摘要
为有效检测沥青中SBS(Styrene-Butadiene-Styrene Copolymer)含量,提出了一种基于红外光谱法测定改性沥青SBS含量的方法。该方法对比分析SBS改性剂和基质沥青红外光谱,确定SBS改性剂特征峰966成为定量测定沥青SBS的关键点,引入复化辛普生求积公式求吸收峰峰面积;依据朗伯-比耳定律,通过最小二乘法拟合出峰面积比与SBS含量之间关系的标准曲线。最后用辽河石化70#基质沥青制备不同SBS含量的改性沥青,最终校正样本和测试样本测定的SBS含量平均误差分别是0.14%、0.02%。实验结果表明,该方法相比原有凝胶渗透色谱等试验测定方法具有速度快、精度高、易操做等特点,为今后道路建设工程中及时检测沥青SBS含量提供一种科学有效的方法。
In order to effectively detect the SBS （Styrene-Butadiene-Styrene Copolymer）content in modified asphalt, an improved method based onlnfrared spectroscopy is presented. By comparing the SBS modifier＇ sspectroscopyandmatrix asphalt＇s spectroscopy, the characteristic absorbance peak at 966 of SBS modifier is used to detect the SBS content. Compound Simpson formula is introduced to calculate the peak area. Then, according to Lambert-Beer＇s law, the standard curve of the relationship between peak area ratio and SBS content are obtained by least square method. Finally, modified asphalt with different SBS contents are prepared from 70# matrix asphalt of Liao He Petrochemical Company. The average error of calibration samples and test samples is 0.14% and 0.02% respectively. The results show that the proposed method has the advantages of fast speed, high precision and easy operation compared with the original methods such as GPC. It provides a scientific and effective method for timely detection of asphalt SBS content in road construction projects in the future.
作者
陈志国
秦卫军
卓瑞
田冰
钟涛
CHEN Zhiguo;QIN Weijun;ZHUO Rui;TIAN Bing;ZHONG Tao(Technological Achievement Transformation Center,Jilin Province Institute of Transportation Science,Changchun 130022,China;College of Transportation,Jilin University,Changchun 130022,China)
出处
《吉林大学学报（信息科学版）》
CAS
2018年第5期497-503,共7页
Journal of Jilin University（Information Science Edition）
基金
吉林省交通运输科技计划基金资助项目(2016-1-2)
关键词
SBS改性剂
基质沥青
红外光谱
复化辛普生求积
最小二乘法
styrene-butadiene-styrene （ SBS ） copolymer modifier
matrix asphalt
infrared spectroscopy
compound simpson formula
least square method
作者简介
陈志国（1965-），男，长春人，吉林省交通科技研究所研究员，主要从事道路结构理论与材料研究，（Tel）86431-86026005（E-mail）1367087060@qq．com；;通讯作者：秦卫军（1981-），男，山东菏泽人，吉林省交通科技研究所高级工程师，主要从事道路新材料及检测新技术研究及新技术推广研究，（Tel）86-13009130078（E-mail）65311621@qq．com。
