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首页> 外文期刊>Coatings >Proposed Cool Coatings with High Near-Infrared Reflectance and Heat Insulation for Asphalt Pavement
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Proposed Cool Coatings with High Near-Infrared Reflectance and Heat Insulation for Asphalt Pavement

机译：提出的凉爽涂层具有高近红外反射率和沥青路面的隔热材料

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In summer, black asphalt pavement can absorb a considerable amount of solar radiation, which causes its temperature to rise. Heated asphalt pavement can aggravate the urban heat island (UHI) effect and transfer heat downward, which may cause the problem of permafrost thawing beneath pavements. The objective of this study was to develop a novel cool coating layer (CCL) with high near-infrared reflectance and heat insulation to make the surface of asphalt pavement cool. A self-developed test device and method was established to evaluate cooling effects. Based on the experimental results, the optimal coating can cool asphalt pavement by 11.21 °C when the radiation striking the sample surface is 650 W/m2. This coating, called the composite cool coating layer (CCCL), is composed of the following materials: polyurethane resin, rutile TiO2 of 18%, hollow glass microspheres of 12%, and copper chromite black spinel of 0.7%. Silicon carbide particles of 1 kg/m2 can help the CCCL achieve satisfactory antiskid performance. In conclusion, CCCL can effectively inhibit the absorption of solar radiation and reduce the flow of thermal energy downward without sacrificing skid resistance.
机译：夏季，黑色沥青路面可以吸收相当大量的太阳辐射，导致其温度升高。加热的沥青路面可以加剧城市热岛（UHI）的效果，向下传递热量，这可能导致普带冻土后面的路面下方的问题。本研究的目的是开发一种具有高近红外反射率和隔热性的新型凉爽的涂层层（CCL），以使沥青路面冷却的表面。建立了自开发的测试装置和方法以评估冷却效果。基于实验结果，当撞击样品表面的放射线为650W / m 2时，最佳涂层可通过11.21°C冷却沥青路面。该涂层称为复合冷却涂层层（CCCl），由以下材料组成：聚氨酯树脂，金红石TiO 2为18％，中空玻璃微球12％，铬铁根黑色尖晶石为0.7％。 1 kg / m2的碳化硅颗粒可以帮助CCCL实现令人满意的防滑性能。总之，CCCL可以有效地抑制太阳辐射的吸收，并在不牺牲滑动抗性的情况下向下减小热能流动。

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