Epoxy thermoset coatings with fine controllable hierarchical structures prepared from bio-inspired photo-/colloidal lithography technique for anticorrosion application
| Autor: | Kuan-Ying Chen, Mahmoud M. M. Ahmed, Jui-Ming Yeh, Kun-Hao Luo, Wei-Fu Ji, Yeeu-Chang Lee |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Silicon General Chemical Engineering chemistry.chemical_element Nanotechnology 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences law.invention Contact angle chemistry.chemical_compound Coating law Nano Materials Chemistry Wafer Polydimethylsiloxane Organic Chemistry Epoxy 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films chemistry visual_art engineering visual_art.visual_art_medium Photolithography 0210 nano-technology |
| Zdroj: | Progress in Organic Coatings. 152:106132 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2021.106132 |
| Popis: | Several epoxy thermoset (ET) composite coatings with artificial fine controllable micro/nano hierarchical structures were prepared through photolithography/colloidal lithography and subsequently applied in anticorrosion field. Firstly, several silicon wafers with fine controllable interspacing and width of micro-scaled cylindrical structures were fabricated through conventional photolithography. Subsequently, nano-scaled tips were fabricated upon a smooth clean surface on the previous silicon wafer with micro-scaled cylinders to generate nano-scaled tips through colloidal lithography. Moreover, ET coatings were duplicated by nano-casting technique with polydimethylsiloxane (PDMS) as a soft negative template. Surface morphology and contact angle (CA) of as-prepared hard silicon template and ET coatings were identified. The CA of water droplets on ET coating with bio-inspired micro/nano hierarchical structures (denoted by BET) was 160°, which meant that this coating was more hydrophobic than ET coatings with distinctive surface structures. Anticorrosion studies of as-prepared ET coating with/without distinctive structures showed that cold rod steel (CRS) electrode coated with BET had better anticorrosion performance than other ET coating for short- and long-term studies. This procedure of fine controllable micro/nano structure coatings opens the door for further innovative investigations of corrosion protection methods and material designs. |
| Databáze: | OpenAIRE |
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