JP5402922B2 - 粉体塗料及び含フッ素積層体 - Google Patents
粉体塗料及び含フッ素積層体 Download PDFInfo
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- JP5402922B2 JP5402922B2 JP2010505625A JP2010505625A JP5402922B2 JP 5402922 B2 JP5402922 B2 JP 5402922B2 JP 2010505625 A JP2010505625 A JP 2010505625A JP 2010505625 A JP2010505625 A JP 2010505625A JP 5402922 B2 JP5402922 B2 JP 5402922B2
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- Prior art keywords
- fluororesin
- powder coating
- antioxidant substance
- coating material
- group
- Prior art date
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- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical class C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 15
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Classifications
-
- 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
- C09D5/033—Powdery paints characterised by the additives
- C09D5/036—Stabilisers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
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Description
高分子化合物(A)は、ポリアミドイミド〔PAI〕、ポリアミド、ポリアミド酸(ポリアミック酸)、及び、ポリイミドからなる群より選択される少なくとも1種であることが好ましく、PAIであることがより好ましい。
抗酸化性物質(B)は、上記アミド基の酸化を抑制することができるものである。上記抗酸化性物質(B)は、酸化還元電位が、アミド基の酸化還元電位より低いものであって、イミド基の酸化還元電位と同程度であるか又はイミド基の酸化還元電位に比べて高いものが好ましく、イミド基の酸化還元電位に比べて高いものがより好ましい。
上記抗酸化性物質(B)としては、上記アミド基の酸化を充分に抑制し得る点から、酸化状態が低い物質が好ましいと考えられる。上記抗酸化性物質(B)としては、耐熱性物質であることがより好ましい。上記抗酸化性物質(B)が耐熱性物質であると、本発明の粉体塗料を塗装する際の焼成を長時間行っても、上記抗酸化性物質(B)が分解や劣化を起こしにくいので、上記アミド基の酸化を抑制し続け、上記高分子化合物(A)による被塗装物との密着性を維持することができる。
本発明の粉体塗料は、フッ素樹脂(C)を有するので、塗装することによりフッ素樹脂(C)を主成分とする第1層(表層)、並びに、上記高分子化合物(A)及び上記抗酸化性物質(B)を主成分とする第2層の2層構造に分かれた塗膜を形成することができる。上記フッ素樹脂(C)を含む本発明の粉体塗料は、上記第1層上にフッ素樹脂(D)からなるフッ素樹脂層(以下、フッ素樹脂層(D)ともいう。)を積層する場合、上記第1層中のフッ素樹脂(C)と上記フッ素樹脂(D)との相溶性により、上記フッ素樹脂層との接着性に優れた塗膜を形成することができる。
本発明の粉体塗料は、造膜性、塗膜の耐腐蝕性等を向上する目的で、必要に応じ、上記高分子化合物(A)、抗酸化性物質(B)、又は、フッ素樹脂(C)の何れでもないその他の200℃以上の耐熱性を有する樹脂を配合したものであってもよい。
情報機器部品(紙分離爪、プリンタガイド、ギア、ベアリング)、コネクタ、バーニインソケット、ICソケット、油田用電気部品、リレー、電磁波シールド、リレーケース、スイッチ、カバー、端子板母線等の電気・電子産業関連用途;
バルブシート、油圧用シール、バックアップリング、ピストンリング、ウェアバンド、ベーン、ボールベアリングリテーナー、ローラー、カム、ギア、ベアリング、ラビリンスシール、ポンプ部品、機械的リンク機構、ブッシング、ファスナ、スプラインライナー、ブラケット、油圧ピストン、ケミカルポンプケーシング、バルブ、弁、タワーパッキン、コイルボビン、パッキン、コネクター、ガスケット、バルブシール等の機械工業関連用途;
スラストワッシャ、シールリング、ギア、ベアリング、タペット、エンジン部品(ピストン、ピストンリング、バルブステア)、トランスミッション部品(スプール弁、ボール逆止弁、シーリング)、ロッカーアーム等の車両工業関連用途;
ジェットエンジン部品(ブッシング、ワッシャ、スペーサー、ナット)、パワーコントロールクラッチ、ドアヒンジ用ベアリング、コネクター、チューブクランプ、ブラケット、油圧部品、アンテナ、レドーム、フレーム、燃料系統部品、コンプレッサ部品、ロケットエンジン部品、ウェアストリップ、コネクタシェルフ、宇宙構造体等の航空、宇宙産業関連用途等が挙げられる。その他にも、製罐機ピンカバー、メッキ装置用部品、原子力関連部品、超音波トランデューサ、ポテンショメータシャフト、給水栓部品等の用途が挙げられる。
ポリアミドイミド樹脂(商品名:トーロン4000T−40、ソルベイアドバンストポリマーズ社製)〔PAI〕を粉砕機(商品名:アトマイザー、ダルトン社製)で粉砕し、平均粒子径が36μmのPAI粒子粉砕品を得た。得られたPAI粒子粉砕品70g、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〔PFA〕(融点:310℃、平均粒子径:25μm)400g、ポリフェニレンサルファイド樹脂〔PPS〕(商品名:ライトンV−1、フィリップス社製、平均粒子径:17μm)30gを混合機(商品名:V型ブレンダー、ダルトン社製)で均一分散し、本発明の粉体塗料を得た。
10mmの幅に切れ目を入れた試験片を350℃の電気炉に入れ、20時間、30時間又は50時間加熱した後、室温に戻し、テンシロン万能試験機を用いてJIS K 6854−1(1999年)に準拠して引っ張り速度50mm/分で試験片に対して90°方向に剥離接着強さを測定した。但し、上記加熱後に試験片の塗膜が剥離した場合、剥離接着強さは0kgf/cmとした。
10mmの幅に切れ目を入れた試験片を98℃の熱水に24時間、72時間又は120時間浸漬した後、室温に戻し、耐熱性試験と同様にして試験片に対して90°方向に剥離接着強さを測定した。
上記剥離接着強さの試験において、剥離状態を観察し以下のように評価した。
/A:被塗装物と粉体塗料の焼成塗膜との間での剥離〔基材剥離〕
/B:粉体塗料の焼成塗膜とPFA樹脂層との間での剥離〔層間剥離〕
/C:粉体塗料の焼成塗膜の破壊による剥離〔凝集破壊〕
PAIの量を60g、PPSの量を40gに変更した以外は実施例1と同様の方法にて積層体Bを作成し、実施例1と同様の評価を行った。
PAIの量を50g、PPSの量を50gに変更した以外は実施例1と同様の方法にて積層体Cを作成し、実施例1と同様の評価を行った。
PAIの量を40g、PPSの量を60gに変更した以外は実施例1と同様の方法にて積層体Dを作成し、実施例1と同様の評価を行った。
PAIの量を30g、PPSの量を70gに変更した以外は実施例1と同様の方法にて積層体Eを作成し、実施例1と同様の評価を行った。
PAIの量を10g、PPSの量を90gに変更した以外は実施例1と同様の方法にて積層体Fを作成し、実施例1と同様の評価を行った。
実施例1で用いた鉄基材に代えて、実施例1で用いたものと同じアルミナ粉を用いてブラスト処理したステンレス鋼板(SUS304、縦100mm×横50mm×厚さ1.5mm、平均粗さ〔Ra〕=2〜3μm)を用いた以外は実施例1と同様の方法にて積層体Gを作成し、実施例1と同様の評価を行った。
PAIの量を60gに変更し、抗酸化性物質としてPPS40gに代えて、ベンゾチアゾール系化合物(2−メルカプトベンゾチアゾール亜鉛塩)1.0gとPPS40gとの混合物を用いた以外は実施例1と同様の方法にて積層体Hを作成し、実施例1と同様の評価を行った。
PFAの量を233.3gに変更した以外は実施例1と同様の方法にて積層体Iを作成し、実施例1と同様の評価を行った。
ポリアミドイミド樹脂(商品名:トーロン4000T−40、ソルベイアドバンストポリマーズ社製)〔PAI〕を粉砕機(商品名:アトマイザー、ダルトン社製)にて粉砕し平均粒子径が50μmのPAI粒子粉砕品を得た。得られたPAI粒子粉砕品50g、PPSを50g用いた以外は実施例1と同様にして、比較用積層体aを作成し実施例1と同様の評価を行った。
Claims (11)
- アミド基及び/又はイミド基を有する高分子化合物(A)、抗酸化性物質(B)、及び、フッ素樹脂(C)を含み、
前記高分子化合物(A)は、平均粒子径が50μm未満であり、
抗酸化性物質(B)は、高分子化合物(A)及び抗酸化性物質(B)の合計の30質量%以上であり、
高分子化合物(A)は、ポリアミドイミド、ポリアミド、ポリアミド酸、及び、ポリイミドからなる群より選択される少なくとも1種であり、
抗酸化性物質(B)は、ポリアリーレンサルファイド、アミン系化合物、ベンゾトリアゾール系化合物、ベンゾチアゾール系化合物、スルフェンアミド系化合物、及び、チオ尿素類からなる群より選択される少なくとも1種であり、
フッ素樹脂(C)は、テトラフルオロエチレンと、ヘキサフルオロプロピレン、及び、パーフルオロ(アルキルビニル)エーテルからなるフッ素含有単量体群のなかから選ばれる1種又は2種以上のフッ素含有単量体とを重合して得られた重合体である
ことを特徴とする粉体塗料。 - 抗酸化性物質(B)は、高分子化合物(A)及び前記抗酸化性物質(B)の合計の30〜80質量%である請求項1記載の粉体塗料。
- 高分子化合物(A)は、ポリアミドイミドである請求項1又は2記載の粉体塗料。
- 抗酸化性物質(B)は、ポリアリーレンサルファイドである請求項1、2又は3記載の粉体塗料。
- 抗酸化性物質(B)は、窒素含有化合物である請求項1、2又は3記載の粉体塗料。
- 抗酸化性物質(B)は、ポリアリーレンサルファイド及び窒素含有化合物である請求項1、2又は3記載の粉体塗料。
- フッ素樹脂(C)は、固形分質量が高分子化合物(A)、抗酸化性物質(B)及びフッ素樹脂(C)の合計の50〜90質量%である請求項1、2、3、4、5又は6記載の粉体塗料。
- フッ素樹脂(C)は、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)共重合体である請求項1、2、3、4、5、6又は7記載の粉体塗料。
- プライマーである請求項1、2、3、4、5、6、7又は8記載の粉体塗料。
- 被塗装物、前記被塗装物上に請求項1、2、3、4、5、6、7、8又は9記載の粉体塗料から形成されたプライマー層、及び、前記プライマー層上に形成されたフッ素樹脂層を有することを特徴とする含フッ素積層体。
- フッ素樹脂層は、膜厚が200μm以上である請求項10記載の含フッ素積層体。
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JPS6021193B2 (ja) | 1976-12-14 | 1985-05-25 | ダイキン工業株式会社 | フツ素樹脂被覆用組成物 |
US5789083A (en) | 1992-12-23 | 1998-08-04 | E. I. Du Pont De Nemours And Company | Aqueous fluoropolymer primer for smooth substrates |
CN1052029C (zh) * | 1992-12-23 | 2000-05-03 | 纳幕尔杜邦公司 | 水性涂料组合物及用其形成的涂覆基材和基材的涂覆方法 |
JPH08322732A (ja) | 1995-05-31 | 1996-12-10 | Matsushita Electric Ind Co Ltd | 調理用鍋 |
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2009
- 2009-03-23 CN CN200980105974.3A patent/CN101952375B/zh active Active
- 2009-03-23 WO PCT/JP2009/055640 patent/WO2009119493A1/ja active Application Filing
- 2009-03-23 KR KR1020107014821A patent/KR101263073B1/ko active IP Right Grant
- 2009-03-23 JP JP2010505625A patent/JP5402922B2/ja active Active
- 2009-03-23 US US12/934,940 patent/US8552115B2/en active Active
- 2009-03-23 EP EP09725011.2A patent/EP2258777B1/en active Active
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2004048489A1 (ja) * | 2002-11-22 | 2004-06-10 | Daikin Industries, Ltd. | 塗料組成物、含フッ素積層体及び樹脂組成物 |
JP2005335184A (ja) * | 2004-05-26 | 2005-12-08 | Daikin Ind Ltd | フッ素樹脂含有積層体 |
JP2005335186A (ja) * | 2004-05-26 | 2005-12-08 | Daikin Ind Ltd | フッ素樹脂含有積層体 |
Also Published As
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EP2258777A4 (en) | 2011-11-09 |
US20110027582A1 (en) | 2011-02-03 |
KR20100101631A (ko) | 2010-09-17 |
KR101263073B1 (ko) | 2013-05-09 |
JPWO2009119493A1 (ja) | 2011-07-21 |
CN101952375A (zh) | 2011-01-19 |
US8552115B2 (en) | 2013-10-08 |
EP2258777B1 (en) | 2019-02-20 |
CN101952375B (zh) | 2014-01-29 |
TW200946567A (en) | 2009-11-16 |
EP2258777A1 (en) | 2010-12-08 |
WO2009119493A1 (ja) | 2009-10-01 |
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