ATR-FTIR法测定改性沥青中橡胶含量  

Determination of Rubber Content in Modified Asphalt with ATR-FTIR

作　　者：李硕[1] 吴晓羽[1] 姚鸿儒[1] 王仕峰[1] 

机构地区：[1]上海交通大学高分子材料研究所,上海200240

出　　处：《石油沥青》2015年第5期68-72,共5页Petroleum Asphalt

基　　金：国家自然科学基金项目(51273110)

摘　　要：苯乙烯—丁二烯—苯乙烯三嵌段共聚物(SBS)或废旧轮胎胶粉等橡胶材料大量用于改善高等级沥青路面性能,为保证工程质量,准确测定改性沥青中橡胶的含量十分必要。利用衰减全反射傅里叶变换红外光谱分析法(ATR-FTIR)对基质沥青、SBS改性沥青、胶粉改性沥青及其SBS/胶粉复合改性沥青进行分析,建立了改性沥青中SBS、胶粉含量的特征吸收峰强度的标准曲线,进而得到改性沥青中橡胶的含量。结果表明,该方法可用于SBS、SBS/胶粉复合改性沥青中橡胶含量的测定。SBS or ground tire rubber powder and other rubber materials are widely used in improving pavement performance of high - grade asphalt. It is necessary to accurately measure the content of rubber in the modified asphalt so as to ensure project quality. Matrix asphalt, SBS modified asphalt, crumb rubber modified asphalt and composite modified asphalt were tested by Attenuated Total Reflection - Fourier Transform In- frared Spectrometry （ ATR - FTIR） . The standard curves were established indicating the intensity of charac- teristic absorption peak of SBS content and crumb rubber content in the modified asphalt. Therefore the rubber content in modified asphalt was calculated. The results indicated that the test method was available to measuring rubber content in SBS and composite modified asphalt.

关 键 词：改性沥青 红外光谱 标准曲线 SBS 胶粉 

分 类 号：U414[交通运输工程—道路与铁道工程]