Improvement of Thermal Conductivity of Poly(dimethyl siloxane) Composites Filled with Boron Nitride and Carbon Nanotubes

Ha, Jin-Uk; Hong, Jinho; Kim, Minjae; Choi, Jin Kyu; Park, Dong Wha; Shim, Sang Eun

doi:10.7317/pk.2013.37.6.722

Cited by 11 publications

(12 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If tube length was decreased during dispersion, increased phonon scattering would reduce thermal conductivity. [12] Furthermore, observed enhancement in thermal conductivity is equivalent to or outperforms previously reported enhancement achieved by incorporating BNNTs and CNTs into epoxies (80%-200% at 10 wt%) [31,32] and PDMS (50% at 10 wt%) [33] indicating that the developed facile dispersion method is capable of producing uniformly dispersed BNNTs while preserving BNNT length. We note that while the utilized transient plane source method is only capable of measuring the out-ofplane conductivity, given that BNNTs are randomly distributed in the measured composite, composite thermal conductivity is likely isotropic and the in-plane thermal conductivity is likely comparable to the out-of-plane thermal conductivity.…”

supporting

confidence: 72%

Tunable Piezoelectricity of Multifunctional Boron Nitride Nanotube/Poly(dimethylsiloxane) Stretchable Composites

et al. 2020

View full text Add to dashboard Cite

Multifunctional piezoelectric materials with controllable mechanical and thermal properties could enable the next generation of soft interconnect materials, energy harvesters, and health monitors. [1] Boron nitride nanotubes (BNNTs) possess unique properties that have piqued the interest of the broader research community as the basis for these multifunctional materials. [2] BNNTs exhibit high mechanical strength, possessing a Young's modulus (Y) as high as 1.3 TPa [3] which outperforms most structural materials. BNNTs also show enhanced thermal properties including extreme thermal stability in air (>800 °C) [4] and thermal conductivity competitive with carbon nanotubes (CNT) [5] which, when combined with their electrically insulating nature, may enable the development of novel thermally conductive, electrically insulating materials. [6] Of particular interest are BNNTs' piezoelectric properties, [7] arising from polarization due to the electronegativity difference between boron and nitrogen atoms, which is predicted to result in the generation of a coupled electric dipole in response to deformation. [8] With the advent of techniques to produce large volumes of BNNTs such as the high temperature pressure (HTP) method, [9,10] interest has shifted to production of ensembles of BNNTs which translate the nanoscale properties of BNNTs to macroscale systems. The most widely employed technique to produce functional structures of BNNTs is suspension in a matrix material to form a functional composite. For instance, the dispersion of BNNTs in soft polymers has been shown to augment mechanical properties, nearly doubling the compressive modulus of polyurethane. [11] Similarly, BNNTs can be added to thermally insulating materials to enhance thermal conductivity, with addition of BNNTs to polymer-derived ceramic (PDC) enhancing thermal conductivity by 2100%. [12] Most saliently, BNNT/polymer composites represent the first realization of BNNT piezoelectricity at the macroscale. Polyimide composites containing strainaligned BNNTs demonstrate piezoelectric coefficients up to 4.81 pm V −1 , [13] and nanoporous BNNT thin films are predicted to possess piezoelectric responses competitive with commercial piezoelectric polymers. [14] Of particular interest are stretchable BNNT composites which are optimal for use as flexible thermal interconnects [15] and platforms for strain aligning nanotubes [16] Boron nitride nanotubes (BNNT) uniformly dispersed in stretchable materials, such as poly(dimethylsiloxane) (PDMS), could create the next generation of composites with augmented mechanical, thermal, and piezoelectric characteristics. This work reports tunable piezoelectricity of multifunctional BNNT/PDMS stretchable composites prepared via co-solvent blending with tetrahydrofuran (THF) to disperse BNNTs in PDMS while avoiding sonication or functionalization. The resultant stretchable BNNT/PDMS composites demonstrate augmented Young's modulus (200% increase at 9 wt% BNNT) and thermal conductivity (120% increase at 9 wt% BNNT) without losin...

show abstract

supporting

confidence: 72%

Tunable Piezoelectricity of Multifunctional Boron Nitride Nanotube/Poly(dimethylsiloxane) Stretchable Composites

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Microsized and nanosized thermally conductive fillers, such as graphite [185], graphene [105,186,187], CNTs [136,188,189], BN [190,191], ZnO [192], and diamond [193], have been incorporated into rubber. The thermal conductivities of the typical fillers are summarized in Table 1.…”

Section: Filler Types Sizes and Aspect Ratiosmentioning

confidence: 99%

Transport performance in novel elastomer nanocomposites: Mechanism, design and control

Guo

Tang

Zhang

2016

Progress in Polymer Science

130

View full text Add to dashboard Cite

“…The incorporation of highly thermal conductive fillers into polymers to develop high-performance thermal-conductive composites had been mostly desired so far. 5 The composites based on crystalline polymers (e.g., polypropylene, 6 polyamide-6, 7,8 ) provided enhanced thermal conductivity as compared to those based on amorphous polymers. And the thermal conductivities of com-posites were highly enhanced by using various thermal conductive fillers, such as, graphites, graphene, carbon nanotubes (CNTs), carbon fibers (CFs) and boron nitride (BN).…”

Section: Introductionmentioning

confidence: 99%

Morphology, Thermal and Crystallization Properties of Polyamide-6/Boron Nitride (BN) Thermal Conductive Composites

Xia¹,

Sun²,

Yang³

et al. 2018

View full text Add to dashboard Cite

A series of the thermal conductive polyamide-6 (PA6) composites filled with boron nitride (BN) were prepared by two methods, including melting method (MM) and solution method (SM). The thermal conductivity, morphology, crystallization behavior, thermal stability, and rheological properties of PA6 composites were investigated. The results showed that the thermal conductivity of two methods increased with increase in the filler content, the thermal conductivity of PA6/BN composites containing 40 wt% BN prepared by melting method was up to 1.02 W•m-1 •K-1 , while the thermal conductivity of PA6/BN composites prepared by solution method was up to 1.

show abstract

Improvement of Thermal Conductivity of Poly(dimethyl siloxane) Composites Filled with Boron Nitride and Carbon Nanotubes

Cited by 11 publications

References 26 publications

Tunable Piezoelectricity of Multifunctional Boron Nitride Nanotube/Poly(dimethylsiloxane) Stretchable Composites

Tunable Piezoelectricity of Multifunctional Boron Nitride Nanotube/Poly(dimethylsiloxane) Stretchable Composites

Transport performance in novel elastomer nanocomposites: Mechanism, design and control

Morphology, Thermal and Crystallization Properties of Polyamide-6/Boron Nitride (BN) Thermal Conductive Composites

Contact Info

Product

Resources

About