【作者】 李平； 翟龙； 张春喜； 张亚飞；

【Author】 LI Ping;ZHAI Long;ZHANG Chunxi;ZHANG Yafei;School of Traffic and Transportation Engineering,Changsha University of Science and Technology;Key Laboratory of Road Structure and Material of Guangxi Province,Guangxi Transportation Research Institute;

【机构】 长沙理工大学交通运输工程学院； 广西交通科学研究院广西道路结构与材料重点实验室；

【摘要】 为掌握纳米TiO₂涂层降解NO实际使用效果,建立了一套尾气降解效果室内评价方法,通过降解试验研究了载体粘结剂、分散方案、纳米TiO₂掺量及磨耗作用对涂层NO降解效果的影响,并采用摆值和构造深度试验对涂层抗滑性能进行了研究。发现纳米TiO₂颗粒能有效加速NO的降解,但载体粘结剂中基料成分对其降解效果有不利影响;涂层制备时采用合理的剪切速率、剪切时间及纳米TiO₂掺量能改善其NO降解效果;纳米TiO₂涂层对沥青路面抗滑性能有不利影响,但添加金刚砂能使其恢复至初始水平,且对其NO降解效果影响不大;纳米TiO₂涂层NO降解的使用耐久性较好,但抗滑耐久性较差。更多还原

【Abstract】 In order to master the practical degradation character of nano-TiO₂ coating on NO of automobile exhaust,an evaluation method was established,and the effect of carrier adhesive,dispersing method,content of nano-TiO₂ and abrasion of traffic was studied on the degradation efficiency of NO.The results show that nano-TiO₂ can effectively accelerate the degradation efficiency of NO,however,the base composition of carrier adhesive has an adverse effect on the degradation.Using reasonable shear rate,shear time and the content of nano-TiO₂ can improve the degradation efficiency of NO.Nano-TiO₂ coating has an adverse effect on the antislide performance of asphalt pavement,but add emery can make it back to its initial level,and it has little effect on the degradation efficiency of NO.Nano-TiO₂ coating has better durability on the degradation of NO,however its durability on anti-slide performance is poor.更多还原