This reflective paint could keep sunbaked buildings cool

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Alice Bazyar
January 28th, 2019

This reflective paint could keep sunbaked buildings cool
There is a newly made polymer-based paint that reflects almost all sunlight and can keep buildings, cars, airplanes, and/or any other sunbaked structure cool. This polymer paint can be applied to many things like plastic, wood, or metals; and it can also be turned into recyclable tarpaulins for covering homes, cars, or other closed spaces.


Scientist, Yuan Yang of Columbia University made this paint only out of water, acetone, and polymer called poly. When the applied paint dries, the evaporated acetone and water left behind a firm polymer and film riddled with air pockets. The tiny particles/polymer, reflect more than 96% of the sunlight; but other white cool-roof paints only reflected 85% of the sunlight.
a microscopic image of the polymer paint
The films porous structure also lets any heat the material does contain to escape to the air much more easily than any other solid polymer sheet, says the coauthor Nanfang Yu. In a test, a layer of this polymer paint under a clear sky during the day time in Phoenix stayed around 6 degrees Celsius cooler than the air it was surrounded by. Using this reflective polymer paint, it can help to use energy-intensive air conditioning systems more useful and reduce air-polluting coolants, as well as protection from heat waves for the people who don’t have electricity.


This paint is a great way towards our future since global warming is almost taking over the world in where such areas around are in such heat that people cannot even live around there anymore.

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