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High-gravity-assisted emulsification for continuous preparation of waterborne polyurethane nanodispersion with high solids content

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Abstract

In this work, we developed a continuous preparation strategy for the production of high-solidscontent waterborne polyurethane (WPU) emulsions via high-gravity-assisted emulsification in a rotating packed bed (RPB) reactor. By adjusting the experimental parameters and formula, WPU emulsions with a high solids content of 55% and a low viscosity were prepared. Preliminary applications of the high-solids-content WPU as a thermally insulating material were demonstrated. RPB emulsification is an economical and environmentally friendly production strategy because of the low energy consumption, short emulsification time, and effective devolatilization. This study demonstrated an effective method for preparation of high-solids-content WPU, moving toward commercialization and industrialization.

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Acknowledgements

This work was supported by the National Key Research and Development Program of China (Grant Nos. 2017YFB-0404302 and 2017YFB0404300).

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Authors and Affiliations

  1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China

    Weihong Zhang, Dan Wang, Jie-Xin Wang & Jian-Feng Chen

  2. Research Centre of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China

    Weihong Zhang, Jie-Xin Wang, Yuan Pu & Jian-Feng Chen

Authors
  1. Weihong Zhang
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  2. Dan Wang
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  3. Jie-Xin Wang
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  4. Yuan Pu
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  5. Jian-Feng Chen
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Corresponding authors

Correspondence to Dan Wang or Yuan Pu.

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Zhang, W., Wang, D., Wang, JX. et al. High-gravity-assisted emulsification for continuous preparation of waterborne polyurethane nanodispersion with high solids content. Front. Chem. Sci. Eng. 14, 1087–1099 (2020). https://doi.org/10.1007/s11705-019-1895-z

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  • DOI: https://doi.org/10.1007/s11705-019-1895-z

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