WO2020171194A1 - 塗料組成物及び塗装物品 - Google Patents
塗料組成物及び塗装物品 Download PDFInfo
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- WO2020171194A1 WO2020171194A1 PCT/JP2020/006982 JP2020006982W WO2020171194A1 WO 2020171194 A1 WO2020171194 A1 WO 2020171194A1 JP 2020006982 W JP2020006982 W JP 2020006982W WO 2020171194 A1 WO2020171194 A1 WO 2020171194A1
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- coating composition
- curing agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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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
-
- 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
- B32B15/08—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 synthetic resin
- B32B15/092—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 synthetic resin comprising epoxy resins
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/04—Epoxynovolacs
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
Definitions
- the present disclosure relates to coating compositions and coated articles.
- Patent Document 1 describes an undercoat coating composition for an elastomer containing an epoxy resin and an amine curing agent.
- the present disclosure aims to provide a coating composition that gives a coating film having excellent adhesion to a metal substrate and an upper layer and hot water resistance, and a coated article provided with such a coating film.
- the present disclosure relates to a coating composition including an epoxy resin, a curing agent, an organic silane compound, and an organic solvent.
- the epoxy resin is preferably a cresol novolac type epoxy resin.
- the curing agent is preferably an amine curing agent.
- the curing agent is preferably an aromatic amine curing agent.
- the organosilane compound is preferably a silane coupling agent.
- the organic silane compound is preferably a silane coupling agent having an amino group.
- the organosilane compound is also preferably a silane coupling agent having an epoxy group.
- the coating composition is preferably an undercoat coating composition for elastomer.
- the coating composition is preferably an undercoat coating composition for fluororubber.
- the present disclosure is characterized by having a metal plate, a coating film formed from the coating composition provided on one surface or both surfaces of the metal plate, and an elastomer layer provided on the coating film. It also relates to coated articles.
- the elastomer layer is preferably a fluororubber layer.
- the coated article is preferably a fluororubber coated gasket material.
- a coating composition that gives a coating film having excellent adhesion to a metal substrate and an upper layer and hot water resistance, and a coated article provided with such a coating film.
- the present disclosure relates to a coating composition including an epoxy resin, a curing agent, an organic silane compound and an organic solvent. Since the coating composition of the present disclosure contains the above components, it is necessary to provide a coating film having excellent adhesion to a metal substrate and an upper layer (a layer provided on the coating film of the coating composition of the present disclosure) and hot water resistance. You can The coating composition of the present disclosure can also provide a coating film excellent in heat resistance (adhesion at high temperature) and antifreeze resistance.
- the epoxy resin is not particularly limited as long as it is a resin having at least one epoxy group in the molecule or a resin in which at least one of the epoxy groups is modified (modified epoxy resin).
- the epoxy resin include various epoxy resins such as bisphenol A type, bisphenol F type, alcohol ether type, cresol novolac type, phenol novolac type, modified novolac type, and glycidyl amine type.
- the epoxy resin all types of commercially available epoxy resins can be used.
- the epoxy resin in the present disclosure is preferably a cresol novolac type epoxy resin from the viewpoint of heat resistance.
- an epoxy resin curing agent such as an amine curing agent, an acid anhydride curing agent, a phenol resin curing agent, a polyamide resin curing agent, an imidazole curing agent, or a mercaptan curing agent is used. be able to.
- amine-based curing agents are preferable in that a coating film having more excellent adhesion, hot water resistance and antifreeze resistance can be obtained.
- the amine-based curing agent is not particularly limited and may be any of monoamine, diamine and triamine, but monoamine or diamine is preferable, and diamine is more preferable in terms of curability.
- the amine-based curing agent is preferably an aromatic amine in terms of heat resistance and pot life.
- the aromatic amine may be any of primary amine, secondary amine, and tertiary amine, but primary amine is preferable from the viewpoint of curing reactivity, and among them, aromatic diamine. Is more preferable.
- aromatic diamine examples include metaphenylenediamine [MPDA], methylenedianiline [DDM], diaminodiphenylsulfone [DDS], 4-chloro-o-phenylenediamine [MOCA], among which DDS is preferable.
- the amine-based curing agent may be used alone or in a mixture of two or more.
- the compounding amount of the curing agent is preferably 0.5 to 1.5 equivalents (H + g/eq) with respect to 1 equivalent (g/eq) of the epoxy resin.
- a more preferable lower limit is 0.8 equivalent (H + g/eq)
- a more preferable upper limit is 1.2 equivalent (for 1 equivalent (g/eq) of the epoxy resin. H + g/eq).
- the organosilane compound is preferably a silane coupling agent.
- the silane coupling agent has a functional group.
- the functional group include an amino group, an epoxy group, a mercapto group, a vinyl group and a (meth)acrylic group.
- an amino group and an epoxy group are preferable from the viewpoint that a coating film having further excellent adhesion and hot water resistance can be obtained.
- the above-mentioned silane coupling agent having a functional group also includes a silane coupling agent in which the functional group is protected.
- a silane coupling agent having a protected amino group shall be classified as a silane coupling agent having an amino group.
- the organosilane compound it is preferable to use at least one of a silane coupling agent having an amino group and a silane coupling agent having an epoxy group, in that a coating film having more excellent adhesion and hot water resistance can be obtained. It is more preferable to use a silane coupling agent having an amino group, and it is further preferable to use a silane coupling agent having an amino group and a silane coupling agent having an epoxy group in combination. It is also preferable to use a silane coupling agent having an epoxy group as the organic silane compound.
- the silane coupling agent having an amino group is preferably one having a protected amino group.
- the pot life of the coating composition is improved and it becomes possible to use it as a one-pack type coating composition.
- Examples of the silane coupling agent having a protected amino group include those having a ketimine structure and those having an aldimine structure, and those having a ketimine structure are preferable.
- silane coupling agent having an amino group examples include N-2-(aminoethyl)-3-aminopropylmethyldimethoxysilane, N-2-(aminoethyl)-3-aminopropylmethyltrimethoxysilane, and 3-amino.
- examples thereof include propyltrimethoxysilane, 3-aminopropylethoxysilane, 3-triethoxysilyl-N-(1,3-dimethylbutylidene)propylamine, N-phenyl-3-aminopropyltrimethoxysilane and the like.
- silane coupling agent having an epoxy group examples include 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and 3-glycidyl. Examples thereof include cydoxypropylmethyldiethoxysilane and 3-glycidoxypropylmethyltriethoxysilane.
- the amount of the organic silane compound compounded is preferably 70 to 120 parts by mass, and more preferably 85 to 105 parts by mass, relative to 100 parts by mass of the epoxy resin.
- the mass ratio of the two is 7 It is preferably 1/1 to 1/1, and more preferably 3.5/1 to 1.5/1.
- the coating composition of the present disclosure contains an organic solvent.
- the coating composition of the present disclosure may be a solvent-based coating.
- the organic solvent is not particularly limited, and examples thereof include ketones such as methyl ethyl ketone [MEK] and methyl isobutyl ketone [MIBK], esters such as butyl acetate and isopentyl acetate, ethers such as diethylene glycol dimethyl ether, toluene and xylene. Amides such as hydrocarbons, N,N-dimethylacetamide and N-methyl-2-pyrrolidone can be used.
- the coating composition of the present disclosure may use only one type of the above organic solvent, or may use two or more types of organic solvents. The blending amount of the organic solvent can be appropriately adjusted according to the types of the epoxy resin, the amine curing agent, and the organic silane compound blended in the coating composition.
- the coating composition of the present disclosure may contain a curing catalyst and the like, if necessary, in addition to the above-mentioned epoxy resin, amine-based curing agent, and organic silane-based compound.
- the coating composition of the present disclosure may contain a stabilizer in addition to the epoxy resin, amine curing agent, and organic silane compound described above.
- the stabilizer include orthoformate ester, orthocarbonate ester, cyclic orthoester, lactone acetal, trimethyl orthoformate ester, triethyl orthoformate ester, trimethyl orthoacetate ester, triethyl orthoacetate ester, trimethyl orthocarbonate ester, and triethyl orthocarbonate ester.
- Orthoesters such as orthocarbonic acid tetramethyl ester and orthocarbonic acid tetraethyl ester can be used.
- the coating composition of the present disclosure may use only one of the above stabilizers, or may use two or more types of stabilizers.
- various additives such as a filler, a colorant, a defoaming agent, and a surface conditioner can be added to the coating composition of the present disclosure.
- the filler include carbon black, molybdenum disulfide, white carbon, calcium carbonate, barium sulfate, talc, calcium silicate, and an elastomer used for top coating.
- the colorant include inorganic pigments and complex oxide pigments.
- Examples of the above defoaming agent include a silicone defoaming agent and a polymer defoaming agent.
- the surface modifier include siloxane compounds, acrylic copolymers, methacrylic copolymers and the like.
- a coating film can be formed by applying the coating composition of the present disclosure to a substrate and drying. It is preferred to apply the coating composition of the present disclosure directly to the substrate.
- the coating composition can be applied by known coating methods such as brush coating, spray coating, dip coating, flow coating, dispenser coating, and screen coating.
- curing may be performed if necessary.
- the curing may be performed layer by layer or collectively for a plurality of layers. Further, the curing may be performed simultaneously with the drying.
- the drying and curing conditions can be appropriately set depending on the coating composition of the present disclosure, the type of the upper layer, and the like.
- a substrate to which the coating composition of the present disclosure can be applied a substrate made of metal, concrete, plastic, stone, wood, paper or the like can be used.
- a base material made of a metal is preferable in that the adhesion of the coating film obtained from the coating composition of the present disclosure is more remarkably exhibited.
- the metal examples include iron; stainless steel; aluminum; copper; brass; titanium; galvanized steel plate plated with aluminum and the like. Of these, stainless steel is preferable.
- the coating composition of the present disclosure gives a coating film having excellent adhesion to the upper layer, it can be suitably used as an undercoat coating composition for a primer or the like.
- the upper layer is an elastomer layer, the adhesiveness is more remarkably exhibited, and therefore, it can be particularly suitably used as an undercoat coating composition for an elastomer.
- the upper layer is preferably a coating film of a coating composition containing an elastomer.
- Elastomers that can be used in the upper layer include fluororubber, nitrile rubber, hydrogenated nitrile rubber, styrene-butadiene rubber (SBR), chloroprene rubber (CR), butadiene rubber (BR), natural rubber (NR), isoprene rubber ( IR), ethylene- ⁇ -olefin rubber, ethylene- ⁇ -olefin-non-conjugated diene rubber, chlorinated polyolefin rubber, chlorosulfonated polyolefin rubber, acrylic rubber, ethylene-based acrylic rubber, epichlorohydrin rubber, silicone rubber, butyl rubber (IIR), Examples thereof include ethylene-vinyl ester rubber and ethylene-methacrylate rubber. Of these, fluororubber is preferable. It is one of the preferred embodiments that the coating composition of the present disclosure is an undercoat coating composition for fluororubber.
- fluororubber examples include vinylidene fluoride [VdF] fluorororubber, tetrafluoroethylene [TFE]/propylene [Pr] fluorororubber, TFE/Pr/VdF fluororubber, ethylene [Et]/hexafluoropropylene [HFP]. ] Fluorine rubber, Et/HFP/VdF type fluorinated rubber, Et/HFP/TFE type fluorinated rubber, fluorosilicone type fluorinated rubber, fluorophosphazene type fluorinated rubber and the like. Of these, VdF fluororubber is preferable.
- the fluororubber may be used alone or in combination of two or more.
- VdF fluororubber examples include VdF/HFP copolymer, VdF/TFE/HFP copolymer, VdF/chlorotrifluoroethylene [CTFE] copolymer, VdF/CTFE/TFE copolymer, VdF/perfluoro.
- CTFE chlorotrifluoroethylene
- the present disclosure has a metal plate, a coating film formed from the above-described coating composition of the present disclosure, which is provided on one surface or both surfaces of the metal plate, and an elastomer layer provided on the coating film. It also relates to a coated article characterized by the above. Since the coated article of the present disclosure has a coating film formed from the coating composition of the present disclosure, it has excellent interlayer adhesion and hot water resistance of each layer. The coated article of the present disclosure is also excellent in heat resistance (adhesion at high temperature) and antifreeze resistance.
- the metal plate it is possible to use a plate made of the metal exemplified as the base material to which the coating composition of the present disclosure can be applied.
- the coating film is provided on one side or both sides of the metal plate.
- the coating film is preferably provided directly on the metal plate.
- the coating film preferably has a thickness of 0.1 to 15 ⁇ m, more preferably 0.2 to 10 ⁇ m.
- the elastomer forming the elastomer layer As the elastomer forming the elastomer layer, the elastomers exemplified as the above-mentioned elastomer that can be used in the upper layer can be used, and among them, fluororubber is preferable. It is one of preferred embodiments that the elastomer layer is a fluororubber layer.
- the elastomer layer is preferably a coating film of a coating composition containing the elastomer.
- the elastomer layer preferably has a thickness of 5 to 50 ⁇ m, more preferably 10 to 30 ⁇ m.
- the elastomer layer may be provided directly on the coating film, or may be provided via another layer. Further, another layer may be provided on the elastomer layer.
- the coated article of the present disclosure includes, for example, applying the coating composition of the present disclosure on the metal plate and drying the coating composition obtained by applying the coating composition containing the elastomer to the coating film obtained by drying. Can be manufactured. After coating and drying the coating composition forming each layer, curing may be carried out if necessary. The curing may be carried out layer by layer or collectively for a plurality of layers. Further, the curing may be performed simultaneously with the drying. Drying and curing conditions can be appropriately set according to the type of the coating composition and the elastomer layer of the present disclosure.
- the coating composition and coated article of the present disclosure can be used in fields requiring interlayer adhesion, hot water resistance, antifreeze resistance, heat resistance, and the like.
- Example 1 A cresol novolac type epoxy resin (epoxy equivalent: 218 g/eg) was mixed with an aromatic amine curing agent at a ratio of 1H + g/eg to 1 g/eg of epoxy equivalent, and aminosilane (ketimine silane) was added to the above epoxy. 60 parts by mass of 100 parts by mass of resin and 35 parts by mass of epoxysilane (glycidoxysilane) were mixed with 100 parts by mass of the epoxy resin.
- epoxy equivalent epoxy equivalent: 218 g/eg
- aminosilane ketimine silane
- the epoxy resin, the aromatic amine-based curing agent, the aminosilane and the epoxysilane were dissolved in methyl ethyl ketone [MEK] so that the total mass thereof was 3% to obtain an undercoat coating composition for an elastomer.
- Example 2 An undercoat coating composition for elastomer was obtained in the same manner as in Example 1 except that epoxy silane was not added.
- Example 3 An undercoat coating composition for an elastomer was obtained in the same manner as in Example 1 except that aminosilane was not added.
- Comparative Example 1 An undercoat coating composition for elastomer was obtained in the same manner as in Example 1 except that aminosilane and epoxysilane were not blended.
- ⁇ Preparation of painted board (painted article)> An SUS301 plate (100 mm in length ⁇ 50 mm in width ⁇ 0.5 mm in thickness) that has been washed with acetone in advance is dip-coated with the undercoat coating composition for elastomers obtained in Examples and Comparative Examples, air-dried, and then heated to 200° C. After drying for 5 minutes and cooling, a fluororubber coating (diisobutylketone (DIBK) solution of VdF/HFP copolymer) is applied as a fluororubber layer by a flow coater and dried at 100° C. for 30 minutes, and then 200 The coated plate (coated article) having a thickness of 1 ⁇ m for the undercoat layer and a thickness of 25 ⁇ m for the fluororubber layer was obtained by baking at 30° C.
- DIBK diisobutylketone
- ⁇ Cross board test> The cellophane tape peeling was repeated 10 times in accordance with JIS K5400, and the number of squares (in 100 squares) of the coating film remaining without peeling was determined.
- ⁇ Appearance evaluation> The presence or absence of blisters on the surface of the coating film was visually observed, and those without blisters were evaluated as ⁇ , those with partial blisters were evaluated as ⁇ , and those with blisters on the entire surface were evaluated as x.
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Abstract
Description
本開示は、エポキシ樹脂、硬化剤、有機シラン系化合物及び有機溶剤を含むことを特徴とする塗料組成物に関する。
本開示の塗料組成物は、上記成分を含むので、金属基材及び上層(本開示の塗料組成物の塗膜の上に設けられる層)との密着性並びに耐熱水性に優れる塗膜を与えることができる。
本開示の塗料組成物は、また、耐熱性(高温下での密着性)及び耐不凍液性にも優れる塗膜を与えることができる。
なかでも、密着性、耐熱水性及び耐不凍液性に一層優れる塗膜が得られる点で、アミン系硬化剤が好ましい。
なお、上述の官能基を有するシランカップリング剤には、当該官能基が保護された形態のシランカップリング剤も包含される。例えば、保護されたアミノ基を有するシランカップリング剤は、アミノ基を有するシランカップリング剤に分類するものとする。
上記保護されたアミノ基を有するシランカップリング剤としては、ケチミン構造を有するものや、アルジミン構造を有するもの等が挙げられ、ケチミン構造を有するものが好ましい。
上記有機溶剤は、特に限定されず、例えば、メチルエチルケトン〔MEK〕、メチルイソブチルケトン〔MIBK〕等のケトン類、酢酸ブチル、酢酸イソペンチル等のエステル類、ジエチレングリコールジメチルエーテル等のエーテル類、トルエン、キシレン等の炭化水素類、N,N-ジメチルアセトアミド、N-メチル-2-ピロリドン等のアミド類を用いることができる。本開示の塗料組成物は、上記有機溶剤を1種のみ用いるものであってもよいし、2種以上の有機溶剤を用いるものであってもよい。上記有機溶剤の配合量は、上記塗料組成物に配合するエポキシ樹脂、アミン系硬化剤、有機シラン化合物の種類に応じて適宜調整することができる。
上記充填材としては、カーボンブラック、二硫化モリブデン、ホワイトカーボン、炭酸カルシウム、硫酸バリウム、タルク、珪酸カルシウム、上塗りに使用するエラストマー等が例示できる。
上記着色剤としては、無機顔料、複合酸化物顔料等が例示できる。
上記消泡剤としてはシリコン系消泡剤、ポリマー系消泡剤等が例示できる。
上記表面調整剤としてはシロキサン化合物、アクリル系共重合物、メタクリル系共重合物等が例示できる。
乾燥及び硬化の条件は、本開示の塗料組成物及び上層の種類等に応じて適宜設定することができる。
上記フッ素ゴムは、1種又は2種以上を用いることができる。
式(1):
CH2=CFRf (1)
(式中、Rfは炭素数1~12の直鎖状又は分岐状のフルオロアルキル基)
本開示の塗装物品は、本開示の塗料組成物から形成された塗膜を有するので、各層の層間密着性及び耐熱水性に優れる。
本開示の塗装物品は、また、耐熱性(高温下での密着性)及び耐不凍液性にも優れる。
また、上記エラストマー層の上に、更に他の層が設けられてもよい。
各層を形成する塗料組成物を塗布・乾燥した後、必要に応じて硬化を行ってもよい。上記硬化は、一層ごとに行ってもよく、複数の層についてまとめて行ってもよい。また、上記硬化を、上記乾燥と同時に行ってもよい。
乾燥及び硬化の条件は、本開示の塗料組成物及びエラストマー層の種類等に応じて適宜設定することができる。
実施例1
クレゾールノボラック型エポキシ樹脂(エポシキ当量:218g/eg)に対し、芳香族アミン硬化剤をエポキシ当量1g/egに対し1H+g/egとなる割合で配合し、更に、アミノシラン(ケチミンシラン)を上記エポキシ樹脂100質量部に対し、60質量部、エポキシシラン(グリシドキシシラン)を上記エポキシ樹脂100質量部に対し、35質量部配合した。上記エポキシ樹脂、上記芳香族アミン系硬化剤、上記アミノシラン及び上記エポキシシランの合計質量が3%になるようメチルエチルケトン〔MEK〕に溶かして、エラストマー用下塗り塗料組成物を得た。
エポキシシランを配合しない点以外は実施例1と同様にして、エラストマー用下塗り塗料組成物を得た。
アミノシランを配合しない点以外は実施例1と同様にして、エラストマー用下塗り塗料組成物を得た。
アミノシラン及びエポキシシランを配合しない点以外は実施例1と同様にして、エラストマー用下塗り塗料組成物を得た。
予めアセトン洗浄しておいたSUS301板(縦100mm×横50mm×厚み0.5mm)に、実施例及び比較例で得られたエラストマー用下塗り塗料組成物をディップ塗装して、風乾後、200℃にて5分乾燥し、冷却後、フッ素ゴム層として、フッ素ゴム塗料(VdF/HFP共重合体のジイソブチルケトン(DIBK)溶液)をフローコーターにて塗装し、100℃で30分乾燥した後に、200℃で30分焼成して、下塗り層厚み1μm、フッ素ゴム層厚み25μmの塗装板(塗装物品)を得た。
<耐熱水性評価>
500ml容積の瓶にイオン交換水400mlを注入し、実施例及び比較例の塗装板を入れて密閉し、120℃にて250時間又は500時間、塗装板を浸漬した。浸漬後、塗装板を取り出して洗浄、乾燥し、後述の碁盤目試験及び外観評価を実施した。
市販のトヨタ純正ロングライフクーラント(LLC)を水に溶かして50%(容量)水溶液を調製し、この水溶液に、120℃で500時間、塗装板を浸漬した。浸漬後、塗装板を取り出して洗浄、乾燥し、後述の碁盤目試験及び外観評価を実施した。
200℃で500時間熱老化させた20mm×100mmの塗装板を用いて、後述の碁盤目試験を実施した。
JIS K5400に準拠してセロハンテープ剥離を10回繰り返し、剥離せずに残存した塗膜のマス数(100マス中)を求めた。
<外観評価>
目視にて、塗膜表面のブリスターの有無を観察し、ブリスターがないものを〇、部分的にブリスターが発生したものを△、全面にブリスターが発生したものを×と評価した。
Claims (12)
- エポキシ樹脂、硬化剤、有機シラン系化合物及び有機溶剤を含むことを特徴とする塗料組成物。
- 前記エポキシ樹脂は、クレゾールノボラック型エポキシ樹脂である請求項1記載の塗料組成物。
- 前記硬化剤は、アミン系硬化剤である請求項1又は2記載の塗料組成物。
- 前記硬化剤は、芳香族アミン系硬化剤である請求項1~3のいずれかに記載の塗料組成物。
- 前記有機シラン系化合物は、シランカップリング剤である請求項1~4のいずれかに記載の塗料組成物。
- 前記有機シラン系化合物は、アミノ基を有するシランカップリング剤である請求項1~5のいずれかに記載の塗料組成物。
- 前記有機シラン系化合物は、エポキシ基を有するシランカップリング剤である請求項1~6のいずれかに記載の塗料組成物。
- エラストマー用下塗り塗料組成物である請求項1~7のいずれかに記載の塗料組成物。
- フッ素ゴム用下塗り塗料組成物である請求項1~8のいずれかに記載の塗料組成物。
- 金属板と、
前記金属板の片面又は両面に設けられた、請求項1~9のいずれかに記載の塗料組成物から形成された塗膜と、
前記塗膜の上に設けられたエラストマー層と
を有することを特徴とする塗装物品。 - 前記エラストマー層は、フッ素ゴム層である請求項10記載の塗装物品。
- フッ素ゴムコートガスケット材料である請求項10又は11記載の塗装物品。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2021502169A JP7295455B2 (ja) | 2019-02-21 | 2020-02-21 | 塗料組成物及び塗装物品 |
| CN202080014678.9A CN113453806A (zh) | 2019-02-21 | 2020-02-21 | 涂料组合物和涂装物品 |
| KR1020217029592A KR102569441B1 (ko) | 2019-02-21 | 2020-02-21 | 도료 조성물 및 도장 물품 |
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| JP2019-029422 | 2019-02-21 | ||
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| WO2020171194A1 true WO2020171194A1 (ja) | 2020-08-27 |
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| PCT/JP2020/006982 Ceased WO2020171194A1 (ja) | 2019-02-21 | 2020-02-21 | 塗料組成物及び塗装物品 |
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| Country | Link |
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| JP (1) | JP7295455B2 (ja) |
| KR (1) | KR102569441B1 (ja) |
| CN (1) | CN113453806A (ja) |
| WO (1) | WO2020171194A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023013226A (ja) * | 2021-07-15 | 2023-01-26 | 大日本塗料株式会社 | 塗料組成物 |
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| JPH05200357A (ja) * | 1992-01-29 | 1993-08-10 | Sekisui Jushi Co Ltd | 溶融亜鉛メッキ品の塗装体 |
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| JP2008308509A (ja) * | 2005-09-22 | 2008-12-25 | Daikin Ind Ltd | 塗料組成物及び塗装物品 |
| WO2014119741A1 (ja) * | 2013-02-04 | 2014-08-07 | 中国塗料株式会社 | 2成分型プライマー、プライマー塗膜、積層防汚塗膜および基材の防汚方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102073699B1 (ko) * | 2015-02-26 | 2020-02-05 | 주고꾸 도료 가부시키가이샤 | 방식 도료 조성물, 방식 도막, 방식 도막 부착 기재 및 방식 도막 부착 기재의 제조방법 |
| JP6934312B2 (ja) | 2017-04-04 | 2021-09-15 | Nok株式会社 | ゴム金属積層体およびガスケット |
-
2020
- 2020-02-21 WO PCT/JP2020/006982 patent/WO2020171194A1/ja not_active Ceased
- 2020-02-21 CN CN202080014678.9A patent/CN113453806A/zh active Pending
- 2020-02-21 KR KR1020217029592A patent/KR102569441B1/ko active Active
- 2020-02-21 JP JP2021502169A patent/JP7295455B2/ja active Active
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| JPH05200357A (ja) * | 1992-01-29 | 1993-08-10 | Sekisui Jushi Co Ltd | 溶融亜鉛メッキ品の塗装体 |
| JP2008308509A (ja) * | 2005-09-22 | 2008-12-25 | Daikin Ind Ltd | 塗料組成物及び塗装物品 |
| JP2007126565A (ja) * | 2005-11-04 | 2007-05-24 | Dainippon Toryo Co Ltd | 亜鉛めっき鋼板又は亜鉛合金めっき鋼板用塗料組成物及びその塗装鋼板 |
| WO2014119741A1 (ja) * | 2013-02-04 | 2014-08-07 | 中国塗料株式会社 | 2成分型プライマー、プライマー塗膜、積層防汚塗膜および基材の防汚方法 |
| JP2016117795A (ja) * | 2014-12-19 | 2016-06-30 | 菊水化学工業株式会社 | 2液型下塗り塗料組成物 |
| JP2017141401A (ja) * | 2016-02-12 | 2017-08-17 | 日本ペイントマリン株式会社 | 防食塗料組成物、塗膜、船舶及び海洋構造物 |
| WO2017159740A1 (ja) * | 2016-03-16 | 2017-09-21 | 中国塗料株式会社 | 塗料組成物、プライマー塗膜、積層防汚塗膜、プライマー塗膜付き基材の製造方法および積層防汚塗膜付き基材の製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2023013226A (ja) * | 2021-07-15 | 2023-01-26 | 大日本塗料株式会社 | 塗料組成物 |
| JP7274534B2 (ja) | 2021-07-15 | 2023-05-16 | 大日本塗料株式会社 | 塗料組成物 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20210128445A (ko) | 2021-10-26 |
| JP7295455B2 (ja) | 2023-06-21 |
| JPWO2020171194A1 (ja) | 2021-12-02 |
| KR102569441B1 (ko) | 2023-08-23 |
| CN113453806A (zh) | 2021-09-28 |
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