scholarly journals Statistical Analysis of the Tensile Strength of Carbon Nanotubes

2008 ◽  
Vol 41-42 ◽  
pp. 27-32 ◽  
Author(s):  
Chun Sheng Lu
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Information Criterion ◽  
Strength Distribution ◽  
Data Sets ◽  
Weibull Statistics ◽  
Multi Walled Carbon Nanotubes ◽  
Simple Extrapolation ◽  
Walled Carbon Nanotubes ◽  
Optimal Strength

Two available strength data sets of single-walled and multi-walled carbon nanotubes are analysed, and the effects of sample sizes on their tensile strengths are investigated. A minimum information criterion is applied to determine the optimal strength distribution. The results show that, in contrast to a two-parameter Weibull distribution, lognormal distribution seems to be a more suitable choice. A simple extrapolation of classical Weibull statistics to nanoscales may result in overestimation on the tensile strength of carbon nanotubes.

scholarly journals Functionalized multi-walled carbon nanotubes and hydroxyapatite nanorods reinforced with polypropylene for biomedical application

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fahad Saleem Ahmed Khan ◽  
N. M. Mubarak ◽  
Mohammad Khalid ◽  
Rashmi Walvekar ◽  
E. C. Abdullah ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Mechanical Characteristics ◽  
Biomedical Application ◽  
Thermal Study ◽  
Melt Compounding ◽  
Industry Applications ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
And Cartilage

AbstractModified multi-walled carbon nanotubes (f-MWCNTs) and hydroxyapatite nanorods (n-HA) were reinforced into polypropylene (PP) with the support of a melt compounding approach. Varying composition of f-MWCNTs (0.1–0.3 wt.%) and nHA (15–20 wt.%) were reinforced into PP, to obtain biocomposites of different compositions. The morphology, thermal and mechanical characteristics of PP/n-HA/f-MWCNTs were observed. Tensile studies reflected that the addition of f-MWCNTs is advantageous in improving the tensile strength of PP/n-HA nanocomposites but decreases its Young’s modulus significantly. Based on the thermal study, the f-MWCNTs and n-HA were known to be adequate to enhance PP’s thermal and dimensional stability. Furthermore, MTT studies proved that PP/n-HA/f-MWCNTs are biocompatible. Consequently, f-MWCNTs and n-HA reinforced into PP may be a promising nanocomposite in orthopedics industry applications such as the human subchondral bone i.e. patella and cartilage and fabricating certain light-loaded implants.

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.

Preparation and Properties of Graphene and its Nanocomposites

2015 ◽  
Vol 719-720 ◽  
pp. 141-144
Author(s):  
Chen Chi M. Ma ◽  
Sheng Tsung Hsiao ◽  
Wei Hao Liao ◽  
Shin Ming Li ◽  
Yu Sheng Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Hybrid Materials ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Fractured Surface ◽  
Scanning Electron

This study proposed a method to improve the mechanical properties and thermal conductivity of epoxy composites by incorporating multi-walled carbon nanotubes (MWCNTs) and multi-graphene platelets (MGPs) hybrid materials. The MWCNT can bridge adjacent MGPs and inhibit their aggregation effectively, leading to an increased contact surface area between MGP/MWCNT hybrid materials and epoxy matrix. From observing the fractured surface of composite by scanning electron microscope, MWCNT/MGP hybrid materials exhibited better compatibility than individual MWCNT and MGP did.The tensile strength of GD400-MWCNT/MGP/epoxy composites was 35.4% higher than that of epoxy, compared to only a 0.9% increase in tensile strength for MGP/epoxy composites. Thermal conductivity enhanced by 146.9% through incorporating MWCNT/MGP hybrid materials and 23.9% for MGP fillers, compared to non-derivatised epoxy.

Modeling of Concrete Composite Induced by Multi-Walled Carbon Nanotubes Using Response Surface Methodology

2015 ◽  
Vol 17 ◽  
pp. 8-13 ◽  
Author(s):  
R.S. Rimal Isaac ◽  
S. Subin ◽  
P. Prakash ◽  
P.K. Praseetha
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Response Surface ◽  
Strength Test ◽  
Split Tensile Strength ◽  
Tensile Strength Test ◽  
Response Surface Optimization ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this present work a response surface optimization was done to study the effect of the variables curing days, Multi-Walled Carbon Nanotube (MWCNT) and plasticizer on the strength of concrete. The variables were varied in three levels and a total of 15 cylindrical specimens were fabricated based on the experimental design. For measuring the effect of the variables, split tensile strength test was carried out on the specimens. For proper mixing of the MWCNT, sonication is carried out with plasticizer and then this mixture is added with water and the specimens are fabricated. Only the terms with p < 0.05 are chosen as significant. The results shows that an increase in MWCNT %, increased the split tensile strength of the concrete.

Preparation and Characterization of Polyesteramide Composited by Carbon Nanotube

2013 ◽  
Vol 562-565 ◽  
pp. 764-769
Author(s):  
Yi He ◽  
Lan Ma ◽  
Peng Hai ◽  
Jin Bo Li
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Carbon Nanotube ◽  
Tensile Testing ◽  
Elongation At Break ◽  
Multi Walled Carbon Nanotubes ◽  
In Suit ◽  
Walled Carbon Nanotubes

Polyesteramide (PEA) have good mechanical properties, compositing with multi-walled carbon nanotubes (MWNTs) can further improve the mechanical properties of the polymer. In this paper, PEA/MWNTs were synthesized in-suit using the reinforcement of nanocomposite. SEM and tensile testing were used to characterize the composited polyesteramides. The results show that MWNTs can be uniformly dispersed in the composited polyesteramides, the PEA/MWNTs tensile strength and Elongation at break increased.

Multi-Walled Carbon Nanotubes Reinforced Titanium Composites via Powder Metallurgy Process

2012 ◽  
Vol 520 ◽  
pp. 261-268 ◽  
Author(s):  
Katsuyoshi Kondoh ◽  
Thotsaphon Threrujirapapong ◽  
Sun Bin ◽  
Hisashi Imai ◽  
Shu Feng Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Powder Metallurgy ◽  
Titanium Powder ◽  
Fine Particles ◽  
Pure Titanium ◽  
Strengthening Effect ◽  
Composite Powders ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Un-bundled multi-walled carbon nanotubes (MWCNTs) were coated on titanium powder surface by using zwitterionic surfactant solution and mixing process, and their CNT/Ti composite powders were consolidated into full-dense materials by spark plasma sintering and the following hot extrusion process in solid-state. Wrought titanium powder metallurgy (PM) composites containing CNTs revealed extreme increment of yield stress and tensile strength of 85% and 50%, respectively, compared to conventional PM titanium with no reinforcement, while they had enough high ductility. The mechanical improvement was mainly due to dispersion strengthening effect of CNTs and in-situ formed TiC fine particles and a small mount of carbon solid solution into Ti matrix. In addition, the control of grain growth was promoted by TiC dispersoids during SPS, and contributed to their strengthening behavior. Furthermore, high-temperature tensile strength less than 673K of PM pure titanium materials was also obviously improved by the pinning effect of TiC particles dispersed at grain boundaries. In this paper, microstructural and mechanical properties of powder metallurgy titanium composites would be introduced in detail.

scholarly journals Influence of supported PtPd nanoparticles on the tensile strength of individual multi-walled carbon nanotubes: strength decrease by the interaction of metal and nanotube

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 49917-49922 ◽  
Author(s):  
Hideaki Suzuki ◽  
Tatsuhito Kimura ◽  
Go Yamamoto ◽  
Toshiyuki Hashida ◽  
Kenichi Motomiya ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The influence of supported PtPd nanoparticles on the tensile strength of individual multi-walled carbon nanotubes (MWCNTs) was investigated.

scholarly journals NICKEL-BASED MULTIWALLED CARBON NANOTUBE COMPOSITE COATINGS

2018 ◽  
Vol 56 (3B) ◽  
pp. 144
Author(s):  
Bui Hung Thang ◽  
Nguyen Xuan Toan ◽  
Nguyen Viet Phuong ◽  
Tran Van Hau ◽  
Nguyen Thi Hong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Composite Coatings ◽  
Physical And Mechanical Properties ◽  
Multiwalled Carbon ◽  
Nickel Electrodeposition ◽  
Multi Walled Carbon Nanotubes ◽  
Carbon Nanotube Composite ◽  
Walled Carbon Nanotubes

Carbon nanotubes (CNTs) have been widely known as nanomaterials with excellent mechanical properties. Previous studies reported that the tensile strength of multi-walled carbon nanotubes (MWCNTs) was up to 63 GPa and single-walled carbon nanotubes (SWCNTs) could reach 150 GPa while the highest tensile strength of the steel was found to be about 1.8 GPa. SWCNTs could have Young’s modulus up to 1000 GPa that was much greater than the value of 209 GPa of steel. Therefore, there is a great potential to utilize CNTs as reinforced materials for composites in general and Ni electrodeposition coating in particular to improve hardness, durability, corrosion, and other physical and mechanical properties. This paper presents results of preparing and examining characteristics of the Nickel electrodeposition coatings containing MWCNTs (Ni-MWCNTs). The Ni-MWCNTs composite coatings deposited on a steel plate with the area of 0.4 dm2 using bipolar pulses at 470 Hz and 50oC in a 5-liter bath. Amount of CNTs varying from 1 g/l to 3 g/l was dispersed into the solution by using surfactants and ultrasonic vibration. CNTs used in the study was MWCNTs diameters in the range from 20 to 90 nanometers and few micrometers in length. The SEM, EDS, hardness and adhesion tests were conducted to analyze the properties of the electrodeposition coatings. The obtained results indicated that the hardness and adhesion of the Ni-CNTs coating were 1.5 and 1.46 times, respectively, higher than those of the Ni coating. In addition, adhesion of the Ni-CNTs coating was significantly improved.

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