JP3485295B2 - Water-repellent paint - Google Patents
Water-repellent paintInfo
- Publication number
- JP3485295B2 JP3485295B2 JP21144597A JP21144597A JP3485295B2 JP 3485295 B2 JP3485295 B2 JP 3485295B2 JP 21144597 A JP21144597 A JP 21144597A JP 21144597 A JP21144597 A JP 21144597A JP 3485295 B2 JP3485295 B2 JP 3485295B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- powder
- repellent
- paint
- solvent
- 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 - Fee Related
Links
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- Paints Or Removers (AREA)
Description
【０００１】[0001]
【本発明の属する技術分野】本発明は、はっ水性、難着
雪性に優れたはっ水性塗料に関する。TECHNICAL FIELD The present invention relates to a water-repellent coating material having excellent water repellency and snow resistance.
【０００２】[0002]
【従来の技術】はっ水性、難着雪性に優れ、かつ、安価
なはっ水性塗料が開発されれば、該塗料を塗布すること
により着雪しにくいアンテナ、ケーブル、鉄塔、屋根等
の実現、さらには土木機器用治具等への広範な応用が可
能となる。しかしながら、従来提案されているはっ水性
塗料は、本来はっ水性が高いことで知られるフッ素化合
物等を主成分としているため、安価なものは実現できな
かった。2. Description of the Related Art If a water-repellent paint that is excellent in water repellency and snow resistance and is inexpensive is developed, antennas, cables, steel towers, roofs, etc. which are hard to snow by applying the paint It is possible to realize it and further, it can be widely applied to jigs for civil engineering equipment. However, since the water-repellent coatings proposed hitherto mainly contain a fluorine compound or the like, which is originally known to have high water-repellency, an inexpensive one could not be realized.
【０００３】たとえば、特開平６−１２２８３８号公報
には、分子末端までフッ素化した低分子量ポリテトラフ
ルオロエチレン（ＰＴＦＥ）の粉末をバインダー樹脂溶
液に混合分散させたはっ水性塗料が開示されている。ま
た、フッ素系のシランカップリング剤でガラス粉末等を
処理して得られる粉末をバインダー樹脂溶液に混合分散
させたはっ水性塗料も検討されている。これらのはっ水
性塗料では、粉末自体の表面がフッ素で覆われ疎水性と
なっている。従来、溶剤に不溶の粉末と、溶剤に可溶の
バインダー樹脂と、溶剤とを主成分とするはっ水性塗料
では、疎水性表面をもつ粉末を使用する必要があると考
えられており、そのため、最も疎水性の高い材料として
フッ素化合物が使用されてきた。For example, Japanese Unexamined Patent Publication (Kokai) No. 6-122838 discloses a water-repellent coating composition in which low molecular weight polytetrafluoroethylene (PTFE) powder fluorinated up to the molecular end is mixed and dispersed in a binder resin solution. . Further, a water-repellent coating obtained by mixing and dispersing a powder obtained by treating glass powder or the like with a fluorine-based silane coupling agent in a binder resin solution is also under study. In these water-repellent paints, the surface of the powder itself is covered with fluorine to be hydrophobic. Conventionally, it has been considered that a powder having a hydrophobic surface needs to be used in a water-repellent paint mainly composed of a solvent-insoluble powder, a solvent-soluble binder resin, and a solvent. Fluorine compounds have been used as the most hydrophobic material.
【０００４】[0004]
【発明が解決しようとする課題】しかし、一般にフッ素
化合物は高価であるため、はっ水性、難着雪性に優れ、
かつ、究めて安価なはっ水性塗料は開発されていなかっ
た。However, since fluorine compounds are generally expensive, they are excellent in water repellency and snow resistance.
Moreover, an extremely inexpensive water-repellent coating has not been developed.
【０００５】本発明の目的は、上記従来技術の有してい
た課題を解決して、はっ水性、難着雪性、に優れたはっ
水性塗料を究めて経済的に提供することにある。An object of the present invention is to solve the above problems of the prior art and to economically provide a water-repellent coating excellent in water repellency and snow resistance. .
【０００６】[0006]
【本課題を解決するための手段】本発明を概説すれば、
本発明ははっ水性塗料に関する発明であって、溶剤に不
溶の粉末と、溶剤に可溶のバインダー樹脂と、溶剤とを
主成分とするはっ水性塗料において、粉末の粒径が０．
０３μｍ以上、１．２μｍ以下で、かつ粉末の比表面積
が５０ｍ２／ｇ以下、４．５ｍ２／ｇ以上であり、かつ
前記粉末が酸化チタン、酸化ケイ素および酸化アルミニ
ウムからなる群から選択された一種以上であることを特
徴とする。The present invention will be summarized as follows.
The present invention relates to a water-repellent coating material, and in a water-repellent coating material containing a solvent-insoluble powder, a solvent-soluble binder resin, and a solvent as main components, the particle size of the powder is 0.
A type selected from the group consisting of titanium oxide, silicon oxide and aluminum oxide, having a specific surface area of 03 μm or more and 1.2 μm or less , and a specific surface area of the powder of 50 m 2 / g or less and 4.5 m 2 / g or more. The above is characterized.
【０００７】前記のような状況に鑑み、本発明者らは、
粉末の表面が親水性、疎水性に関わらず、特定の粒径ま
たは特定の比表面積を有する粉末を用いることによっ
て、優れたはっ水性塗料を実現できることを見い出し、
本発明を完成した。In view of the above situation, the present inventors have
It was found that an excellent water-repellent coating can be realized by using a powder having a specific particle size or a specific specific surface area regardless of whether the surface of the powder is hydrophilic or hydrophobic.
The present invention has been completed.
【０００８】[0008]
【本発明の実施形態】以下、本発明を具体的に説明す
る。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below.
【０００９】 本発明において、溶剤に不溶の粉末の粒
径を０．０３μｍ以上、１．２μｍ以下および粉末の比
表面積を５０ｍ２／ｇ以下、４．５ｍ２／ｇ以上に限定
したのは、この範囲の粉末を用いなければ高いはっ水性
を示す塗料が得られないためである。In the present invention, the particle size of the powder insoluble in the solvent is limited to 0.03 μm or more and 1.2 μm or less, and the specific surface area of the powder is limited to 50 m 2 / g or less and 4.5 m 2 / g or more. This is because a paint showing high water repellency cannot be obtained unless a powder in the range is used.
【００１０】（粉末）：本発明のはっ水性塗料に用いる
粉末としては、酸化チタン、酸化ケイ素および酸化アル
ミニウムからなる群から選択された一種以上である粉末
が例示される。これらの粉末は単独または複数を組み合
わせて用いることができる。(Powder): The powder used in the water-repellent coating material of the present invention includes titanium oxide, silicon oxide and
An example is a powder that is one or more selected from the group consisting of minium . These powders can be used alone or in combination of two or more.
【００１１】（はっ水粉末の含有量）：本発明のはっ水
性塗料におけるはっ水粉末の含有量は、どのような用途
に使用するかにも依存するが、溶媒等の揮発成分が揮発
した後の重量分率で２０〜９５％が好ましい。はっ水粉
末の含有量が少なすぎると高いはっ水性を示さず、多す
ぎると塗膜の機械的強度が弱くなる。(Content of water-repellent powder): The content of the water-repellent powder in the water-repellent coating material of the present invention depends on what purpose it is used in, but the volatile component such as a solvent is The weight fraction after volatilization is preferably 20 to 95%. If the content of the water repellent powder is too small, high water repellency is not exhibited, and if it is too large, the mechanical strength of the coating film becomes weak.
【００１２】（バインダー樹脂）：本発明のはっ水性塗
料に用いるバインダー樹脂としては、フッ素樹脂、シリ
コン樹脂、ポリエステル樹脂、エポキシ樹脂、アクリル
樹脂、ウレタン樹脂の中の１種類以上の樹脂もしくは混
合樹脂が例示される。(Binder resin): As the binder resin used in the water-repellent coating composition of the present invention, one or more kinds of fluororesin, silicone resin, polyester resin, epoxy resin, acrylic resin, urethane resin, or a mixed resin. Is exemplified.
【００１３】（添加剤）：本発明のはっ水性塗料には、
必要に応じて、着色剤、はっ水粉の分散剤、潤滑剤、酸
化防止剤、紫外線劣化防止剤等の添加剤を混合すること
ができる。(Additive): In the water-repellent coating material of the present invention,
If necessary, additives such as a colorant, a water-repellent powder dispersant, a lubricant, an antioxidant, and an ultraviolet deterioration inhibitor can be mixed.
【００１４】（製造方法）：本発明のはっ水性塗料は、
一般の塗料と同様にして、製造することができる。すな
わち、ボールミルやサンドミル等の撹拌混合装置を用い
て、はっ水粉末、バインダー樹脂、バインダー樹脂の溶
媒および添加剤等を撹拌混合することによって製造する
ことができる。(Production method): The water-repellent coating material of the present invention is
It can be manufactured in the same manner as a general paint. That is, it can be produced by stirring and mixing the water-repellent powder, the binder resin, the solvent of the binder resin, the additive, and the like using a stirring and mixing device such as a ball mill or a sand mill.
【００１５】[0015]
【実施例】以下、本発明のはっ水塗料について実施例お
よび比較例によって具体的に説明する。なお、本実施例
および比較例に用いた粉末の種類、塗料の作製方法、塗
膜特製の測定方法等は以下の表１および説明に示すとお
りである。EXAMPLES The water-repellent coating material of the present invention will be specifically described below with reference to Examples and Comparative Examples. The types of powder used in this example and the comparative example, the method for producing the coating material, the method for measuring the special coating film, and the like are as shown in Table 1 and the description below.
【００１６】 [0016]
【００１７】（塗料および塗膜試料の作製方法）：溶媒
等の揮発成分揮発後の塗料固形分に対して、溶剤に不溶
の粉末が９０ｗｔ％となるようにダイキン工業（株）の
ポリフッ化ビニリデン系塗料ワニス；ゼッフルＬＣ−９
５０と粉末と溶媒とを混合し、塗料を作製した。この塗
料をＦＲＰ基板（７６×２６ｍｍ）にスプレー塗装して
接触角測定用の塗膜試料を作製した。(Preparation method of paint and coating film sample): Polyvinylidene fluoride manufactured by Daikin Industries, Ltd. so that the powder insoluble in the solvent becomes 90 wt% with respect to the solid content of the paint after volatilization of volatile components such as solvent. System paint varnish; Zeffl LC-9
50 was mixed with powder and a solvent to prepare a paint. This coating material was spray coated on an FRP substrate (76 × 26 mm) to prepare a coating film sample for contact angle measurement.
【００１８】（水の接触角測定方法）：協和界面科学
（株）製の自動接触角計ＣＡ−Ｚ型を用い、はっ水性塗
料の乾燥塗膜面に約４μｌの蒸留水を滴下して、接触角
を測定した。(Method of measuring contact angle of water): Using an automatic contact angle meter CA-Z type manufactured by Kyowa Interface Science Co., Ltd., about 4 μl of distilled water was dropped on the dried coating surface of the water-repellent coating material. The contact angle was measured.
【００１９】[0019]
【実施例１】比表面積６．８ｍ2／ｇ、粒径０．２５μ
ｍの酸化チタン粉末ＣＬ−ＥＬを用いて塗料および塗膜
試料を作製した。この試料について水の接触角を測定し
たところ、１３８°の値を示した。すなわち、酸化チタ
ン自体の表面は親水性と考えられるにもかかわらず、そ
れを用いて作製した塗料の塗膜、優れたはっ水性を示し
た。これらの数値をまとめて他の例とともに後記表２に
示す。Example 1 Specific surface area 6.8 m 2 / g, particle size 0.25 μ
Paint and coating film samples were prepared using m-titanium oxide powder CL-EL. The contact angle of water on this sample was measured and found to be 138 °. That is, although the surface of titanium oxide itself is considered to be hydrophilic, the coating film of the paint produced using it showed excellent water repellency. These values are summarized in Table 2 below together with other examples.
【００２０】[0020]
【実施例２】比表面積７．１ｍ2／ｇ、粒径０．２５μ
ｍの酸化チタン粉末ＰＴ−２０１を用いて塗料および塗
膜試料を作製した。この試料について水の接触角を測定
したところ、１３９°の値を示し、優れたはっ水性を示
した。Example 2 Specific surface area 7.1 m 2 / g, particle size 0.25 μ
Paint and coating film samples were prepared using titanium oxide powder PT-201 of m. When the contact angle of water was measured for this sample, it showed a value of 139 ° and showed excellent water repellency.
【００２１】[0021]
【実施例３】比表面積２２．２ｍ2／ｇ、粒径０．７μ
ｍの酸化チタン粉末ＰＴ−１０１を用いて塗料および塗
膜試料を作製した。この試料について水の接触角を測定
したところ、１３８°の値を示し、優れたはっ水性を示
した。Example 3 Specific surface area 22.2 m 2 / g, particle size 0.7 μ
Paint and coating film samples were prepared using titanium oxide powder PT-101 of m. When the contact angle of water was measured for this sample, it showed a value of 138 ° and showed excellent water repellency.
【００２２】[0022]
【実施例４】比表面積２８ｍ2／ｇ、粒径０．２μｍの
酸化チタン粉末Ｔ−１を用いて塗料および塗膜試料を作
製した。この試料について水の接触角を測定したとこ
ろ、１３０°の値を示し、優れたはっ水性を示した。Example 4 A coating material and a coating film sample were prepared using titanium oxide powder T-1 having a specific surface area of 28 m 2 / g and a particle size of 0.2 μm. When the contact angle of water was measured for this sample, it showed a value of 130 ° and showed excellent water repellency.
【００２３】[0023]
【比較例１】比表面積１０２ｍ2／ｇ、粒径０．０２μ
ｍの酸化チタン粉末Ｔ−２を用いて塗料および塗膜試料
を作製した。この試料について水の接触角を測定したと
ころ、２０°以下（短時間で塗膜に水が侵入）であり、
ばつ水性を示さなかった。Comparative Example 1 Specific surface area 102 m 2 / g, particle size 0.02 μ
Paint and coating film samples were prepared using titanium oxide powder T-2 of m. When the contact angle of water was measured for this sample, it was 20 ° or less (water entered the coating film in a short time),
It was not water repellent.
【００２４】[0024]
【実施例５】比表面積４．５ｍ2／ｇ、粒径１．２μｍ
の酸化ケイ素粉末ＳＯ−Ｃ３を用いて塗料および塗膜試
料を作製した。この試料について水の接触角を測定した
ところ、１２９°の値を示した。すなわち、酸化ケイ素
自体の表面は親水性と考えられるにもかかわらず、それ
を用いて作製した塗料の塗膜、優れたはっ水性を示し
た。Example 5 Specific surface area of 4.5 m 2 / g, particle size of 1.2 μm
Paint and coating film samples were prepared using the above-mentioned silicon oxide powder SO-C3. When the contact angle of water was measured for this sample, a value of 129 ° was shown. That is, although the surface of silicon oxide itself is considered to be hydrophilic, the coating film of the paint prepared using it showed excellent water repellency.
【００２５】[0025]
【実施例６】比表面積７ｍ2／ｇ、粒径０．６μｍの酸
化ケイ素粉末ＳＯ−Ｃ２を用いて塗料および塗膜試料を
作製した。この試料について水の接触角を測定したとこ
ろ、１３０°の値を示し、優れたはっ水性を示した。Example 6 A coating material and a coating film sample were prepared using a silicon oxide powder SO-C2 having a specific surface area of 7 m 2 / g and a particle size of 0.6 μm. When the contact angle of water was measured for this sample, it showed a value of 130 ° and showed excellent water repellency.
【００２６】[0026]
【実施例７】比表面積２０ｍ2／ｇ、粒径０．３μｍの
酸化ケイ素粉末ＳＯ−Ｃ１を用いて塗料および塗膜試料
を作製した。この試料について水の接触角を測定したと
ころ、１２５°の値を示し、優れたはっ水性を示した。Example 7 A coating material and a coating film sample were prepared using a silicon oxide powder SO-C1 having a specific surface area of 20 m 2 / g and a particle size of 0.3 μm. When the contact angle of water was measured for this sample, it showed a value of 125 °, indicating excellent water repellency.
【００２７】[0027]
【実施例８】比表面積５０ｍ2／ｇ、粒径０．０３μｍ
の酸化ケイ素粉末Ａｅｒｏｓｉｌ−５０を用いて塗料お
よび塗膜試料を作製した。この試料について水の接触角
を測定したところ、１１７°の値を示し、優れたはっ水
性を示した。Example 8 Specific surface area 50 m 2 / g, particle size 0.03 μm
Paint and coating film samples were prepared using the silicon oxide powder Aerosil-50 of. When the contact angle of water was measured for this sample, it showed a value of 117 °, indicating excellent water repellency.
【００２８】[0028]
【実施例９】比表面積７ｍ2／ｇ、粒径０．８９μｍの
酸化アルミニウム粉末ＳＡＯ−５０２を用いて塗料およ
び塗膜試料を作製した。この試料について水の接触角を
測定したところ、１２５°の値を示した。すなわち、酸
化アルミニウム自体の表面は親水性と考えられるにもか
かわらず、それを用いて作製した塗料の塗膜、優れたは
っ水性を示した。Example 9 A paint and a coating film sample were prepared using aluminum oxide powder SAO-502 having a specific surface area of 7 m 2 / g and a particle size of 0.89 μm. When the contact angle of water was measured for this sample, a value of 125 ° was shown. That is, although the surface of aluminum oxide itself is considered to be hydrophilic, the coating film of the paint prepared using it showed excellent water repellency.
【００２９】[0029]
【比較例２】比表面積１００ｍ２／ｇ、粒径０．０１３
μｍの酸化アルミニウム粉末Ａｌ ２ Ｏ ３ −Ｃを用いて塗
料および塗膜試料を作製した。この試料について水の接
触角を測定したところ、２０°以下（短時間で塗膜に水
が侵入）であり、はっ水性を示さなかった。Comparative Example 2 Specific surface area 100 m 2 / g, particle size 0.013
A paint and a coating film sample was prepared using aluminum oxide powder Al 2 O 3 -C having a thickness of μm. When the contact angle of water was measured for this sample, it was 20 ° or less (water penetrated into the coating film in a short time) and showed no water repellency.
【００３０】 *：短時間で塗膜に水が侵入 [0030] *: Water enters the coating in a short time
【００３１】[0031]
【発明の効果】本発明のはっ水性塗料は、高いはつ水性
と難着雪性を有するので、防汚、雪害・着雪防止等の建
築や土木用途に広く利用できる。Since the water-repellent coating material of the present invention has high water repellency and snow resistance, it can be widely used in construction and civil engineering applications such as antifouling, snow damage and snow prevention.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−117637（ＪＰ，Ａ) 特開 平３−139571（ＪＰ，Ａ) 特開 平３−244681（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C09D 5/00,7/12 C09D 127/16,201/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-117637 (JP, A) JP-A-3-139571 (JP, A) JP-A-3-244681 (JP, A) (58) Field (Int.Cl. 7 , DB name) C09D 5 / 00,7 / 12 C09D 127 / 16,201 / 00
Claims (2)
ダー樹脂と、溶剤とを主成分とするはっ水性塗料におい
て、粉末の粒径が０．０３μｍ以上、１．２μｍ以下
で、かつ粉末の比表面積が５０ｍ２／ｇ以下、４．５ｍ
２／ｇ以上であり、かつ前記粉末が酸化チタン、酸化ケ
イ素および酸化アルミニウムからなる群から選択された
一種以上であることを特徴とするはっ水性塗料。1. A solvent-insoluble powder and a solvent-soluble vine.
Smell of water-repellent paint mainly composed of resin and solvent
And the particle size of the powder is 0.03 μm or more, 1.2 μm or less
And the specific surface area of the powder is 50mTwo/ G or less, 4.5m
2 / g or moreAnd the powder is titanium oxide or oxide
Selected from the group consisting of iodine and aluminum oxide
A water-repellent paint characterized by being one or more.
ー樹脂であって、バインダー樹脂にフッ素が含有されて
いることを特徴とするはっ水性塗料。2. A binder used in the water repellent coating composition according to claim 1.
-Being a resin, the binder resin contains fluorine
A water-repellent paint characterized by having
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21144597A JP3485295B2 (en) | 1997-07-04 | 1997-07-04 | Water-repellent paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21144597A JP3485295B2 (en) | 1997-07-04 | 1997-07-04 | Water-repellent paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1121473A JPH1121473A (en) | 1999-01-26 |
| JP3485295B2 true JP3485295B2 (en) | 2004-01-13 |
Family
ID=16606077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21144597A Expired - Fee Related JP3485295B2 (en) | 1997-07-04 | 1997-07-04 | Water-repellent paint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3485295B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3781900B2 (en) * | 1998-07-15 | 2006-05-31 | エヌ・ティ・ティ・アドバンステクノロジ株式会社 | Water repellent coating |
| KR101806598B1 (en) * | 2011-08-31 | 2017-12-07 | 스미또모 가가꾸 가부시끼가이샤 | Coating liquid, laminated porous film, and method for producing laminated porous film |
-
1997
- 1997-07-04 JP JP21144597A patent/JP3485295B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1121473A (en) | 1999-01-26 |
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