Created with Sketch.

4. Sep 2020 | Coatings Technologies

Improving thermal conductivity and corrosion resistance of polyurea coating

A new study describes an improved thermal conductivity and corrosion resistance of a polyurea coating on internal tubes of gas heater by nano silver.

A heating pipe with thermometer.

Physical and chemical properties of the Ag-NPs in the polyurea matrix provide high performance coating for using in the gas heaters. Image source: Pixabay - USA Reiseblogger (symbol image).

In a present work, an experimental setup was used to evaluate the effect of adding silver nanoparticles (Ag-NPs) to a polyurea coating on the heat transfer behavior of the coated steel tubes inside gas heaters. Moreover the protective properties of the pure polyurea and the polyurea containing different concentrations of the Ag-NPs were studied by electrochemical impedance spectroscopy (EIS) during 42 days. The results indicated that the heat transfer rate improves considerably by adding Ag-NPs to the polyurea coating.

High performance coating

The thermal evaluations demonstrated the polyurea coating containing 2 wt. % Ag-NPs indicates the ideal thermal performance in comparison with the bare steel pipe. Moreover, the EIS results revealed the corrosion behavior of the coating improves by adding Ag-NPs. In comparison with the pure polyurea, the presence of 2 wt. % Ag-NPs in the coating improves the coating resistance 1.7 times. The physical and chemical properties of the Ag-NPs in the polyurea matrix provide high performance coating for using in the gas heaters.

The study has been published in Progress in Organic Coatings, Volume 146, September 2020.

Image source: Pixabay.

Additives for water-borne coatings


Additives for Water-borne Coatings

Water-borne systems are the coatings of the future. The market is developing an insatiable appetite for ecologically sound coatings based on renewable raw materials. The demands on coating performance are at least as high as those on environmental compatibility. Additives help to protect the environment by effectively reducing the use of organic solvents. Many of today’s water-borne coatings could not be formulated without them. When incorporated into water-borne paints, coatings and printing inks, they enhance both the production process and the performance of the applied inks and coating materials. Additives for water-borne coatings is a must read for formulators wishing to brush up on water-borne coating systems, as well as experts seeking to have detailed knowledge at their finger tips.

This could also be interesting for you!


You are currently not logged in

To leave a comment, please log in.

For continuously improving and optimizing our websites, we use cookies. By using our website, you agree to the usage of cookies. For more information, please visit our Privacy policy.