Self-assemblies of linearly aligned diamond fillers in polysiloxane/diamond composite films with enhanced thermal conductivity

Cho, Hong‐Baek; Konno, Ayumi; Fujihara, Takeshi; Suzuki, Tsuneo; Tanaka, Satoshi; Jiang, Weihua; Suematsu, Hisayuki; Niihara, Koichi; Nakayama, Tadachika

doi:10.1016/j.compscitech.2011.10.009

Cited by 50 publications

(27 citation statements)

References 29 publications

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“…The homogenous suspension casted on a polyamide spacer was subjected to three different types of electric fields (AC, DC and switched DC). The synthesized composite illustrated high electrical insulation and thermal conductivity[219]. Zhang at al[220] reported the synthesis of polymer/ND derivative by grafting monomer on ND surface.…”

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confidence: 99%

A Review on Polymeric Nanocomposites of Nanodiamond, Carbon Nanotube, and Nanobifiller: Structure, Preparation and Properties

Jabeen

Kausar

Muhammad

et al. 2015

Polymer-Plastics Technology and Engineering

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In this review, an overview of various types of nanofillers is presented with special emphasis on structure, synthesis and properties of carbon nanotube (CNT), nanodiamond (ND) and nanobifiller of CNT/ND, CNT/GO and CNT/graphene. In addition, polymer/CNT, polymer/ND and polymer/nanobifiller composites have been discussed.The efficacy of different fabrication techniques for nanocomposites (solution casting, insitu and melt blending method) and their properties were also discussed in detail. Finally, we have summarized the challenges and future prospects of polymer nanocomposites reinforced with carbon nanofillers hoping to facilitate progress in the emerging area of nanobifiller technology. INTRODUCTIONAmong the unique properties of polymer/nanomaterials, large surface to volume ratios and mechanical properties are noteworthy. These properties offer several exciting areas of research. The ultra high stiffness and hardness exhibited by nanomaterials make them important in reinforcing polymer matrices. According to recent research small additions of nanomaterials (~ 1 wt. %) may remarkably increase the mechanical properties (upto100%) although the precise mechanism responsible for the dramatic enhancement is not clearly understood [1,2]. It is generally believed that nanomaterials and polymer matrices develop molecular interactions which play a major role in enhancement. The key which hold true for the enhancement in mechanical properties is large surface area available for such interactions.In recent years variety of nanomaterials were synthesized and characterized, among them nanocarbons are of particular interest with different dimensionalities e.g. graphene, nanotubes and nanodiamond with dimensionalities two, one, and zero respectively [3,4].The mechanical properties of the polymer matrices reinforced with one type of nanocarbons have been extensively investigated [5]. Nature of interaction of nanocarbons constituents with polymer matrix depends on the dimensionality of filler constituent. For example the nanodiamond (ND) may interact with polymer at a point Downloaded by [New York University] at 14:08 04 August 2015 3 whereas carbon nanotubes (CNT) may interact over the length of polymer chain. However mechanical properties of polymer matrix have been known to improve by different type of nanocarbons. The synergistic effect in properties of final composite may be achieved by the incorporation of two types of nanocarbons, where each of them interacts differently with the matrix. CNT offers venues of exciting areas of research since Iijima initially identified CNT structure in 1991. CNT have unique thermal, electrical, mechanical and magnetic properties, high surface area, low density and high chemical stability. The diameter of the CNT usually ranges from 0.4-4 nm. The length of the nanotubes can vary from 100 nm to several micrometers depending on the preparation and purification methods used. Their uses are being extensively investigated for polymer composites, field emission displays, fabrication of reinforc...

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confidence: 99%

A Review on Polymeric Nanocomposites of Nanodiamond, Carbon Nanotube, and Nanobifiller: Structure, Preparation and Properties

Jabeen

Kausar

Muhammad

et al. 2015

Polymer-Plastics Technology and Engineering

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“…The need for polymer materials with high thermal conductivity ( K ) has become essential for the design of the next generation of electronic packaging devices 2 3 . However, most of the polymers often have a relatively low K , ranging from 0.1 to 0.5 W/m-K at room temperature 3 4 5 6 . Various thermally conductive fillers have been embedded into the polymers to improve their thermal conductivities.…”

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Silver Nanoparticle-Deposited Boron Nitride Nanosheets as Fillers for Polymeric Composites with High Thermal Conductivity

Wang

Zeng

Yao

et al. 2016

Sci Rep

201

105

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Polymer composites with high thermal conductivity have recently attracted much attention, along with the rapid development of the electronic devices toward higher speed and performance. However, a common method to enhance polymer thermal conductivity through an addition of high thermally conductive fillers usually cannot provide an expected value, especially for composites requiring electrical insulation. Here, we show that polymeric composites with silver nanoparticle-deposited boron nitride nanosheets as fillers could effectively enhance the thermal conductivity of polymer, thanks to the bridging connections of silver nanoparticles among boron nitride nanosheets. The thermal conductivity of the composite is significantly increased from 1.63 W/m-K for the composite filled with the silver nanoparticle-deposited boron nitride nanosheets to 3.06 W/m-K at the boron nitride nanosheets loading of 25.1 vol %. In addition, the electrically insulating properties of the composite are well preserved. Fitting the measured thermal conductivity of epoxy composite with one physical model indicates that the composite with silver nanoparticle-deposited boron nitride nanosheets outperforms the one with boron nitride nanosheets, owning to the lower thermal contact resistance among boron nitride nanosheets’ interfaces. The finding sheds new light on enhancement of thermal conductivity of the polymeric composites which concurrently require the electrical insulation.

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“…Good thermal conductivity becomes one of the most important properties when developing materials for new microelectronic products. Diamond has one of the highest thermal conductivities with a wide band gap ranging from semi‐conducting and conducting areas, and is used as fibers, coatings, and in other shapes to harness its useful properties as thermally conductive filler for electronic components . Figure shows thermal conductivity values of the BADCy/nanodiamond composites.…”

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confidence: 99%

Thermal conductivity and properties of cyanate Ester/nanodiamond composites

Şen

Kahraman

2014

Polymers for Advanced Techs

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The aim of this study was to improve thermal conductivity, thermal stability, and mechanical properties of bisphenol A dicyanate ester with the addition of nanodiamond. Cyanate ester/nanodiamond composites containing various ratios of nanodiamond were prepared. Thermal stability and thermal conductivity of the samples were evaluated by thermogravimetric analysis, differential scanning calorimetry, and laser flash method, respectively. The samples were characterized with the analysis such as gel content, water absorption capacity, and stress-strain test. Hydrophobicity of the samples was determined by contact angle measurements. Moreover, the surface morphology of the samples was investigated by a scanning electron microscopy. The obtained results prove that the cyanate ester/nanodiamond composites have good thermal and mechanical properties and can be used in many applications such as the electronic devices, materials engineering, and other emergent.

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Self-assemblies of linearly aligned diamond fillers in polysiloxane/diamond composite films with enhanced thermal conductivity

Cited by 50 publications

References 29 publications

A Review on Polymeric Nanocomposites of Nanodiamond, Carbon Nanotube, and Nanobifiller: Structure, Preparation and Properties

A Review on Polymeric Nanocomposites of Nanodiamond, Carbon Nanotube, and Nanobifiller: Structure, Preparation and Properties

Silver Nanoparticle-Deposited Boron Nitride Nanosheets as Fillers for Polymeric Composites with High Thermal Conductivity

Thermal conductivity and properties of cyanate Ester/nanodiamond composites

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