Experimental evaluation and modeling of thermal conductivity of tetrafunctional epoxy resin containing different carbon nanostructures

Romano, Vittorio; Naddeo, Carlo; Vertuccio, Luigi; Lafdi, Khalid; Guadagno, Liberata

doi:10.1002/pen.24629

Cited by 25 publications

(16 citation statements)

References 33 publications

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“…The thermal conductivity measurements were carried out using the Hot Disk® thermal constants analyzer (Hot-Disk AB Sweden) based on the Transient Plane Source technique (TPS) [7,8]. In TPS method, an electrically insulated flat nickel sensor, placed between two pieces of a sample under investigation, plays a role of the heater and thermometer simultaneously ( Figure 1).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of thermal and electrical conductivity of carbon-based PLA nanocomposites for 3D printing

Lamberti¹,

Spinelli²,

Kuzhir³

et al. 2018

AIP Conference Proceedings

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PLA nanocomposites for fused-deposition modeling (FDM) technique are considered. Thermal and electrical conductivity of carbon-based PLA nanocomposites are investigated looking at the different morphological characteristic of the carbon nanoparticles. In particular commercial multi-walled carbon nanotubes (CNTs) and graphene nanoplates (GNPs) are considered as filler in order to realize filament for 3D printed devices for electrical and thermal application. In this paper a filler concentration up to 12% in weight is investigated. Transient Plane Source (TPS) measurements of thermal conductivity show that better heat conduction is obtained through the incorporation in the PLA matrix of carbonaceous nanostructures with predominantly two-dimensional shape (GNPs). DC electrical measurements show that the nanocomposite filled with the predominant mono-dimensional carbon nanoparticle (i.e. CNT) exhibits lower electrical percolation threshold, whereas a greater post percolation electrical conductivity is established with the two-dimensional filler (i.e. GNP). Such characteristics are to be considered in order to make robust and cost effective 3D printed device, by preferring 1D filler or 2D filler for electrical or thermal application respectively. Moreover, multiphase nanocomposites obtained with an optimized combination of CNT and GNP nanoparticles could be exploited to realize devices for joint electrical and thermal application.

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Section: Methodsmentioning

confidence: 99%

Evaluation of thermal and electrical conductivity of carbon-based PLA nanocomposites for 3D printing

Lamberti¹,

Spinelli²,

Kuzhir³

et al. 2018

AIP Conference Proceedings

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“…The thermal conductivity of polymer-based composites depends not only on the thermal conductivity of the filler and polymer matrix, but also on the type, content, shape, and distribution of the filler [1][2][3][4][5][6][7][8]. The surface modification of the nanoparticles and their interface interaction with the polymer matrix will greatly affect the thermal conductivity of the composite system [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The Newton equation was solved by the velocity Verlet algorithm. During calculation Van der Waals chose Atom Based method and Electrostatic chose Ewald method[5,7,9].…”

mentioning

confidence: 99%

Thermodynamic simulations of SrTiO3/epoxy nanocomposites with different mass fractions

Wen

Zhang

Xia³

et al. 2019

SN Appl. Sci.

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Molecular dynamics simulations have been used to study the thermomechanical properties of SrTiO 3 /epoxy nanocomposites with different mass fractions. The calculation results revealed that thermal conductivity increased with mass fractions and temperature, which was consistent with the measured experiment value. Motion of molecular chain segment of pure epoxy resin became intense with temperature increase. With the increase in mass fractions of incorporated SrTiO 3 nanoparticles, the mobility of molecular chain segment was significantly weakened below 500 K compared with pure epoxy resin model and the model of nanocomposite with a mass fraction of 25 wt% SrTiO 3 showed best structure stability. Dipole autocorrelation functions (DACF) of pure epoxy resin fluctuated slightly under 350 K, but substantial fluctuation happened over 500 K. With the incorporation of SrTiO 3 nanoparticles, the fluctuation of DACF of nanocomposites decreased drastically, maintaining a small value of 0.004 Debye, which demonstrated that structure stability of nanocomposites was strengthened under 500 K. Based on interface model between epoxy resin macromolecular ligands and crystal plane (110) of SrTiO 3 , interface interaction energy was calculated to be − 235.9 kcal/mol. To sum up, incorporation of SrTiO 3 nanoparticles could significantly improve the thermomechanical properties of epoxy resin and enhance structure stability of nanocomposites.

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“…In this context, nanostructured fillers such as clay, carbon nanotubes (CNT) and graphene-based nanoparticles have aroused great enthusiasm in the scientific community given the possibility to transfer the very interesting nanostructure properties to polymeric matrices. This last strategy has proven to be very effective to impart or improve electrical, thermal, sensing, mechanical, transport properties of polymeric systems [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Unlike traditional filled polymer systems, nanocomposites require a very low dispersant loading (between 0.01 wt % and 3 wt %) to achieve significant enhancements in physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Nano-Charged Polypropylene Application: Realistic Perspectives for Enhancing Durability

et al. 2017

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Isotactic polypropylene/multi-walled carbon nanotube (iPP/MWCNTs) films have been exposed to accelerated weathering in a UV device for increasing times. The effect of UV irradiation on the structural and chemical changes has been investigated. The resistance to accelerated photooxidation of (iPP/MWCNTs) films has been compared to the photooxidation behaviour of unfilled polypropylene films with the same structural organization. The chemical and structural modifications resulting from photooxidation have been followed using infrared spectroscopy, calorimetric and diffractometric analysis. MWCNTs embedded in the polymeric matrix are able to strongly contrast the degradation mechanisms and the structural and morphological rearrangements caused by the UV treatment on the unfilled polymer. MWCNTs determine an induction period (IP) before the increase of the carbonyl and hydroxyl groups. The extent of the IP is strictly correlated to the amount of MWCNTs. The low electrical percolation threshold (EPT) and the electrical conductivity of the nanocomposites, together with their excellent thermal and photooxidative stability, make them promising candidates to fulfill many industrial requirements.

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Experimental evaluation and modeling of thermal conductivity of tetrafunctional epoxy resin containing different carbon nanostructures

Cited by 25 publications

References 33 publications

Evaluation of thermal and electrical conductivity of carbon-based PLA nanocomposites for 3D printing

Evaluation of thermal and electrical conductivity of carbon-based PLA nanocomposites for 3D printing

Thermodynamic simulations of SrTiO3/epoxy nanocomposites with different mass fractions

Nano-Charged Polypropylene Application: Realistic Perspectives for Enhancing Durability

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