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Preparation and properties of self-healing polyurethane without external stimulation

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Abstract

In this paper, a self-repairing polyurethane without external stimulation was synthesized. First, a reversible acyl hydrazone bond was introduced into the polyurethane molecular chain. The bond could be dynamically reversible under acidic stimulation to repair the material damage. After that, different contents of bis(2-ethylhexyl) phosphate components were added to modify the material in the synthesis, and its performance was compared to pure polyurethane (PU-0). The polymer was tested using digital viscometer, differential scanning calorimeter (DSC), thermogravimetric analysis (TG), tensile test, etc. The results showed that the addition of bis(2-ethylhexyl) phosphate can promote the healing of the material, so that the synthetic polyurethane material can be repaired to a certain extent without external stimulation.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 51103078).

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Authors and Affiliations

  1. Key Laboratory of Rubber-plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Shandong, 266000, People’s Republic of China

    Yu Chen, Chuanying Shi, Zhaoyang Zhang, Qi Xu, Haiqing Hu & Yanyan Wei

  2. Qingdao Bifu Macromolecules Technology Co., Ltd., Shandong, 266000, People’s Republic of China

    Yanyan Wei

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  1. Yu Chen
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  2. Chuanying Shi
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Correspondence to Yanyan Wei.

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Chen, Y., Shi, C., Zhang, Z. et al. Preparation and properties of self-healing polyurethane without external stimulation. Polym. Bull. 79, 10723–10739 (2022). https://doi.org/10.1007/s00289-022-04075-8

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  • DOI: https://doi.org/10.1007/s00289-022-04075-8

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