Synthesis of polyurethane coatings modified by OH-PDMS and their properties of anti-cavitation, antifouling and anticorrosion

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Authors

Wei Tian¹

1. Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University

Conference / event

Academic Conference on Marine Pollution Prevention and Corrosion Protection, June 2023 (Virtual)

Poster summary

Cavitation, biofouling, and seawater corrosion are important factors in reducing the service life of propellers and other overcurrent components of ship. Herein, OH-PDMS was introduced into polyurethane to synthesize a series of hydrophobic polyurethane coatings with cavitation erosion resistance, antifouling, and anticorrosion functions through a simple addition reaction. The addition of OH-PDMS resulted in a large number of island structures of OH-PDMS on the coating surface. The SiPU-15 with the optimum degree of microphase separation had better tensile strength (12.33 MPa), excellent hydrophobicity (contact angle of 105.3°), hydrolysis resistance (hydrolysis rate of 0.26%), and water repellency (water absorption of 2.21%). More importantly, the weight loss (7.1 mg) of SiPU-15 was much lower than that of SiPU-0 (10.0 mg) under 60 h cavitation owing to the suitable microphase structure on the surface. This work provides a heuristic perspective for the design of polymer materials with cavitation erosion resistance, antifouling, and anticorrosion.

Keywords

Polyurethane, Polydimethylsiloxane, Anti-cavitation, Antifouling, Anticorrosion

Research areas

Chemical Engineering, Mechanical Engineering, Energy Engineering

References

1. 10.1016/j.porgcoat.2023.107515

Funding

No data provided

Supplemental files

No data provided

Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

Creative Commons license

Copyright © 2023 Tian. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.