Background
Multifunctional coatings are typically made from nanoparticles of magnesium oxide (MgO) that have the ability to carbonate and serve as a permanent carbon-storage medium. The inorganic phase, consisting of MgO particles, is combined with an organic blend comprising an amine-terminated polymer. This organic component facilitates the capture and diffusion of CO2 and imparts ductility to the material, enhancing its workability and durability.
Invention Description
Researchers at Arizona State University have developed a CoolPaint, an innovative coating designed to offer multiple benefits for buildings. It incorporates alkaline mineral particles and enables on-site carbonation, which allows the capture and utilization of carbon while also reflecting solar radiation. By harnessing these properties, CoolPaint creates a “cool roof” and “cool façade” effect, which has the potential to significantly reduce the cooling energy required for buildings and mitigate urban islands.
The amine-terminated polyesters used in CoolPaint are derived from waste plastics, building upon the prior experience in incorporating waste polyethylene terephthalate (PET) in mortars. By repurposing waste plastics, CoolPaint not only contributes to carbon capture and storage but also offers an eco-friendly solution to waste management. With its unique combination of carbon capture, solar reflection, and waste utilization, CoolPaint presents a promising approach to creating sustainable and energy-efficient building coatings.
Potential Applications
- Energy-efficient buildings
- Carbon capture and storage
- Urban heat island mitigation
- Sustainable construction
Benefits and Advantages
- Avoids energy-intensive processes like absorbent regeneration and CO2 transport
- Achieves high mineral fractions without compromising workability and safety
- Maintains and strengthens coating material over time, compensating for aging