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Thermal and mechanical properties of UV-cured acrylated hyperbranched polyester and its blends with linear polyurethane acrylate

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Journal of Coatings Technology

Summary

An acrylated hyperbranched polyester was synthesized based on a hyperbranched aliphatic polyester with hydroxyl end-groups by modifying with acryloyl chloride. Approximately 78% of the substitution degree was obtained from1H NMR and VPO measurements.

With the addition of HBP20-A, the Tg and Ts of UV-cured CN972 shifted upward, and the network homogeneity of UV-cured CN972 was reduced. Moreover, thermal stability heated over 310°C, the pendulum hardness, pencil hardness, and tensile strength of UV-cured CN972 were obviously improved by the addition of HBP20-A. However, the thermal degradation temperature of CN972 decreased slightly with the increase of HBP20-A content.

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Authors and Affiliations

  1. University of Science and Technology of China, China

    Wei Huanyu, Kou Huiguang & Shi Wenfang

  2. Anhui University, China

    Nie Kangming & Shen Xiaofeng

Authors
  1. Wei Huanyu
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  2. Kou Huiguang
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  3. Shi Wenfang
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  4. Nie Kangming
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  5. Shen Xiaofeng
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Additional information

State Key Laboratory of Fire Science and Department of Applied Chemistry, Hefei, Anhui, 230026, People’s Republic of China.

Institute of Chemical Engineering, Hefei, Anhui 230039, People’s Republic of China.

Granted by National Natural Science Foundation of China (No. 50233030 and 20074034)

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Huanyu, W., Huiguang, K., Wenfang, S. et al. Thermal and mechanical properties of UV-cured acrylated hyperbranched polyester and its blends with linear polyurethane acrylate. Journal of Coatings Technology 75, 37–40 (2003). https://doi.org/10.1007/BF02697919

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  • DOI: https://doi.org/10.1007/BF02697919

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