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Two-component UV-curable waterborne CO2-based polyurethane dispersion with outstanding flexibility

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Abstract

A series of two-component UV-curable waterborne CO2-based polyurethane dispersions (UV-PUDs) with excellent flexibility and mechanical strength were synthesized from poly(propylene carbonate) diol (PPCD), isophorone diisocyanate (IPDI), 2,2-bis(hydroxymethyl) propionic acid (DMPA), 2-hydroxyethyl acrylate (HEA), pentaerythritol triacrylate (PETA) and 1,4-butanediol (BDO). One component was UV-curable waterborne polyurethane terminated by HEA and PETA (molar ratio 1:1), and the other component was linear waterborne polyurethane. The content of the UV-curable component in UV-PUD was 15%, 30%, 45%, 60%, and 100% (weight content). The obtained cured films exhibited superior flexibility without loss of tensile strength, accompanied by excellent acid and alkali resistance. In particular, the dried UV-PUD films without curing showed good mechanical properties.

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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, Guangdong, People’s Republic of China

    Zhu Ding, Jiahui Chen, Zonglin He, Chaozhi Wang, Hualin Li, Zhenhong Huang, Baohua Liu & Lina Song

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  1. Zhu Ding
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  2. Jiahui Chen
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  3. Zonglin He
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  4. Chaozhi Wang
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  5. Hualin Li
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  8. Lina Song
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Correspondence to Lina Song.

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Ding, Z., Chen, J., He, Z. et al. Two-component UV-curable waterborne CO2-based polyurethane dispersion with outstanding flexibility. J Coat Technol Res 20, 1569–1578 (2023). https://doi.org/10.1007/s11998-023-00763-w

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  • DOI: https://doi.org/10.1007/s11998-023-00763-w

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