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New combination of anti-fouling and anti-cavitation

 Last Update: 2021-04-19
 Source: Internet
 Author: User

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A new paper reports a new type of polyurethane coating with a heterogeneous structure caused by microphase separation, which has a new combination of anti-fouling and anti-cavitation.

In particular, the SFPU-5 coating with 5% FIP has excellent antifouling and cavitation erosion resistance.

Cavitation erosion and biological pollution are the most serious factors for the fatigue damage of metal materials and the degradation of seawater .
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In a new study, a series of hydrophobic fluorinated polyurethane coatings (SFPU-x) with different contents of fluorinated isocyanate prepolymer (FIP) were synthesized through a simple addition reaction to achieve resistance to cavitation erosion.
Performance and resistance to biofouling.

Nitzschia Closterium cells and fluorescently labeled bovine serum albumin (FITC-BSA) were used as a fouling model for antifouling testing.

Excellent anti-fouling and anti-cavitation erosion capabilities

In particular, the SFPU-5 coating with 5% FIP has excellent antifouling and cavitation erosion resistance due to its surface heterogeneous microstructure, and adhesion of FITC-BSA (1.

1%) and Nietzsche cells (1.
3%) The rate is much lower than that of SFPU-0 coating (72.

This research has been published in Volume 151 of "Progress in Organic Coatings" in February 2021.

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