Facade Protection Against UV Rays Lacquer
Facade Protection Against UV Rays Lacquer containing Nanoparticles
Today it is important to protect the exterior surfaces of various equipment and parts, automobiles, and building facades against damaging environmental factors such as moisture, chemicals, dust and all types of radiation such as sunlight. One of the most important environmental destructive agents for surfaces exposed to sunlight is UV radiation. This electromagnetic radiation has shorter wavelengths and more energy than visible light and accounts for about 10% of all sunlight emitted. Today, due to increased environmental pollution and depletion of the ozone layer, UV radiation passes more through the Earth's atmosphere and destroyed more surfaces in urban life such as the exterior of buildings made of various materials like metals, ceramics, wood or polymers. This degradation can occur in the form of decay, discoloration or yellowing on the facade of the building or any other area exposed to UV radiation. One way to protect surfaces against UV radiation is to apply surface coatings. These polymer-based coatings are used seamlessly for the purpose of waterproofing and for increasing the UV resistance.
Coating of building facade made of PVC, polyethylene and MDF
The present product is a nanocrystalline polymer-based transparent lacquer, which has remarkable UV-resistance and antibacterial properties against contaminants.
The contact angle of the water drop with the coating surface in the control samples decreased after exposure to UV, indicating a degradation of the coating, whereas this angle did not change in the final sample and the coating was not damaged. Also less color change (ΔE) was observed by UV irradiation in the coated sample.
|Sample||Color changing due to UV radiation [ΔE]|