time.
- the olefinic rubber used in the co-blend of silicone rubber and olefinic rubber as the base material for silicone rubber bonding is 1,4-cisbutadiene rubber, isoprene rubber, styrene-butadiene copolymer rubber, polybutene rubber, polyisobutylene.
- examples thereof include rubber, ethylene / propylene rubber, ethylene-propylene-diene rubber, chlorinated ethylene propylene rubber, and chlorinated butyl rubber.
- Silicone rubber bonding base material functions to enhance functions such as reinforcement, conductivity, thermal conductivity, wear resistance, ultraviolet resistance, radiation resistance, heat resistance, weather resistance, flexibility, antibacterial properties as an elastic body
- a functional filler may be added in order to add a functional additive or increase the amount.
- the silicone rubber joined body is subjected to surface activation treatment such as corona discharge treatment, plasma treatment, ultraviolet irradiation treatment or excimer treatment on the joining surface of the silicone rubber joining substrate and the joining surface of the non-glass-bonded substrate.
- surface activation treatment such as corona discharge treatment, plasma treatment, ultraviolet irradiation treatment or excimer treatment on the joining surface of the silicone rubber joining substrate and the joining surface of the non-glass-bonded substrate.
- a hydroxy group is newly generated as a reactive functional group and exposed while being amplified on the bonding side surface thereof.
- the bonding side surface of the bonding substrate and the bonding side surface of the bonded substrate are brought into contact with each other by overlapping the two members, and when pressure is applied by applying temperature and pressure with a press, the respective reactive functional groups on both substrates It is produced by forming a direct ether bond between certain hydroxy groups by dehydration and chemically bonding both base materials.
- Silicone rubber bonded body is a contact switch in which a switch key-shaped silicone rubber bonded substrate and a non-glass bonded substrate are bonded as a base sheet, or a press in which a silicone rubber bonded substrate and a non-glass bonded substrate are bonded in a sheet shape. Used as a cushion during processing.
- the silicone rubber bonded body strongly bonds the silicone rubber bonded substrate and the bonded substrate, so that a hydroxyl group that is a reactive functional group at a sufficient concentration is generated on the bonding side surface of both substrates, It is necessary to amplify the concentration of the reactive group with the other hydroxy group by utilizing the slightly generated hydroxy group.
- a functional group that reacts with both organic group-bonding hydroxy groups may be introduced.
- a highly reactive reactive group such as a hydroxy group is formed on the organic or inorganic material on the bonding side surface.
- the bonding surface has dotted hydroxy groups that are generated and scattered by exposing the original hydroxy groups and newly formed hydroxy groups.
- the bonding-side surface has a hydroxy group exposed by interspersed with the original hydroxy group and the newly formed hydroxy group.
- the bonding surfaces were subjected to surface activation treatment such as corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, and excimer treatment, and stacked at normal pressure. Thereafter, it may be covalently bonded under normal pressure, but may be covalently bonded under reduced pressure or under pressure.
- surface activation treatment such as corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, and excimer treatment
- it may be covalently bonded under normal pressure, but may be covalently bonded under reduced pressure or under pressure.
- the proximity of reactive groups such as hydroxy groups between the two substrates is reduced or reduced under vacuum, for example, 50 torr or less, more specifically, reduced pressure of 50 to 10 torr, or less than 10 torr, more specifically 10 torr.
- Examples of the treatment applied to the bonding side surface of the silicone rubber bonding substrate and the bonded substrate include a corona discharge treatment.
- a corona discharge treatment for example, using an atmospheric pressure corona surface reformer (manufactured by Shinko Electric Measurement Co., Ltd., product name: Corona Master), for example, power supply: AC 100 V, output voltage: 0 to 20 kV, oscillation frequency: 0 to It is carried out at 40 kHz for 0.1 to 60 seconds and at a temperature of 0 to 60 ° C.
- Such a corona discharge treatment may be performed in a state of being wet with water, alcohols, acetones, esters, or the like.
- the treatment applied to activate the bonding side surface of the silicone rubber bonding substrate and the bonded substrate is an atmospheric pressure plasma treatment and / or an ultraviolet irradiation treatment (a general UV treatment such as generating ozone by UV irradiation). Or excimer UV treatment).
- the atmospheric pressure plasma treatment for example, using an atmospheric pressure plasma generator (manufactured by Panasonic Corporation, product name: Aiplasma), for example, a plasma treatment speed of 10 to 100 mm / s, a power source: 200 or 220 V AC (30 A), Compressed air: 0.5 MPa (1 NL / min), 10 kHz / 300 W to 5 GHz, power: 100 W to 400 W, irradiation time: 0.1 to 60 seconds.
- an atmospheric pressure plasma generator manufactured by Panasonic Corporation, product name: Aiplasma
- a plasma treatment speed 10 to 100 mm / s
- a power source 200 or 220 V AC (30 A)
- Compressed air 0.5 MPa (1 NL / min)
- 10 kHz / 300 W to 5 GHz power: 100 W to 400 W
- irradiation time 0.1 to 60 seconds.
- the ultraviolet irradiation treatment is performed using an excimer lamp light source (manufactured by Hamamatsu Photonics Co., Ltd., product name: L11751-01), for example, with an integrated light amount of 50 to 1500 mJ / cm 2 .
- an excimer lamp light source manufactured by Hamamatsu Photonics Co., Ltd., product name: L11751-01
- the bonded sample of the silicone rubber bonded body of the example to which the present invention is applied and the adhesive sample of the bonded silicone rubber bonded body of the comparative example to which the present invention is not applied were prepared as follows, and the physical properties were evaluated.
- Example 1 Two rolls of 100 parts by mass of KE961U (manufactured by Shin-Etsu Chemical Co., Ltd .; trade name) as the base polymer and 0.5 parts by mass of C-8A (manufactured by Shin-Etsu Chemical Co., Ltd .; trade name) as the vulcanizing agent After kneading at 170 ° C. for 10 minutes and press vulcanizing at 200 ° C., secondary vulcanization was performed at 200 ° C. for 4 hours to produce a rubber sheet having a thickness of 2 mm as a silicone rubber bonding substrate formed by including silicone rubber. . It was cut into 60 mm ⁇ 15 mm.
- a corona master (manufactured by Shinko Electric Measurement Co., Ltd .; trade name), which is a corona discharge treatment device, is used on the joining surface side of the obtained rubber sheet, voltage setting is 15 kV, corona treatment gap length is 0.5 mm, and corona speed is 100 mm / second.
- the corona discharge treatment was performed under the condition of 3 treatments, and the surface on the joint surface side was modified.
- a corona master is used on the silica vapor deposition surface, which is the bonded surface side of the silica vapor deposition PET film, and a corona discharge treatment is performed under the conditions of a voltage setting of 15 kV, a corona treatment gap length of 0.5 mm, a corona speed of 30 mm / second, and a treatment frequency of 5 times. Then, the surface on the joint surface side was modified. The surface modified surfaces of the rubber sheet bonding surface side and the silica vapor deposited PET film bonding surface side (silica vapor deposition surface side) are bonded to each other, and bonded at 80 ° C. for 120 seconds with an air setting pressure of 0.1 MPa. Four test samples of Example 1 were produced.
- Adhesion evaluation test Adhesive strength after boiling
- the test samples obtained in Example 1 and Comparative Examples 1 and 2 were boiled at 98 ° C. for 15 hours using tap water, and the adhesive strength was measured in the same manner as described above. The results are shown in Table 1.
- Example 1 Adhesive strength after humidity resistance test
- Example 2 Adhesive strength after humidity resistance test
- the test samples obtained in Example 1 and Comparative Examples 1 and 2 were allowed to stand at 85 ° C. and 85% RH for 192 hours, and then the adhesive strength was measured in the same manner as described above. The results are shown in Table 1.
- the silicone rubber joined body of the present invention has high adhesive strength, it should not be peeled off from industrial products and daily necessities such as hoses, packing, oil seals and adhesives with metals, diaphragms, gaskets, large rubber rolls, and copying machines. It is useful as a product in many fields such as rubber rolls, conveyor belts, reinforcing belts, medical rubber products, rubber products for electric and electronic parts, rubber products for construction, computer products, automobile products, bus / truck products, airplane products and the like.
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Abstract
Description
ベースポリマーとしてKE961U(信越化学工業株式会社製;商品名)の100質量部と、加硫剤としてC-8A(信越化学工業株式会社製;商品名)0.5質量部とを、二本ロールで混練し、170℃で10分間プレス加硫した後、200℃で4時間二次加硫し、シリコーンゴムを含んで形成されたシリコーンゴム接合基材として、厚さ2mmのゴムシートを作製した。それを60mm×15mmにカットした。
実施例1のシリカ蒸着PETフィルムに代えて、シリカ蒸着していないPETフィルムであるルミラーS10(t=100μm)(東レ株式会社製;商品名)を用いたこと以外は、実施例1と同様にして、1ショット当たり4枚の比較例1の試験サンプルを作製した。
実施例1のシリカ蒸着PETフィルムに代えて、ルミラーS10(t=100μm)(東レ株式会社製;商品名)を用いたことと、圧着に際し表面改質したPETフィルムにシリコーン系接着剤SE9186L RTV(東レダウコーニング株式会社製;商品名)を塗布し、両シートを貼り合わせて圧着したこと以外は、実施例1と同様にして、1ショット当たり4枚の比較例2の試験サンプルを作製した。
実施例1及び比較例1~2で得られた試験サンプルに対し、接着評価測定器としてデジタルフォースゲージZP-200N(IMADA社製;商品名)を用い、引張速度100mm/分、剥離角度180°で、接着評価試験を行った。その試験の結果、ゴム破断で100%ゴム被覆率のものを○、部分剥離で20~50%ゴム被覆率のものを△、完全剥離のものを×とする3段階で評価した。その結果を、表1に示す。
実施例1及び比較例1~2で得られた試験サンプルに対し、水道水を用いて、98℃で15時間、煮沸処理した後、前記と同様に、接着強度を測定した。その結果を、表1に示す。
実施例1及び比較例1~2で得られた試験サンプルに対し、85℃、85%RHで192時間、静置した後、前記と同様に、接着強度を測定した。その結果を、表1に示す。
Claims (8)
- シリコーンゴムを含んで形成されたシリコーンゴム接合基材と、接合側表面に酸化物、硫化物及び/又は窒化物を露出させており非ガラス素材で形成された被接合基材とが、前記シリコーンゴム接合基材の表面の反応性官能基と前記酸化物、前記硫化物及び/又は前記窒化物の表面の反応性官能基との直接的な結合によって、接合されていることを特徴とするシリコーンゴム接合体。
- 前記シリコーンゴム接合基材と、前記非ガラス被接合基材とが、共有結合によって、前記結合をしていることを特徴とする請求項1に記載のシリコーンゴム接合体。
- 前記非ガラス被接合基材が、表面酸化物層、表面硫化物層及び/又は表面窒化物層を有し、若しくは基材素材に前記酸化物、前記硫化物及び/又は前記窒化物を含有するものであることを特徴とする請求項1に記載のシリコーンゴム接合体。
- 前記表面酸化物層が、シリカ膜、アルミナ膜、酸化チタン膜、酸化ジルコニウム膜、及び硫化亜鉛-シリカ膜から選ばれる少なくとも何れかであり、前記表面硫化物層が硫化ケイ素膜、硫化アルミニウム膜、硫化チタン膜、硫化ジルコニウム膜、及び硫化亜鉛膜から選ばれる少なくとも何れかであり、前記表面窒化物層が、窒化ケイ素膜、窒化アルミニウム膜、窒化チタン膜、窒化ジルコニウム、及び窒化亜鉛から選ばれる少なくとも何れかであることを特徴とする請求項3に記載のシリコーンゴム接合体。
- 前記表面酸化物層、前記表面硫化物層及び/又は前記表面窒化物層が、蒸着膜、スパッター膜、イオンプレティング膜、及び/又は化学気相沈積膜であることを特徴とする請求項3に記載のシリコーンゴム接合体。
- 前記シリコーンゴムが、パーオキサイド架橋型シリコーンゴム、付加架橋型シリコーンゴム、縮合架橋型シリコーンゴム、電磁波架橋型シリコーンゴム、これらの少なくとも何れかとオレフィン系ゴムとの共ブレンド物であることを特徴とする請求項1に記載のシリコーンゴム接合体。
- 前記非ガラス素材が、金属、高分子樹脂、架橋ゴム、セラミックスであることを特徴とする請求項1に記載のシリコーンゴム接合体。
- 前記シリコーンゴム接合基材の接合側表面と、前記非ガラス被接合基材の接合側表面とが、コロナ放電処理表面、プラズマ処理表面、紫外線処理表面、及び/又はエキシマ処理表面であることを特徴とする請求項1に記載のシリコーンゴム接合体。
Priority Applications (5)
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US16/067,846 US20190022986A1 (en) | 2016-01-12 | 2016-12-20 | Bonded silicone rubber object |
EP16885108.7A EP3403822B1 (en) | 2016-01-12 | 2016-12-20 | Bonded silicone rubber object |
JP2017561561A JP6828900B2 (ja) | 2016-01-12 | 2016-12-20 | シリコーンゴム接合体 |
CN201680078326.3A CN108541234B (zh) | 2016-01-12 | 2016-12-20 | 硅橡胶接合体 |
HK19100574.3A HK1258216A1 (zh) | 2016-01-12 | 2019-01-14 | 矽橡膠接合體 |
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EP (1) | EP3403822B1 (ja) |
JP (1) | JP6828900B2 (ja) |
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JP2019108497A (ja) * | 2017-12-19 | 2019-07-04 | 日本ゼオン株式会社 | 熱伝導シートの製造方法 |
WO2021065739A1 (ja) * | 2019-09-30 | 2021-04-08 | 株式会社朝日ラバー | アミノ変性界面改質層を有する摺動性ゴム材、及びそれを製造する方法 |
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EP3708881B1 (en) * | 2017-11-07 | 2023-05-03 | Nok Corporation | Gasket material |
KR102235987B1 (ko) * | 2018-06-05 | 2021-04-02 | 주식회사 엘지화학 | 신축성 점착 필름 및 이를 포함하는 디스플레이 장치 |
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- 2016-12-20 US US16/067,846 patent/US20190022986A1/en not_active Abandoned
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JP2007069412A (ja) * | 2005-09-06 | 2007-03-22 | Toppan Printing Co Ltd | 印刷用ブランケット |
JP2008156592A (ja) * | 2006-11-28 | 2008-07-10 | Asahi Rubber:Kk | 接着用基材及びそれを用いたシリコーンゴム接着体 |
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WO2021065739A1 (ja) * | 2019-09-30 | 2021-04-08 | 株式会社朝日ラバー | アミノ変性界面改質層を有する摺動性ゴム材、及びそれを製造する方法 |
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JP7018619B2 (ja) | 2019-09-30 | 2022-02-14 | 株式会社朝日ラバー | アミノ変性界面改質層を有する摺動性ゴム材、及びそれを製造する方法 |
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CN108541234B (zh) | 2020-07-31 |
HK1258216A1 (zh) | 2019-11-08 |
CN108541234A (zh) | 2018-09-14 |
EP3403822A1 (en) | 2018-11-21 |
EP3403822B1 (en) | 2020-08-26 |
JP6828900B2 (ja) | 2021-02-10 |
US20190022986A1 (en) | 2019-01-24 |
JPWO2017122506A1 (ja) | 2018-11-01 |
EP3403822A4 (en) | 2019-07-03 |
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