Morphological and rheological property analysis of polyphosphoric acid modified asphalt
-
摘要: 为了研究多聚磷酸(PPA)改性沥青的宏观和微观性能,基于表面形态学与流变学原理,利用原子力显微镜(AFM)与动态剪切流变仪(DSR)对基质沥青、4%苯乙烯-丁二烯-苯乙烯(SBS)改性沥青(SBS与基质沥青的质量比)和2% PPA改性沥青(PPA与基质沥青的质量比)进行研究。利用AFM测出三种沥青的形貌图与相位图,发现:PPA改性沥青的蜜蜂结构尺寸略大于基质沥青与SBS改性沥青,PPA改性沥青的整体图像明亮度也大于基质沥青与SBS改性沥青。通过表面承载系数(Sbi)与峰密度(Sds)分析得出,PPA改性沥青硬度较高,且表面更为均一。利用DSR对上述三种沥青进行测试,通过复数剪切模量(G*)、相位角(δ)和车辙因子(G*/sin δ)三个参数分析得出,PPA改性沥青具有更好的高温抗变形能力。Abstract: To get macro and micro-properties of polyphosphoric acid (PPA) modified asphalt, pure asphalt, 4 wt% styrene-butadiene-styrene blockcopolymer (SBS) modified asphalt and 2 wt% PPA modified asphalt were test by AFM and DSR based on morphology and rheology. The topography images and phase images of three types of asphalt were obtained from AFM, in which the size of "bee-like" structrue of PPA modified asphalt is a bit larger than that of pure asphalt asphalt and SBS modified asphalt, moreover, the whole image brightness of PPA modified asphalt is higher than that of pure asphalt and SBS modified asphalt. The PPA modified asphalt shows a stiffer and more uniform surface according to surface bearing index (Sbi) and the density of summits(Sds) analysis. The complex shear modulus(G*), phase angle(δ) and rutting factor(G*/sin δ) of three types of asphalt gotten from DSR indicate that PPA modified asphalt is better to resist the transformation from high temperature than the other two types of asphalt.
-
-
期刊类型引用(8)
1. 张海红. 多聚磷酸对不同基质沥青性能的影响研究. 公路交通科技. 2024(03): 19-25 . 百度学术
2. 崔世超,郭乃胜,张军,褚召阳. 硫化杜仲胶改性沥青的微观结构及热解过程分析. 建筑材料学报. 2024(08): 720-726 . 百度学术
3. 刘涛,郭乃胜,金鑫,侯一烈,尤占平. 聚氨酯固-固相变材料改性沥青的流变性能与改性机理. 中国公路学报. 2023(01): 16-26 . 百度学术
4. 宋聪聪,张青,魏艳楠,程雅琼. 多聚磷酸改性沥青胶浆性能. 公路. 2021(04): 268-273 . 百度学术
5. 程培峰,张展铭,李艺铭. 多聚磷酸/丁苯橡胶复合改性沥青的抗紫外老化性能. 合成橡胶工业. 2020(01): 60-65 . 百度学术
6. 窦谦培,师阳. PPA掺量对多聚磷酸改性沥青性能的影响. 兰州工业学院学报. 2020(03): 24-27 . 百度学术
7. 王秋云,贾晓东. 多聚磷酸与丁苯橡胶复合改性沥青性能研究. 化工新型材料. 2020(12): 242-245+249 . 百度学术
8. 唐东,丛玉凤,赵永利,黄玮. C_9石油树脂对橡胶粉改性沥青性能的影响. 化工新型材料. 2019(10): 255-258+263 . 百度学术
其他类型引用(3)
-
计量
- 文章访问数: 1269
- HTML全文浏览量: 89
- PDF下载量: 625
- 被引次数: 11