scholarly journals Tensile Strength of Spinnable Multiwall Carbon Nanotubes

2011 ◽  
Vol 10 ◽  
pp. 2572-2578 ◽  
Author(s):  
N. Khandoker ◽  
S.C. Hawkins ◽  
R. Ibrahim ◽  
C.P. Huynh ◽  
F. Deng
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon

scholarly journals The Effect of High Loaded Multiwall Carbon Nanotubes in Natural Rubber and Their Nonlinear Material Constants

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Natarajan Elango ◽  
N. Srinivasa Gupta ◽  
Yu Lih Jiun ◽  
Alireza Golshahr
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Multiwall Carbon Nanotubes ◽  
Nonlinear Material ◽  
Rubber Matrix ◽  
High Dispersion ◽  
Elongation At Break ◽  
Material Constants ◽  
Multiwall Carbon

The aim of this paper is to study the high load of multiwall carbon nanotubes (MWCNTs) in natural rubber (NR) matrix. Firstly, the rubber matrix, fillers, and crosslinker are thoroughly mixed together in two-roll mill. Rheological tests are done from which scorch time, cure time, and cure index are estimated. The kneaded mixer is then compression molded, dumb bell samples as per ASTM D412 are prepared, and tensile strength, tensile modulus, elongation at break, and hardness are measured. It is noticed that NR/30% MWCNT has shown the highest tensile strength of 23.38 MPa and Shore A hardness of 90, which is 78.18% and 91.5%, respectively, higher than the unfilled NR. The increase in strength and hardness, the ductility loss, and decrease in elongation at break are observed upon increase in filler. FTIR, SEM, and AFM examinations are done and the results show high dispersion of nanofillers and strong interfacial interaction with rubber, which is responsible for overall enhancement in mechanical properties of the nanocomposites. Furthermore, the nonlinear material constants are evaluated through extended tube model and corresponding nonlinear material constants of different filler compositions are presented for the designers to use them in their component design and analysis.

scholarly journals Modification of Polylactide Nonwovens with Carbon Nanotubes and Ladder Poly(silsesquioxane)

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1353
Author(s):  
Mariia Svyntkivska ◽  
Tomasz Makowski ◽  
Ewa Piorkowska ◽  
Marek Brzezinski ◽  
Agata Herc ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Polymer Solution ◽  
Maximum Stress ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon

Electrospun nonwovens of poly(L-lactide) (PLLA) modified with multiwall carbon nanotubes (MWCNT) and linear ladder-like poly(silsesquioxane) with methoxycarbonyl side groups (LPSQ-COOMe) were obtained. MWCNT and LPSQ-COOMe were added to the polymer solution before the electrospinning. In addition, nonwovens of PLLA grafted to modified MWCNT were electrospun. All modified nonwovens exhibited higher tensile strength than the neat PLA nonwoven. The addition of 10 wt.% of LPSQ-COOMe and 0.1 wt.% of MWCNT to PLLA increased the tensile strength of the nonwovens 2.4 times, improving also the elongation at the maximum stress.

scholarly journals Effects of MWCNTs on the Tensile Properties and Thermal Conductivity of BaTiO3 /Epoxy Nanocomposites

2020 ◽  
pp. 2226-2231
Author(s):  
Iman Ibrahem Nassif ◽  
Ban Mazin Al-Shabander
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Tensile Properties ◽  
Coupling Agent ◽  
Multiwall Carbon Nanotubes ◽  
Epoxy Nanocomposites ◽  
Pure Epoxy ◽  
Conductivity Enhancement ◽  
Multiwall Carbon

This research studied the effects of modified BaTiO3 (BT) nanoparticles with coupling agent γ-APS (0.5wt. %) on the tensile and thermal conductivity of epoxy nanocomposites with respect to content (0.25, 0.5, 0.75, 1, 3 and 5wt. %). Multiwall carbon nanotubes (MWCNTs) at different concentration (0.2, 0.4, 0.8 and 1 wt. %) were added to the BaTiO3/epoxy nanocomposites. The influence of MWCNTs on the tensile properties and thermal conductivity was investigated. The tensile strength and Young’s modulus of BaTiO3/epoxy nanocomposites film were increased at up to 3 wt. % of added BT, but  adding BT at more than 3 wt.% decreased the strength of epoxy. The tensile strength was increased with increasing MWCNTs content from 32 MPa for pure epoxy to the value 56.8 MPa for 1wt. % of MWCNTs content. The thermal conductivity of BaTiO3/epoxy nanocomposites improved with increase of BT content. At 3wt. % and 5wt. % of BaTiO3 the thermal conductivity of nanocomposites decreased. The increase of MWCNTs concentration from 0.2 wt. % to 1 wt. % resulted in a thermal conductivity enhancement.

scholarly journals Effect of MWNTs and SiC-Coated MWNTs on Properties of PEEK/LCP Blend

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
Ganesh Chandra Nayak ◽  
R. Rajasekar ◽  
Saswata Bose ◽  
Chapal Kumar Das
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Glass Transition ◽  
Transition Temperature ◽  
Multiwall Carbon Nanotubes ◽  
Tensile Modulus ◽  
Melt Blending ◽  
Multiwall Carbon

Multiwall carbon nanotubes (MWNTs) were modified with polycarbosilane-derived silicon carbide (SiC) to improve its dispersion in the polymer matrix. PEEK/LCP/MWNTs nanocomposites were prepared by melt blending. TEM images show the improved dispersion of SiC-coated MWNTs against agglomerated structure of pure MWNTs in the blend. FESEM images shows better fibrillation of LCP in presence of SiC-coated MWNTs. TGA reveals that nanocomposites with SiC-coated MWNTs shows higher thermal stability than MWNTs filled blend system. Based on enhanced dispersion, storage modulus, tensile modulus and tensile strength were increased drastically with the incorporation of SiC-coated MWNTs. Glass transition temperature of the nanocomposites shows significant improvement with the incorporation of MWNTs.

Boehmite Nanofibers as a Dispersant for Nanotubes in an Aqueous Sol

2018 ◽  
Author(s):  
Gen Hayase
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Aqueous Solutions ◽  
High Aspect Ratio ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon ◽  
Nanotube Films

By exploiting the dispersibility and rigidity of boehmite nanofibers (BNFs) with a high aspect ratio of 4 nm in diameter and several micrometers in length, multiwall-carbon nanotubes (MWCNTs) were successfully dispersed in aqueous solutions. In these sols, the MWCNTs were dispersed at a ratio of about 5–8% relative to BNFs. Self-standing BNF–nanotube films were also obtained by filtering these dispersions and showing their functionality. These films can be expected to be applied to sensing materials.

scholarly journals Comparative study of using Water-Based mud containing Multiwall Carbon Nanotubes versus Oil-Based mud in HPHT fields

2016 ◽  
Vol 25 (4) ◽  
pp. 459-464 ◽  
Author(s):  
M.I. Abduo ◽  
A.S. Dahab ◽  
Hesham Abuseda ◽  
Abdulaziz M. AbdulAziz ◽  
M.S. Elhossieny
Keyword(s):  
Carbon Nanotubes ◽  
Comparative Study ◽  
Multiwall Carbon Nanotubes ◽  
Water Based ◽  
Multiwall Carbon
Sign in / Sign up

Export Citation Format

Share Document