Tag : Sunlight

    Can Sunlight Make Scratches On Car Surface Disappear?

    Car Surface Disappear
    Inam Ansari
    August8/ 2022

    Washington: When exposed to sunlight, a transparent protective coating material that can self-heal in 30 minutes has been created, according to a recent study. The findings of the research were published in the journal 'ACS Applied Polymer Materials'. The excellent durability of automotive coatings is the most important issue in protecting a vehicle surface. In addition, protective coating materials should be colourless and transparent so that the original colour of the product can be seen. However, it is difficult to provide a self-healing function while satisfying all of these conditions. Materials with the free molecular movement have high self-healing efficiency, but have low durability, whereas materials with high hardness and excellent durability have remarkably poor self-healing performance. The research team of Dr Jin Chul Kim, Dr Young il Park and Dr Ji-Eun Jeong of the Korea Research Institute of Chemical Technology (KRICT) has developed a transparent coating material that satisfies all of the above conditions and has similar performance to that of commercial protective coating materials and can be self-healed with only sunlight (Particularly near-infrared light in sunlight, in the wavelength range of 1,000 to 1,100 nm). Using the developed self-healing protective material, surface scratches can be healed in 30 minutes when exposed to sunlight. To demonstrate the self-healing performance of the developed coating material, the research team coated a laboratory-scale model car using a spray-coating machine. When the model car was exposed to midday sunlight for about 30 minutes, the scratch completely disappeared and the surface of the coating material was restored. Principle of the self-healing phenomenon: When sunlight i ...

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