A detailed thermal analysis of nanocomposites filled with SiO2, AlN or boehmite at varied contents and a review of selected rules of mixture

Duwe, Stephanie; Arlt, Christine; Aranda, Santiago; Riedel, Ulrich; Ziegmann, Gerhard

doi:10.1016/j.compscitech.2012.04.015

Cited by 44 publications

(16 citation statements)

References 24 publications

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“…Duwe et al 41 described a strong increase in the modulus of approximately 50% at 25 wt % nanosilica at RT and at 50 C. Further, they reported an increase in the thermal conductivity. In comparison to SiO 2 , they investigated AlN and boehmite modifications as well.…”

Section: Anhydride-cured Epoxy Resinsmentioning

confidence: 92%

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Sprenger

2013

J of Applied Polymer Sci

149

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Surface-modified silica nanoparticles, 20 nm in size and with a very narrow particle size distribution, have been available as concentrates in epoxy resins in industrial quantities for the last 10 years. They can be used in epoxy resin formulations to improve many different properties, including the strength, modulus, toughness, and fatigue performance. In this review, I examine the literature published in the last decade, compare the results with a focus on the mechanical properties, and discuss the mechanisms responsible for property improvements.

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Section: Anhydride-cured Epoxy Resinsmentioning

confidence: 92%

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Sprenger

2013

J of Applied Polymer Sci

149

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“…The decrease of the CTE was mainly attributed to the following two factors. On one hand, the CTE of silica is only 0.54 ppm/°C [25], which is almost four orders of magnitude lower than that of pure PDMS. Hence the CTE of PDMS can be decreased by adding silica nanoparticles.…”

Section: The Cte Of Pdms/silica Nanocompositesmentioning

confidence: 99%

Effects of Fumed and Mesoporous Silica Nanoparticles on the Properties of Sylgard 184 Polydimethylsiloxane

Liu

Zong

et al. 2015

Micromachines

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Abstract:The effects of silica nanoparticles on the properties of a commonly used Sylgard 184 polydimethylsiloxane (PDMS) in microfluidics were systemically studied. Two kinds of silica nanoparticles, A380 fumed silica nanoparticles and MCM-41 mesoporous silica nanoparticles, were individually doped into PDMS, and the properties of PDMS with these two different silica nanoparticles were separately tested and compared. The thermal and mechanical stabilities of PDMS were significantly enhanced, and the swelling characteristics were also improved by doping these two kinds of nanoparticles. However, the transparency of PDMS was decreased due to the light scattering by nanoparticles. By contrast, PDMS/MCM-41 nanocomposites showed a lower coefficient of thermal expansion (CTE) owing to the mesoporous structure of MCM-41 nanoparticles, while PDMS/A380 nanocomposites showed a larger elastic modulus and better transparency due to the smaller size of A380 nanoparticles. In addition, A380 and MCM-41 nanoparticles had the similar effects on the swelling characteristics of PDMS. The swelling ratio of PDMS in toluene was decreased to 0.68 when the concentration of nanoparticles was 10 wt %.

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“…One approach is to identify a highly conductive filler and calculate an optimal effective thermal conductivity based on a weighted average of the matrix plus filler. But, the weighted average approach often does not correspond well with measured effective thermal conductivity [2]. For example, Biercuk et al added singlewall carbon nanotubes (SWNT) and vapor grown carbon fibers to augment the thermal transport properties of industrial epoxy [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of nanofiller shape on effective thermal conductivity of fluoropolymer composites

Smith

Pantoya

2015

Composites Science and Technology

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Filler particle shape and size influence interconnectivity within a polymer matrix and both play a significant role in controlling the effective thermal conductivity of a composite. This study examines the effect of nanofiller particle shape in a polytetrafluorethylene (PTFE) matrix on thermal energy transport. Experimental measurements using a laser flash analysis method are performed on PTFE with three different shaped carbon fillers: nano-diamond spheres, carbon nanotubes (CNT) and graphene flakes. Filler concentration ranged from 0 to 30 %. The experimental results are coupled with a particle connectivity model to understand the relationship between energy transport and filler connectivity. Results show filler particles with more micron scale dimensions form better interconnected networks at lower volume concentrations than fillers with fewer micron scale dimensions. Filler connectivity influences effective conductivity: specifically, nano-diamond spheres showed negligible interconnectivity and result in negligible change in thermal conductivity. The CNT, with one-micron scale dimension (i.e., length) and flakes, with two-micron scale dimensions (i.e., length and height), both exhibited linear increases in interconnectivity and effective thermal conductivity. Graphene interconnectivity in PTFE is six times that of CNT and thermal conductivity is 0.5 W/mK, two times that of CNT, respectively. These results provide new insights on how to optimize nanoparticle structure to enhance thermal energy transport.

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A detailed thermal analysis of nanocomposites filled with SiO2, AlN or boehmite at varied contents and a review of selected rules of mixture

Cited by 44 publications

References 24 publications

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Effects of Fumed and Mesoporous Silica Nanoparticles on the Properties of Sylgard 184 Polydimethylsiloxane

Effect of nanofiller shape on effective thermal conductivity of fluoropolymer composites

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