基于红外光谱的改性沥青SBS含量测定可行性分析

Feasibility Study of Determination of SBS Contain in SBS Modified Asphalt Based on FTIR

通过傅里叶红外光谱中SBS特征吸收峰强度和SBS特征吸收峰面积与基质沥青特征吸收峰面积比值分析改性沥青中SBS含量。试验结果表明,采用不同的分析参数得到的SBS含量检测结果差异较大,同一样品平行检测结果复现性差,制样的质量分数对于检测结果的影响较大。采用红外光谱只宜用于定性分析,难达到精确的定量分析。

Fourier transform infrared spectrometer(FTIR)is used to investigate SBS content in the modified asphalt based on the SBS characteristic absorption peak intensity and the ratio between SBS characteristic absorption peak and asphalt characteristic absorption peak.Test results indicate that different analysis parameters give different SBS contents.The repeatability of the same sample is poor.The concentration of sample also has a great influence.It is concluded that FTIR method can be used to detect SBS polymer qualitatively but not quantitatively.