Preparation of fluorinated acrylate coating with high albedo and its cooling effect on asphalt mixture
Preparation of fluorinated acrylate coating with high albedo and its cooling effect on asphalt mixture
复制标题
高反照率氟化丙烯酸酯涂料的制备及其对沥青混合料的冷却效果
DOI：
10.1080/14680629.2016.1165142
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发表时间：
2017-03-01
影响因子：
3.7
通讯作者：
Guo, Peng
中科院分区：
文献类型：
--
作者：
Cao, Xuejuan;Tang, Boming;Guo, Peng
针对沥青路面的高温病害，研究了一种环保型高吸水性乳化液，以降低路面温度。首先采用常规乳液聚合方法，分析了氟单体的种类和用量对乳液性能的影响。然后，以氟单体为壳，丙烯酸类单体为核，采用种子乳液聚合法，研究了不同核壳比乳液的稳定性和疏水性。通过在核壳乳液中加入不同种类和用量的TiO_2，可以发现当TiO_2粒径集中在200- 1000 nm时，其最佳加入量为10%时，可以获得较好的降温效果。最后，分别测试了涂层的反射光谱和涂有涂层的沥青试件的降温值。试验结果表明，当普通沥青混合料温度接近60 ℃时，涂层的覆盖率达到78.64%，试件温度降低13 ℃。
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.