Continuum modeling of the cohesive energy for the interfaces between films, spheres, coats and substrates

Zhao, Junhua; Lu, Ligang; Zhang, Zhiliang; Guo, Wanlin; Rabczuk, Timon

doi:10.1016/j.commatsci.2014.06.050

Cited by 22 publications

(5 citation statements)

References 30 publications

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“…On the other hand, the uniform layer thickness is also related to the spherical shape. As we know, coating process depends on the surface energy, which is also referred to cohesive energy in solid-liquid interphase [15] . Cohesive energy strongly depends on sphere size or curvature [15] , while that is definite for a certain sphere.…”

Section: Mechanism Of Coating Processmentioning

confidence: 99%

“…As we know, coating process depends on the surface energy, which is also referred to cohesive energy in solid-liquid interphase [15] . Cohesive energy strongly depends on sphere size or curvature [15] , while that is definite for a certain sphere. Hence, the sphere surface has uniform cohesive force to keep the soluble resin and uniform coating layer is finally synthesized.…”

Section: Mechanism Of Coating Processmentioning

confidence: 99%

See 1 more Smart Citation

Ceramic/Resin Composite Powders with Uniform Resin Layer Synthesized from SiO2 Spheres for 3D Technology

Sun¹,

Yang²,

Wang³

et al. 2019

Journal of Inorganic Materials

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Ceramic/resin composite powders used for 3D printing are synthesized by micro-sized SiO 2 dense spheres through a simple method, and their consolidation and sintering performances are fully characterized. The results show that the viscosity of coating media decreases gradually with the increasing temperature or decreasing the resin content and the most suitable resin content is 27wt%. The uniformly coated ceramic/resin composite spheres with well dispersity, fine fluidity (25 (s/50 g)) and larger packing density (45.0%) are successfully synthesized. The spherical shape of ceramic powders is revealed to be the vital factor for the achievement of uniform coating layers, because of the interconnected packed pores and the uniform cohesive energy of spheres. Meanwhile, the thickness (1.13.7 μm) of coating layer is controlled precisely through changing the pressure during the filtration process. Moreover, the synthesized powders show well consolidation performance for the favorite necks among spheres. After sintered at 1250 ℃, the ceramics with compressive strength of 10.2 MPa and bending strength of 2.7 MPa are obtained while the shrinkage is only 5%, which indicates the composite spheres have an advantage in improving the precision of 3D technology.

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Section: Mechanism Of Coating Processmentioning

confidence: 99%

Section: Mechanism Of Coating Processmentioning

confidence: 99%

Ceramic/Resin Composite Powders with Uniform Resin Layer Synthesized from SiO2 Spheres for 3D Technology

Sun¹,

Yang²,

Wang³

et al. 2019

Journal of Inorganic Materials

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show abstract

“…Different studies have been performed developing cohesive zone model (CZM) for crack initiation and propagation in different materials . Limited studies have been concentrated on the development or employment of CZM for the specific case of nanocomposites .…”

Section: Introductionmentioning

confidence: 99%

“…They have shown that developed model possesses a high accuracy in comparison with molecular dynamics (MD) simulation and available experimental data. In another study, Zhao et al have obtained explicit solutions for the cohesive energy of the interfaces between film/coat, sphere/coat, sphere/matrix, and sphere/substrate using continuum modeling and considering vdW interactions between them. Liu et al have applied cohesive interface model to characterize CNT‐based nanocomposites using boundary element method.…”

Section: Introductionmentioning

confidence: 99%

Investigating interaction between CNT and polymer using cohesive zone model

Rafiee

Ghorbanhosseini

2017

Polymer Composites

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The main goal of this research is to analyze mechanical properties of embedded carbon nanotubes (CNTs) in polymer using continuum modeling. A 3D finite element model of long CNT, polymer and the interface between CNT and polymer is constructed. Cohesive zone modeling is employed to capture the non‐bonded van der Waals interactions between CNT and polymer. Appropriate constitutive law is used for mathematical description of the adhesion between CNT and polymer occurring at the interface region. Constructed FE model is subjected to five different load cases to extract mechanical properties of CNT/polymer at micro scale in the presence of CNT‐polymer interface. The embedded CNT and the interface are replaced with an equivalent fiber. Observing transversely isotropic behavior, calculated mechanical properties of the virtual equivalent fiber are in a very good agreement with other reported values in literature. Finally, an investigation of CNT length effect on the reinforcement is carried out using a unit‐cell containing embedded short‐CNT in polymer. POLYM. COMPOS., 39:3903–3911, 2018. © 2017 Society of Plastics Engineers

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“…Very recently, the same group paid attention to the functionally graded interphase (FGI) between CNTs and the matrix [ 16 ] or spherical fillers and coating materials. Efforts were made to examine the effect of the FGI layer on the overall mechanical behavior of the hybrid system [ 17 ]. With the assumption of a diluted solution, a 3D solution was obtained for the constitutive relation of the nanofiller-matrix/coating layer interface when the nanocomposites were subjected to a hydrostatic tension.…”

Section: Introductionmentioning

confidence: 99%

Vibration of Piezoelectric ZnO-SWCNT Nanowires

2016

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A hybrid nanowire (HNW) was constructed by coating a single-wall carbon nanotube (SWCNT) with piezoelectric zinc oxide (ZnO). The two components of the HNW interact with each other via the van der Waals (vdW) force. This paper aims to study the effect of the piezoelectricity in the ZnO layer and the inter-phase vdW interaction on the fundamental vibration of the HNWs. In doing this, a new model was developed where the two components of the HNWs were modeled as Euler beams coupled via the interphase vdW interaction. Based on the model, the dependence of the frequency on an applied electrical voltage was calculated for HNWs of different geometric sizes to reveal the voltage effect. The results were then compared with those calculated without considering the inter-phase vdW interaction. It was found that the interphase vdW interaction can substantially decrease the structural stiffness, leading to a greatly enhanced piezoelectric effect but a lower frequency for the vibration of the HNWs.

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Continuum modeling of the cohesive energy for the interfaces between films, spheres, coats and substrates

Cited by 22 publications

References 30 publications

Ceramic/Resin Composite Powders with Uniform Resin Layer Synthesized from SiO2 Spheres for 3D Technology

Ceramic/Resin Composite Powders with Uniform Resin Layer Synthesized from SiO2 Spheres for 3D Technology

Investigating interaction between CNT and polymer using cohesive zone model

Vibration of Piezoelectric ZnO-SWCNT Nanowires

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