Influence of surface modification on physical and ultraviolet aging resistance of bitumen containing inorganic nanoparticles
Influence of surface modification on physical and ultraviolet aging resistance of bitumen containing inorganic nanoparticles
复制标题
表面改性对含无机纳米颗粒沥青物理和紫外老化性能的影响
DOI：
10.1016/j.conbuildmat.2015.08.138
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发表时间：
2015-11
影响因子：
7.4
通讯作者：
Zhang, Dongmei
中科院分区：
文献类型：
--
作者：
Zhu, Chongzheng;Yu, Jianying;Shi, Caijun;Zhang, Dongmei
采用三种无机纳米粒子(纳米二氧化硅、纳米二氧化钛、纳米氧化锌)改善沥青的紫外线老化性能。采用硅烷偶联剂对无机纳米粒子进行表面修饰。通过高温储存稳定性试验，研究了无机纳米粒子与沥青的相容性。表面改性对无机纳米颗粒改性沥青的物理老化性能和紫外线老化性能的影响受到了越来越多的关注。结果表明，经过表面改性后，无机纳米粒子与沥青的相容性得到明显改善。在相同含量的情况下，牙膏管表面改性后软化点差异明显减小，上下段纳米颗粒含量也明显减小。无机纳米颗粒的加入降低了沥青的针入度和延度，但提高了沥青的软化点和粘度。然而，这种影响在无机纳米粒子表面修饰后有所减弱，其中表面修饰的纳米氧化锌的弱化效果最为明显。由于紫外线老化，无机纳米颗粒降低了沥青的软化点增量和粘度老化指数。无机纳米粒子的表面改性进一步提高了改性沥青的抗紫外线老化性能，其中纳米氧化锌改性沥青具有最好的抗紫外线老化性能。
Three inorganic nanoparticles (nano-SiO2, nano-TiO2, nano-ZnO) were adopted to improve the ultraviolet (UV) aging properties of bitumen. Inorganic nanoparticles were surface modified by silane coupling agent. The compatibility between inorganic nanoparticles and bitumen was studied by high temperature storage stability test. More attention had been paid to the effect of surface modification on physical and UV aging properties of inorganic nanoparticles modified bitumens. The results showed that the compatibility between inorganic nanoparticles and bitumen was improved obviously by surface modification. Under the same content, the difference between the softening points as well as the nanoparticles contents in the upper and lower sections of the toothpaste tubes was decreased remarkably after surface modification. The penetration and ductility were decreased, while the softening point and viscosity of bitumen were increased with the addition of inorganic nanoparticles. However, this influence was weakened after surface modification of inorganic nanoparticles and the weakening effect of surface modified nano-ZnO was the most obvious. As a result of UV aging, softening point increment and viscosity aging index of bitumen were decreased by inorganic nanoparticles. The UV aging resistance of modified bitumen was further enhanced by surface modification of inorganic nanoparticles, and nano-ZnO modified bitumen showed the best UV aging resistance after surface modification.
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影响因子：
2
作者：
H. Zhang;J.Y. Yu;L. Xue;Z.C. Li
通讯作者：
H. Zhang;J.Y. Yu;L. Xue;Z.C. Li
影响因子：
7.4
作者：
F. Xiao;S. Amirkhanian;C. Juang;Shaowei Hu;Junan Shen
通讯作者：
F. Xiao;S. Amirkhanian;C. Juang;Shaowei Hu;Junan Shen
影响因子：
6
作者：
Polacco, Giovanni;Kriz, Pavel;Zanzotto, Ludovit
通讯作者：
Zanzotto, Ludovit
影响因子：
7.4
作者：
Feng Zhang;Changbin Hu
通讯作者：
Feng Zhang;Changbin Hu
影响因子：
1.5
作者：
Liu, C. H.;Zhang, H. L.;Zhu, C. Z.
通讯作者：
Zhu, C. Z.