负载纳米TiO_2光催化材料涂料的试验研究

Experimental Research on the Loaded Nano Titanium Dioxide Photocatalysis Materials Coating

为改善空气质量,降解大气中的NOX,采用纳米TiO2光催化材料对涂料进行改性,然后喷洒在沥青道路表面。制备分散性及稳定性良好的纳米TiO2浆料,采用高速剪切与超声波震荡相接合的方法,通过正交试验得到最佳配比。考虑到涂料喷涂在沥青表面上的特殊环境,改性涂料应具备抗滑、耐水、冻融循环及良好的附着力等性能。经过一系列测试,结果表明:3%含量的纳米TiO2具有良好的分散性,用其制备的改性涂料能和沥青很好的结合,结合后其抗滑性、耐水性、冻融循环和附着力等均优于其他含量的涂料,适用于作为沥青路面表面喷涂的负载涂料。

In order to improve the air quality and degrade NOx in the air, nano titanium dioxide photo catalysis materials were used to modify the coatings, and then were sprayed on the asphalt pavement surface. To prepare nanometer TiO2 slurry with better dispersion and stability, high-speed shear and ultrasonic shock phase together with orthogonal experiment were used to get the best ratio. Considering the special coating environment of asphalt surface, the coating should be sliding resistant and waterproof, and possess the performance of freeze-thaw cycle and good adhesion. After a series of tests, the results showed that 3% nanometer TiO2 content has a good dispersion. The modified coating with the formula can combine with asphalt very well, which showed superior performance over other coatings in slip resistance, water resistance, freeze-thaw cycle, adhesion and the like. It is therefore suitable as spray coating on asphalt pavement surface.