A team of researchers at the University of California, American University of California devised a white paint that can reflect 98% of the sun's rays, and thus can keep the buildings cool in high temperatures.
This innovation opens the door to developing varieties of coatings that can reduce cooling costs if used to paint roofs and facades of buildings.
And the website «Phys dot org», a specialist in technology, quoted researcher Aswath Raman, assistant professor of materials science and engineering at the University of California as saying: «When you wear a white shirt on a sunny day, you feel cooler compared to wearing a dark shirt, and that Because white reflects more sunlight, and this concept also applies to buildings. ”
Raman explained that the new paint reflects the heat at the level of the wavelengths of infrared radiation, which a person cannot see with the naked eye, which allows the temperature to drop further inside the buildings.
Studies show that the best types of white paint currently present can reflect 85% of the sun's rays, while the rest of the ratio is absorbed in the chemical composition of the paint, but the new material can reflect 98% of the sun's heat.
The study team used barite and poly tetrafluoroethylene, known as "Teflon", in the manufacture of new paint instead of "titanium oxide", which is usually used in the manufacture of these materials.