Preparation of fluorinated acrylate coating with high albedo and its cooling effect on asphalt mixture

被引:21
作者
Cao, Xuejuan [1 ]
Tang, Boming [2 ]
Luo, Tingyi [3 ]
Guo, Peng [1 ]
机构
[1] Chongqing Jiaotong Univ, Sch Mat Sci & Engn, Chongqing, Peoples R China
[2] Chongqing Jiaotong Univ, Sch Civil Engn & Architecture, Chongqing, Peoples R China
[3] Guangxi Transportat Res Inst, Nanning, Peoples R China
基金
中国国家自然科学基金;
关键词
fluorinated acrylate emulsion; high albedo; core-shell structure; hydrophobic performance; cooling effect; asphalt mixture; SHELL;
D O I
10.1080/14680629.2016.1165142
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
With regard to the high-temperature diseases of the asphalt pavement, an environment-friendly emulsion with high albedo was considered for reducing the pavement temperature. Firstly, the effect of types and dosage of the fluorine monomer on properties of the emulsion was analysed through using the conventional emulsion polymerisation. Afterwards, by taking the fluorine monomer as the shell and acrylic monomers as the core, the stability and hydrophobicity of the emulsion with different core-shell ratios were studied with the seed emulsion polymerisation method employed. Based on the results derived from adding different types and dosage, TiO2 to the core-shell emulsion, it can be easily found that a better cooling effect can be obtained with the optimum amount being 10% when the particle size of TiO2 concentrates on 200-1000nm. Finally, the reflectance spectrum of the coating and the cooling values of the asphalt specimen with the coating were tested, respectively. The results show that the albedo of the coating reaches 78.64% and the specimen temperature can be reduced by 13 degrees C when the normal asphalt mixture approaches 60 degrees C.
引用
收藏
页码:464 / 476
页数:13
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