EP2594343B1 - Matériau hydrophobe - Google Patents
Matériau hydrophobe Download PDFInfo
- Publication number
- EP2594343B1 EP2594343B1 EP12192414.6A EP12192414A EP2594343B1 EP 2594343 B1 EP2594343 B1 EP 2594343B1 EP 12192414 A EP12192414 A EP 12192414A EP 2594343 B1 EP2594343 B1 EP 2594343B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- fine uneven
- hydrophobic
- petal
- hydrophobic molecule
- 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.)
- Not-in-force
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Classifications
-
- 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
- B05D3/10—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 other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- 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
- B05D2350/00—Pretreatment of the substrate
- B05D2350/60—Adding a layer before coating
- B05D2350/63—Adding a layer before coating ceramic layer
Definitions
- the petal-like structure is formed of boehmite and the columnar structure is formed of bayerite.
- hydrophobic molecule molecules including a fluoroalkyl group (Rf) and molecules including a hydrocarbon group are known.
- the hydrophobicity of a hydrophobic molecule including Rf is higher than that of a hydrophobic molecule including a hydrocarbon group.
- the hydrophobic molecule including Rf has high hydrophobicity as the number of carbons in Rf increases.
- examples of the polar functional group (B) include:
- a third specific example is a molecule including an Rf having 8 carbon atoms or more (hereinafter referred to as "hydrophobic molecule (c)”) as a hydrophobic molecule including a silanol-based functional group.
- boehmite and bayerite are known to be formed during hydro-thermal sealing of an anodic oxidation coating film.
- boehmite is formed by treatment at about 80°C or higher, while bayerite is formed by treatment at about 80°C or lower.
- a pattern including two regions of a region in which a nickel catalyst is present on a silicon substrate and the other region in which the surface of the silicon substrate is exposed is formed.
- the method of covering the hydrophobic molecule is not particularly limited, and various methods may be used.
- the covering with the hydrophobic molecule is performed by dissolving the hydrophobic molecule in a suitable solvent to prepare a solution, coating the solution on the surface of the fine uneven structure, and volatilizing the solvent.
- a coating film of the hydrophobic molecule may be formed on the surface of the fine uneven structure.
- the coating method of the solution include coating by a brush, dipping, spin coat, sink and the like.
- the heating temperature is preferably 50°C or more.
- FIG. 1(a) illustrates a schematic cross-sectional view of a hydrophobic material in the related art.
- FIG. 1(b) illustrates a schematic cross-sectional view of a hydrophobic material according to the present invention.
- the surface of the substrate is subjected to predetermined treatment, it is possible to form a fine uneven structure including a fine (for example, a size of nanometer) petal-like structure and a coarse (for example, a size from submicron to micron) columnar structure, as illustrated in FIG. 1(b) .
- a fine uneven structure including a fine (for example, a size of nanometer) petal-like structure and a coarse (for example, a size from submicron to micron) columnar structure, as illustrated in FIG. 1(b) .
- the surface of the fine uneven structure is coated with a hydrophobic molecule, the surface of the substrate exhibits super hydrophobicity.
- the hydrophobic material including the fine uneven structure exhibits excellent super hydrophobicity, compared to a hydrophobic material in the related art including only a petal-like structure.
- Water droplets on the surface of the substrate are ideally supported in the vicinity of the vertex of the coarse columnar structure, as illustrated in FIG. 1(b) , and thus the distance from the valley of the petal-like structure to the water droplet becomes elongated. That is, water droplets on the surface of the substrate, which are hydrophobic and have a fine uneven structure, are brought into contact with the projections of the fine uneven structure in terms of the microscopic scale, and an air layer is formed between the projections.
- the smaller the contact area between water droplets and the projections becomes that is, the larger the area of the interface between the air layer formed between the projections and water droplets becomes , the larger the contact angle with water droplets becomes .
- a combination of the columnar structure and the petal-like structure also has excellent super hydrophobicity against these large water droplets, compared to the structural body formed only of the petal-like structure due to effects of expanding the area of the interface between the air layer/the water droplets by the above-described columnar structure.
- a fine uneven structure When a fine uneven structure is prepared with only water, only a petal-like structure is formed, as illustrated in FIG. 6 . Meanwhile, when a fine uneven structure is prepared with a triethylamine aqueous solution, a coarse columnar structure is grown along with a petal-like structure, as illustrated in FIG. 4 . Some of the coarse columnar structures are grown vertically to the substrate plane and some are obliquely inclined or are also lying on the substrate plane, and thus the growth direction thereof is random.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Materials For Medical Uses (AREA)
Claims (5)
- Matériau hydrophobe comprenant les constitutions suivantes :(1) le matériau hydrophobe comprenant :un substrat,une structure irrégulière fine formée sur une surface du substrat ; etune molécule hydrophobe recouvrant une surface de la structure irrégulière fine, et(2) la structure irrégulière fine comprenant :une structure en forme de pétale formée d'un agrégat d'une pluralité de particules en forme de plaque ; etune structure en colonne formée de particules en colonne,où une longueur allant de la surface du substrat à un sommet de la structure en colonne est plus longue qu'une longueur depuis la surface du substrat jusqu'à un sommet de la structure en forme de pétale,où la structure en forme de pétale est une structure dans laquelle des particules fines en forme de plaque ayant une épaisseur de taille nanométrique sont densément tassées en pétales, etoù la structure en forme de pétale est formée dans une zone dans laquelle au moins la structure en colonne n'est pas formée dans la surface de la structure.
- Matériau hydrophobe selon la revendication 1, dans lequel la structure irrégulière fine est formée d'un oxyde métallique ou d'un matériau comprenant un groupe fonctionnel polaire (A) au moins sur la surface de celui-ci,
la molécule hydrophobe comprend un groupe fonctionnel polaire (B) capable de former une liaison chimique avec la surface de la structure irrégulière fine, et
le matériau hydrophobe est obtenu en recouvrant la surface de la structure irrégulière fine avec la molécule hydrophobe et en formant une liaison chimique de la surface de la structure irrégulière fine avec le groupe fonctionnel polaire (B). - Matériau hydrophobe selon la revendication 1, dans lequel la structure en forme de pétale est formée de boehmite et
la structure en colonne est formée de bayérite. - Matériau hydrophobe selon la revendication 1, dans lequel la molécule hydrophobe comprend une ou plusieurs molécules choisies dans le groupe des molécules représentées par les formules (a) et formules (b) suivantes :où, R : un hydrocarbure monovalent ayant 1 à 8 atomes de carbone,X : -OR (R est un groupe alkyle), -OH ou un atome d'halogène,
- Matériau hydrophobe selon la revendication 1, dans lequel le substrat est formé d'un matériau contenant de l'aluminium.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011249135A JP5656026B2 (ja) | 2011-11-14 | 2011-11-14 | 撥水材及びその製造方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2594343A2 EP2594343A2 (fr) | 2013-05-22 |
EP2594343A3 EP2594343A3 (fr) | 2013-09-11 |
EP2594343B1 true EP2594343B1 (fr) | 2019-04-17 |
Family
ID=47500883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12192414.6A Not-in-force EP2594343B1 (fr) | 2011-11-14 | 2012-11-13 | Matériau hydrophobe |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2594343B1 (fr) |
JP (1) | JP5656026B2 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6206660B2 (ja) * | 2013-09-25 | 2017-10-04 | 日産自動車株式会社 | 透明撥水体及びその製造方法 |
JP6176035B2 (ja) * | 2013-09-30 | 2017-08-09 | 日産自動車株式会社 | 微細表面構造体及びその製造方法 |
US10301482B2 (en) | 2014-07-25 | 2019-05-28 | University Of Florida Research Foundation, Inc. | Superoleophobic alumina coatings |
JP2016107530A (ja) * | 2014-12-08 | 2016-06-20 | 株式会社豊田中央研究所 | 撥水材及びその製造方法 |
WO2018147125A1 (fr) * | 2017-02-09 | 2018-08-16 | ダイキン工業株式会社 | Ailettes et échangeur de chaleur |
JP7031790B2 (ja) | 2019-04-18 | 2022-03-08 | Dic株式会社 | 構造体、構造体の製造方法、熱交換機用部材及び熱交換器 |
CN113853506A (zh) * | 2019-09-20 | 2021-12-28 | 山一钢有限公司 | 热交换器用构件、热交换器、空调机以及冰箱 |
JP7427240B2 (ja) | 2020-03-30 | 2024-02-05 | 学校法人 龍谷大学 | 表面構造体、およびそれを用いた液滴の回収方法 |
KR102631226B1 (ko) | 2020-04-28 | 2024-02-01 | 디아이씨 가부시끼가이샤 | 발수성 알루미늄재 및 그 제조 방법 |
Family Cites Families (11)
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JP3688042B2 (ja) * | 1996-01-24 | 2005-08-24 | セントラル硝子株式会社 | 超撥水撥油防汚性膜及びその形成法 |
JPH10281690A (ja) * | 1997-02-07 | 1998-10-23 | Hitachi Ltd | 空気調和機、熱交換器及びその製造方法 |
JP2004136630A (ja) * | 2001-11-08 | 2004-05-13 | Nippon Sheet Glass Co Ltd | 機能性皮膜被覆物品、およびその製造方法 |
JP4256662B2 (ja) * | 2001-11-08 | 2009-04-22 | 日本板硝子株式会社 | 皮膜被覆物品、およびその製造方法 |
JP4762945B2 (ja) | 2003-08-27 | 2011-08-31 | Nuエコ・エンジニアリング株式会社 | カーボンナノウォール構造体 |
JP2005315142A (ja) | 2004-04-28 | 2005-11-10 | Hitachi Koki Co Ltd | オイルフリースクロール形真空ポンプ |
US20070031639A1 (en) * | 2005-08-03 | 2007-02-08 | General Electric Company | Articles having low wettability and methods for making |
JP2007144916A (ja) * | 2005-11-30 | 2007-06-14 | Asahi Glass Co Ltd | 超撥水性基体 |
JP2008104936A (ja) | 2006-10-25 | 2008-05-08 | National Institute Of Advanced Industrial & Technology | 超撥水性アルミ箔及びその製造方法 |
JP5240813B2 (ja) | 2007-04-19 | 2013-07-17 | 独立行政法人産業技術総合研究所 | 金属表面微細構造の作成方法 |
JP2009109612A (ja) | 2007-10-29 | 2009-05-21 | Seiko Epson Corp | 保護コート膜の形成方法 |
-
2011
- 2011-11-14 JP JP2011249135A patent/JP5656026B2/ja not_active Expired - Fee Related
-
2012
- 2012-11-13 EP EP12192414.6A patent/EP2594343B1/fr not_active Not-in-force
Non-Patent Citations (1)
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Also Published As
Publication number | Publication date |
---|---|
EP2594343A3 (fr) | 2013-09-11 |
EP2594343A2 (fr) | 2013-05-22 |
JP5656026B2 (ja) | 2015-01-21 |
JP2013103414A (ja) | 2013-05-30 |
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