scholarly journals Thermal decomposition kinetic study of multiwalled carbon nanotube buckypaper-reinforced poly(ether-imide) composites

2017 ◽  
Vol 32 (1) ◽  
pp. 62-75 ◽  
Author(s):  
Bruno Ribeiro ◽  
LFP Santos ◽  
AL Santos ◽  
ML Costa ◽  
EC Botelho
Keyword(s):  
Thermal Stability ◽  
Carbon Nanotube ◽  
Life Time ◽  
Strong Increase ◽  
Multiwalled Carbon ◽  
Vacuum Filtration ◽  
Degradation Temperature ◽  
Triton X ◽  
Thermal Stability Of ◽  
Filtration Technique

Poly(ether-imide) (PEI)-based composites filled with multiwalled carbon nanotubes in a dispersed form (1.0 wt%) and as buckypaper (BP) (25 wt%) have been prepared by mixing solution and hot compression molding technique, respectively. Vacuum filtration technique with the aid of water-based surfactant Triton X-100 was employed to produce BP sheets. The thermal stability of the composites was evaluated by thermogravimetric analysis and revealed a strong increase in thermal degradation temperature when BPs were used as nanofiller. Ozawa–Wall–Flyn model was used to determine the kinetic parameters. It was observed an increase in activation energy as the nanotubes concentration rise, suggesting the formation of more thermally stable systems. In addition, half-life time as function of temperature demonstrated that BP-based composites could operate for 3200 years at 200°C. These results concluded that carbon nanotube BP could contribute to improve significantly the thermal stability of PEI matrix.

Ultrahigh thermal stability of carbon encapsulated Cu nanograin on a carbon nanotube scaffold

Carbon ◽  
2021 ◽  
Vol 172 ◽  
pp. 712-719
Author(s):  
Pengyan Mao ◽  
Jixiang Qiao ◽  
Yang Zhao ◽  
Song Jiang ◽  
Kan Cui ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Carbon Nanotube ◽  
Thermal Stability Of

Metal catalyst residues in carbon nanotubes decrease the thermal stability of carbon nanotube/silicone composites

Carbon ◽  
2011 ◽  
Vol 49 (13) ◽  
pp. 4138-4148 ◽  
Author(s):  
Zhuo Li ◽  
Wei Lin ◽  
Kyoung-Sik Moon ◽  
Stewart J. Wilkins ◽  
Yagang Yao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Carbon Nanotube ◽  
Metal Catalyst ◽  
Thermal Stability Of

scholarly journals Effect of Nanodiamond Particles on Properties of Epoxy Composites

2008 ◽  
Vol 17 (1) ◽  
pp. 096369350801700 ◽  
Author(s):  
Zdeno Špitalský ◽  
Alexander Kromka ◽  
Libor Matějka ◽  
Peter Černoch ◽  
Jana Kovářová ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Epoxy Composites ◽  
Neat Epoxy ◽  
Light Transmittance ◽  
Cross Linking ◽  
Amino Groups ◽  
Multiwalled Carbon ◽  
Epoxy Network ◽  
Epoxy Nanocomposite ◽  
Thermal Stability Of

The epoxy nanocomposites filled with 0.1, 0.5, and 1 wt% nanodiamonds (nanoD) were prepared and their properties were compared with neat epoxy network or epoxy nanocomposite filled with 1 wt% multiwalled carbon nanotubes (MWCNTs). The obtained nanoD-epoxy composites increased significantly thermal stability of prepared nanocomposites in comparison with neat epoxy matrix. The exponential decay of light transmittance with increasing concentration of nanoD in sample was observed. The values of storage modulus G` and glass transition temperature Tg significantly decreased by addition of nanoD to epoxy network. This is caused by inhibition of cross-linking reaction of epoxy- and amino- groups by nanoD.

Thermal Stability of Carbon-Nanotube-Based Field Emission Diodes

2007 ◽  
Vol 111 (32) ◽  
pp. 12112-12115 ◽  
Author(s):  
Charan Masarapu ◽  
Jeong Tae Ok ◽  
Bingqing Wei
Keyword(s):  
Thermal Stability ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Thermal Stability Of

scholarly journals Rheology, Mechanical Properties, and Thermal Stability of Maleated Polyethylene Filled with Nanoclays

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Abdulhadi A. Al-Juhani
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Viscosity Data ◽  
Melt Rheology ◽  
Cross Model ◽  
Neat Polymer ◽  
Rheological Analysis ◽  
Filled Polymer ◽  
Degradation Temperature ◽  
Thermal Stability Of

Maleated polyethylene (MAPE) was used in this study as a model matrix for hosting hydrophobic nanoclay (C15A) and hydrophilic nanoclay (C30B), to investigate the effect of nanoclay loading on the bulk properties of the composites. Composites were prepared by melt-blending technique, with varying the loading from 0 to 9 wt.%. Tensile, oxidative TGA, and FE-SEM tests were employed for both C15A-filled polymer and C30B-filled polymer, which confirmed that C15A had better dispersion and was much superior to C30B for enhancing the mechanical properties and thermal stability of MAPE. Consequently, XRD and melt rheology tests were performed for C15A-filled polymer only. XRD confirmed the formation of nanocomposite structure, which could be the main reason for the significant increase in the thermal stability and viscosity. For example, compared to the neat polymer, the degradation temperature at the 20% mass loss was increased by 72°C after the addition of 5 wt.% C15A. Based on rheological analysis, the percolation threshold was around 3 wt.% loading of C15A. Fitting the viscosity data to the Cross model suggested that increasing C15A loading had a strong effect for increasing the shear thinning index and relaxation time of the nanocomposites.

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