不同SBS改性沥青的性能研究  

Study on properties of different SBS modified asphalt

作　　者：刘运学[1] 郭学艳 范兆荣[1] 谷亚新[1] 谷金 万晔[1] LIU Yun-xue;GUO Xue-yan;FAN Zhao-rong;GU Ya-xin;GU Jin;WAN Ye(School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang 110168,China;China Railway 9th Bureau Group Engineering Inspection and Testing Co.,Ltd,Shenyang 110025,China)

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 [2]中铁九局集团工程检测试验有限公司,辽宁沈阳110025

出　　处：《化学研究与应用》2024年第7期1646-1651,共6页Chemical Research and Application

基　　金：辽宁省教育厅项目(LJKZ0593)资助;辽宁省“兴辽英才计划”项目(XLYC2002005)资助。

摘　　要：从研究不同分子结构的SBS与基质沥青的相容性着手,通过溶胀实验和改性后沥青性能的变化来选择适宜的沥青改性剂。首先对不同的SBS在烘箱加热条件下进行溶胀实验,从溶胀温度、时间、SBS分子结构三方面分析了其对溶胀行为的影响;其次通过物理混合的方法将四种分子结构的SBS对基质沥青进行改性,对改性沥青三大指标、红外光谱和热重分析等分别进行性能的比较探究。结果表明:当加热温度高于140℃时,溶胀行为加快;线型结构的SBS改性剂与基质沥青更容易发生溶胀;高质量分数SBS改性之后的沥青性能明显提高;线型SBS188改性之后的沥青三大指标效果较好;改性之后的热稳定性有所提高。In order to study the compatibility of different SBS with matrix asphalt,the suitable modifier was selected.Firstly,the swelling experiments of dfferent SBS were carried out under the condition of oven heating,and the effects of swelling temperature,time and SBS structure on swelling behavior were analyzed.Secondly,four SBS and matrix asphalt were modified by physical mixing method,and the three indexes,infrared spectrum and thermogravimetric analysis of modified asphalt were compared and explored re-spectively.The results show that:When the heating temperature is higher than 140°,the swelling behavior is accelerated;Linear SBS modifier and matrix asphalt are more likely to swell;The performance of asphalt modified by high concentration SBS is obvious-ly improved;The results of three indexes of asphalt modified by linear SBS188 are better;After modification,the thermal stability was improved.

关 键 词：SBS改性剂 溶胀行为 改性沥青 性能研究 

分 类 号：O647.2[理学—物理化学]