Creep behavior of polyurethane nanocomposites with carbon nanotubes

The polyurethane (PU) nanocomposites containing carbon nanotubes (CNTs) were prepared through in situ polymerization for the creep study. The results show that the presence of CNTs leads to a significant improvement of creep resistance of PU. However, this creep resistance does not increase monotono...

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Bibliographic Details
Published inComposites. Part A, Applied science and manufacturing Vol. 50; pp. 65 - 72
Main Authors Yao, Zhen, Wu, Defeng, Chen, Chong, Zhang, Ming
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.07.2013
Elsevier
Subjects
A. Polymer–matrix composites (PMCs)
Applied sciences
B. Creep
C. Analytical modeling
Composites
D. Mechanical testing
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
B. Creep
A. Polymer–matrix composites (PMCs)
D. Mechanical testing
C. Analytical modeling
Dispersion degree
A. Polymer―matrix composites (PMCs)
Carbon nanotubes
Vegetable oil
Creep strength
Experimental study
Modeling
Polyaddition
Composite material
Tensile stress
Multiwalled nanotube
Castor oil
Preparation
Polyurethane
Concentration effect
Numerical simulation
Restoration creep
Nanocomposite
Temperature time superposition
Rheological properties
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Summary:The polyurethane (PU) nanocomposites containing carbon nanotubes (CNTs) were prepared through in situ polymerization for the creep study. The results show that the presence of CNTs leads to a significant improvement of creep resistance of PU. However, this creep resistance does not increase monotonously with increase of CNT contents because it is highly dependent on the dispersion of CNTs. Several theoretical models were then used to establish the relations between CNT dispersion and final creep and creep–recovery behaviors of nanocomposites. The as-obtained viscoelastic and viscoplastic parameters of PU matrix and structural parameters of CNTs further confirmed the retardation effect by CNTs during creep of the nanocomposite systems. Besides, the time–temperature superposition (TTS) principle was also employed in this work to make a further evaluation on the creep of PU/CNT nanocomposites with long-term time scale.
ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2013.03.015