摘要
用差示扫描量热法(DSC)对纳米二氧化硅与SBR复合改性乳化沥青蒸发残留物的热性能进行研究。结果表明,加入SBR乳液、纳米二氧化硅后样品的温度稳定性和耐高温性能均得到提高;其中SBR(质量分数0.03)加纳米二氧化硅(质量分数0.000 5)复合改性效果最佳。纳米二氧化硅与SBR形成网状结构以及SBR在体系中吸附油分后的溶胀作用是沥青性能改善的主要原因。
The thermal properties of evaporation residue of emulsion asphalt modified by nano- silica/SBR composite were investigated by DSC. The results showed that the thermal stability and resistance to elevated temperatures of the emulsion asphalt were improved when modified by nano-silica or SBR; the optimal modified composite was SBR （mass fraction 0. 03）/nano-silica （mass fraction 0. 0005）. The mainly reasons for the properties improvement of asphalt were the reticular construction of nano-silica/SBR and the swelling of the SBR after oil absorption in the system.
出处
《橡胶工业》
CAS
北大核心
2007年第6期337-340,共4页
China Rubber Industry
基金
湖南省科技计划项目(2006GK3102)
