Fabrication of Electroformed Mold Inserts with Micro-nano Structures from Hydrophobic Plant Surfaces
Xing LI1,2, Bing-yan JIANG1,2, Hui LYU1,2, Ming-yong ZHOU1,2, Can WENG1,2,*()
1 State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China 2 College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
The lower surface of bamboo leaves was adopted as a hydrophobic surface master. Regarding the characteristics of electroforming for hydrophobic surfaces, a wet-out treatment and a cathode horizontal-rotation were adopted to improve the replication quality of micro-nano hierarchical structures. The results show that the wet-out treatment can effectively improve the nickel ion deposition in the micro-nano cavities. The cathode horizontal-rotation is proved to be helpful for the better macro-and micro-qualities of electroformed nickel mold inserts. Electroforming technology with the wet-out treatment and the cathode horizontal-rotation can significantly improve the replication quality of micro-nano hierarchical structures of bamboo leaf surfaces, and can be used to successfully fabricate the hydrophobic nickel mold inserts with high quality for further molding.
YANG Z. Preparation and properties of artificial bionic superhydrophobic functional surfaces[D]. Hefei: University of Science and Technology of China, 2012.
2
ZHANG X , SHI F , NIU J , et al. Superhydrophobic surfaces:from structural control to functional application[J]. Journal of Materials Chemistry, 2008, 18 (6): 621- 633.
doi: 10.1039/B711226B
3
PARK Y M , GANG M , SEO Y H , et al. Artificial petal surface based on hierarchical micro-and nanostructures[J]. Thin Solid Films, 2011, 520 (1): 362- 367.
doi: 10.1016/j.tsf.2011.07.013
4
BARTHLOTT W , NEINHUIS C . Purity of the sacred lotus, or escape from contamination in biological surfaces[J]. Planta, 1997, 202 (1): 1- 8.
doi: 10.1007/s004250050096
5
NEINHUIS C , BARTHLOTT W . Characterization and distribution of water-repellent, self-cleaning plant surfaces[J]. Annals of Botany, 1997, 79 (6): 667- 677.
doi: 10.1006/anbo.1997.0400
6
OTTEN A , HERMINGHAUS S . How plants keep dry:a physicist's point of view[J]. Langmuir, 2004, 20 (6): 2405- 2408.
doi: 10.1021/la034961d
7
HIGGINS A M , JONES R A L . Anisotropic spinodal dewetting as a route to self-assembly of patterned surfaces[J]. Nature, 2000, 404 (6777): 476- 478.
doi: 10.1038/35006597
8
ONDA T , SHIBUICHI S , SATOH N , et al. Super water-repellent surfaces resulting from fractal structure[J]. Langmuir, 1996, 12 (9): 2125- 2127.
doi: 10.1021/la950418o
9
SUN M H , LUO C X , XU L P , et al. Artificial lotus leaf by nanocasting[J]. Langmuir, 2005, 21 (19): 8978- 8981.
doi: 10.1021/la050316q
10
ZHANG L , ZHOU Z L , CHENG B , et al. Superhydrophobic behavior of a perfluoropolyether lotus-leaf-like topography[J]. Langmuir, 2006, 22 (20): 8576- 8580.
doi: 10.1021/la061400o
11
PENG P P , KE Q P , ZHOU G , et al. Fabrication of microcavity-array superhydrophobic surfaces using an improved template method[J]. Journal of Colloid and Interface Science, 2013, 395 (2): 326- 328.
WENG C , ZHOU H H , WANG F , et al. Research progress in preparation technologies for polymer superhydrophobic surfaces[J]. Engineering Plastics Application, 2014, 42 (6): 122- 125.
XU W J , SONG J L , SUN J , et al. Progress in fabrication and application of superhydrophobic surfaces on metal substrates[J]. Journal of Materials Engineering, 2011, (5): 93- 98.
LI J , ZHAO Y H , YU H D , et al. Fabrication of coupling structure and composite properties by electro-brush plating and laser processing[J]. Journal of Materials Engineering, 2016, 44 (12): 28- 34.
doi: 10.11868/j.issn.1001-4381.2016.12.005
15
McGEOUGH J A , LEU M C , RAJURKAR K P , et al. Electroforming process and application to micro/macro manufacturing[J]. CIRP Annals-Manufacturing Technology, 2001, 50 (2): 499- 514.
doi: 10.1016/S0007-8506(07)62990-4
QIAN J G , LI P R , LI H T . Influence of bath composition on microstructure and mechanical properties of electroformed nickel[J]. Journal of Aeronautical Materials, 2014, 34 (2): 11- 16.
WANG Z , ZHOU M , TAN H , et al. The method of duplicating surface micro-structures of hydrophobic plants based on electroforming processes[J]. Plating and Finishing, 2012, 34 (11): 6- 8.
18
马鑫. 微透镜阵列模芯的电铸厚度均匀性研究[D]. 长沙: 中南大学, 2013.
18
MA X. Research on thickness uniformity of micro lensarray mold insert fabricated by electroforming[D]. Changsha: Central South University, 2013.
19
CASSIE A B D , BAXTER S . Wettability of porous surfaces[J]. Transactions of the Faraday Society, 1944, 40, 546- 551.
doi: 10.1039/tf9444000546
2018, Vol. 46 
)
