Ê‡|ÀÆ» ®Ì¿Z°»

(1)

mme.modares.ac.ir

*1 2

3

- 1

- 2

- 3

* 1684813114

[email protected]

: 22 1394

: 25 1394

: 01 1395

.

. .

.

. 6

Hydrophobic coating of aluminum flake particles and application of these particles to produce superhydrophobic surfaces

Nowrouz Mohammad Nouri

^*

, Mostafa Shamsi, Mohammad Saadat-Bakhsh

Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.

* P.O.B. 1684613114, Tehran, Iran, [email protected]

A RTICLE I NFORMATION A BSTRACT

Original Research Paper Received 12 January 2016 Accepted 15 March 2016 Available Online 20 April 2016

Superhydrophobic surfaces are the surfaces with self-cleaning behavior due to surface slip condition.

This property is applicable to produce drag reducing, anti-corrosive, and anti-fouling surfaces.

Superhydrophobic coatings have been vigorously researched through numerous physical and chemical approaches, including lithography, self-assembly, electrospinning, chemical vapor deposition, plasma or chemical etching, and sol gel techniques, and so forth. The large-scale fabrication of these surfaces is a challenging issue that restricts employment of these surfaces in industrial applications. Hydrophobic coating of micro/nano particles and deposition of the particles on the surface is a solution that facilitates large-scale fabrication of superhydrophobic surfaces. In this study, rotational vapor phase deposition and immersion method are used to fabricate hydrophobic aluminum flakes. Two reaction times are investigated and the results of two coating method and two particle sizes are presented. The results show that vapor phase deposition method is efficient as well as the immersion method while the latter is not cost effective. Stability test of the prepared samples showed that particle sizes are important in the vapor phase coating and the reaction time of 6 h is better than 12 h.

Keywords:

Superhydrophobic Aluminum flake Vapor phase deposition Immersion

- 1 ]

1

[ 1 .

2 3

1 Wettability

2 roughness

3 chemical composition

] [ 2 . ]

[ 3 . -

) )

.(( 1

1907 180

[ Downloaded from mme.modares.ac.ir on 2023-12-19 ]

(2)

290

Fig. 1 Schematic representation of liquid droplet in contact with a smooth solid surface (contact angle, ).

1

.

1

] [ 4 . 1923

2

] 160 [ 4 . 1953

] [ 5 . ]

[ 6 .

.

] [. 7

1990

] [ 8 . ]

[ 9 .

] [: 10

- 1

- 2

2 .

( )

] [. 11

] [ 9 . :

] [ 12 ]

3

[ 13

]

4

[ 14 ]

[ 15 ]

[ 16

1 lycopodium

2 galena

3 hydrothermal reaction

4 electrochemical deposition Fig. 2 Wetting of four surface patterns.

2

.

] [ 17 - ] [ 18 ]

[ 19

] 20 [ 21 .

. .

.

. -

.

( )

] [ 2 . AL O

. 165

] [ 9 . ] 150

[ 22 . ] [ 23

] [ 24 . .

160

] 20 [ 25 .

] [ 26 . 180

] [ 27

.

(3)

7.5 ] 10

[. 28 .

. .

.

. .

- 2

) .

) ( 99.5 ( 99.5

. .

1 . 60

2

8980

3 . 51

. 1

. 2

. .

- 2 - 1

1 60

1 : [11]

1

.

Table 1 Specifications of micro-particles, purchased from the AVL Company.

: 2

.

Table 2 Experimental design.

)

) ) )

200 12 200 12 1

200 12 200 6 2

) ( 1 Al + H O Al O . xH O + H

Al O . xH O Al

Al O . xH O H O

AlO(OH)

.

1

. 3 4

2

4

Fig. 3 Scanning electron microscopy (SEM) image of aluminum particle surface before boiling process.

3

.

1 Boehmite

2 Scanning electron microscope

- 99.7 %

5 3 m

D10

16 12 m

D50

51 35 m

D90

1.20 0.80 g/cm³

26000 19000 cm²/g

82 77 %

23 18 %

(4)

292

Fig. 4 Scanning electron microscopy (SEM) image of aluminum particle surface after boiling process.

4

OH 2 120

. 1

2

- 2 - 1 - 1

( )

1

. . 1.5

5

5 . 2

. .

.

2

± 43 0.5

± 30

. .

1.5

± 200

. 12

5

± 200 12

1 Plexiglas (Poly (methyl methacrylate) (PMMA))

- 2 - 1 - 2

- 1

. 33

0.05 2

) ( 2

=

= 0.05 = 0.033 = 1.65 mmol

= 1.273 gr

cm = 1.273 × 10 gr lit

= 149.48 gr mol

= 149.48 gr mol ×

lit

1.273 × 10 = 0.117 lit mol 1.65 mmol × 117.42 mlit

mol = 0.2 cc = 200 l 0.2

0.05

33

- 2 5

33

60

- 3 ) 200

- 4 12

- 5 - 6 12

200

12

12 200

- 2 - 2

)

2

] 106 [ 29 (

.

× 2 2

Fig. 5 Schematic of the coating chamber.

5 .

2 Polydimethylsiloxane

(5)

. 2.5

10 2

. 30 100

.

- 3

- 3 - 1 5

. 300

1

.

25 .

6

.

- 3 - 2

- 1

Fig. 6 Measuring of the static contact angle.

6

.

1 Solidworks

- 2 10

) 20 ) 10

( - 2

- 3 10

- 4 - 5 30

100

- 6 3

- 7 - 8 - 9 2

24 4

7

- 10 30

100

) - 11 - 12 - 13 4

7

- 14

. .

. 7 8

.

7 8

.

24

4 7

. 9

9 .

2 .

1

.

1

(6)

294

Fig. 7 Investigation of coated surfaces to ensure that the surface is totally covered by the aluminum particles, a surface which is not totally covered with aluminum particles.

7

Fig. 8 Investigation of coated surfaces to ensure that the surface is totally covered by the aluminum particles, a surface which is totally covered with aluminum particles.

8

Fig. 9 Water contact angle based on the stability in water.

9

.

. . .

.

) 1 ( 12

. 10 25

11

12 13

11 12

13

Fig. 10 Repeatability study of vapor phase powder type 1, 12 hours reaction.

- 10 1

12

.

Fig. 11 Scanning electron microscopy (SEM) image of the superhydrophobic surfaces produced by immersion method (powder type 1).

11 - 1

.

110 120 130 140 150 160 170

0 2 4 6 8

S ta ti c C o n ta ct A n g le ( d eg re e)

T (day)

Chemical Vapor Deposition(powder type 1-Reaction time 6h)

Immersion(powder type 1-Reaction time 12h)

145 147 149 151 153 155 157 159

0 10 20 30

S ta ti c C o n ta ct A n g le ( d eg re e)

Test

(7)

.

14 15

.

Fig. 12 Scanning electron microscopy (SEM) image of the superhydrophobic surfaces produced by Chemical Vapor Deposition (powder type 1).

12 - 1

.

Fig. 13 Scanning electron microscopy image of the superhydrophobic surfaces produced by Chemical Vapor Deposition method (powder type 2).

13 - 2

. Fig. 14 The superhydrophobic surfaces produced by immersion

method.

14

Fig. 15 The superhydrophobic surfaces produced by Chemical Vapor Deposition method.

15

- 4

.

6

- 5 C

(8)

296

day gr

h L M Psi T

MTCS

- 6

[1] Z. Yuan, J. Xiao, C. Wang, J. Zeng, S. Xing, J. Liu, Preparation of a superamphiphobic surface on a common cast iron substrate, Journal of Coatings Technology and Research, Vol. 8, No. 6, pp. 773-777, 2011.

[2] M. Jin, S. Li, J. Wang, M. Liao, Y. Zhao, Controllable fabrication of organosilane nano-architectured surfaces with tunable wettability, Applied Surface Science, Vol. 258, No. 19, pp. 7552-7555, 2012.

[3] X.-M. Li, D. Reinhoudt, M. Crego-Calama, What do we need for a superhydrophobic surface? A review on the recent progress in the preparation of superhydrophobic surfaces, Chemical Society Reviews, Vol.

36, No. 8, pp. 1350-1368, 2007.

[4] X. Zhang, F. Shi, J. Niu, Y. Jiang, Z. Wang, Superhydrophobic surfaces:

from structural control to functional application, Journal of Materials Chemistry, Vol. 18, No. 6, pp. 621-633, 2008.

[5] A. Carré, K. L. Mittal, Superhydrophobic Surfaces, First Edittion, pp. 11-12, LEIDEN, VSP/Brill, 2009.

[6] N. M. Nouri, S. Sekhavat, A. Mofidi, Drag reduction in a turbulent channel flow with hydrophobic wall, Journal of Hydrodynamics, Ser. B, Vol. 24, No.

3, pp. 458-466, 2012.

[7] Y. Liu, S. Li, J. Zhang, Y. Wang, Z. Han, L. Ren, Fabrication of biomimetic superhydrophobic surface with controlled adhesion by electrodeposition, Chemical Engineering Journal, Vol. 248, pp. 440-447, 2014.

[8] J. Song, W. Xu, X. Liu, Y. Lu, Z. Wei, L. Wu, Ultrafast fabrication of rough structures required by superhydrophobic surfaces on Al substrates using an immersion method, Chemical Engineering Journal, Vol. 211, pp. 143-152, 2012.

[9] I. Karapanagiotis, P. N. Manoudis, A. Savva, C. Panayiotou, Superhydrophobic polymer-particle composite films produced using various particle sizes, Surface and Interface Analysis, Vol. 44, No. 7, pp. 870-875, 2012.

[10] L. Feng, Y. Che, Y. Liu, X. Qiang, Y. Wang, Fabrication of superhydrophobic aluminium alloy surface with excellent corrosion resistance by a facile and environment-friendly method, Applied Surface Science, Vol. 283, pp. 367-374, 2013.

[11] B. Bhushan, Y. C. Jung, Natural and biomimetic artificial surfaces for superhydrophobicity, self-cleaning, low adhesion, and drag reduction,

Progress in Materials Science, Vol. 56, No. 1, pp. 1-108, 2011.

[12] Z. Guo, J. Fang, L. Wang, W. Liu, Fabrication of superhydrophobic copper by wet chemical reaction, Thin Solid Films, Vol. 515, No. 18, pp. 7190-7194, 2007.

[13] X. Liu, J. He, One-step hydrothermal creation of hierarchical microstructures toward superhydrophilic and superhydrophobic surfaces, Langmuir, Vol. 25, No. 19, pp. 11822-11826, 2009.

[14] X. Zhang, F. Shi, X. Yu, H. Liu, Y. Fu, Z. Wang, L. Jiang, X. Li, Polyelectrolyte multilayer as matrix for electrochemical deposition of gold clusters: toward super-hydrophobic surface, Journal of the American Chemical Society, Vol. 126, No. 10, pp. 3064-3065, 2004.

[15] N. Zhao, F. Shi, Z. Wang, X. Zhang, Combining layer-by-layer assembly with electrodeposition of silver aggregates for fabricating superhydrophobic surfaces, Langmuir, Vol. 21, No. 10, pp. 4713-4716, 2005.

[16] B. Liu, Y. He, Y. Fan, X. Wang, Fabricating super-hydrophobic lotus-leaf-like surfaces through soft-lithographic imprinting, Macromolecular rapid communications, Vol. 27, No. 21, pp. 1859-1864, 2006.

[17] M. Ma, Y. Mao, M. Gupta, K. K. Gleason, G. C. Rutledge, Superhydrophobic fabrics produced by electrospinning and chemical vapor deposition, Macromolecules, Vol. 38, No. 23, pp. 9742-9748, 2005.

[18] K. Tadanaga, J. Morinaga, A. Matsuda, T. Minami, Superhydrophobic- superhydrophilic micropatterning on flowerlike alumina coating film by the sol-gel method, Chemistry of materials, Vol. 12, No. 3, pp. 590-592, 2000.

[19] K. Acatay, E. Simsek, C. Ow-Yang, Y. Z. Menceloglu, Tunable, superhydrophobically stable polymeric surfaces by electrospinning, Angewandte Chemie International Edition, Vol. 43, No. 39, pp. 5210-5213, 2004.

[20] M. Qu, B. Zhang, S. Song, L. Chen, J. Zhang, X. Cao, Fabrication of Superhydrophobic Surfaces on Engineering Materials by a Solution-Immersion Process, Advanced Functional Materials, Vol. 17, No. 4, pp. 593-596, 2007.

[21] J. Xu, J. Xu, Y. Cao, X. Ji, Y. Yan, Fabrication of non-flaking, superhydrophobic surfaces using a one-step solution-immersion process on copper foams, Applied Surface Science, Vol. 286, pp. 220-227, 2013.

[22] J. X. Wong, H. Asanuma, H.-Z. Yu, Simple and reproducible method of preparing transparent superhydrophobic glass, Thin Solid Films, Vol. 522, pp.

159-163, 2012.

[23] N. M. Nouri, M. Saadat-Bakhsh, R. Bagheri, Robust superhydrophobic surface with polytetra luoroethylene (ptfe), micro sized aluminum particles and sio2 nano-particles,Modares Mechanical Engineering, Vol. 15, No. 11, pp. 26-32, 2015. (in Persian )

[24] C.-H. Xue, S.-T. Jia, J. Zhang, J.-Z. Ma, Large-area fabrication of superhydrophobic surfaces for practical applications: an overview, Science and Technology of Advanced Materials, Vol. 11, No. 3, pp. 033002, 2010.

[25] J. Zimmermann, G. R. Artus, S. Seeger, Superhydrophobic silicone nanofilament coatings, Journal of Adhesion Science and Technology, Vol. 22, No. 3-4, pp. 251-263, 2008.

[26] G. R. Artus, S. Seeger, Scale-up of a reaction chamber for superhydrophobic coatings based on silicone nanofilaments, Industrial & Engineering Chemistry Research, Vol. 51, No. 6, pp. 2631-2636, 2012.

[27] T. McCarthy, A perfectly hydrophobic surface, Journal of the American Chemical Society, Vol. 128, No. 28, pp. 9052-9053, 2006.

[28] S. Rezaei, I. Manoucheri, R. Moradian, B. Pourabbas, One-step chemical vapor deposition and modification of silica nanoparticles at the lowest possible temperature and superhydrophobic surface fabrication, Chemical Engineering Journal, Vol. 252, pp. 11-16, 2014.

[29]Z. He, M. Ma, X. Xu, J. Wang, F. Chen, H. Deng, K. Wang, Q. Zhang, Q. Fu, Fabrication of superhydrophobic coating via a facile and versatile method based on nanoparticle aggregates, Applied Surface Science, Vol. 258, No. 7, pp. 2544-2550, 2012.