Multifunctionalities of Nanocarbon Materials Filled Cement-Based Composites

Materials combined with a small amount of nanomaterials offer new possibilities in developing of multifunctional composites. Nanocarbon materials (NCMs) such as carbon nanotubes/ nanofibres, and nanographite platelets have excellent intrinsic physical properties and improvement effect to matrix materials at nanoscale. They are promising fillers for improving the mechanical property and durability of cement-based materials and introducing functional properties to cement-based materials. This paper presents a comprehensive introduction about multifuntionlities of NCMs filled cement-based composites including mechanical properties, durability, electrical properties, thermal properties, electromagnetic properties, sensing property and etc.

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ELASTOMERIC COMPOSITES BASED ON NANOSPHERICAL PARTICLES AND CARBON NANOTUBES: A COMPARATIVE STUDY

Rubber Chemistry and Technology ◽

10.5254/rct.13.86983 ◽

2013 ◽

Vol 86 (3) ◽

pp. 423-448 ◽

Cited By ~ 17

Author(s):

Liliane Bokobza

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Electrical Properties ◽

Aspect Ratio ◽

Carbon Black ◽

Spherical Particles ◽

Styrene Butadiene Rubber ◽

Mechanical And Electrical Properties ◽

Polymer Filler ◽

Spherical Silica

ABSTRACT The reinforcement of elastomeric materials by addition of mineral fillers represents one of the most important aspects in the field of rubber science and technology. The improvement in mechanical properties arises from hydrodynamic effects depending mainly on the amount of filler and the aspect ratio of the particles and also on polymer–filler interactions depending on the surface characteristics of the filler particles and the chemical nature of the polymer. The past few years have seen the extensive use of nanometer-scale particles of different morphologies on account of the small size of the filler and the corresponding increase in the surface area that allow a considerable increase in mechanical properties even at very low filler loading. Among these nanoparticles, spherical particles (such as silica or titania) generated in situ by the sol-gel process and carbon nanotubes are typical examples of materials used as a nanosize reinforcing additive. Specific features of filled elastomers are discussed through the existing literature and through results of the author's research based on poly(dimethylsiloxane) filled with spherical silica or titania particles and on styrene–butadiene rubber filled with multiwall carbon nanotubes. The reinforcing ability of each type of filler is discussed in terms of morphology, state of dispersion (investigated by transmission electron microscopy, atomic force microscopy, small-angle neutron scattering), and mechanical and electrical properties. In addition, the use of molecular spectroscopies provides valuable information on the polymer–filler interface. Spherical silica and titania spherical particles are shown to exhibit two distinct morphologies, two different polymer–filler interfaces that influence the mechanical properties of the resulting materials. The superiority of carbon nanotubes over carbon black for mechanical reinforcement and electrical conduction is mainly attributed to their large aspect ratio rather than to strong polymer–filler interactions. The use of hybrid fillers (carbon nanotubes in addition to carbon black or silica, for example) has been shown to give promising results by promoting an enhancement of mechanical and electrical properties with regard to each single filler.

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Thermal Properties and Fire Performance of Woven Glass Fibre Reinforced Nylon 6 Nano-Composites with Carbon Nanotubes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.32.9 ◽

2008 ◽

Vol 32 ◽

pp. 9-12

Author(s):

Shirley Zhiqi Shen ◽

Stuart Bateman ◽

Qiang Yuan ◽

Mel Dell'Olio ◽

Januar Gotama ◽

...

Keyword(s):

Mechanical Properties ◽

Thermal Conductivity ◽

Carbon Nanotubes ◽

Thermal Properties ◽

Ignition Time ◽

Nylon 6 ◽

Nano Composites ◽

Fire Performance ◽

Thermal Stabilities ◽

Glass Fibre Reinforced

This paper presents the effects of incorporating carbon nanotubes (CNT) into nylon 6 on thermal properties and fire performance of woven glass reinforced CNT/nylon 6 nanocomposite laminates. Incorporation of CNT in nylon 6 improved the thermal stabilities, thermal conductivity and fire performance of laminates without compromising their mechanical properties. The thermal conductivity of laminates with 2 wt% CNT increased up to 42% compared to that without CNT. The ignition time and peak HRR time was delayed approx. 31% and 118%, respectively, in laminates with 4 wt% CNT in nylon 6 over that without CNT.

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Thermal and Electrical Properties of Polypropylene/Carbon Nanotube Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.299-300.802 ◽

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.

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Thermal and Mechanical Property Research of Polyethylene Modified by Reactive Quatemary Ammonium Salt

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.643.37 ◽

2013 ◽

Vol 643 ◽

pp. 37-42 ◽

Cited By ~ 2

Author(s):

Jiu Li ◽

Xue Jing Song ◽

Rong Jie Yang

Keyword(s):

Mechanical Properties ◽

Mechanical Property ◽

Thermal Properties ◽

Double Bond ◽

Ammonium Chloride ◽

Ammonium Salt ◽

Glass Temperature ◽

Bulk Materials ◽

Antibacterial Compound

In this investigation, dodecyl dimethyl(vinylbenzyl)ammonium chloride is applied to modify properties of polyethylene, and it is greatly focused on influences of it on the thermal properties and mechanical properties of this polymer. The results demonstrate that addition of this compound into polyethylene has little effect on thermal properties except for little improvement of its glass temperature, although it has reactive double bond in its molecular. Moreover, it is observed that it can enhance mechanical properties of this polymer and its addition has little change in colors of bulk materials. Therefore, it is believed that these excellent properties help to drive this antibacterial compound in applications.

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Nanoparticle/Epoxy Nanocomposites: Impact, Flexural and Thermal Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.150-151.1417 ◽

2010 ◽

Vol 150-151 ◽

pp. 1417-1420 ◽

Cited By ~ 1

Author(s):

Lei Chen ◽

Zhi Wei Xu ◽

Jia Lu Li ◽

Guang Wei Chen

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Thermal Properties ◽

Flexural Properties ◽

Nano Tio2 ◽

Nano Sio2 ◽

Weight Content ◽

Thermal Mechanical Properties ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

Nanocomposites based on epoxy which were reinforced by different nanoparticles were fabricated. Five types of nanoparticles (corresponding to multi-walled carbon nanotubes (MWNTs), nano-Al2O3, nano-TiO2 and nano-SiO2) were chosen and the weight content of the nanoparticles was 2wt.%. Impact, flexural and thermal-mechanical properties of the nanocomposites were investigated. Compared with neat epoxy, impact strength of systems which were reinforced by MWNTs and nano-TiO2 was increased by 60%. Concerned with the flexural properties, there was also an increase of about 10%~50% with the addition of the some nanoparticles such as MWNTs, nano-TiO2 and nano-SiO2. The heat resistance of the EP was not decreased by adding nanoparticles and the thermal properties of the systems were even improved with the addition of MWNTs.

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Electrical Transport Behavior in Phenolic Resin-based Composites Doped with Multi-walled Carbon Nanotubes

MRS Proceedings ◽

10.1557/proc-1006-r07-10 ◽

2007 ◽

Vol 1006 ◽

Author(s):

Renato Amaral Minamisawa ◽

Bopha Chhay ◽

Daryush ILA

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Electrical Transport ◽

Chemical Structure ◽

Phenolic Resin ◽

Structure Characterization ◽

Electromagnetic Properties ◽

Transport Behavior ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

AbstractThe reported electromagnetic properties of carbon nanotubes (CNT) make them a promising material for nanoelectronic applications [1,2]. Addition of CNT has recently been shown to enhance mechanical properties of phenolic-resin polymers [3]. We are attempting to control the electrical transport behavior of phenolic-based polymers doped with CNT as a function of the different nanopowder concentration added to the polymer. In that regard, we developed a technique to obtain a material with homogenous dispersion of nanopowders, an important factor that influences the transport behavior. The chemical structure characterization was also evaluated using optical techniques.

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Polypropylene nanocomposites based on C60-decorated carbon nanotubes: thermal properties, flammability, and mechanical properties

Journal of Materials Chemistry ◽

10.1039/c1jm10395d ◽

2011 ◽

Vol 21 (21) ◽

pp. 7782 ◽

Cited By ~ 61

Author(s):

Pingan Song ◽

Liping Zhao ◽

Zhenhu Cao ◽

Zhengping Fang

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Thermal Properties ◽

Polypropylene Nanocomposites

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Measurement of Thermal and Electrical Properties of Multiwalled Carbon Nanotubes–Water Nanofluid

Journal of Heat Transfer ◽

10.1115/1.4032955 ◽

2016 ◽

Vol 138 (7) ◽

Cited By ~ 14

Author(s):

Abdullah Al-Sharafi ◽

Ahmet Z. Sahin ◽

Bekir S. Yilbas

Keyword(s):

Carbon Nanotubes ◽

Thermal Properties ◽

Electrical Properties ◽

Water Mixture ◽

Algebraic Equations ◽

Multiwalled Carbon ◽

Carrier Fluid ◽

Particle Distributions ◽

Thermal And Electrical Properties ◽

Temperature Dependent Properties

The use of high conductive nanoparticles, such as carbon nanotubes (CNT), enhances the thermal and electrical conductivities of the carrier fluid. Depending upon the volumetric concentration of particles and their distribution in the carrier fluid, multifold enhancement of thermal and electrical properties is possible. Therefore, in the present study, thermal and electrical properties of CNT–water mixture are assessed at microscopic level. Special distribution of the CNT in water is obtained experimentally at microscale for different durations of the heating situation. Thermal and electrical properties are predicted numerically incorporating the particle distributions obtained from the experiment. The mass based analysis is also introduced to determine the thermal properties of the mixture. The findings are compared for those obtained from the simulations based on experimentally obtained micro-images. Algebraic equations are introduced to formulate the data obtained from the simulations for temperature dependent properties. It is demonstrated that the mass based estimation of thermal properties are significantly different than those obtained from the experimental based simulations because of the nonuniform particles distribution and their localized conductivity in the carrier fluid.

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