期刊
MATERIALS & DESIGN
卷 86, 期 -, 页码 855-862出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2015.07.174
关键词
Contact angle; Sliding angles; Self-cleaning coatings; Erosion resistant; Dynamic hydrophobicity
资金
- Nanyang Technological University (NTU)
- CoE, NTU
- energy research institute at NTU (ERI@N)
Self-cleaning coatings are of immense importance for various technological applications. In this work, we report the formulation and characterization of erosion-resistant self-cleaning coatings. Hydroxyl-terminated polydimethyl siloxane (PDMS) was added to tetraethylorthosilicate (TEOS) based sol-gel network as a functional additive. The coatings showed a low sliding angle (less than 10 degrees) when the static water contact angle was around 112 degrees. Spectrophotometric measurement was used to quantify the self-cleaning efficiencies after subjecting the samples to artificial dirt spray and water cleaning. The effect of filler content on the self-cleaning efficiency was discussed. The mechanical properties and durability of the coatings were also studied. Based on the current work, we have successfully demonstrated the concept of self-cleaning coatings without forming superhydrophobic surfaces. (C) 2015 Elsevier Ltd. All rights reserved.
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