Study on the Synthesis Process of Carbon Nanotubes

2014 ◽  
Vol 926-930 ◽  
pp. 254-257
Author(s):  
A Ying Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Electrical Properties ◽  
Synthesis Process ◽  
Composite Fibers ◽  
Nanoscale Structures ◽  
Thermal And Electrical Properties ◽  
Potential Use ◽  
Bulk Carbon

Current use and application of nanotubes has mostly been limited to the use of bulk nanotubes, which is a mass of rather unorganized fragments of nanotubes. Bulk nanotube materials may never achieve a tensile strength similar to that of individual tubes, but such composites may, nevertheless, yield strengths sufficient for many applications. Bulk carbon nanotubes have already been used as composite fibers in polymers to improve the mechanical, thermal and electrical properties of the bulk product. The strength and flexibility of carbon nanotubes makes them of potential use in controlling other nanoscale structures, which suggests they will have an important role in nanotechnology engineering.

scholarly journals Effect of carbon nanotube (CNT) functionalization in epoxy-CNT composites

2018 ◽  
Vol 7 (6) ◽  
pp. 475-485 ◽  
Author(s):  
Sagar Roy ◽  
Roumiana S. Petrova ◽  
Somenath Mitra
Keyword(s):  
Tensile Strength ◽  
Glass Transition ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Polymer Matrix ◽  
Strong Dependence ◽  
Synthesis Process ◽  
Maximum Enhancement ◽  
Glass Transition Temperatures ◽  
Thermal And Electrical Properties

AbstractThe effect of carbon nanotube (CNT) functionalization in altering the properties of epoxy-CNT composites is presented. The presence of functional groups effectively influenced the colloidal behavior of CNTs in the precursor epoxy resin and the hardener triethylenetetramine (TETA), which affected the synthesis process and eventually the interfacial interactions between the polymer matrix and the CNTs. The physical, thermal, and electrical properties of the composites exhibited strong dependence on the nature of functionalization. At a 0.5-wt% CNT loading, the enhancement in tensile strength was found to be 7.2%, 11.2%, 11.4%, and 14.2% for raw CNTs, carboxylated CNTs, octadecyl amide-functionalized CNTs, and hydroxylated CNTs, respectively. Glass transition temperatures (Tg) also varied with the functionalization, and composites prepared using hydroxylated CNTs showed the maximum enhancement of 34%.

3D Nanocomposites of Covalently Interconnected Multiwalled Carbon Nanotubes with SiC with Enhanced Thermal and Electrical Properties

2015 ◽  
Vol 25 (31) ◽  
pp. 4985-4993 ◽  
Author(s):  
Lakshmy Pulickal Rajukumar ◽  
Manuel Belmonte ◽  
John Edward Slimak ◽  
Ana Laura Elías ◽  
Eduardo Cruz-Silva ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Thermal And Electrical Properties

scholarly journals Self-healing microcapsules encapsulated with carbon nanotubes for improved thermal and electrical properties

RSC Advances ◽  
2020 ◽  
Vol 10 (55) ◽  
pp. 33178-33188
Author(s):  
V. Naveen ◽  
Abhijit P. Deshpande ◽  
S. Raja
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Self Healing ◽  
Self Heating ◽  
Thermal And Electrical Properties

Carbon nanotubes incorporated microcapsules based self-heating composites.

Recent Developments in Multifunctional Nanocomposites Using Carbon Nanotubes

2010 ◽  
Vol 63 (5) ◽  
Author(s):  
Jacob M. Wernik ◽  
Shaker A. Meguid
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Polymer Nanocomposites ◽  
Health Monitoring ◽  
Future Trends ◽  
Theoretical Investigations ◽  
Monitoring Applications ◽  
Recent Developments ◽  
Thermal And Electrical Properties ◽  
Multifunctional Nanocomposites

This review summarizes the most recent advances in multifunctional polymer nanocomposites reinforced by carbon nanotubes and aims to stimulate further research in this field. Experimental and theoretical investigations of the mechanical, thermal, and electrical properties of carbon nanotubes and their composite counterparts are presented. This review identifies the processing challenges associated with this class of materials and presents techniques that are currently being adopted to address these challenges and their relative merits. This review suggests possible future trends, opportunities, and challenges in the field and introduces the use of these multifunctional nanocomposites in structural health monitoring applications.

Thermal and Electrical Properties of Polypropylene/Carbon Nanotube Composites

2011 ◽  
Vol 299-300 ◽  
pp. 802-805
Author(s):  
Jing Long Gao ◽  
Yan Hui Liu
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Degradation Rate ◽  
Volume Resistivity ◽  
Xrd Pattern ◽  
Nanotube Composites ◽  
Thermal And Electrical Properties ◽  
Carbon Nanotube Composites

In this work, the carbon nanotubes(CNTs) were reinforced with polypropylene(PP)matrix resins to improve the electrical and thermal properties of PP/ CNTs composites in different contents of 0,1, 3,and 5 wt.%. The surface, volume resistivity and crystallization type of the composites were investigated. As a result, the maximum degradation rate temperature of the composite is improved 30 °C, the surface resistivity and volume resistivity of composite are 5 ×106, 7 ×105,respectively, for the optimum composition of composite (CNTs 3 wt.%). The integrated XRD pattern of the composites shows the typical α-form PP crystals.

Mechanical, thermal, and electrical properties of graphene oxide–multiwalled carbon nanotubes-filled thermoplastic elastomer nanocomposite

2016 ◽  
Vol 49 (4) ◽  
pp. 345-355 ◽  
Author(s):  
Mou’ad A Tarawneh ◽  
Sahrim Ahmad ◽  
Ruey Shan Chen
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Electrical Properties ◽  
Natural Rubber ◽  
Multiwalled Carbon Nanotubes ◽  
Volume Ratio ◽  
Thermoplastic Elastomer ◽  
Multiwalled Carbon ◽  
Host Matrix ◽  
Thermal And Electrical Properties

This article studies the enhancement in the properties of thermoplastic natural rubber (TPNR) reinforced by graphene oxide (GnO) and multiwalled carbon nanotubes (MWCNTs). TPNR is a blend of polypropylene and liquid natural rubber (NR), which is used as a compatibilizer and NR at a percentage of volume ratio 70:10:20, respectively. Using TPNR as the host matrix, a number of TPNR/carbon nanotubes (CNTs), TPNR/GnO, and hybrid TPNR/GnO/CNTs nanocomposites are processed and their mechanical, thermal, and electrical properties are characterized. The results extracted from tensile and impact test showed that tensile strength, Young’s modulus, and storage modulus of TPNR/GnO/MWCNTs hybrid nanocomposite increased as compared with TPNR composite and TPNR/GnO nanocomposite but lower than TPNR/MWCNTs nanocomposite. On the other hand, the elongation at break considerably decreased with increasing the content of both types of nanoparticles. Based on the experimental results, the thermal, electrical conductivity of a 0.5 wt% MWCNTs-reinforced sample increased as compared with a pure TPNR and other MWCNTs/GnO-reinforced composites. The improved dispersion properties of the nanocomposites can be due to altered interparticle interactions. MWCNTs, GnO, and MWCNTs–GnO networks are well combined to generate a synergistic effect that is shown by scanning electron microscopy micrographs. With the existence of this network, the mechanical, thermal, and electrical properties of the nanocomposite were improved significantly.

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