Wonderful new automotive paint comes out: self-repair scratches after UV light

According to the British "Daily Telegraph" report, researchers in the United States have developed a special paint that can eliminate any scratches on the car surface and damage to the car paint under strong ultraviolet light irradiation. The working principle of this kind of composition is: Under the irradiation of strong light, it will temporarily "de-stick", change from solid to liquid, flow into any defect.

Scientists believe that this self-healing material can also be used to finish floors and furniture. Researchers at Case Western Reserve University in Cleveland, USA, said that unlike conventional polymers made up of long molecular chains, the new material is made up of smaller particles that are bound to each other with "molecular glue." This material is in many ways the same as conventional polymers. However, when irradiated with strong UV light, its assembly structure will be temporarily separated from the original solid material into a liquid and flow into the scratches or breakages that need to be repaired.

When the light source is turned off, the material will re-aggregate and become solid, restoring the original properties. The researchers used the dentist's violet light to repair the scratches on their polymer. Wherever the lights went, the scratches were quickly filled with liquid and disappeared, just as the wound on the skin healed quickly, leaving no trace. The tests showed that the researchers could scrape the same area repeatedly and repair it repeatedly.

Mark Brenworth, a graduate student at Case Western Reserve University, said: “We can repair these materials by heating. But by using light, we can better control it, which can ensure that we do not contact other places. Next, fix the flaw on the surface of the object.” The research results were published in the latest issue of Nature.