| XU Li-li,SONG Zi-jian.Preparation and Mechanical Stability of Waterborne Superhydrophobic Composite Paint[J],47(2):14-19 |
| Preparation and Mechanical Stability of Waterborne Superhydrophobic Composite Paint |
| Received:September 14, 2017 Revised:February 20, 2018 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2018.02.003 |
| KeyWord:superhydrophobicity waterborne coating silica fluorocarbon resin mechanical stability |
| Author | Institution |
| XU Li-li |
Department of Materials Engineering, Mianyang Vocational and Technical College, Mianyang , China |
| SONG Zi-jian |
1.Department of Materials Engineering, Mianyang Vocational and Technical College, Mianyang , China; 2.State Key Laboratory Cultivation Base of Nonmetal Composite and Functional Materials, Southwest University of Science and Technology, Mianyang , China |
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| Abstract: |
| The work aims to achieve large-scale application of superhydrophobic surface in actual production and life by developing a waterborne superhydrophobic paint featuring in large area, low cost, designability and no organic solvent. With nanoscale fumed silica and waterborne fluorocarbon resin as main raw materials, and water as solvent, a superhydrophobic paint having self-cleaning effect was fabricated based upon fluorosilane hydrophobic modification. The paint was characterized with field emission scanning electron microscope, contact angle measuring instrument, time-lapse shooting and so on. The waterborne paint could be sprayed on various soft and hard surfaces to obtain superhydrophobic surfaces, the contact angles were all greater than 150° while rolling angles were all less than 10°. Droplet impingement experiments showed that, for the superhydrophobic paint enhanced by resin, its static contact angle was greater than 150° while its rolling angle was below 10° after continuous impingement by 600 mL droplet (total volume). After grinding with sandpaper for 40 cycles, droplets could still fall off their surface. A cheap waterborne superhydrophobic paint with water as main solvent is developed, which can be sprayed to various soft or hard substrates to obtain uniform superhydrophobic coatings. Mechanical stability of the coatings can also be effectively enhanced by adding waterborne resin. |
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