scholarly journals Solvent-assisted encapsulation of boron nitride in polystyrene for high-efficient heat dissipation

2021 ◽  
pp. 107325
Author(s):  
Weifang Han ◽  
Mengyuan Chen ◽  
Wei Li ◽  
Yuchao Li ◽  
Chunhua Ge ◽  
...  
Author(s):  
Thomas Pietri ◽  
Benjamin J. Wiley ◽  
Jean-Pierre Simonato

Carbon ◽  
2021 ◽  
Vol 177 ◽  
pp. 107-114
Author(s):  
Xiaofang Li ◽  
Chunlei Tan ◽  
Juantao Jiang ◽  
Shaoyi Wang ◽  
Fenghua Zheng ◽  
...  

2018 ◽  
Vol 38 (8) ◽  
pp. 767-774 ◽  
Author(s):  
Liang Wang ◽  
Luchong Zhang ◽  
Andreas Fischer ◽  
Yuhua Zhong ◽  
Dietmar Drummer ◽  
...  

Abstract High performance composite of polyamide 6 (PA6)/flame retardant (FR)/hexagonal boron nitride (hBN) was prepared via twin screw extrusion, followed by injection molding. The heat dissipation of the composite was significantly improved by incorporating 40 vol% of hBN, and the corresponding thermal conductivity was up to 5.701 W/(m·K), nearly 17 times that of the PA6/FR composites. In addition, the combination effect of hBN and FR to the flame retardancy of the composites was observed, and the addition of hBN could dramatically enhance the flame retardancy of composites, achieving a UL94 V-0 rating with a limited oxygen index (LOI) value of 37%. This multifunctional modification would broaden the application field of PA6 composites in light-emitting diode (LED) lamps, electronic products, and so on.


2018 ◽  
Author(s):  
Zonglin Gu ◽  
Shengtang Liu ◽  
Xing Dai ◽  
Serena Chen ◽  
Zaixing Yang ◽  
...  

Membrane filtration processes for water desalination have been greatly improved thanks to rapid development of nanoporous 2-dimentional (2D) materials. Nanoporous graphene and molybdenum disulfide have proved to show promising properties for desalination. In this study, we detailly investigated the desalination performance of a different nanoporous 2D material, nanoporous boron nitride (BN), by Molecular Dynamics simulation. Our calculations demonstrated that nanoporous BN allows for rapid water permeability with effective salt rejection. The permeability is not only two orders of magnitude higher than existing commercial techniques but also much higher than nanoporous graphene and molybdenum disulfide membranes. We further showed that the pores with B-h edges or with N-h edges present different desalination efficiency. Compared to N-h pores, B-h pores have better desalination performance in term of higher water flux. To the best of our knowledge, nanoporous BN is the 2D material having the highest water permeability thus far while maintaining high salt rejection. Overall, our results shed light on the potential advantages of using nanoporous BN for water purification.


2019 ◽  
Vol 32 (3) ◽  
pp. 324-333 ◽  
Author(s):  
Ting Fei ◽  
Yanbao Li ◽  
Baocheng Liu ◽  
Chengbo Xia

Polymer-based composites with high thermal conductivity have great potential application as thermal management materials. This study was devoted to improving the thermal conductivity of the flexible thermoplastic polyurethane (TPU) by employing boron nitride (BN) as heat filler. We prepared flexible and thermally conductive TPU/BN composite via solution mixing and hot pressing. The thermal conductivity of the TPU/BN composite with 50 wt% BN (32.6 vol%) reaches 3.06 W/m·K, approximately 1290% enhancement compared to that of pure TPU (0.22 W/m·K). In addition, the thermal conductivity of our flexible TPU/BN composite with 30 wt% BN is almost not varied (a decrease of only 2.5%) after 100 cycles of mechanical bending, which indicates the high stability of heat conduction of our flexible TPU/BN composite under mechanical bending. The maximum tensile strength of the TPU/BN composite with 5 wt% BN is 48.9 MPa, 14% higher than that of pure TPU (43.2 MPa). Our flexible and highly thermally conductive TPU/BN composites show promise for heat dissipation in various applications in the electronics field.


2018 ◽  
Vol 216 (2) ◽  
pp. 1800512
Author(s):  
Seok Jin Bhang ◽  
Hyunjoong Kim ◽  
Kyung Rae Kim ◽  
Jinhwan Park

2017 ◽  
Vol 28 (22) ◽  
pp. 225704 ◽  
Author(s):  
Zhongwei Zhang ◽  
Shiqian Hu ◽  
Jie Chen ◽  
Baowen Li

Sign in / Sign up

Export Citation Format

Share Document