C. Sabarinathan, S. Muthu and Md. Naushad Ali "Experimental Study On Tensile Behavior Of Multi Wall Carbon Nanotube Reinforced" Journal of Applied Sciences Research, 8(7): 3253-3259, 2012 (original) (raw)

Studies Of Influence on Multiwalled Carbon Nanotubes (MWCNT’s) Reinforced Epoxy Based Composites

International Journal of Modern Engineering Research (IJMER), 2014

In the present work, the Multiwalled Carbon Nanotube reinforced epoxy composites are fabricated with different weight fraction of the reinforcement and are subjected to hardness test as well as compression test. The mechanical properties of these composites are investigated and found posses increase in hardness test and young’s modulus with increased weight fraction of the reinforcement compared to the based matrix fabricated using the same process.

Properties of Epoxy Composites Reinforced with Multi-walled Carbon Nanotubes

2016

Plastic composite material has been in to frontier of research as one of the new competitive materials in engineering. Especially, Particle reinforced plastic is a relatively new class of composite material manufactured from particles, nanoparticles and resins, and has proven efficient and economical for the development and repair of new and deteriorating structures. In this project, we report the mechanical properties of epoxy composites strengthened with Multi walled carbon nanotubes. Different composition (0.1%, 0.5%, 1%, 1.5%) of Multi Walled Carbon Nanotubes (MWCNT) are mixed with epoxy resin and castings are prepared by moulding technique. The different mechanical properties such as Tensile strength, Flexural strength and Hardness are evaluated at room temperature. One set of samples are immersed in salt water for moisture absorption and strength degradation studies. The mechanical properties are determined and are compared with that of dry specimens. The Results show that the Mechanical Properties increases with the increase in Percentage of MWCNT for the prepared Composites.

Functionalization of Multi-Walled Carbon Nanotube and Mechanical Property of Epoxy-Based Nanocomposite

Journal of Aerospace Technology and Management, 2015

The focus of this study is to evaluate the effect of carboxyl and amino functionalization of multiwalled carbon nanotubes on the mechanical property of the epoxy resin filled with modified carbon nanotubes. The carbon nanotubes were treated with sulfuric and nitric acids and also with hexamethylenediamine. The presence of acid and amine chemical groups on the carbon nanotube surface was confirmed by X-ray photoelectron spectroscopy. The composites were produced with epoxy resin and modified carbon nanotubes. Vickers hardness tests were carried out on the composites and neat resin. The results showed an increase of hardness in the composite prepared with functionalized carbon nanotubes. This phenomenon is due to the fact that the chemical interaction between modified carbon nanotube and epoxy resin is much stronger than between pristine carbon nanotube and epoxy resin. This stronger interaction is related to the presence of functionalized carbon nanotubes.

IMPROVING MECHANICAL PROPERTIES OF EPOXY BY ADDING MULTI-WALL CARBON NANOTUBE

Warsaw, 2016

In this research, multi-walled carbon nanotubes (MWCNTs) are used as the reinforcement in an epoxy resin with weight percentages (0, 0.2, 0.4, 0.6, 0.8, 1) wt%, respectively, by using both direct (nonhomogeneous) and homogeneous dispersion mixing processes to prepare (epoxy/MWCNTs) nanocomposites. Tensile and drop weight impact tests are used to evalu- ate mechanical properties of the composites. Results show that homogeneous dispersion has a great effect on enhancing mechanical properties of multi-wall carbon nanotube reinforced composites. Adding 0.2wt% of MWCNTs enhances and increases tensile properties, and adding 0.6 wt% of MWCNTs enhances impact properties.

Structure and Mechanical Properties of Polymeric Composites with Carbon Nanotubes

Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference

Experimental investigations of single-wall carbon nanotubes (CNT) effect on the mechanical properties of polymeric composite materials based on epoxy matrix have been carried out. It has been found that addition of CNT at low concentration dramatically increases tensile strength (20 – 30 per cent growth) and Young’s modulus of the samples under study. Structure of polymeric composites with CNT was characterized by atomic force microscopy (AFM) and scanning electron microscopy (SEM). AFM images of the samples under study confirm strong interaction between polymeric matrix and nano-additives, demonstrating intimate contact between CNT and epoxy surroundings which is of great importance for composite material reinforcement. Dependences of tensile strength and those of Young’s modulus on CNT concentration are discussed using micromechanics models for nanocomposites.

Functionalization effect on physico-mechanical properties of multi-walled carbon nanotubes/epoxy composites

Polymers for Advanced Technologies, 2011

Functionalization of multi-walled carbon nanotubes (MWCNTs) influences physico-mechanical properties of MWCNT/epoxy composites. Samples based on epoxy resin (EP) and different weight percentage of MWCNTs (functionalized and non-functionalized) were prepared. Epoxy/carbon nanotubes were prepared by different mixing methods (ultrasounds and a combination of ultrasounds and mechanical mixing) and better dispersion of carbon nanotubes (CNTs) was observed in the case of combination of these processes. CNTs modified with different functional groups were investigated. It was found that modified nanotubes form bigger agglomerates than unmodified ones. Surfactants were used to lower the surface tension of the liquid, which enabled easier spreading and reducing the interfacial tension. Some surfactants facilitate homogeneous dispersion of nanotubes in the resin through the reduction of resin viscosity.

A Study on the Role of Multi Wall Carbon Nanotubes on Tensile Properties of Epoxy Nanocomposites

The objective of the current research is focused on the producing of epoxy nanocomposites reinforced with different multi wall carbon nanotubes (MWCNTs) content and investigation of their tensile properties. For this purpose two series of epoxy matrix with different hardener were produced. Then the matrices were reinforced with different carbon nanotube content (0, 0.3, 0.6 and 1Wt%). Transition electron microscope (TEM) was used to evaluate the distribution of MWCNTs inside the matrix. The standard tensile specimens were made using casting method. Tensile test was done according to ASTM 638 at 1mm/min cross head speed using Zwick Z250 tensile machine. TEM micrographs showed carbon nanotubes were impregnated with the resin and proved that the interface was strong sufficiently. The results of tensile test showed that tensile properties of epoxy/MWCNTs varied as MWCNTs content added to it. In fact addition MWCNTs to epoxy caused to increase both yield stress and Young's modulus of epoxy. Also it illustrated that the role of MWCNTs reinforcing depends strongly on matrix stiffness. Indeed reinforcing effect of MWCNTs in soft matrix is much higher than that of hard ones. The International Conference on MEMS and Nanotechnology, ICMN'08 13-15 May 2008, Kuala Lumpur Malaysia _____________________________________________________________________________________________

Multiwalled carbon nanotube reinforced polymer composites

Materials Science and Engineering: A, 2008

Due to their high stiffness and strength, as well as their electrical conductivity, carbon nanotubes are under intense investigation as fillers in polymer matrix composites. The nature of the carbon nanotube/polymer bonding and the curvature of the carbon nanotubes within the polymer have arisen as particular factors in the efficacy of the carbon nanotubes to actually provide any enhanced stiffness or strength to the composite. Here the effects of carbon nanotube curvature and interface interaction with the matrix on the composite stiffness are investigated using micromechanical analysis. In particular, the effects of poor bonding and thus poor shear lag load transfer to the carbon nanotubes are studied. In the case of poor bonding, carbon nanotubes waviness is shown to enhance the composite stiffness.

Mechanical properties of multi-walled carbon nanotube/epoxy composites

Materials & Design, 2010

Untreated and acid-treated multi-walled carbon nanotubes (MWNT) were used to fabricate MWNT/epoxy composite samples by sonication technique. The effect of MWNT addition and their surface modification on the mechanical properties were investigated. Modified Halpin–Tasi equation was used to evaluate the Young’s modulus and tensile strength of the MWNT/epoxy composite samples by the incorporation of an orientation as well as an

Mechanical Properties of Epoxy/Multi-Walled Carbon Nanotubes Composites

DAAAM International Scientific Book, 2016

In this paper, two types of multi-wall carbon nanotubes (MWCNTs) were dispersed into two different epoxy resins by highshear mixing. Dispersion and homogenisation of nanofillers was analysed by Field Emission Scanning Electrone Microscopy (FESEM). Microhardness of epoxy/MWCNTs nanocomposites, as well as of neat epoxy resins, is measured by Vickers method. The evolution of nanocomposites microhardness values were studied in function of curing time taking in account the influence of two different epoxy matrix and MWCNTs. Asymptotic values were analysed and compared with those of pure epoxy resin.