Fabrication of microplastic parts with a hydrophobic surface by micro ultrasonic powder moulding

Liang, Xiong; Liu, Yongjing; Chen, Sheng-gui; Ma, Jiang; Wu, Xiaoyu; Shi, Huaizhong; Fu, Lianyu

doi:10.1016/j.jmapro.2020.04.086

Cited by 14 publications

(2 citation statements)

References 22 publications

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“…In order to obtain the gas diffusion layer of the proton exchange membrane fuel cell, Guo et al [ 68 ] constructed a hydrophobic and hydrophilic synergistic surface with ultrasonic atomization spray technology. Liang et al [ 69 ] used micro-ultrasonic powder molding to fabricate micro-plastic parts with hydrophobic surfaces. The experimental results showed that the micro-plastic parts had good surface hydrophobicity (WCA = 135.4°).…”

Section: Other Non-traditional Machiningmentioning

confidence: 99%

Progress in Non-Traditional Processing for Fabricating Superhydrophobic Surfaces

Shen¹,

Ming

Ren

et al. 2021

Micromachines

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When the water droplets are on some superhydrophobic surfaces, the surface only needs to be inclined at a very small angle to make the water droplets roll off. Hence, building a superhydrophobic surface on the material substrate, especially the metal substrate, can effectively alleviate the problems of its inability to resist corrosion and easy icing during use, and it can also give it special functions such as self-cleaning, lubrication, and drag reduction. Therefore, this study reviews and summarizes the development trends in the fabrication of superhydrophobic surface materials by non-traditional processing techniques. First, the principle of the superhydrophobic surfaces fabricated by laser beam machining (LBM) is introduced, and the machining performances of the LBM process, such as femtosecond laser, picosecond laser, and nanosecond laser, for fabricating the surfaces are compared and summarized. Second, the principle and the machining performances of the electrical discharge machining (EDM), for fabricating the superhydrophobic surfaces, are reviewed and compared, respectively. Third, the machining performances to fabricate the superhydrophobic surfaces by the electrochemical machining (ECM), including electrochemical oxidation process and electrochemical reduction process, are reviewed and grouped by materials fabricated. Lastly, other non-traditional machining processes for fabricating superhydrophobic surfaces, such as ultrasonic machining (USM), water jet machining (WJM), and plasma spraying machining (PSM), are compared and summarized. Moreover, the advantage and disadvantage of the above mentioned non-traditional machining processes are discussed. Thereafter, the prospect of non-traditional machining for fabricating the desired superhydrophobic surfaces is proposed.

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Section: Other Non-traditional Machiningmentioning

confidence: 99%

Progress in Non-Traditional Processing for Fabricating Superhydrophobic Surfaces

Shen¹,

Ming

Ren

et al. 2021

Micromachines

View full text Add to dashboard Cite

show abstract

“…During micro-UPM, the heating time of polymer material is short, which avoids the degradation of the polymer. In previous research [ 29 ], the shape and size of the micro-structured parts prepared by micro-UPM are unable to be accurately controlled because the material chamber also serves as the mold cavity. This technical shortcoming limits the application of micro-UPM in the industrial field.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Micro Ultrasonic Powder Molding Polypropylene Part with Hydrophobic Patterned Surface

Liang

Liu

et al. 2020

Materials

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Constructing regular micro-structures with certain geometric characteristics on the surface of the polymer part can obtain some specific functions. Micro ultrasonic powder molding (micro-UPM) is an efficient processing technique for the fabrication of well-filled micro-structured Polypropylene (PP) parts. The micro-structure array on the surface of the core insert was obtained by low speed wire electrical discharge machining (WEDM-LS). PP polymer surfaces with micro-structured patterns were successfully replicated from the core insert surface after micro-UPM. By studying the detailed topography characterizations of micro-structured PP parts, the effects of processing parameters (ultrasonic energy, welding pressure and holding time) on the micro-structured filling show that when PP polymer was formed under the conditions of 1000 J, 115 kPa and 8 s during micro-UPM, well-filled micro-structured parts can be obtained. Besides, without low surface energy coating modification, the water contact angles (WCAs) of micro-structured PP parts increased from 85.3° to 146.8°, indicating that the wettability of the surface can be changed by replicating the micro-structure on PP parts after micro-UPM.

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Focus on Bioinspired Textured Surfaces toward Fluid Drag Reduction: Recent Progresses and Challenges

et al. 2021

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After a long period of biological evolution, natural creatures will inevitably evolve body surfaces suitable for the living environment. The functions of natural biological surfaces are abundant and powerful, including antiadhesion, self‐cleaning, drag reduction, anti‐icing, wear resistance, and other characteristics. In the context of coping with the energy crisis, inspired by natural biological surface microstructures, researchers explore biomimetic surface microstructures that reduce fluid drag and investigate the mechanisms of drag reduction. Herein, mainly the current state of research on biomimetic textured surfaces that can be applied to fluid drag reduction is reviewed and the microstructures’ morphology, drag reduction mechanisms, and the fabrication techniques of textured surfaces are discussed in detail. In particular, the experimental methods for measuring the drag reduction effect of textured surfaces are introduced, which is extremely rare. The article concludes with a summary of existing problems and future directions in the research of biomimetic surface drag reduction technology. This Review can provide a reference for practical application and laboratory research of drag reduction in marine transportation, military weapons, aviation, and pipeline systems.

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Fabrication of microplastic parts with a hydrophobic surface by micro ultrasonic powder moulding

Cited by 14 publications

References 22 publications

Progress in Non-Traditional Processing for Fabricating Superhydrophobic Surfaces

Progress in Non-Traditional Processing for Fabricating Superhydrophobic Surfaces

Fabrication of Micro Ultrasonic Powder Molding Polypropylene Part with Hydrophobic Patterned Surface

Focus on Bioinspired Textured Surfaces toward Fluid Drag Reduction: Recent Progresses and Challenges

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