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Hybrid Laser Ablation and Chemical Modification for Fast Fabrication of Bio-inspired super-hydrophobic Surface with Excellent Self-cleaning,Stability and Corrosion Resistance

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Journal of Bionic Engineering 2019年第1期16卷 13-26页

作者： Zhen Yang Xianping Liu Yanling Tian Key Laboratory of Mechanism Theory and Equipment Design Ministry of EducationTianjin UniversityTianjin 300350China School of Engineering University of WarwickCoventry CV4 7ALUK

Although laser ablation is considered as a facile technique to fabricate bio-inspired super-hydrophobic surfaces,the issue is that the initial laser treated metallic surfaces show super-hydrophilic *** will take a long period to reach super-hydrophobic state under ambient *** is reported that these super-hydrophobic surfaces could be easily damaged by thermal heating effect or interaction with other liquids,causing uncontrolled loss of *** this study,a stable super-hydrophobic aluminum surface was rapidly fab-ricated via the hybrid laser ablation and surface chemical modification of(heptadecafluoro-1,1,2,2-tetradecyl)triethoxysilane(AC-FAS).Surface morphology and chemistry were systematically investigated to explore the generation mechanism of *** water contact angle of the treated surfaces can reach up to 160.6°±1.5°with rolling angle of 3.0°±1.0°,exhibiting perfect self-cleaning capability,long-term stability,and excellent chemical stability in acidic as well as alkaline *** potentiodynamic polarization tests implied that the super-hydrophobic surfaces showed better anti-corrosion *** hybrid laser ablation and surface chemical modification are very time-saving and low-cost,which offers a rapid way for quantity production of super-hydrophobic surface on aluminum material.

关键词： bioinspiration nanosecond laser super-hydrophobic chemical stability corrosion resistance self-cleaning long-term stability

super-hydrophobic characteristics of butterfly wing surface

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Journal of Bionic Engineering 2004年第4期1卷 249-255页

作者： CONG Qian, CHEN Guang-hua, FANGYan , REN Lu-quan Key Laboratory for Terrain-Machine Bionics Engineering (Ministry of Education, China), Jilin University, Changchun, 130022, P. R. China 1 Key Laboratory for Terrain-Machine Bionics Engineering(Ministry of Education China) Jilin University Changchun 130022 P. R. China

Many biological surface are hydrophobic because of their complicated composition and surface microstructure. Eleven species (four families) of butterflies were selected to study their micro-, nano-structure and super-hydrophobic characteristic by means of Confocal Light Microscopy, Scanning Electron Microscopy and Contact Angle Measurement. The contact an- gles of water droplets on the butterfly wing surface were consistently measured to be about 150 ? and 100 ? with and without the squamas, respectively. The dust on the surface can be easily cleaned by moving spherical droplets when the inclining angle is larger than 3 ?. It can be concluded that the butterfly wing surface possess a super-hydrophobic, water-repellent, self-cleaning, or “Lotus-effect”characteristic. The contact angle measurement of water droplets on the wing surface with and without the squamas showed that the water-repellent characteristic is a consequence of the microstructure of the squamas. Each water droplet (diameter 2 mm) can cover about 700 squamas with a size of 40 m×80 m of each squama. The regular riblets with a width of 1000 nm to 1500 nm are clearly observed on each single squama. Such nanostructure should play a very important role in their super-hydrophobic and self-cleaning characteristic.

关键词： bionics biomimetics butterfly super-hydrophobic nanostructure self-cleaning 1

Antibacterial and Corrosion Inhibition Properties of SA-ZnO@ODA-GO@PU super-hydrophobic Coating in Circulating Cooling Water System

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China Petroleum Processing & Petrochemical Technology 2022年第1期24卷 117-128页

作者： Liu Fang Kong Can Li Wei Jiang Guofei Wang Xueyao College of Chemical Engineering China University of PetroleumQingdao 266580 State Key Laboratory of Petroleum Pollution Control Beijing 102206

In order to solve the corrosion problem of circulating cooling water system,SA-ZnO@ODA-GO@PU super-hydrophobic coating was synthesized for pipeline *** hydrophobic modification,the contact angle(CA)of the coating was above 150°.The antibacterial ability of coating was essential for corrosion ***-ZnO@ODA-GO can seriously damage the cell structure,make the cell content outflow,increase the leakage rate of protein,and make the bacteria unable to reach logarithmic growth phase within 24 *** corrosion inhibition mechanism analysis of SA-ZnO@ODA-GO@PU coating indicated that the hydrophobic coating as a physical barrier can prevent the water molecules from entering the carbon steel and prevent the surface charge transfer.

关键词： SA-ZnO@ODA-GO@PU coating super-hydrophobic antibacterial corrosion inhibition

Preparation and Properties of super-hydrophobic Surface by Fluorinated Copolymers

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复旦学报（自然科学版） 2007年第5期46卷 800-,804页

作者： Wei Haiyang, He Wenxiao, Li Xinxin, Han Zhewen(Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237,China)

1 Rusults Fig.1 Surface morphologies of the PMMA-PFAEA copolymer filmsa-e, Random copolymer, a-e, synthesized by micro emulsion polymerization,a)b), MMA:FAEA=2:1, c) d), MMA:FAEA=5:1; e) synthesized by solution polymerization, MMA:FAEA=7:3; f) Block copolymer, synthesized by RAFT polymerization, MMA:FAEA=4:1, all solution concentration 1×10-2g/mL super-hydrophobic surfaces have attracted significant attention recently, and various preparing methods have been reported. Besides these preparing methods, s...

关键词： super-hydrophobic perfluoroalkylethyl acrylate random copolymer block copolymer solvent evaporation-phase separation

Experimental research on friction-reduction with super-hydrophobic surfaces

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Journal of Marine Science and Application 2007年第3期6卷 58-61页

作者： ZHAO Jia-peng DU Xiang-dang SHI Xiu-hua College of Marine Engineering Northwestern Polytechnical University Xi＇an 710072 China

Many recent studies have confirmed the existence of liquid slip over particular types of solid surfaces, and these so-called super-hydrophobic surfaces have been shown to generate effective liquid slip because of the air trapped between the surface structures. In this paper, based on boundary layer theory, the microscopic structure of the super-hydrophobic surface is analyzed. The liquid slip effect on friction-reduction over super-hydrophobic surfaces under various flow conditions is investigated by experiments with a flume and water tunnel. The experimental results show that the greatest amount of drag-reduction that can be achieved is 8.76% at a low Re.

关键词： liquid slip super-hydrophobic boundary friction-reduction Reynolds number.

Investigation on Preparation and Anti-icing Performance of superhydrophobic Surface on Aluminum Conductor

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Chinese Journal of Chemical Physics 2018年第2期31卷 216-222,246页

作者： Hai-yun Jin Shi-chao Nie Zhi-wei Li Cheng Tong Ke-jing Wang State Key Laboratory of Electrical Insulation and Power Equipment Xi＇an Jiaotong University Xi＇an 710049 China

Aluminum is widely used in transmission lines, and the accumulation of ice on aluminum conductor may inflict serious damage such as tower collapse and power failure. In this study, super-hydrophobic surface （SHS） on alurninurn conductor with rnicro-nanostructure was fabricated using the preferential etching principle of crystal defects. The surface rnicrostructure and wettability were investigated by scanning electron microscope and contact angle measurement, respectively. The icing progress was observed with a self-made icing experiment platform at different environment temperature. The results showed that, due to jumping and rolling down of coalesced droplets from SHS of aluminum conductor at low temperature, the formation of icing on SHS could be delayed. Dynamic icing experiment indicated that SHS on aluminum conductor could restrain the formation of icing in certain temperature range, but could not exert influence on the accumulation of icing. This study offers new insight into understanding the anti-icing performance of actual aluminum conductor.

关键词： super-hydrophobic Aluminum conductor Crystal defects Self-propelledjumping Anti-icing

The Fabrication of Microstructure Surface of superhydrophobic Coating by Surface Gelation Technology

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Journal of Wuhan University of Technology(Materials Science) 2008年第2期23卷 163-165页

作者： DUAN Hui WANG Houzhi ZHAO Lei ZHAO Huizhong The Hubei Province Ministry-province Jointly-constructed Cultivation Base for State Key Lab of Refractories ＆ Ceramics Wuhan University of Science ＆ Technology Wuhan 430081 China Department of Chemistry ＆ Materials Science Naval University of Engineering Wuhan 430033 China

The microstructured surface of materials were fabricated by a two-step acid-base catalyzed sol-gel process. In fluorinated polymer with PTFE doping, the well-proportioned composite sols were prepared using sol-gel processing under the hydrochloric acid and deficiency of water conditions. After the substrate was coated by composite sols, and the gelation treatment on the surface of composite coating, the micrometer-scale and nanometer-scale hierarchical structures were formed in surface layer of material. XPS and TEM technologies were employed to identify that the gelation occurs just on the surface of composite coating. The morphology of coating surface was observed by SEM and AFM technologies. The microstructured surface of material can be fabricated using this inexpensive and easily controlled method on low surface energy resin materials, the super-hydrophobic coatings materials can be prepared.

关键词： surface gelation technology roughness contact angle super-hydrophobic

superhydrophobic diamond-coated Si nanowires for application of anti-biofouling

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Journal of Materials Science & Technology 2020年第13期47卷 1-8页

作者： Wenjing Long Haining Li Bing Yang Nan Huang Lusheng Liu Zhigang Gai Xin Jiang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Department of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China Institute of Oceanographic Instrumentation Qilu University of Technology(Shandong Academy of Sciences)Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment TechnologyNational Engineering and Technological Research Center of Marine Monitoring EquipmentQingdao266100China

The effect of the surface wettability of plasma-modified vertical Si nanowire array on the bio-fouling performance has been *** Si nanowires prepared by a metal-assisted chemical etching technique exhibit a super-hydrophilic *** treatment in CH4/H2 gas plasma environment leads to the decoration of graphite and diamond nanoparticles around Si *** detailed interface between graphite/diamond and Si nanowire was characterized by HRTEM *** surface-modified nanowire samples show an increased water contact angle with ultrananocrystalline diamond decorated ones being *** immersion test in chlorella solution reveals that the diamond-coated Si nanowires possess the least attachment of chlorella in comparison with other Si *** result confirms that the coating of Si nanowires with diamond nanoparticles shows the best behavior in ***,this work provides a method fabricated super-hydrophobic surface for the application of biofouling prevention.

关键词： Silicon nanowires Plasma treatment super-hydrophobic Diamond

Recent Advances in superhydrophobic and Antibacterial Cellulose‑Based Fibers and Fabrics:Bio‑inspiration,Strategies,and Applications

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Advanced Fiber Materials 2023年第5期5卷 1555-1591页

作者： Hua Zhou Qingshuo Li Zhong Zhang Xungai Wang Haitao Niu College of Textiles and Clothing Qingdao UniversityQingdao 266071China Collaborative Innovation Center for Eco‑Textiles of Shandong Province and the Ministry of Education Collaborative Qingdao UniversityQingdao 266071China JC STEM Lab of Sustainable Fibers and Textiles School of Fashion and TextilesThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

Cellulose-based fabrics are ubiquitous in our daily *** are the preferred choice for bedding materials,active sportswear,and next-to-skin ***,the hydrophilic and polysaccharide characteristics of cellulose materials make them vulnerable to bacterial attack and pathogen *** design of antibacterial cellulose fabrics has been a long-term and on-going *** strategies based on the construction of surface micro-/nanostructure,chemical modification,and the application of antibacterial agents have been extensively investigated by many research groups *** review systematically discusses recent research on super-hydrophobic and antibacterial cellulose fabrics,focusing on morphology construction and surface ***,natural surfaces showing liquid-repellent and antibacterial properties are introduced and the mechanisms behind are ***,the strategies for fabricating super-hydrophobic cellulose fabrics are summarized,and the contribution of the liquid-repellent function to reducing the adhesion of live bacteria and removing dead bacteria is *** studies on cellulose fabrics functionalized with super-hydrophobic and antibacterial properties are discussed in detail,and their potential applications are also ***,the challenges in achieving super-hydrophobic antibacterial cellulose fabrics are discussed,and the future research direction in this area is proposed.

关键词： Cellulose fiber super-hydrophobic Antibacterial Fabrication strategies Applications