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Wednesday, 18 September 2019
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Raw materials & technologies, Raw materials, Coatings additives

Creating coatings with permanent easy-to-clean surfaces

Wednesday, 19 June 2013

Fluorinated polymers with multiple functionalities can generate hydrophobic surfaces with a permanent easy-to-clean effect in different coatings. Results of a new study confirm this.

Fluorpolymers enable permanent easy-to-clean surfaces in coatings / Source: martin schmid, Fotolia

Fluorpolymers enable permanent easy-to-clean surfaces in coatings / Source: martin schmid, Fotolia

Functional surfaces with dirt repellent properties are increasingly important as it takes less effort and surfactants to clean them. Existing easy-to-clean effect additives are based on fluorosilanes and polysiloxanes. Their application is limited to special coating systems and their effectiveness often declines with time.

The article by Carina Deschamps with co-authors, OMG Borchers, discusses the permanent easy-to-clean effect of non-ionic monomeric and polymeric fluorinated surfactants as additives in various coating systems.

The additive developed, with additional functionalities, is universal and may be crosslinked into different coating systems. The additives were tested in a range of solventborne and waterborne coating systems.

Using fluoropolymers it was possible to create hydrophobic, water-repellent, permanent easy-to-clean surfaces in coatings. The best results were obtained with the most hydrophobic modified fluoropolymer. After modification, there was permanence in the coating. In all four tested coating systems, the contact angle is high enough for the easy-to-clean effect. Similar effects were achieved in all four tested waterborne and solventborne systems with one additive, but there is no universal competitive solution.

Read the complete study "Permanent hydrophobic and easy-to-clean effect” in the upcoming issue of the European Coatings Journal.

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