纳米二氧化硅与SBR复合改性乳化沥青的性能研究 |
Preparation and properties of emulsion asphalt modified by nano-silica/SBR composite |
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DOI: |
中文关键词: 纳米二氧化硅 SBR 乳化沥青 改性 差示扫描量热法 |
英文关键词: nano-silica SBR emulsion asphalt modification DSC |
基金项目:湖南省科技计划项目(2006GK3102) |
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中文摘要: |
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。 |
英文摘要: |
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 0.000 5).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. |
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