Highly transparent and resilient urethane-methacrylate siloxane composite for hard, yet stretchable protective coating
| Autor: | Seung-Mo Kang, Junho Jang, Byeong-Soo Bae, Yun Hyeok Kim, Seungwan Kim, Seung Min Han, Hyunhwan Lee, Wonsik Kim |
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| Rok vydání: | 2022 |
| Předmět: |
Acrylate
Materials science General Chemical Engineering Organic Chemistry Composite number engineering.material Methacrylate Flexible electronics Surfaces Coatings and Films chemistry.chemical_compound chemistry Coating Siloxane Materials Chemistry engineering Composite material Prepolymer Curing (chemistry) |
| Zdroj: | Progress in Organic Coatings. 162:106567 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2021.106567 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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