New anti-icing materials come out! Ice is no longer terrible in winter2019-01-22 17:30:58 240 ℃
Science and Technology Daily, Beijing, January 20 (intern journalist Hu Dingkun) Ice and snow disasters sometimes make people sigh and feel helpless. However, researchers at the University of Houston in the United States have recently developed a new anti-icing material, which is expected to completely solve the problem of ice formation on aircraft, cables and other surfaces. According to a paper published in International Materials Horizons by
researchers, a new physical theory called stress localization is proposed to change and predict the properties of new materials. Based on these predictions, they created a durable silicone polymer coating that prevents icing on any surface. It is not uncommon that the ice and breakage of power supply lines caused by
snow and rain disasters lead to large-scale power outages. The danger of icing goes beyond that. In February 2018, a Russian 148 passenger plane crashed because of the ice of an airspeed tube, which caused the pilots to get wrong speed information. All 65 passengers and 6 crew members were killed. It is reported that the damage caused by ice in the United States is billions of dollars every year. Hardy Gathermi, one of the main authors of the
paper, said that he had developed several new anti-icing materials before, but like other existing materials, it could not completely overcome the problem of ice adhesion on the surface, mechanical structure and environmental impact durability. Stress localization theory enables new materials to avoid this situation. According to this theory, the interface between the material and ice will produce cracks, which will cause the ice to fall off. The forces needed to create cracks are small, such as air flow on the surface of an aircraft during flight. Tests show that this material can be sprayed on any surface without changing the aerodynamic performance of the aircraft, and has stable structure and durability, and is not affected by ultraviolet light. One-time spraying can last more than 10 years. Bill Cook, author of
paper correspondence, said that the new theory pointed out a way to reduce experiments and errors in new materials research, which is consistent with the development of materials science towards a physically driven direction. Input the properties of the material you want, and the new theory will tell you what materials you need to synthesize. This concept can also be used to develop new materials with excellent antimicrobial or other properties.
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