Effect of epoxy resin content and conversion rate on the compatibility and component distribution of epoxy asphalt: A MD simulation study

2022 ◽  
Vol 319 ◽  
pp. 126050
Author(s):  
Mingyue Li ◽  
Zhaohui Min ◽  
Qichang Wang ◽  
Wei Huang ◽  
Zhiyong Shi
Keyword(s):  
Epoxy Resin ◽  
Simulation Study ◽  
Conversion Rate ◽  
Md Simulation ◽  
Resin Content ◽  
Component Distribution ◽  
Epoxy Asphalt

scholarly journals Experimental Study on the Micromorphology and Strength Formation Mechanism of Epoxy Asphalt During the Curing Reaction

2020 ◽  
Vol 10 (7) ◽  
pp. 2610
Author(s):  
Wei Xu ◽  
Guoyi Zhuang ◽  
Zhengxiong Chen ◽  
Jintao Wei
Keyword(s):  
Epoxy Resin ◽  
Formation Mechanism ◽  
Conversion Rate ◽  
Laser Scanning ◽  
Laser Scanning Confocal Microscopy ◽  
Continuous Phase ◽  
Steel Bridge ◽  
Curing Reaction ◽  
Epoxy Asphalt ◽  
Epoxy Groups

The micromorphological changes and the strength formation mechanism of the curing of epoxy asphalt, which is mostly used for steel bridge deck pavements, were investigated. A tensile test was used to analyze the mechanical properties of epoxy asphalt, and Fourier transform infrared spectroscopy (FTIR) was used to determine the change in the epoxy peak area. Laser scanning confocal microscopy (LSCM) and scanning electron microscopy (SEM) were used to observe two-dimensional and three-dimensional micromorphological changes, respectively, during the curing reaction of epoxy asphalt. The results of the tensile and FTIR tests on epoxy asphalt showed that the tensile strength and epoxy conversion rate both increased with the curing time and exhibited similar trends, indicating that the network formed by the crosslinking and polymerization of epoxy groups causes the increased strength of epoxy asphalt. The curing degree of epoxy asphalt during the curing reaction can be indirectly evaluated from the conversion rate of epoxy groups. The asphalt tended to evenly be dispersed in the continuous phase of the epoxy resin during the formation of the epoxy resin network, and the network structure increased the deformation of the epoxy resin. The epoxy asphalt curing reaction process was classified into three stages based on the degree of curing.

MD Simulation Study of Ras/Raf Dissociation and the Resonating Structure of Deactivated Ras

2012 ◽  
Vol 85 (12) ◽  
pp. 1318-1328
Author(s):  
Koji Ogata ◽  
Jun-Wei Shen ◽  
Satoshi Sugawa ◽  
Shinichiro Nakamura
Keyword(s):  
Simulation Study ◽  
Md Simulation

Effects of the furan ring in epoxy resin on the thermomechanical properties of highly cross-linked epoxy networks: a molecular simulation study

RSC Advances ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 769-777 ◽  
Author(s):  
Kai Li ◽  
Ni Huo ◽  
Xinping Liu ◽  
Jue Cheng ◽  
Junying Zhang
Keyword(s):  
Epoxy Resin ◽  
Molecular Simulation ◽  
Simulation Study ◽  
Furan Ring ◽  
Van Der Waals ◽  
Thermomechanical Properties ◽  
Van Der Waals Interactions ◽  
Epoxy Network ◽  
Epoxy Networks

Higher van der Waals interactions arising from the furan ring leads to improved thermomechanical properties of a cross-linked epoxy network.

Effect of filler on thermodynamic and mechanical behaviour of asphalt mastic: a MD simulation study

2018 ◽  
Vol 21 (10) ◽  
pp. 1248-1262 ◽  
Author(s):  
Xingyi Zhu ◽  
Zhao Du ◽  
Hongwei Ling ◽  
Long Chen ◽  
Yuhong Wang
Keyword(s):  
Simulation Study ◽  
Mechanical Behaviour ◽  
Md Simulation ◽  
Asphalt Mastic

Different factors’ effect on the SWNT-fluorocarbon resin interaction: A MD simulation study

2010 ◽  
Vol 49 (1) ◽  
pp. 148-157 ◽  
Author(s):  
Jie Xie ◽  
Qingzhong Xue ◽  
Huijuan Chen ◽  
Adrian Keller ◽  
Mingdong Dong
Keyword(s):  
Simulation Study ◽  
Md Simulation

Study on Electron Beam Curing of APTES Functionalized MWNTs/ Epoxy Composites

2011 ◽  
Vol 194-196 ◽  
pp. 1607-1610
Author(s):  
Yan Yan Lu ◽  
Hua Li ◽  
He Zhou Liu
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Epoxy Resin ◽  
Conversion Rate ◽  
Epoxy Composites ◽  
Pure Epoxy ◽  
Gel Content ◽  
Electron Beam Curing ◽  
Irradiation Process

In this study, we prepared the 3-aminopropyltriethoxysilane (APTES) functionalized MWNTs/epoxy composites by electron beam (EB) irradiation process. The modified MWNTs were characterized with SEM-EDS and FTIR. The gel content and conversion rate of epoxide groups of the EB cured pure epoxy resin and the APTES functionalized MWNTs/epoxy composites were measured and discussed. And the mechanical properties of the EB cured composites were also characterized. With addition of 0.25wt% APTES functionalized MWNTs, the Vicker’s hardness of the EB cured composite increased 100.02% compared with pure epoxy.

scholarly journals Micromechanical Modeling of Flexural Strength for Epoxy Polymer Concrete

2017 ◽  
Vol 09 (08) ◽  
pp. 1750117 ◽  
Author(s):  
Dongpeng Ma ◽  
Yiping Liu ◽  
Nanli Zhang ◽  
Zhenyu Jiang ◽  
Liqun Tang ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Epoxy Resin ◽  
Epoxy Polymer ◽  
Resin Content ◽  
Micromechanical Modeling ◽  
Polymer Concrete ◽  
Flexural Performance ◽  
Micromechanics Models ◽  
Strong Adhesion ◽  
Good Agreement

Epoxy polymer concrete (EPC) has been widely used in civil engineering nowadays due to its excellent mechanical properties and advantages in processing. In this paper, a modeling study has been carried out on the flexural performance of EPC. Two classic micromechanics models, i.e. rule of mixture and Mori-Tanaka method, are introduced to predict the flexural strength of EPC with various epoxy resin contents. The comparison shows that the parallel model based on the rule of mixture attains a good agreement with the measured results when the epoxy resin content is sufficiently high to achieve strong adhesion between the aggregate and the epoxy resin. In contrast, the Mori–Tanaka method with the failure criterion dominated by the weakest phase fails to give acceptable prediction due to the unsuitability of its basic assumptions to EPC, particularly when the epoxy resin content is at relatively high levels.

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