[1]邢成炜,刘黎萍,刘威.线型SBS改性沥青不同时程老化流变特征及阶段判别[J].东南大学学报(自然科学版),2019,49(2):380-387.[doi:10.3969/j.issn.1001-0505.2019.02.026]
 Xing Chengwei,Liu Liping,Liu Wei.Rheological characteristics and phase discrimination of linear SBS modified asphalt under different time aging[J].Journal of Southeast University (Natural Science Edition),2019,49(2):380-387.[doi:10.3969/j.issn.1001-0505.2019.02.026]
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线型SBS改性沥青不同时程老化流变特征及阶段判别()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第2期
页码:
380-387
栏目:
交通运输工程
出版日期:
2019-03-20

文章信息/Info

Title:
Rheological characteristics and phase discrimination of linear SBS modified asphalt under different time aging
作者:
邢成炜刘黎萍刘威
同济大学道路与交通工程教育部重点实验室, 上海 201804
Author(s):
Xing Chengwei Liu Liping Liu Wei
Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
关键词:
线型SBS改性沥青 不同老化时程 老化阶段 流变行为 官能团
Keywords:
linear styrene-butadiene-styrone block copolymers(SBS)modified asphalt different time aging aging phases rheological properties functional groups
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2019.02.026
摘要:
为探究线型SBS改性沥青老化过程中流变特性的演化与微观结构的变化机理,采用频率扫描试验、流变主曲线、多重应力蠕变回复试验(MSCR)及傅里叶变换红外光谱试验(FT-IR)分别分析线型SBS改性沥青在不同时程老化程度下多温度域的流变特性及官能团变化.研究表明,采用相位角频率扫描(75、65、55 ℃)或第一次循环Jnr3.2离散率指标,可以将线型SBS改性沥青的老化分为初期、中期、后期3个阶段,不同的阶段呈现不同的流变特征.聚丁二烯指数与线型SBS改性沥青老化初期和中期的相位角主曲线平台区临界点有较好的线性相关性.
Abstract:
To explore the evolution of rheological properties and the mechanism of microstructure change of linear styrene-butadiene-styrone block copolymers(SBS)in the aging process, the frequency sweep test, master curve and multiple stress creep recovery(MSCR)test were performed to stduy rheological properties in multiple-temperature domains at different aging time; Fourier transform infrared(FT-IR)spectroscopy was performed to study the changes of chemical functional groups. The results show that phase angle frequency sweep(75, 65 and 55 ℃)or the first cycle discrete rate of Jnr3.2 can divide linear SBS modified asphalt aging process into three phases with different rheological properties, including initial phase, middle phase and late phase. Polybutadiene(PB)index has a good linear correlation with the master curve plateaus critical frequency in the initial and middle phases of linear SBS in the modified asphalt aging process.

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备注/Memo

备注/Memo:
收稿日期: 2018-08-24.
作者简介: 邢成炜(1991—),男,博士生;刘黎萍(联系人),女,博士,教授,博士生导师,llp@tongji.edu.cn.
基金项目: 国家自然科学基金资助项目(51778483).
引用本文: 邢成炜,刘黎萍,刘威.线型SBS改性沥青不同时程老化流变特征及阶段判别[J].东南大学学报(自然科学版),2019,49(2):380-387. DOI:10.3969/j.issn.1001-0505.2019.02.026.
更新日期/Last Update: 2019-03-20