Thermo-mechanical behavior of epoxy composites modified with reactive polyol diluent and randomly-oriented amino-functionalized multi-walled carbon nanotubes

2012 ◽  
Vol 31 (6) ◽  
pp. 777-784 ◽  
Author(s):  
Muhammad M. Rahman ◽  
Mahesh Hosur ◽  
Adriane G. Ludwick ◽  
Shaik Zainuddin ◽  
Ashok Kumar ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Mechanical Behavior ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The influence of functionalization time of carbon nanotube on the mechanical properties of the epoxy composites

2017 ◽  
Vol 51 (12) ◽  
pp. 1693-1701 ◽  
Author(s):  
EA Zakharychev ◽  
EN Razov ◽  
Yu D Semchikov ◽  
NS Zakharycheva ◽  
MA Kabina
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Carbon Nanotube ◽  
Composite Materials ◽  
Polymer Composites ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

This paper investigates the structure, length, and percentage of functional groups of multi-walled carbon nanotubes (CNT) depending on the time taken for functionalization in HNO3 and H2SO4 mixture. The carbon nanotube content and influence of functionalization time on mechanical properties of polymer composite materials based on epoxy matrix are studied. The extreme dependencies of mechanical properties of carbon nanotube functionalization time of polymer composites were established. The rise in tensile strength of obtained composites reaches 102% and elastic modulus reaches 227% as compared to that of unfilled polymer. The composites exhibited best mechanical properties by including carbon nanotube with 0.5 h functionalization time.

Impedance characterization and microwave permittivity of multi-walled carbon nanotubes/BaTiO3/epoxy composites

2020 ◽  
Vol 126 (10) ◽  
Author(s):  
Ludmila L. Vovchenko ◽  
Oleg V. Lozitsky ◽  
Ludmila Y. Matzui ◽  
Viktor V. Oliynyk ◽  
Volodymyr V. Zagorodnii ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Impedance Characterization ◽  
Microwave Permittivity

Static and Fatigue Strengths of Carbon Nanotube/Epoxy Composites under Hygrothermal Environments

2013 ◽  
Vol 284-287 ◽  
pp. 204-210
Author(s):  
Yi Ming Jen ◽  
Chien Yang Huang
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Stress Concentration ◽  
Interfacial Adhesion ◽  
Epoxy Composites ◽  
Hygrothermal Effect ◽  
Multi Walled Carbon Nanotubes ◽  
Hygrothermal Environments ◽  
Stress Concentration Effect ◽  
Walled Carbon Nanotubes

This study experimentally analyzed the hygrothermal effect on the static and fatigue strengths of acid-treated multi-walled carbon nanotubes (CNTs)/epoxy composites. The nanocomposite specimens with various CNT contents (0., 0.5, and 1.0 wt.%) were statically and fatigue-tested under three different hygrothermal conditions (25 °C/60% RH, 25° C/85% RH, and 40 °C/85% RH) to investigate the influences of hygrothermal conditions and CNT contents on the tensile static and fatigue strengths of the studied nanocomposites. The results show that the static and fatigue strengths decreased slightly at 25 °C/85% RH environments compared with those tested under the 25 °C/60% RH condition. However, the static and fatigue strengths of the studied nanocomposites decreased substantially under the 40 °C/85% RH condition. The combined temperature and humidity environments weaken the interfacial adhesion between the CNT surfaces and the epoxy matrix. Moreover, the experimental results show that the addition of 0.5 wt.% of carbon nanotubes improved the static and fatigue strengths considerably under the same hygrothermal environments. However, when an excessive amount of CNTs was used (1.0 wt.%), the nanocomposite exhibited the lowest strengths compared with the specimens with 0 and 0.5 wt.% CNTs. The stress concentration effect caused by the CNT aggregates was detrimental to the static and fatigue strengths of the studied nanocomposites.

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