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Article

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

1
College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China
2
Shenzhen Jinzhou Precision Technology Corp., Shenzhen 518116, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(15), 3247; https://doi.org/10.3390/ma13153247
Received: 14 June 2020 / Revised: 12 July 2020 / Accepted: 20 July 2020 / Published: 22 July 2020
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. View Full-Text
Keywords: micro ultrasonic powder molding; micro-structured pattern; replicated; core insert; wettability micro ultrasonic powder molding; micro-structured pattern; replicated; core insert; wettability
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MDPI and ACS Style

Liang, X.; Liu, Y.; Ma, J.; Gong, F.; Lou, Y.; Fu, L.; Xu, B. Fabrication of Micro Ultrasonic Powder Molding Polypropylene Part with Hydrophobic Patterned Surface. Materials 2020, 13, 3247. https://doi.org/10.3390/ma13153247

AMA Style

Liang X, Liu Y, Ma J, Gong F, Lou Y, Fu L, Xu B. Fabrication of Micro Ultrasonic Powder Molding Polypropylene Part with Hydrophobic Patterned Surface. Materials. 2020; 13(15):3247. https://doi.org/10.3390/ma13153247

Chicago/Turabian Style

Liang, Xiong, Yongjing Liu, Jiang Ma, Feng Gong, Yan Lou, Lianyu Fu, and Bin Xu. 2020. "Fabrication of Micro Ultrasonic Powder Molding Polypropylene Part with Hydrophobic Patterned Surface" Materials 13, no. 15: 3247. https://doi.org/10.3390/ma13153247

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