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Sunday, 22 September 2019
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Raw materials & technologies, Raw materials, Coatings binders

Potassium silicate enhances anticorrosive effect of zinc primers

Tuesday, 25 March 2014

In a study Iranian researchers examined acrylic resin-modified potassium silicate as water-based vehicle for anticorrosive zinc-rich primers.

Researchers investigated if potassium silicate enhances the anticorrosive effect of zinc primers Sosurce: Sven Rohweder/Pixelio

Researchers investigated if potassium silicate enhances the anticorrosive effect of zinc primers Sosurce: Sven Rohweder/Pixelio

They modified the eco-friendly silicate binder of zinc-rich coating by adding water-based acrylic resin and added several series of coatings containing 5, 10, and 15 wt% of acrylic and acrylic/styrene binders to potassium silicate. The coatings were applied on steel and the corrosion resistance of coatings was evaluated by conventional methods such as electrochemical impedance spectroscopy, corrosion potential, salt spray, and scanning electron microscopy.

Shortening the curing time

The results indicated that the modification of silicate binder with acrylic and acrylic/styrene led to shortening the curing time, improved corrosion protection, better dispersion of zinc particles, and enhanced salt spray resistance of resultant coatings.

The study was published in: Journal of Applied Polymer Science, Volume 131, Issue 12, 15 June 2014.

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