Highly transparent and resilient urethane-methacrylate siloxane composite for hard, yet stretchable protective coating

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Although foldable electronic devices have been commercially available for some time now, flexible protective coating with sufficient reliability is yet to be achieved. The integration of polyurethane acrylate and an organic-inorganic (O-I) siloxane hybrid is proposed in this study as a promising protective coating, where both high strength and stretchability could be achieved to allow for the needed reliability for foldable electronics. In this work, a urethane-methacrylate siloxane hybrid (U-MSH) composite was fabricated by a physical blending of methacrylate-functionalized oligosiloxane and acrylate terminated urethane prepolymer followed by curing. The U-MSH composite demonstrates excellent performance in terms of optical (e.g., transmittance, Abbe number, UV stability) and mechanical properties (e.g., resilience under compression, tension, and scratch). These outstanding properties can be attributed to the synergetic effect of the combined polyurethane acrylate and O-I siloxane hybrid. Excellent reliability of U-MSH coating film is successfully demonstrated using an outward-bending test, suggesting that U-MSH has great potential as a protective material for flexible electronics.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2022-01
Language
English
Article Type
Article
Citation

PROGRESS IN ORGANIC COATINGS, v.162, pp.106567

ISSN
0300-9440
DOI
10.1016/j.porgcoat.2021.106567
URI
http://hdl.handle.net/10203/289256
Appears in Collection
MS-Journal Papers(저널논문)
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