JP3819210B2 - Powder coating composition - Google Patents

Powder coating composition Download PDF

Info

Publication number
JP3819210B2
JP3819210B2 JP2000098734A JP2000098734A JP3819210B2 JP 3819210 B2 JP3819210 B2 JP 3819210B2 JP 2000098734 A JP2000098734 A JP 2000098734A JP 2000098734 A JP2000098734 A JP 2000098734A JP 3819210 B2 JP3819210 B2 JP 3819210B2
Authority
JP
Japan
Prior art keywords
film
forming component
silicone
coating composition
powder coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2000098734A
Other languages
Japanese (ja)
Other versions
JP2001279186A (en
Inventor
純人 鈴木
功 原島
正行 高橋
信夫 竹沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dainichiseika Color and Chemicals Mfg Co Ltd
Original Assignee
Dainichiseika Color and Chemicals Mfg Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dainichiseika Color and Chemicals Mfg Co Ltd filed Critical Dainichiseika Color and Chemicals Mfg Co Ltd
Priority to JP2000098734A priority Critical patent/JP3819210B2/en
Publication of JP2001279186A publication Critical patent/JP2001279186A/en
Application granted granted Critical
Publication of JP3819210B2 publication Critical patent/JP3819210B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Silicon Polymers (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、粉体塗料組成物に関し、詳しくは、金属をはじめとする耐熱性を有する各種素材に、塗布、焼き付け乾燥することにより、なめらかで潤滑性があり、なおかつ長期的に耐久性のある被膜を形成することにより、産業用機械部品、一般消費財等に接触する物品との摩擦を低減せしめることで、物品の移動を容易にすることのできる粉体塗料組成物に関する。
【0002】
【従来の技術】
従来、接触する物質との摩擦を低減する潤滑性被膜は溶剤型塗料の形態で供されてきた。しかし、潤滑性成分であるシリコーン類は、高分子量になるほど潤滑性が向上する反面、塗料中の他の成分との相溶性は逆に悪くなるという問題があった。
【0003】
また、大気汚染、火災等の問題が重視されるにつれ、潤滑性を有する粉体塗料が市場より求められるようになってきた。しかし、従来の技術では粉体塗料に潤滑性成分を安定して均一に分散させることが難しく、溶剤型の潤滑塗料と同等の性能を出すことができなかった。
【0004】
【発明が解決しようとする課題】
そこで、本発明は、潤滑性成分であるシリコーン類を適切に選択し、粉体塗料における潤滑性成分の分散性を改良することで、なめらかで潤滑性があり、しかも有機溶剤等を使用しないため大気汚染を防止することができ、かつ火災の危険性をも著しく低減することで、上述の欠点を改良した粉体塗料組成物を提供することを課題とする。
【0005】
【課題を解決するための手段】
上記課題を解決するための請求項1記載の発明は、エポキシ樹脂とポリエステル樹脂の組み合わせからなる熱硬化性樹脂と該熱硬化性樹脂に各々対応する硬化剤とからなる被膜形成成分に、潤滑性成分として前記被膜形成成分と一体構造をなすシリコーン類を配合してなり、該シリコーン類は、前記熱硬化性樹脂又は前記硬化剤の官能基と反応する官能基を有しており、被膜形成成分の硬化反応過程でそれらと架橋反応し、被膜形成成分と一体構造となることを特徴とする粉体塗料組成物である。
【0006】
請求項2記載の発明は、エポキシ樹脂とポリエステル樹脂の組み合わせからなる熱硬化性樹脂と該熱硬化性樹脂に各々対応する硬化剤とからなる被膜形成成分に、潤滑性成分として前記被膜形成成分と一体構造をなすシリコーン類を配合してなり、該シリコーン類は、予め前記熱硬化性樹脂又は前記硬化剤の官能基と反応したシリコーン変性樹脂を用いることを特徴とする粉体塗料組成物である。
【0007】
請求項3記載の発明は、シリコーン類の平均分子量が500以上であることを特徴とする請求項1又は2記載の粉体塗料組成物である。
【0008】
請求項4記載の発明は、被膜形成成分と潤滑性成分であるシリコーン類との配合比率が、被膜形成成分100重量部に対して、シリコーン類が10重量部以下であることを特徴とする請求項1、2又は3記載の粉体塗料組成物である。
【0010】
【発明の実施の形態】
以下、本発明の実施の形態について詳述する。
【0011】
本発明は、基本的には被膜形成成分と潤滑性成分から構成される。
【0012】
本発明に用いられる被膜形成成分は、エポキシ樹脂とポリエステル樹脂の組み合わせからなる熱硬化性樹脂と、該熱硬化性樹脂に各々対応する硬化剤とからなる。
【0014】
硬化剤としては、Primid(β−ヒドロキシアルキルアミド)、TGIC(トリグリシジルイソシアヌレート)、イソシアネート、アミン、二塩基酸等が挙げられ、上記熱硬化性樹脂群の中から選ばれた一種又は二種以上の熱硬化性樹脂に各々対応する硬化剤を選択して使用することができる。
【0015】
これら熱硬化性樹脂と硬化剤との各々が架橋反応することで強固な被膜構造を形成する。
【0016】
本発明に用いられる潤滑性成分であるシリコーン類は、上記被膜形成成分と一体構造をなすものが使用される。この目的で好ましく使用できるシリコーン類には、被膜形成成分の硬化反応過程でそれらと架橋反応することで、被膜形成成分と一体構造となる官能基を有する反応性シリコーンと、それら反応性シリコーンを用いて各種有機ポリマーを変性したシリコーン変性樹脂とに大別することができ、本発明においてはいずれも好ましく用いることができる。これらのシリコーンは、シリコーン類が被膜形成成分と架橋反応することにより一体構造となり、潤滑性成分が均一に分散した粉体塗料組成物を得ることができるようになる。
【0017】
反応性シリコーンは、主鎖にポリシロキサン構造を有しており、片末端若しくは両末端に、被膜形成成分を構成する熱硬化性樹脂又は硬化剤の官能基と反応することができる官能基を有している。
【0018】
反応性シリコーンの有する官能基の種類としては、アミノ基、水酸基、エポキシ基、カルボキシル基等が挙げられる。
【0019】
アミノ基を官能基とする反応性シリコーンの例としては、H2N-(CH2)3-[Si-(Me)2]-[(OSi)-(Me)2]n-O-[Si-(Me)2]-(CH2)3-NH2(−Meはメチル基である。)等が挙げられ、水酸基を官能基とする反応性シリコーンの例としては、HOC24-O-(CH2)3-[Si-(Me)2]-[(OSi)-(Me)2]n-O-[Si-(Me)2]-(CH2)3O-C24-OH(−Meはメチル基である。)等が挙げられ、エポキシ基を官能基とする反応性シリコーンの例としては、[CH2CHO]CH2-O-(CH2)3-[Si-(Me)2]-[(OSi)-(Me)2]n-O-[Si-(Me)2]-(CH2)3O-CH2-[OCHCH2](−Meはメチル基である。)等が挙げられ、カルボキシル基を官能基とする反応性シリコーンの例としては、COOH(CH2)10-[Si-(Me)2]-[(OSi)-(Me)2]n-O-[Si-(Me)2]-(CH2)10O-COOH(−Meはメチル基である。)等が挙げられる。但し、上記の例示はすべて官能基が両末端に存する例である。官能基が片末端に存する場合は官能基の一つが任意の置換又は無置換のアルキル基(例えばメチル基、エチル基、ブチル基等)で置き換えられる。
【0020】
より具体的には、商品名「DC3037」、「DC3074」(以上、東レ・ダウコーニング・シリコーン社製)、商品名「サイラプレーンFM−0425」、「サイラプレーンFM−4425」(以上、チッソ社製)等が挙げられる。
【0021】
反応性シリコーンの官能基が片末端の場合には被膜形成成分の架橋構造の側鎖として、反応性シリコーンの官能基が両末端の場合には被膜形成成分の架橋構造の一部となって、被膜形成成分に潤滑性を付与するが、片末端又は両末端のいずれかを単独で用いた場合、或いはそれぞれを適当な割合でブレンドして用いた場合のいずれの場合であっても本発明上の効果を得ることができる。
【0022】
反応性シリコーンを用いて各種有機ポリマーを変性したシリコーン変性樹脂は、アクリル樹脂、メタクリル樹脂を変性して側鎖に反応性シリコーンを櫛形に架橋したものであり、熱硬化反応するために複数の官能基を持っているものである。さらに、潤滑性を補助するためシリコーン変性に加え、PTFE(ポリテトラフルオロエチレン)構造を併せて変性した樹脂を用いることもできる。この場合、シリコーン変性樹脂は被膜形成成分の樹脂成分であっても硬化剤成分であっても本発明上問題はない。
【0023】
より具体的には、商品名「SR2215」、「SR2145」(以上、東レ・ダウコーニング・シリコーン社製)、商品名「TSF410」、「TSF4420」(以上、東芝シリコーン社製)、商品名「SCT−8102」(チッソ社製)等が挙げられる。
【0024】
これらシリコーン類の平均分子量については、平均分子量が500以上であれば本発明上特に制約はないが、好ましくは、分子量5,000〜数万の範囲である。
【0025】
シリコーン類の平均分子量が500未満であっては、粉体塗料の溶融粘度の低下を招き、焼き付け乾燥工程で被膜のタレを生じるばかりか、保存安定性にも影響を及ぼす恐れがある。
【0026】
本発明では、潤滑性成分であるシリコーン類を単独で用いることで、本発明における効果は十分得られるが、必要に応じて潤滑補助成分としてパウダー類を添加することができる。
【0027】
潤滑補助成分であるパウダー類は、有機パウダー類と無機パウダー類に大別することができる。
【0028】
有機パウダー類としては、潤滑性に優れるポリテトラフッ化エチレンパウダー、ポリトリフロロクロロエチレンパウダー、ポリフッ化ビニリデンパウダー等が好ましいが、必ずしもこれらに限定される必要はなく、被膜形成成分との相溶性、潤滑付与性等を勘案して、ウレタンパウダー、アクリルパウダー、ポリメチルメタクリレート(PMMA)パウダー、ポリアミドパウダー、ポリスチレンパウダー、ポリエチレンパウダー等でも構わない。
【0029】
無機パウダー類については、より球状に近いビーズ状のものが好ましく、例えばセラミックビーズ、ガラスビーズ、タングステンカーバイト、アルミナ等のビーズ状微小金属粉等が挙げられる。
【0030】
なお、本発明に係る粉体塗料組成物は、上述の被膜形成成分、潤滑性成分、潤滑補助成分の他に、顔料、硬化促進剤、流動調整剤、その他、従来から用いられている各種添加剤を任意の適当量含有することができる。
【0031】
本発明において、被膜形成成分と潤滑性成分であるシリコーン類との配合比率は、被膜形成成分100重量部に対して、シリコーン類が10重量部以下、好ましくは1重量部以下である。シリコーン類の配合比率が10重量部を越えると、未反応シリコーンの残存量が多くなり、シリコーン汚染等が問題となり、塗膜物性が相対的に低下する恐れがある。
【0032】
本発明に係る粉体塗料組成物を製造するには、上述の被膜形成成分、潤滑性成分、必要応じて潤滑補助成分、その他の任意の添加剤を計量し、例えばスーパーミキサー等で混合し、押出機で主として被膜形成成分の溶融温度以上、硬化温度以下の温度範囲で混練して押し出し、冷却後、アトマイザー等で平均粒径5〜60μmに粉砕し、任意のメッシュで分級した後、本発明に係る粉体塗料組成物を得ることができる。
【0033】
【実施例】
以下、本発明を実施例により詳述するが、本発明は以下の実施例によって限定されるものではない。
【0034】
(実施例1)
以下の各成分をスーパーミキサーで均一に混合した。
【0035】

Figure 0003819210
【0036】
次いで、得られた混合物を押出機に充填して120℃の温度で加熱溶融し、混練して押し出し、冷却後、アトマイザーで平均粒径約20μmまで粉砕して、さらにこの粉末100重量部当たり、流動調整剤(微粉末シリカ)0.2重量部を加え、均一に混合して本発明に係る粉体塗料組成物を得た。
【0037】
得られた粉体塗料組成物を、スズメッキ鋼板、ニッケルメッキ鋼板に粉体塗装用ハンドガン(ONODA製GX−107)でそれぞれ塗布し、180℃/20分間硬化させ、膜厚約50μmの塗膜を形成した。これらの塗膜について、塗膜外観、動摩擦係数、静摩擦係数の評価を行い、結果を表1に示した。
【0038】
(実施例2)
実施例1において、混合物の成分を以下の通りに代えた以外は実施例1と同様にして粉体塗料組成物の製造及び塗膜形成を行い、その塗膜について塗膜外観、動摩擦係数、静摩擦係数の評価を行い、結果を表1に示した。
【0039】
Figure 0003819210
【0042】
実施例3)実施例1において、混合物の成分を以下の通りに代えた以外は実施例1と同様にして粉体塗料組成物の製造及び塗膜形成を行い、その塗膜について塗膜外観、動摩擦係数、静摩擦係数の評価を行い、結果を表1に示した。
【0043】
Figure 0003819210
【0044】
(比較例1)
実施例1において、混合物の成分を以下の通りに代えた以外は実施例1と同様にして粉体塗料組成物の製造及び塗膜形成を行い、その塗膜について塗膜外観、動摩擦係数、静摩擦係数の評価を行い、結果を表1に示した。
【0045】
ポリエステル樹脂(Uralac P2504 DSM社製) 66.2重量部
エポキシ樹脂(アラルダイトAER6054 旭チバ社製) 4.3重量部
硬化剤(アルキュアー4400 McWhorter社製) 16.5重量部
流動調整剤(Byk362P Byk-Chemie社製) 0.6重量部
ベンゾイン 0.6重量部
沈降性バリウム 4.4重量部
顔料類(TIPAQUE CR−50 石原産業社製) 7.4重量部
【0046】
(比較例2)
実施例1において、混合物の成分を以下の通りに代えた以外は実施例1と同様にして粉体塗料組成物の製造及び塗膜形成を行い、その塗膜について塗膜外観、動摩擦係数、静摩擦係数の評価を行い、結果を表1に示した。
【0047】
ポリエステル樹脂(Uralac P2612 DSM社製) 51.8重量部
エポキシ樹脂(エピコート1004 油化・シェル化学社製)34.5重量部
流動調整剤(アクロナール4F BASF社製) 1.3重量部
ベンゾイン 0.6重量部
沈降性バリウム 4.4重量部
顔料類(TIPAQUE CR−50 石原産業社製) 7.4重量部
【0048】
(比較例3)
実施例1において、混合物の成分を以下の通りに代えた以外は実施例1と同様にして粉体塗料組成物の製造及び塗膜形成を行い、その塗膜について塗膜外観、動摩擦係数、静摩擦係数の評価を行い、結果を表1に示した。
【0049】
Figure 0003819210
【0050】
(測定方法及び評価方法)
摩擦係数は、静・動摩擦摩耗測定装置DF−SS型(協和界面社製)を用いて測定した。
【0051】
塗膜外観の評価は目視外観試験を行い、以下の基準に従って評価した。
◎:特に優れている。
○:優れている。
△:やや劣っている。
×:外観上問題がある。
【0052】
【表1】
Figure 0003819210
【0053】
表1において、実施例1〜3は潤滑性成分を添加したものであるが、潤滑性成分未添加である比較例1、2と比べ、いずれも潤滑性が向上していることがわかる。また、実施例1〜3から、シリコーン形態にかかわらず、潤滑性が発現し、塗膜外観も優れていることがわかる。
【0054】
比較例3は架橋基を持たないシリコーンを添加した例である。被膜形成成分と一体構造を有しないため、シリコーンが均一に分散せず、潤滑性が劣る。更に、塗膜外観においても表面が荒れるため、評価が低かった。この結果より、被膜と潤滑性成分が一体構造となることにより本発明の効果が実証された。
【0055】
【発明の効果】
本発明によれば、金属をはじめとする耐熱性を有する各種素材に、塗布、焼き付け乾燥することにより、なめらかで潤滑性のある被膜を形成でき、接触する物質との摩擦を低減する潤滑性被膜を得ることができる。また、有機溶剤等の溶剤を使用せず、このため、溶剤による大気汚染を防止すると共に、火災の危険性をも著しく低減する。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a powder coating composition, and in particular, by applying, baking, and drying various heat-resistant materials such as metals, it is smooth and lubricous, and has long-term durability. The present invention relates to a powder coating composition capable of facilitating movement of an article by reducing friction with an article that comes into contact with industrial machine parts, general consumer goods, etc. by forming a film.
[0002]
[Prior art]
Conventionally, lubricious coatings that reduce friction with contacting materials have been provided in the form of solvent-based paints. However, silicones, which are lubricating components, have improved lubricity as the molecular weight increases, but have a problem in that compatibility with other components in the coating is adversely affected.
[0003]
Further, as problems such as air pollution and fire are regarded as important, powder coatings having lubricity have been demanded from the market. However, in the conventional technique, it is difficult to stably and uniformly disperse the lubricating component in the powder coating material, and the same performance as that of the solvent-type lubricating coating material cannot be obtained.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention appropriately selects silicones that are lubricating components, and improves the dispersibility of the lubricating components in the powder coating material, so that it is smooth and lubricous, and does not use organic solvents or the like. It is an object of the present invention to provide a powder coating composition that can prevent air pollution and significantly reduce the risk of fire, thereby improving the above-mentioned drawbacks.
[0005]
[Means for Solving the Problems]
The invention of claim 1, wherein for solving the above problems, a thermosetting resin comprising a combination of epoxy resin and polyester resin, the film-forming component comprising a respective corresponding curative thermosetting resin, lubricating Silicone having a monolithic structure with the film-forming component is blended as a functional component , and the silicone has a functional group that reacts with a functional group of the thermosetting resin or the curing agent to form a film. It is a powder coating composition characterized in that it undergoes a cross-linking reaction with them in the course of curing reaction of the components to form an integral structure with the film-forming component .
[0006]
According to a second aspect of the invention, a thermosetting resin comprising a combination of epoxy resin and polyester resin, the film-forming component comprising a respective corresponding curative thermosetting resin, the film-forming component as a lubricating component A powder coating composition comprising a silicone-modified resin previously reacted with a functional group of the thermosetting resin or the curing agent. is there.
[0007]
The invention according to claim 3 is the powder coating composition according to claim 1 or 2 , wherein the silicone has an average molecular weight of 500 or more.
[0008]
The invention according to claim 4 is characterized in that the blending ratio of the film-forming component and the silicone which is a lubricating component is 10 parts by weight or less of silicones with respect to 100 parts by weight of the film-forming component. Item 4. The powder coating composition according to Item 1, 2, or 3 .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0011]
The present invention basically comprises a film forming component and a lubricating component.
[0012]
The film forming component used in the present invention comprises a thermosetting resin composed of a combination of an epoxy resin and a polyester resin, and a curing agent corresponding to each of the thermosetting resins.
[0014]
Examples of the curing agent include Primid (β-hydroxyalkylamide), TGIC (triglycidyl isocyanurate), isocyanate, amine, dibasic acid, and the like, one or two selected from the above thermosetting resin group A curing agent corresponding to each of the above thermosetting resins can be selected and used.
[0015]
Each of the thermosetting resin and the curing agent undergoes a crosslinking reaction to form a strong film structure.
[0016]
As the silicone that is the lubricating component used in the present invention, those having an integral structure with the film forming component are used. For the silicones that can be preferably used for this purpose, reactive silicones having functional groups that are integrated with the film-forming component by crosslinking reaction with the film-forming component in the course of curing reaction, and these reactive silicones are used. And can be roughly classified into silicone-modified resins obtained by modifying various organic polymers, and any of them can be preferably used in the present invention. These silicones have a monolithic structure due to the crosslinking reaction of the silicones with the film forming component, and a powder coating composition in which the lubricating component is uniformly dispersed can be obtained.
[0017]
Reactive silicone has a polysiloxane structure in the main chain and has a functional group capable of reacting with a functional group of a thermosetting resin or a curing agent constituting the film forming component at one or both ends. is doing.
[0018]
Examples of the functional group possessed by the reactive silicone include an amino group, a hydroxyl group, an epoxy group, and a carboxyl group.
[0019]
Examples of reactive silicones having amino groups as functional groups include H 2 N— (CH 2 ) 3 — [Si— (Me) 2 ] — [(OSi) — (Me) 2 ] n —O— [Si -(Me) 2 ]-(CH 2 ) 3 -NH 2 (-Me is a methyl group) and the like, and examples of reactive silicones having a hydroxyl group as a functional group include HOC 2 H 4 -O. - (CH 2) 3 - [ Si- (Me) 2] - [(OSi) - (Me) 2] n -O- [Si- (Me) 2] - (CH 2) 3 O-C 2 H 4 —OH (—Me is a methyl group) and the like, and examples of reactive silicones having an epoxy group as a functional group include [CH 2 CHO] CH 2 —O— (CH 2 ) 3 — [Si - (Me) 2] - [ (OSi) - (Me) 2] n -O- [Si- (Me) 2] - (CH 2) 3 O-CH 2 - [OCHCH 2] (- Me represents a methyl group As examples of reactive silicones having a carboxyl group as a functional group, COOH (CH 2 ) 10- [Si- (Me) 2] - [(OSi) - (Me) 2] n -O- [Si- (Me) 2] - (CH 2) 10 O-COOH (-Me is a methyl group.), And the like. However, all the above examples are examples in which functional groups exist at both ends. When a functional group is present at one end, one of the functional groups is replaced with any substituted or unsubstituted alkyl group (for example, a methyl group, an ethyl group, a butyl group, etc.).
[0020]
More specifically, trade names “DC3037” and “DC3074” (above, manufactured by Toray Dow Corning Silicone), trade names “Silaplane FM-0425”, “Silaplane FM-4425” (above, Chisso Corporation) Manufactured) and the like.
[0021]
When the functional group of the reactive silicone is at one end, it becomes a side chain of the cross-linking structure of the film-forming component, and when the functional group of the reactive silicone is at both ends, it becomes a part of the cross-linking structure of the film-forming component, Although lubricity is imparted to the film-forming component, either the case where one end or both ends are used alone, or the case where each is blended at an appropriate ratio, is used in the present invention. The effect of can be obtained.
[0022]
Silicone-modified resins in which various organic polymers are modified with reactive silicone are those in which acrylic resin and methacrylic resin are modified and the reactive silicone is cross-linked in a comb shape on the side chain. It has a group. Furthermore, in addition to silicone modification, a resin modified with a PTFE (polytetrafluoroethylene) structure can also be used in order to assist lubricity. In this case, there is no problem in the present invention whether the silicone-modified resin is a resin component of a film forming component or a curing agent component.
[0023]
More specifically, trade names “SR2215”, “SR2145” (above, manufactured by Toray Dow Corning Silicone), trade names “TSF410”, “TSF4420” (above, manufactured by Toshiba Silicone), trade names “SCT” -8102 "(manufactured by Chisso Corporation).
[0024]
The average molecular weight of these silicones is not particularly limited in the present invention as long as the average molecular weight is 500 or more, but the molecular weight is preferably in the range of 5,000 to tens of thousands.
[0025]
If the average molecular weight of the silicone is less than 500, the melt viscosity of the powder coating material is lowered, and not only the film sagging occurs in the baking and drying process, but also the storage stability may be affected.
[0026]
In the present invention, the effects of the present invention can be sufficiently obtained by using silicones which are lubricating components alone, but powders can be added as a lubricating auxiliary component if necessary.
[0027]
Powders that are lubricating auxiliary components can be broadly classified into organic powders and inorganic powders.
[0028]
The organic powders are preferably polytetrafluoroethylene powder, polytrifluorochloroethylene powder, polyvinylidene fluoride powder, etc., which are excellent in lubricity, but are not necessarily limited to these. In consideration of the imparting property and the like, urethane powder, acrylic powder, polymethyl methacrylate (PMMA) powder, polyamide powder, polystyrene powder, polyethylene powder, and the like may be used.
[0029]
Inorganic powders are preferably in the form of beads that are closer to a sphere, such as ceramic beads, glass beads, tungsten carbide, beaded fine metal powders such as alumina, and the like.
[0030]
The powder coating composition according to the present invention includes pigments, curing accelerators, flow regulators, and various other conventionally used additives in addition to the above-described film forming component, lubricating component, and lubricating auxiliary component. Any appropriate amount of agent can be included.
[0031]
In the present invention, the blending ratio of the film-forming component and the silicone that is the lubricating component is 10 parts by weight or less, preferably 1 part by weight or less for silicones with respect to 100 parts by weight of the film-forming component. If the blending ratio of the silicones exceeds 10 parts by weight, the remaining amount of unreacted silicone will increase, causing silicone contamination and the like, and the physical properties of the coating film may be relatively lowered.
[0032]
In order to produce the powder coating composition according to the present invention, the above-mentioned film forming component, lubricity component, lubrication auxiliary component, if necessary, other optional additives are weighed, and mixed with, for example, a super mixer, After kneading and extruding mainly in the temperature range above the melting temperature and below the curing temperature of the film-forming component with an extruder, cooling, pulverizing to an average particle size of 5 to 60 μm with an atomizer, etc., and classifying with an arbitrary mesh, the present invention The powder coating composition which concerns on can be obtained.
[0033]
【Example】
EXAMPLES Hereinafter, although an Example explains this invention in detail, this invention is not limited by a following example.
[0034]
Example 1
The following components were uniformly mixed with a super mixer.
[0035]
Figure 0003819210
[0036]
Next, the obtained mixture was filled in an extruder, heated and melted at a temperature of 120 ° C., kneaded and extruded, cooled, ground to an average particle size of about 20 μm with an atomizer, and further per 100 parts by weight of the powder. 0.2 parts by weight of a flow control agent (fine powder silica) was added and mixed uniformly to obtain a powder coating composition according to the present invention.
[0037]
The obtained powder coating composition was applied to a tin-plated steel plate and a nickel-plated steel plate with a powder coating hand gun (GX-107 made by ONODA) and cured at 180 ° C./20 minutes to form a coating film having a film thickness of about 50 μm. Formed. The coating film appearance, dynamic friction coefficient, and static friction coefficient were evaluated for these coating films, and the results are shown in Table 1.
[0038]
(Example 2)
In Example 1, except that the components of the mixture were changed as follows, the powder coating composition was produced and the coating film was formed in the same manner as in Example 1, and the coating film appearance, dynamic friction coefficient, static friction were applied to the coating film. The coefficients were evaluated and the results are shown in Table 1.
[0039]
Figure 0003819210
[0042]
( Example 3 ) Production of a powder coating composition and formation of a coating film were carried out in the same manner as in Example 1 except that the components of the mixture were changed as follows in Example 1, and the coating film appearance was observed for the coating film. The dynamic friction coefficient and the static friction coefficient were evaluated, and the results are shown in Table 1.
[0043]
Figure 0003819210
[0044]
(Comparative Example 1)
In Example 1, except that the components of the mixture were changed as follows, the powder coating composition was produced and the coating film was formed in the same manner as in Example 1, and the coating film appearance, dynamic friction coefficient, static friction were applied to the coating film. The coefficients were evaluated and the results are shown in Table 1.
[0045]
Polyester resin (Uralac P2504 manufactured by DSM) 66.2 parts by weight Epoxy resin (Araldite AER6054 manufactured by Asahi Ciba) 4.3 parts by weight curing agent (Alcure 4400 McWhorter) 16.5 parts by weight flow regulator (Byk362P Byk- (Made by Chemie) 0.6 parts by weight benzoin 0.6 parts by weight sedimentary barium 4.4 parts by weight pigments (TIPAQUE CR-50 manufactured by Ishihara Sangyo Co., Ltd.) 7.4 parts by weight
(Comparative Example 2)
In Example 1, except that the components of the mixture were changed as follows, the powder coating composition was produced and the coating film was formed in the same manner as in Example 1, and the coating film appearance, dynamic friction coefficient, static friction were applied to the coating film. The coefficients were evaluated and the results are shown in Table 1.
[0047]
Polyester resin (Uralac P2612 manufactured by DSM) 51.8 parts by weight Epoxy resin (Epicoat 1004 Yuka & Shell Chemical Co.) 34.5 parts by weight Flow control agent (Acronal 4F manufactured by BASF) 1.3 parts by weight benzoin 6 parts by weight sedimentary barium 4.4 parts by weight pigments (TIPAQUE CR-50 manufactured by Ishihara Sangyo Co., Ltd.) 7.4 parts by weight
(Comparative Example 3)
In Example 1, except that the components of the mixture were changed as follows, the powder coating composition was produced and the coating film was formed in the same manner as in Example 1, and the coating film appearance, dynamic friction coefficient, static friction were applied to the coating film. The coefficients were evaluated and the results are shown in Table 1.
[0049]
Figure 0003819210
[0050]
(Measurement method and evaluation method)
The friction coefficient was measured using a static / dynamic friction wear measuring apparatus DF-SS type (manufactured by Kyowa Interface Co., Ltd.).
[0051]
The appearance of the coating film was evaluated by a visual appearance test and evaluated according to the following criteria.
A: Particularly excellent.
○: Excellent.
Δ: Slightly inferior
X: There is a problem in appearance.
[0052]
[Table 1]
Figure 0003819210
[0053]
In Table 1, although Examples 1-3 add a lubricity component, it turns out that all have improved lubricity compared with the comparative examples 1 and 2 which are not lubrication component addition. Moreover, from Examples 1-3 , it turns out that lubricity expresses and the coating-film external appearance is excellent irrespective of a silicone form.
[0054]
Comparative Example 3 is an example in which silicone having no crosslinking group was added. Since it does not have an integral structure with the film forming component, the silicone is not uniformly dispersed and the lubricity is poor. Furthermore, since the surface was rough in the appearance of the coating film, the evaluation was low. From this result, the effect of the present invention was proved by the integral structure of the coating film and the lubricating component.
[0055]
【The invention's effect】
According to the present invention, a smooth and lubricious film can be formed on various heat-resistant materials such as metals by applying, baking and drying, and the friction film with which the friction with the contacting substance is reduced can be formed. Can be obtained. In addition, no solvent such as an organic solvent is used, thereby preventing air pollution by the solvent and significantly reducing the risk of fire.

Claims (4)

エポキシ樹脂とポリエステル樹脂の組み合わせからなる熱硬化性樹脂と該熱硬化性樹脂に各々対応する硬化剤とからなる被膜形成成分に、潤滑性成分として前記被膜形成成分と一体構造をなすシリコーン類を配合してなり、該シリコーン類は、前記熱硬化性樹脂又は前記硬化剤の官能基と反応する官能基を有しており、被膜形成成分の硬化反応過程でそれらと架橋反応し、被膜形成成分と一体構造となることを特徴とする粉体塗料組成物。 An epoxy resin and a thermosetting resin comprising a combination of a polyester resin, a film forming component comprising a curing agent, each corresponding to a thermosetting resin, silicones which forms a unitary structure with the film-forming component as a lubricating component The silicone has a functional group that reacts with the functional group of the thermosetting resin or the curing agent, and undergoes a crosslinking reaction in the course of the curing reaction of the film-forming component. A powder coating composition characterized by having a monolithic structure . エポキシ樹脂とポリエステル樹脂の組み合わせからなる熱硬化性樹脂と該熱硬化性樹脂に各々対応する硬化剤とからなる被膜形成成分に、潤滑性成分として前記被膜形成成分と一体構造をなすシリコーン類を配合してなり、該シリコーン類は、予め前記熱硬化性樹脂又は前記硬化剤の官能基と反応したシリコーン変性樹脂を用いることを特徴とする粉体塗料組成物。 An epoxy resin and a thermosetting resin comprising a combination of a polyester resin, a film forming component comprising a curing agent, each corresponding to a thermosetting resin, silicones which forms a unitary structure with the film-forming component as a lubricating component A powder coating composition characterized in that a silicone-modified resin that has been previously reacted with the functional group of the thermosetting resin or the curing agent is used as the silicone . シリコーン類の平均分子量が500以上であることを特徴とする請求項1又は2記載の粉体塗料組成物。The powder coating composition according to claim 1 or 2 , wherein the silicone has an average molecular weight of 500 or more. 被膜形成成分と潤滑性成分であるシリコーン類との配合比率が、被膜形成成分100重量部に対して、シリコーン類が10重量部以下であることを特徴とする請求項1、2又は3記載の粉体塗料組成物。Mixing ratio of the silicones is film-forming component and a lubricating component, with respect to the film forming component 100 parts by weight, silicones of claim 1, 2 or 3, wherein the more than 10 parts by weight Powder coating composition.
JP2000098734A 2000-03-31 2000-03-31 Powder coating composition Expired - Lifetime JP3819210B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000098734A JP3819210B2 (en) 2000-03-31 2000-03-31 Powder coating composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000098734A JP3819210B2 (en) 2000-03-31 2000-03-31 Powder coating composition

Publications (2)

Publication Number Publication Date
JP2001279186A JP2001279186A (en) 2001-10-10
JP3819210B2 true JP3819210B2 (en) 2006-09-06

Family

ID=18613185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000098734A Expired - Lifetime JP3819210B2 (en) 2000-03-31 2000-03-31 Powder coating composition

Country Status (1)

Country Link
JP (1) JP3819210B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2379652B1 (en) * 2009-01-06 2016-03-30 Ewald Dörken Ag Method for producing a powder coating
KR102173751B1 (en) * 2018-11-30 2020-11-03 주식회사 케이씨씨 Powder coating composition

Also Published As

Publication number Publication date
JP2001279186A (en) 2001-10-10

Similar Documents

Publication Publication Date Title
US6936663B1 (en) Powder coating compositions containing POSS compounds
EP1469050B1 (en) Coating composition for use in sliding parts
WO1999011725A1 (en) Coating compounds based on silanes containing epoxide groups
CN1155672C (en) Coating compositions with a base consisting of silanes contg. epoxide groups
PL173087B1 (en) Thermally hardenable coating composition in powdered form
CN1486344A (en) Powder coating compositions containing reactive nanoparticles
JP3819210B2 (en) Powder coating composition
EP3115391B1 (en) Powder coating composition and coated article
KR100246294B1 (en) Solventless coating
JP3819219B2 (en) Powder coating composition
CN112898836A (en) Teflon coating and preparation process and application thereof
JP4901013B2 (en) Powder coating composition excellent in stain resistance and method for forming coating film using the same
CN1820058A (en) Hydrophobic coatings comprising reactive nano-particles
JP2000273390A (en) Powder coating composition
JPH061952A (en) Heat-resistant coating
CN114806353A (en) Powder coating composition
US20180304287A1 (en) Spray application system components comprising a repellent surface & methods
CN108148489A (en) A kind of oil rub resistance self-healing coatings and preparation method thereof, application
KR20080092080A (en) Primer composition for plastic depositing comprising water dispersable acrylic emulsion and acrylic urethane dispersed resin
JP2004352945A (en) Powder coating
JPS58136663A (en) Coating composition
JP2645494B2 (en) Composition for paint
WO2000037577A1 (en) Coating compositions containing cerium dioxide
JP3944387B2 (en) Powder coating composition excellent in stain resistance and method for forming coating film using the same
JP3325728B2 (en) Powder coating, production method thereof, and powder coating method using the same

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060516

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060614

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100623

Year of fee payment: 4