Significant improvement of thermal conductivities for BNNS/PVA composite films via electrospinning followed by hot-pressing technology

Yang, Xin; Guo, Yue; Han, Yixin; Liu, Ying; Ma, Tengbo; Chen, Minjiao; Kong, Jie; Zhu, Jiahua; Gu, Junwei

doi:10.1016/j.compositesb.2019.107070

Cited by 233 publications

(107 citation statements)

References 32 publications

Supporting

Mentioning

102

Contrasting

Order By: Relevance

“…The highest thermal conductivity of MDLC film in this work of 1.20 W m −1 K −1 with the addition of 15 wt% LCM in the PVA matrix was comparable of reported PVA composites (1.21 W m −1 K −1 ) with 30 wt% boron nitride (BNNS) fillers by directional freeze-drying method. 39 intrinsic thermally conductive polymers. The microscopic orderliness of polymer can be improved by employing highly ordered liquid crystalline monomers, liquid crystalline monomers also beneficial for reducing phonon scattering and improving the thermal conductivity of polymer matrix without creating additional interfaces which are significantly present in traditional filled thermally conductive polymers.…”

Section: Thermal Conductive Model and Measurement Of Mdlc Filmsmentioning

confidence: 99%

High thermal conductivity of liquid crystalline monomer‐poly (vinyl alcohol) dispersion films containing microscopic‐ordered structure

Gong

et al. 2020

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

The thermal conductivity of bulk polymers is usually very low, which is due to the amorphous domains where chains are randomly entangled, improving the degree of the chain alignment and forming a continuous thermal conduction network are expected to enhance the thermal conductivity. A series of liquid crystalline monomer-poly (vinyl alcohol) dispersion (MDLC) films with high thermal conductivity containing microscopic-ordered structure were prepared by introducing a highly ordered liquid crystalline monomer (LCM) exhibiting Smectic phase. The thermal conductivity of MDLC films was strongly related to the amount of LCM, which firstly increased and then decreased with the increase of LCM content. The thermal conductivity of MDLC film reached up to 1.20 W m −1 K −1 when the content of LCM was 15 wt% and rapidly decreased to 0.85 W m −1 K −1 as the content of LCM further increased to 25 wt%. LCM with low content (1-15 wt%) showed good fluidity, dispersity and interfacial compatibility in PVA molecular chains, which further increases the regularity of molecular chains alignment.

show abstract

Section: Thermal Conductive Model and Measurement Of Mdlc Filmsmentioning

confidence: 99%

High thermal conductivity of liquid crystalline monomer‐poly (vinyl alcohol) dispersion films containing microscopic‐ordered structure

Gong

et al. 2020

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…Substantial enhancement of thermal conductivity of polymer composites by using these methods has recently been demonstrated in Ref. .…”

Section: Introductionmentioning

confidence: 99%

Modeling Thermal Conductivity of Highly Filled Polymer Composites

Drozdov

Christiansen

2019

Polymer Engineering & Sci

View full text Add to dashboard Cite

The Kanari model is traditionally treated as an empirical relation to fit observations on the effective thermal conductivity of composites. By applying the integration embedding method, we demonstrate that this model provides an extension of the Halpin-Tsai and Fricke models to highly filled composites, and the only adjustable parameter in the governing equation is expressed in terms of the aspect ratio of filler particles and their aggregates. These assertions are confirmed by the analysis of observations on several polymer composites. FIG. 2. The relative thermal conductivity k c /k m versus volume fraction of filler Ф. Symbols: Experimental data [45] on composites with polystyrene ( -PS) and polyethylene (• -PE) matrices reinforced with MgO particles. Solid lines: Results of simulation with Eq. 23 with k m = 0.155 (PS), k m = 0.335 (PE), B = 3.15, and k f = 54.8 W/(mÁK).

show abstract

“…Due to the excellent comprehensive performances of thermal stability, chemical corrosion tolerance, oxidation resistance, neutron absorption, high thermal conductivity, electrical insulation and low dielectric constant, [1][2][3][4] hexagonal boron nitride (BN) holds great promise in various elds such as aerospace, high-temperature ltration, nuclear industry, and microelectronics. As typical BN materials, BN bers similar to anisotropic BNNSs enjoy wide attention owing to their unique properties provided by their high-aspect-ratio morphology.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9][10][11] In addition, the pyrolysis of a C 3 N 6 H 6 $2H 3 -BO 3 (M$2B) supra-molecule adduct is an alternative way and promising for large-scale production owing to the facile and eco-friendly fabrication of M$2B. [12][13][14] Unfortunately, the ceramic yield of M$2B is much lower ($20 wt%) than that of other reported polymeric precursors of BN, [15][16][17][18] for example, 57 wt% yield of poly [2,4,6-tris(iso-propylamino)borazine]. 17 This implies that substantial release occurs during thermal conversion from M$2B to the nal BN bers.…”

Section: Introductionmentioning

confidence: 99%

In situ molten phase-assisted self-healing for maintaining fiber morphology during conversion from melamine diborate to boron nitride

Wang

et al. 2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

Significant improvement of thermal conductivities for BNNS/PVA composite films via electrospinning followed by hot-pressing technology

Cited by 233 publications

References 32 publications

High thermal conductivity of liquid crystalline monomer‐poly (vinyl alcohol) dispersion films containing microscopic‐ordered structure

High thermal conductivity of liquid crystalline monomer‐poly (vinyl alcohol) dispersion films containing microscopic‐ordered structure

Modeling Thermal Conductivity of Highly Filled Polymer Composites

In situ molten phase-assisted self-healing for maintaining fiber morphology during conversion from melamine diborate to boron nitride

Contact Info

Product

Resources

About