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http://hdl.handle.net/10397/94589
Title: | Rapid hybrid microwave cladding of SiO₂/TiO₂ sol–gel derived composite coatings | Authors: | Yeung, KW Chen, L Tang, CY Choy, MT Akinwekomi, AD Law, WC Tsui, GCP |
Issue Date: | Apr-2021 | Source: | Journal of sol-gel science and technology, Apr. 2021, v. 98, no. 1, p. 35-44 | Abstract: | UV protection and coatings for plastics are important in many applications. The cladding of low microwave (MW) absorption composite coatings on high MW transparent plastic substrates is a challenge due to their disparate dielectric properties. Moreover, an uneven heat energy conversion within the composite creates an additional hurdle in producing a coating with good surface integrity. In this study, a protocol was developed to overcome these difficulties based on a hybrid approach. The adverse effect of temperature mismatch between the coating and substrate was reduced through a two-way susceptor-aided heating mechanism. Low MW absorbing sol–gel derived composite coatings consisting of silicon dioxide (SiO₂) and titanium dioxide (TiO₂) were successfully cladded on the surface of MW and visual light transparent polycarbonate to produce a clear protective coating with UV-resistance. Nanoindentation tests were conducted to assess the effectiveness of the proposed protocol. Significant enhancement in the surface elastic modulus and hardness were achieved. | Keywords: | Microwave susceptor heating Nanoindentation Scratch resistance SiO2/TiO2 composite coating Sol–gel processing UV protection |
Publisher: | Springer | Journal: | Journal of sol-gel science and technology | ISSN: | 0928-0707 | DOI: | 10.1007/s10971-021-05498-x | Rights: | © The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature 2021 This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use(https://www.springernature.com/gp/open-research/policies/accepted-manuscript-terms), but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s10971-021-05498-x. |
Appears in Collections: | Journal/Magazine Article |
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Yeung_Rapid_Hybrid_Microwave.pdf | Pre-Published version | 1.05 MB | Adobe PDF | View/Open |
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