材料科学与工程学报2024，Vol.42Issue(4)：578-586,9.DOI:10.14136/j.cnki.issn1673-2812.2024.04.006
多聚磷酸复合SBS改性沥青的黏附特性
Adhesion Characteristics of Polyphosphate SBS Modified Asphalt
摘要
Abstract
An investigation of the modification mechanism and adhesion performance is explored for polyphosphoric acid (PPA) composite SBS modified asphalt(PPA/SBS).To clarify the influence of the base asphalt oil source and PPA on the adhesion of PPA/SBS,different oil source base asphalt and different concentrations of PPA,adding phthalic acid polyphosphoric acid composite SBS modified asphalt was prepared from butyl ester.The influence of the type of base asphalt,PPA type and content on its conventional road performance was studied.The preparation process of PPA/SBS modified asphalt was determined.Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM) revealed the microstructure evolution and modification mechanism of PPA/SBS modified asphalt.The adhesion performance characterization parameters were obtained by AFM to quantitatively characterize the change rule of the adhesion performance of PPA/SBS modified asphalt.The research results show that the PPA/SBS modified asphalt prepared by compounding SK base asphalt and 115％ PPA has the best performance when the PPA content is 0.5％.To overcome the negative effect of PPA on the low temperature performance of PPA/SBS modified asphalt,plasticizers can be added during the preparation process.New characteristic functional groups appear in the process of compounding PPA and SBS to prepare PPA/SBS modified asphalt,which belongs to chemical modification.PPA can effectively improve the high temperature stability and water resistance of SBS modified asphalt,and low temperature performance is basically equivalent to SBS modified asphalt.关键词
路面工程/多聚磷酸/复合改性/FTIR-AFM联用/黏附性Key words
Road engineering/Polyphosphate/Composite modification/FTIR-AFM/Adhesion分类
交通工程引用本文复制引用
王永宁,李冬娜,李波,魏定邦,涂崇志,魏小龙..多聚磷酸复合SBS改性沥青的黏附特性[J].材料科学与工程学报,2024,42(4):578-586,9.基金项目
国家自然科学基金项目(51868042) （51868042）
甘肃省重点研发计划项目(21ZD3GA002) （21ZD3GA002）
甘肃省科技重大专项-企业创新联合体项目(22ZD6GA010) （22ZD6GA010）
企业研发机构能力建设专项项目(22CX8JA091) （22CX8JA091）
中央引导地方科技发展资金项目(22ZY1QA005) （22ZY1QA005）
甘肃省交通运输厅科研项目(2023-33,2021-02) （2023-33,2021-02）
