首页|多聚磷酸复合SBS改性沥青的黏附特性

多聚磷酸复合SBS改性沥青的黏附特性

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
为了探究多聚磷酸复合SBS改性沥青(PPA/SBS)改性机理和黏附性能，明确基质沥青油源和PPA对其影响程度，针对不同油源基质沥青和不同浓度PPA，添加邻苯二甲酸二丁酯制备出复合PPA/SBS改性沥青，研究基质沥青类型、PPA类型和掺量对其常规路用性能的影响，由此确定PPA/SBS改性沥青制备的工艺。采用红外光谱仪(FTIR)和原子力显微镜(AFM)揭示PPA/SBS改性沥青微观结构演变过程和改性机理;借助AFM获取黏附性能表征参数定量表征PPA/SBS改性沥青黏附性能变化规律。研究结果表明:SK基质沥青与115％PPA复合制备的PPA/SBS改性沥青在PPA掺量为0。5％时性能最佳;为克服PPA对PPA/SBS改性沥青低温性能的负面影响，可在制备过程中添加增塑剂;PPA与SBS复合制备PPA/SBS改性沥青过程中出现了新的特征官能团，该过程属于化学改性;PPA可有效提升SBS改性沥青的高温稳定性和抗水损害性能，且低温性能基本与SBS改性沥青相当。
Adhesion Characteristics of Polyphosphate SBS Modified Asphalt
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.

Road engineeringPolyphosphateComposite modificationFTIR-AFMAdhesion

王永宁、李冬娜、李波、魏定邦、涂崇志、魏小龙

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兰州交通大学土木工程学院,甘肃兰州 730070

甘肃省交通规划勘察设计院股份有限公司,甘肃兰州 730030

路面工程 多聚磷酸 复合改性 FTIR-AFM联用 黏附性

国家自然科学基金项目甘肃省重点研发计划项目甘肃省科技重大专项-企业创新联合体项目企业研发机构能力建设专项项目中央引导地方科技发展资金项目甘肃省交通运输厅科研项目甘肃省交通运输厅科研项目

5186804221ZD3GA00222ZD6GA01022CX8JA09122ZY1QA0052023-332021-02

2024

10.14136/j.cnki.issn1673-2812.2024.04.006

材料科学与工程学报
浙江大学

材料科学与工程学报

CSTPCD北大核心
影响因子：0.765
ISSN：1673-2812
年,卷(期)：2024.42(4)