Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Technologies  > Considering the effect of graphene loading...

Wednesday, 18 September 2019
pdf
Raw materials & technologies, Technologies

Considering the effect of graphene loading in water-based epoxy coatings

Thursday, 4 October 2018

In a recently published paper, researchers investigated the effect of graphene as a potential additive for anticorrosive organic coatings.

The scientists added low levels of graphene nanosheets to an additive-free waterborne epoxy resin applied to Al2024-T3 aluminum alloy samples. Source: psdesign1 – stock.adobe.com.
The scientists added low levels of graphene nanosheets to an additive-free waterborne epoxy resin applied to Al2024-T3 aluminum alloy samples. Sour...

Recently, graphene has gained increasing interest in numerous fields of application and, in particular, it has been used as a nanofiller in the preparation of polymeric composites to improve their mechanical and transport properties. However, the effect of graphene as a potential additive for anticorrosive organic coatings is not widely studied. In a new work, low levels of graphene nanosheets, 0.5 and 1 wt%, were added to an additive-free waterborne epoxy resin applied to Al2024-T3 aluminum alloy samples.

Improvement of the protective properties

The presence of graphene did not affect the polymerisation process of the resin and the adhesion at coating/substrate interface, as demonstrated by experimental results, while showing a slight effect on coatings wettability. Electrochemical analysis revealed an improvement of the protective properties of the coating that could be assigned to a slow absorption rate of the electrolytes in the polymeric matrix and a lesser amount of absorbed water than the unloaded film.

The Study is published in: Journal of Coatings Technology and Research  September 2018, Volume 15, Issue 5, pp 923–931.

Event tip

If you want to learn how corrosion occurs, what types of corrosion are out there and how coatings can prevent it, you should visit the European Coatings Seminar Anticorrosive Coatings in November 2018.

top of page
Comments (0)
Add Comment

Post comment

You are not logged in

register