Coatings Additives

CerPlus Coating Additive

CerPlus Coatings Additives use novel nanoparticle dispersions to extend the lifetime of coatings through enhanced UV protection without impacting on appearance.

Advanced UV Protection

Exposure to ultraviolet (UV) light is the major cause of degradation in polymeric coatings which are exposed to sunlight. Protection from UV damage is therefore critical for coatings to effectively serve their purpose in preventing weathering damage to the surfaces of buildings, vehicles and other assets.

Nanotechnology specialists Energenics now present an opportunity to enhance UV protection in coatings through use of its cerium oxide based nanoparticle dispersions. CerPlus Coatings Additives offer broad UV protection across a wide range of UV wavelengths, which can be tuned through chemical modification of the nanoparticles.

CerPlus technology is available in a wide range of solvents; including water, polar and non-polar solvents. It is therefore easily compatible with a wide range of coatings systems.

 

Wood panel samples after 4 years outdoor weathering (WOODLIFE project)

Wood-panels

  1. Coating with no UV absorber (Extensive chalking, coating damage, and damage to the wood substrate)
  2. Coating with commercial competitive UV absorber (Coating blistering and delamination, aesthetic and physical damage to wood substrate)
  3. Coating with CerPlus modified cerium oxide nanoparticles (Excellent protection; negligible aesthetic degradation and no damage to wood substrate)

 

Extended Lifetime

CerPlus Coatings Additives offer the advantage of extended lifetime over traditional organic UV absorbers commonly used in the coatings industry. Unlike organics, Energenics’ nanoparticles are not consumed sacrificially by exposure to UV light and are less likely to be lost through leaching, so provide protection for a longer period.

In contrast to other existing inorganic UV absorbers such as zinc and titanium oxides, cerium oxide has the advantage of very low photoactivity. Photoactive UV absorbers generate free radicals which, over time, will degrade organic materials such as resins in the coating system.

 

High Transparency

The very small particle size of the nanoparticles in CerPlus Coatings Additives give them a very large surface area to weight ratio, making them very effective for UV absorption. The small particle size also has the advantage of having no effect on the transparency of the coatings it is used in. This means that they can be used in clear as well as coloured coatings.

The availability of the technology as a stable dispersion in a wide range of solvents means that it can be readily mixed into the coating formulation without the need to handle and disperse powders.