Shock and Vibration, 2015 This paper describes tests on a transition section between ballasted and ballastless tracks in the Liupanshui-Zhanyi railway in China. The originally unsettled transition zone is exposed to sudden car shaking and a series of track transition problems ...
Caiyou Zhao +3 more
doaj +1 more source
Numerical investigation of fracture behaviour of polyurethane adhesives under the influence of moisture [PDF]
arXivPolyurethane adhesives are extensively used in manufacturing of the lightweight components. These adhesives are hygroscopic in nature causing the material to degrade their mechanical properties due to ageing under environmental conditions. Polyurethane adhesive shows non-linear rate-dependent behaviour due to viscoelastic properties and assumes nearly ...
arxiv
The comparison of the healing performance of polyurethane-modified bitumen mixtures [PDF]
arXiv, 2019 Considering much distresses occurring at the surface of the asphalt roads, self-healing phenomenon attracted much attention because of reducing the road surface distresses and its benefits. The use of polymers, which are mainly used to improve the properties of asphalt mixtures, is one of the ways to increase self-healing properties.
arxiv
A review of utilization of waste polyurethane foam as lightweight aggregate in concrete
HeliyonEngineered concrete mixes using industrial waste as a construction material are an enormous step towards sustainable development and financial benefits.
R. Roobankumar, M. SenthilPandian
doaj
Modelling effects of moisture on mechanical properties of crosslinked polyurethane adhesives [PDF]
arXivCrosslinked polyurethane adhesives show large deformation viscoelastic behaviour and age under the moisture influence because of their hygroscopic behaviour. The viscoelastic behaviour of the material is modelled with the micromechanical network model.
arxiv
Anisotropic Thermal Conductivity of 3D Printed Graphene Enhanced Thermoplastic Polyurethanes Structure toward Photothermal Conversion [PDF]
arXivSolar photothermal conversion is one of the most straightforward methods to utilize solar energy. In this manuscript, a novel double-layer structure constructed of graphene enhanced thermoplastic polyurethanes (G-TPU) and neat thermoplastic polyurethanes (N-TPU) was developed via fused deposition modelling (FDM) 3D printing process. The developed G-TPU-
arxiv
Polymer TestingIn environments with high humidity or water exposure, the performance of polyurethane materials could be adversely affected by water and its penetration, which could compromise their long-term utility.
Cuixia Wang +5 more
doaj
BuildingsThe objective of this research paper is to examine the shock-absorption capabilities of sandwich structures that utilize polyurethane foam and aluminum as energy-absorbing materials.
Yong Zhang, Fenfang Yin, Junwei Ma
doaj +1 more source
Preparation of Yellowing-Resistant Waterborne Polyurethane Modified with Disulfide Bonds
MoleculesWaterborne polyurethane, renowned for its lightweight properties, excellent insulation capabilities, and corrosion resistance, has found extensive application in fields such as construction, automotive, leather, and thermal insulation.
Guorong Li +7 more
doaj +1 more source
3D Printable Plasmonic Titanium Nitride Nanoparticles Enhanced Thermoplastic Polyurethane Composite for Improved Photothermal De-Icing and Infrared Labeling [PDF]
arXivPlasmonic nanomaterials offer a direct and effective approach to harnessing solar energy. Specifically, plasmonic semiconductors enable a highly efficient light-to-heat conversion process, outperforming noble metals in stability, cost-effectiveness, and accessibility. In this study, a composite 3D printing filament (T-TPU), composed of titanium nitride
arxiv