JP6826834B2 - トップコート用フッ素樹脂塗料及びその塗膜 - Google Patents
トップコート用フッ素樹脂塗料及びその塗膜 Download PDFInfo
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- JP6826834B2 JP6826834B2 JP2016146875A JP2016146875A JP6826834B2 JP 6826834 B2 JP6826834 B2 JP 6826834B2 JP 2016146875 A JP2016146875 A JP 2016146875A JP 2016146875 A JP2016146875 A JP 2016146875A JP 6826834 B2 JP6826834 B2 JP 6826834B2
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- coating film
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- paint
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Classifications
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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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
- B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
-
- 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
- C09D5/02—Emulsion paints including aerosols
-
- 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
- C09D5/03—Powdery paints
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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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
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Description
1.パーフルオロ(エチルビニルエーテル)の含有量が共重合体の全質量を基準として8〜20質量%である、結晶性テトラフルオロエチレン・パーフルオロ(エチルビニルエーテル)共重合体を含む、トップコート用フッ素樹脂塗料。
2.水系塗料または粉体塗料である、上記1に記載の塗料。
3.上記1または2に記載の塗料を用いて形成された塗膜。
4.基材がプライマー塗装されるか、または表面化成処理される、上記3に記載の塗膜。5.塗料に含まれる結晶性テトラフルオロエチレン・パーフルオロ(エチルビニルエーテル)共重合体の融点以上に加熱処理して得られた、上記3または4に記載の塗膜。
6.n−ヘキサンの接触角が27度以上である、上記3〜5のいずれかに記載の塗膜。
7.上記3〜6のいずれかに記載の塗膜を有する物品。
8.上記1または2に記載の塗料を塗装し、次いで加熱処理することを特徴とする、塗膜の形成方法。
9.塗料に含まれる結晶性テトラフルオロエチレン・パーフルオロ(エチルビニルエーテル)共重合体の融点以上に加熱処理することを特徴とする、上記8に記載の塗膜の形成方法。
本発明のトップコート用フッ素樹脂塗料は、熱溶融性フッ素樹脂の結晶性TFE/PEVE共重合体を含む。
(1)コモノマー含有量
試料を350℃で圧縮した後水冷して得られた厚さ約50ミクロンのフィルムの赤外吸収スペクトル(窒素雰囲気)から、特許文献6に記載の方法に従いコモノマー含有量を求めた。
ASTM D−1238−95に準拠した耐食性のシリンダー、ダイ、ピストンを備えたメルトインデクサー(東洋精機製)を用いて、5gの試料粉末を372±1℃に保持されたシリンダーに充填して5分間保持した後、5kgの荷重(ピストン及び重り)下でダイオリフィスを通して押出し、この時の押出速度(g/10分)をMFRとして求めた。
示差走査熱量計(Pyris1型DSC、パーキンエルマー社製)を用いた。
試料10mgを秤量して専用のアルミパンに入れ、専用のクリンパーによってクリンプした後、DSC本体に収納し、150℃から10℃/分で360℃まで昇温をする。試料を360℃で1分保持した後、150℃まで10℃/分で降温し、引き続き試料を150℃で1分間保持した後再度360℃まで10℃/分で昇温する。この時得られる融解曲線において、融解ピーク前後で曲線がベースラインから離れる点とベースラインに戻る点とを直線で結んで定められるピーク面積から、融解熱(ΔHm)を求めた。
性能評価に使用する塗膜を以下の手順で作製した。
(1)基材表面処理(塗膜洗浄)
基材アルミニウム(JIS A1050準拠品、50mm×100mm、厚み1mm)の表面を、食器用洗剤にて水洗後、イソプロピルアルコールで脱脂した。
上記(1)にて処理を施した基材に、エアースプレー塗装ガン(アネスト岩田(株)製 W−88−10E2 φ1mmノズル(手動ガン))を用いて、エアー圧力2.5〜3.0kgf/cm3で液体塗料PJ−BK832(三井・デュポンフロロケミカル(株)社製)を吹き付け、塗装を行った。塗装された液体質量が、基材1枚あたり約0.2g(0.15〜0.25g)となるように塗装し、強制通風循環炉で120℃×15分間乾燥後、さらに200℃×15分間乾燥し、膜厚6〜8μmの塗膜を形成させた。塗装環境は温度25℃、湿度60%RHであった。
上記(1)及び(2)にて処理したアルミニウム基材に、ディップ塗装機(株式会社SDI製 卓上ディップコーターDT−0502−PC)を用いて、引上げ速度0.1〜3mm/sで液体トップコートの塗装を行った。引上げ速度は後記の膜厚をサンプル間で均一にするために調整した。強制通風循環炉で120℃×15分間乾燥後、380℃×20分間焼成後、室温で冷却し、5−10μmの塗膜を形成させた。塗装環境は温度25℃、湿度60%RHであった。
上記(1)及び(2)にて処理したアルミニウム基材に、静電粉体塗装機(日本パーカライジング(株)製ハンドガンシステム GX7500CS)を用いて、粉体を塗装電圧20〜40kV(負)、吐出量約50g/minにて25cm離れているアースされたアルミニウム基材に静電吹付塗装を行った。基材1枚あたりの粉末質量は0.4〜0.5gとして、強制通風循環炉で380℃×20分間焼成後、室温で冷却し、40〜50μmの塗膜を形成させた。塗装環境は温度25℃、湿度60%RHであった。
塗膜の非粘着性、撥水撥油性を以下のように評価した。
全自動接触角計(協和界面化学株式会社 DM−701)を用いて、測定環境:25℃、湿度60%RHにて、n−ヘキサンの接触角(液滴サイズ:約4μL)を測定した。
全自動接触角計(協和界面化学株式会社 DM−701)を用いて、純水の滑落角を測定した。塗膜または押出成形シートを1度毎傾けていき、液滴(液滴サイズ:10μL)が滑落する直前の角度を滑落角とした。
特許文献4の実施例1に記載の方法にしたがって得られた樹脂固形分(樹脂の重量/水性分散液重量)が約26質量%であるTFE/PEVE共重合体水性分散液に、非イオン系界面活性剤(ライオン(株)製レオコールTDN90−80)を加えて安定化させた後、特許5185627号に記載の方法により重合で用いたフッ素系乳化剤を取り除き、その後、濃縮により分散液中の樹脂固形分を約60質量%に調整したTFE/PEVE共重合体の水性分散液を得た。
特許文献4の比較例1や特開2004−161921に記載の方法にしたがって得られた水性分散液を実施例1と同様に濃縮処理を行い、約60質量%に調整したTFE/PEVE共重合体の水性分散液を得た。
実施例1で得られたTFE/PEVE共重合体の水性分散液に、アクリル造膜剤、増粘剤、界面活性剤を加えて調整塗料を作製した。なお、380度焼成後の塗膜成分は、全固形分中でフッ素樹脂が100%となる(アクリルなどは、分解により揮散する)。
実施例1で得られたTFE/PEVE共重合体の水性分散液を用い、特公昭52−44576号公報に記載の方法により球状粒子を作製し、粉体塗料とした。
特許文献4の比較例1や特開2004−161921に記載の方法にしたがって得られた水性分散液を実施例1と同様に濃縮処理を行い、約60質量%に調整したTFE/PEVE共重合体の水性分散液を得た。
比較例1と同様の方法により、TFE/PEVE共重合体の水性分散液を得た。比較例1のTFE/PEVE共重合体と比べ、コモノマー(PEVE)の含有量は同等であるが、分子量が大きいためMFRが小さい樹脂となっている。
比較例1と同様の方法により、TFE/PEVE共重合体の水性分散液を得た。
三井・デュポンフロロケミカル(株)製 TFE/PPVE共重合体の水性分散液 PFA334−JRを用いた。
三井・デュポンフロロケミカル(株)製 TFE/PPVE共重合体の水性分散液 PFA335−JRを用いた。
三井・デュポンフロロケミカル(株)製 TFE/HFP共重合体の水性分散液 FEP 120−JRを用いた。
三井・デュポンフロロケミカル(株)製 PTFE水性分散液 PTFE 34−JRを用いた。
三井・デュポンフロロケミカル(株)製 トップコート用フッ素樹脂塗料 EJ−CL565を用いた。
三井・デュポンフロロケミカル(株)製 TFE/PPVE共重合体の水性分散液 PFA335−JRに、アクリル造膜剤、増粘剤、界面活性剤を加えて調整塗料を作製した。なお、380度焼成後の塗膜成分は、全固形分中でフッ素樹脂が100%となる(アクリルなどは、分解により揮散する)。
三井・デュポンフロロケミカル(株)製 TFE/PEVE共重合体のペレット PFA959−HP Plusを用い、株式会社プラ技研製 φ25mmフィルム押出成形機を使用して、成形温度360℃にて、幅150mm×厚み0.2mmtのシートを作製した。
三井・デュポンフロロケミカル(株)製 TFE/PPVE共重合体のペレット PFA350−Jを用い、株式会社プラ技研製 φ25mmフィルム押出成形機を使用して、成形温度360℃にて、幅150mm×厚み0.2mmtのシートを作製した。
Claims (9)
- パーフルオロ(エチルビニルエーテル)の含有量が共重合体の全質量を基準として8〜20質量%である、結晶性テトラフルオロエチレン・パーフルオロ(エチルビニルエーテル)共重合体(但し、アミノ基、アミド基、水酸基、ホスホン酸基、スルホン酸基、ニトリル基、ボロン酸基及びエポキシ基から選ばれる少なくとも一つの官能基及び炭素−炭素二重結合を有する炭化水素モノマーに由来する繰り返し単位を0.001〜25重量%含む共重合体を除く)を含む、トップコート用フッ素樹脂塗料。
- 水系塗料または粉体塗料である、請求項1に記載の塗料。
- 請求項1または2に記載の塗料を用いて形成された塗膜。
- 基材がプライマー塗装されるか、または表面化成処理される、請求項3に記載の塗膜。
- 塗料に含まれる結晶性テトラフルオロエチレン・パーフルオロ(エチルビニルエーテル)共重合体の融点以上に加熱処理して得られた、請求項3または4に記載の塗膜。
- n−ヘキサンの接触角が27度以上である、請求項3〜5のいずれか1項記載の塗膜。
- 請求項3〜6のいずれか1項記載の塗膜を有する物品。
- 請求項1または2に記載の塗料を塗装し、次いで加熱処理することを特徴とする、塗膜の形成方法。
- 塗料に含まれる結晶性テトラフルオロエチレン・パーフルオロ(エチルビニルエーテル)共重合体の融点以上に加熱処理することを特徴とする、請求項8に記載の塗膜の形成方法。
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KR1020197004996A KR20190034242A (ko) | 2016-07-27 | 2017-07-24 | 탑코트 형성용 플루오로수지 코팅 조성물 및 그로부터의 코팅 필름 |
PCT/US2017/043516 WO2018022504A1 (en) | 2016-07-27 | 2017-07-24 | Fluororesin coating composition for forming a topcoat and coating film therefrom |
EP17746618.2A EP3491084B1 (en) | 2016-07-27 | 2017-07-24 | Fluororesin coating composition for forming a topcoat and coating film therefrom |
US16/320,434 US11970628B2 (en) | 2016-07-27 | 2017-07-24 | Fluororesin coating composition for forming a topcoat and coating film therefrom |
KR1020227015461A KR102581714B1 (ko) | 2016-07-27 | 2017-07-24 | 탑코트 형성용 플루오로수지 코팅 조성물 및 그로부터의 코팅 필름 |
CN201780046250.0A CN109715745B (zh) | 2016-07-27 | 2017-07-24 | 用于形成面涂层的氟树脂涂料组合物和由其形成的涂膜 |
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JP2022117687A (ja) | 2021-02-01 | 2022-08-12 | 三井・ケマーズ フロロプロダクツ株式会社 | ポリテトラフルオロエチレンおよび/または変性ポリテトラフルオロエチレンからなる加熱処理シートの延伸にて作製された多孔膜 |
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JP5665800B2 (ja) * | 2012-06-22 | 2015-02-04 | 三井・デュポンフロロケミカル株式会社 | テトラフルオロエチレン/パーフルオロ(アルキルビニルエーテル)共重合体 |
US10294362B2 (en) * | 2012-08-06 | 2019-05-21 | Daikin Industries, Ltd. | Resin composition and molded article |
JP6395411B2 (ja) * | 2014-03-25 | 2018-09-26 | 三井・ケマーズ フロロプロダクツ株式会社 | テトラフルオロエチレンとパーフルオロ(エチルビニルエーテル)との共重合体を含む複合成形体 |
JP6347727B2 (ja) * | 2014-11-17 | 2018-06-27 | キヤノン株式会社 | 定着部材、定着装置及び画像形成装置 |
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KR20220062695A (ko) | 2022-05-17 |
KR20190034242A (ko) | 2019-04-01 |
JP2018016697A (ja) | 2018-02-01 |
EP3491084A1 (en) | 2019-06-05 |
US11970628B2 (en) | 2024-04-30 |
KR102581714B1 (ko) | 2023-09-22 |
EP3491084B1 (en) | 2020-09-09 |
US11879066B2 (en) | 2024-01-23 |
US20190264059A1 (en) | 2019-08-29 |
US20220073777A1 (en) | 2022-03-10 |
CN109715745A (zh) | 2019-05-03 |
WO2018022504A1 (en) | 2018-02-01 |
CN109715745B (zh) | 2021-10-08 |
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