The effect of van der Waals-based interface cohesive law on carbon nanotube-reinforced composite materials

Tan, Henry; Jiang, Liying; Huang, Yonggang; Liu, B.; Hwang, Keh Chih

doi:10.1016/j.compscitech.2007.05.016

Cited by 135 publications

(69 citation statements)

References 23 publications

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“…From this relation we obtain ffiffi ffi 2 6 p r is the equilibrium distance between atoms, and e is the bonding energy at the equilibrium distance [12].…”

Section: Resultsmentioning

confidence: 99%

High compressive strength of home waste and polyvinyl acetate composites containing silica nanoparticle filler

Masturi

Abdullah

Khairurrijal

2011

J Mater Cycles Waste Manag

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Simple mixing and hot pressing methods were used to make composites from home waste-in particular, paper and dry leaves-using polyvinyl acetate (PVAc) as an adhesive and silica nanoparticles as filler. The optimum composition for the strongest composites, in terms of compressive strength, had a mass ratio of silica nanoparticles/ PVAc/(paper ? dry leaves) of 3:80:280. With this mass ratio, a compressive strength of 68.50 MPa was obtained for samples prepared at a pressing temperature of 150°C, pressing pressure of 100 MPa, and pressing time of 20 min. The addition of silica nanoparticles increased the compressive strength by about 50%, compared with composites made without the addition of nanosilica (45.60 MPa). Higher compressive strength was obtained at a higher pressing pressure. At a pressing pressure of 120 MPa, pressing temperature of 150°C, and pressing time of 20 min, a compressive strength of 69.10 MPa was obtained. When the pressing time was increased to 45 min at a pressing pressure of 120 MPa, a compressive strength of 84.37 MPa was measured. A model was also proposed to explain the effects of pressing pressure and pressing time on compressive strength. The model predictions were in good agreement with the experimental data.

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“…From this relation we obtain ffiffi ffi 2 6 p r is the equilibrium distance between atoms, and e is the bonding energy at the equilibrium distance [12].…”

Section: Resultsmentioning

confidence: 99%

High compressive strength of home waste and polyvinyl acetate composites containing silica nanoparticle filler

Masturi

Abdullah

Khairurrijal

2011

J Mater Cycles Waste Manag

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“…At very small fraction, the presence of silica slightly increases the composite stiffness due to smaller of the contact formed. When it is slightly added, its effect is more apparent as increasing of the contact formed, even at certain fraction the compressive stength attaining 40.47 MPa is maximum value, that it means that contact occured is also maximum and if the fraction is added again, the silica can not interact effectively with PU/solid waste composite due to maximum contact formed, instead it interact with the neighboring silica that increases the brittleness of composite [7,21,22]. As result the composite strength decreases.…”

Section: Resultsmentioning

confidence: 99%

“…Lee et al [24] reported that at lower content, silica particles disperse into amine and carbonyl groups of PU. In the silica/PU dispersed, the oxygen of silica interacts with the hydrogen of amine group to form hydrogen interaction that is very important in governing composite strength [21,25].…”

Section: -2mentioning

confidence: 99%

Effect of quartz sand on compressive strength of the solid waste composite

Masturi¹,

Marwoto²,

Sunarno³

et al. 2016

AIP Conference Proceedings

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Effect of turbulence modelling to predict combustion and nanoparticle production in the flame assisted spray dryer based on computational fluid dynamics AIP Conference Proceedings 1712, 040002 (2016) A solid waste composite was successfully made. Preliminary, the composite was synthesized using polyurethane (PU) as binder mixed with the solid waste using simple mixing method and then hot-pressed at at pressure of 4 metric-tons and temperature of 80 C for 20 minutes. To enhance its strength, quartz sand partilces with varied content then were added into the PU-solid waste mixture. From the compressive strength test, it was obtained that PU/solid waste composite with PU fraction (w/w) of 0.43 has optimum compressive strength of 38.91 MPa. Having been added quartz sand having average particles size of 0.94 m, its compressive strength attains maximum at 40.47 MPa for quartz sand fraction (w/w) of 4.27 x 10 -3 . The strength is comparable to that of clay brick, slate stone, sandstone, limestone, alder wood, aspen wood, black cherry and pine woods. Therefore, this composite is very adequate to compete the building materials such as the bricks, stones and woods.

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“…Fundamental to the reinforcing effectiveness are the interfacial characteristics between the nanotube and the matrix. Upon this issue, a considerable number of works have been reported previously [11,14]. Since CNTs usually agglomerate due to van der Waals force [16], they are extremely difficult to disperse and align in most of the common polymer matrices [17].…”

Section: Finite Element Modelingmentioning

confidence: 99%

“…It was concluded that the shear strength of a polymer/nanotube interface with weak non-bonded interactions could be increased by over an order of magnitude with the introduction of a relatively low density (<1%) of chemical bonds between the nanotube and polymer. Tan et al [11] studied the effect of van der Waals-based interface forces on the CNT-polymer composite. They incorporated a nonlinear cohesive law introduced by Jiang et al [12] in the micromechanical model of the composite.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Multi-Scale Finite Element Method to Predict Tensile Behavior of Carbon Nanotube-Reinforced Polymer Composites

Mohammadpour

Awang

2013

JNanoR

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Abstract. The ability of carbon nanotubes (CNTs) to consider as the strongest and stiffest elements in nanoscale composites remains a powerful motivation for the research in this area. This paper describes a finite element (FE) approach for prediction of the mechanical behavior of polypropylene (PP) matrix reinforced with single walled carbon nanotubes (SWCNTs). A representative volume element is proposed for modeling the tensile behavior of aligned CNTs/PP composites. The CNT is modeled with solid elements. Modified Morse potential is used for simulating the mechanical properties of an isolated carbon nanotube. The matrix is modeled as a continuum medium by utilizing an appropriate nonlinear material model. A cohesive zone model is assumed between the nanotube and the matrix with perfect bonding until the interfacial shear stress exceeds the bonding strength. Using the representative volume element, a unidirectional CNT/PP composite was modeled and the results were compared with corresponding rule-of-mixtures predictions. The effect of interfacial shear strength on the tensile behavior of the nanocomposite was also studied. The influence of the SWCNT within the polymer is clearly illustrated and discussed. The results showed that polymer's Young's modulus and tensile strength increase significantly in the presence of carbon nanotubes.

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The effect of van der Waals-based interface cohesive law on carbon nanotube-reinforced composite materials

Cited by 135 publications

References 23 publications

High compressive strength of home waste and polyvinyl acetate composites containing silica nanoparticle filler

High compressive strength of home waste and polyvinyl acetate composites containing silica nanoparticle filler

Effect of quartz sand on compressive strength of the solid waste composite

Nonlinear Multi-Scale Finite Element Method to Predict Tensile Behavior of Carbon Nanotube-Reinforced Polymer Composites

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