Aging resistance of polyurethane/graphene oxide composite modified asphalt: performance evaluation and molecular dynamics simulation

沥青 材料科学 复合材料 聚氨酯 蠕动 差示扫描量热法 流变学 热力学 物理
作者
Qian Wang,Ruien Yu,Lina Cai,Xiaowen Chen,Xijing Zhu,Yue Xiao,Xiaoyan Zhang,Xing Zhou,Changqing Fang
出处
期刊:Molecular Simulation [Taylor & Francis]
卷期号:49 (3): 298-313 被引量:12
标识
DOI:10.1080/08927022.2022.2159052
摘要

ABSTRACTTo evaluate the effect of polymers and nanomaterials on asphalt after thermo-oxidative aging, the aging resistance of thermoplastic polyurethane modified asphalt (PU-MA), polyurethane/graphene oxide composite modified asphalt (PU/GO-MA) were discussed through experiments and molecular dynamics (MD) simulations. The molecular composition and self-healing ability of aged asphalt were investigated. Base asphalt and virgin asphalt were used as control. The aging experiments of base asphalt, PU-MA and asphalt modified with PU and different content of GO composites were carried out by rolling thin-film oven test. The differential scanning calorimeter, thermal gravimetric analyzer, viscous flow deformation, bending beam rheometer and Fourier transform infrared spectrometer tests were carried out. The molecules and cracks models of asphalt were simulated by MD. The parameters such as mean square displacement, fractional free volume, dipole moment and viscosity were calculated. The results show that PU/GO can affect the transformation among components, increase the melting temperature of asphalt, improve the migration ability of asphalt molecules, enhance the self-healing diffusion movement of asphalt molecules and reduce the energy and viscosity of aged asphalt. In brief, nano and chemical synergistic modification has effects on the properties of asphalt after aging.KEYWORDS: Molecular dynamicspolyurethanegraphene oxidemodified asphaltshort-term aging AcknowledgementsThe authors gratefully acknowledge the financial supporting from the National Natural Science Foundation of China, China Postdoctoral Science Foundation, State Key Laboratory of Silicate Materials for Architectures, Opening Projects of State Key Laboratory of Special Functional Waterproof Materials, Applied Basic Research Project of Shanxi Province of China and Project in Scientific Innovation of Colleges and Universities of the Shanxi Province of China.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China [grant number 51902294]; China Postdoctoral Science Foundation [grant number 2020M670699]; State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology [grant number SYSJJ2020-17]; Opening Projects of State Key Laboratory of Special Functional Waterproof Materials [grant number SKWL-2021KF31]; Applied Basic Research Project of Shanxi Province of China [grant number 201901D211206]; Project in Scientific Innovation of Colleges and Universities of the Shanxi Province of China [grant number 2020L0285].
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
量子星尘发布了新的文献求助10
刚刚
YI发布了新的文献求助10
刚刚
Stardust完成签到 ,获得积分10
1秒前
zero发布了新的文献求助10
1秒前
共享精神应助果粒多采纳,获得10
2秒前
ali应助史念薇采纳,获得10
4秒前
6秒前
海城好人完成签到,获得积分10
6秒前
7秒前
默默完成签到,获得积分10
7秒前
维尼完成签到,获得积分20
7秒前
9秒前
文档发布了新的文献求助10
10秒前
10秒前
科目三应助Loik采纳,获得10
11秒前
12秒前
12秒前
14秒前
14秒前
果粒多发布了新的文献求助10
15秒前
17秒前
19秒前
李泽雄完成签到,获得积分10
20秒前
gsq发布了新的文献求助30
20秒前
momo发布了新的文献求助10
20秒前
wdy111应助学习鱼采纳,获得20
22秒前
22秒前
G哟X完成签到 ,获得积分10
23秒前
24秒前
科目三应助Zz采纳,获得10
25秒前
26秒前
zzzjh驳回了李健应助
26秒前
脑洞疼应助暴躁小龙采纳,获得10
28秒前
笑点低方盒完成签到,获得积分10
29秒前
归尘发布了新的文献求助10
29秒前
传奇3应助momo采纳,获得10
29秒前
30秒前
胡图图发布了新的文献求助10
31秒前
33秒前
蜜HHH完成签到 ,获得积分10
34秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989297
求助须知:如何正确求助?哪些是违规求助? 3531418
关于积分的说明 11253893
捐赠科研通 3270097
什么是DOI,文献DOI怎么找? 1804884
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809158