Efficient preparation of BN/UHMWPE composites with oriented thermal conductivity by powder solid-state extrusion

Liu, Zengquan; Yin, Xianze; Zhang, He; Wang, Mengmeng; Feng, Yanhong

doi:10.1016/j.compositesa.2023.107598

Cited by 11 publications

(2 citation statements)

References 43 publications

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“…They found that the injection-molded PC/BN 20 wt %/Al 2 O 3 40 wt % composite demonstrated an in-plane and through-plane λ as high as 1.52 and 1.09 W/mK, respectively, which were 485% and 474% higher than those of pure PC. 31 Liu et al 32 used a self-designed extruder to prepare UHMWPE-based composites with a directed isolated three-dimensional BN network to fabricate highly thermally conductive composites. They reported that the λ reached as high as 6.25 W/mK at BN 29.2 vol %.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Thermally Conductive and Wear-Resistant UHMWPE-Based Composites for Nuclear Shielding Applications

Sun,

Pan,

et al. 2024

Ind. Eng. Chem. Res.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Thermally Conductive and Wear-Resistant UHMWPE-Based Composites for Nuclear Shielding Applications

Sun,

Pan,

et al. 2024

Ind. Eng. Chem. Res.

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“…Therefore, compositing with thermally conductive fillers to form polymer-based composites is the most basic method to improve the thermal conductivity of polymers. However, the simple addition of high-thermal-conductivity fillers (metals, , carbon, , ceramics , ) can effectively increase the thermal conductivity of polymer-based composites, but it also brings a large contact thermal resistance, which results in the composites not being able to get the maximum increase in thermal conductivity. In most studies, these thermally conductive fillers are randomly dispersed in the polymer materials in a low-dimensional form.…”

Section: Introductionmentioning

confidence: 99%

In Situ Construction of High-Thermal-Conductivity and Negative-Permittivity Epoxy/Carbon Fiber@Carbon Composites with a 3D Network by High-Temperature Chemical Vapor Deposition

Jiang,

Xu,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Modern highly integrated microelectronic devices are unable to dissipate heat over time, which greatly affects the operating efficiency and service life of electronic equipment. Constructing high-thermal-conductivity composites with 3D network structures is a hot research topic. In this article, carbon fiber felt (CFF) was prepared by airflow netting forming technology and needle punching combined with stepped heat treatment. Then, carbon-coated carbon fiber felt (C@CFF) with a three-dimensional network structure was constructed in situ by high-temperature chemical vapor deposition (CVD). Finally, high-temperature treatment was used to improve the degree of crystallinity of C@CFF and further enhance its graphitization. The epoxy (EP) composites were prepared by simple vacuum infiltration–molding curing. The test results showed that the in-plane thermal conductivity (K ∥) and through-plane thermal conductivity (K ⊥) of EP/C@CFF-2300 °C could reach up to 13.08 and 2.78 W/mK, respectively, where the deposited carbon content was 11.76 vol %. The in-plane thermal conductivity enhancement (TCE) of EP/C@CFF-2300 °C was improved by 6440 and 808% compared to those of pure EP and EP/CFF, respectively. The high-temperature treatment greatly provides an improvement in thermal conductivity for the in-plane and the through-plane. Infrared imaging showed excellent thermal management properties of the prepared epoxy composites. EP/C@CFF-2300 °C owned an in-plane AC conductivity of up to 0.035 S/cm at 10 kHz, and Lorentz–Drude-type negative permittivity behaviors were observed at the tested frequency region. The CFF thermally conductive composites prepared by the above method have a broad application prospect in the field of advanced thermal management and electromagnetics.

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Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH₂‐CNTs hybrid fillers within the co‐continuous structure

Jing,

Meng,

Liu

et al. 2024

Polymer Composites

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Achieving high thermal conductivity in composites with low filler content is a major challenge in current research. In this paper, polypropylene (PP) and polyamide 6 (PA6) were used as polymer matrix, and the hybrid thermal conductive filler, formed by hexagonal boron nitride (h‐BN) and aminated carbon nanotubes (NH2‐CNTs), was integrated into matrix for the fabrication of thermal conductive composites (PP/PA6/h‐BN and PP/PA6/h‐BN@CNTs) via two‐step melt blending technology. The thermal conductive fillers were selectively distributed in a phase of the polymer matrix with a co‐continuous structure, forming a thermal conductive path with a three‐dimensional network structure. The results show that when the content of h‐BN reaches 25 wt%, the thermal conductivity of the PP/PA6/h‐BN and PP/PA6/h‐BN@CNTs composites was 199% and 300% higher than that of PP/PA6, respectively. Through testing the volume resistivity of the composites, it was confirmed that PP/PA6/h‐BN@CNTs composites maintain good electrical insulation. Both composites demonstrated remarkable thermal conductivity and outstanding electrical insulation. This research provides a facile way to prepare highly thermal conductivity polymer composites with excellent processing performances and electrical insulation.Highlights h‐BN@CNTs hybrid fillers with sandwich structure were prepared. A two‐step blending method was used to control the selective distribution of hybrid fillers in a phase of the polymer matrix with a co‐continuous structure. The hybrid filler formed a thermal conductive path with a three‐dimensional network structure in the collective. PP/PA6/h‐BN@CNTs composites demonstrated remarkable thermal conductivity, outstanding electrical insulation and favorable processing performances.

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Efficient preparation of BN/UHMWPE composites with oriented thermal conductivity by powder solid-state extrusion

Cited by 11 publications

References 43 publications

Fabrication of Thermally Conductive and Wear-Resistant UHMWPE-Based Composites for Nuclear Shielding Applications

Fabrication of Thermally Conductive and Wear-Resistant UHMWPE-Based Composites for Nuclear Shielding Applications

In Situ Construction of High-Thermal-Conductivity and Negative-Permittivity Epoxy/Carbon Fiber@Carbon Composites with a 3D Network by High-Temperature Chemical Vapor Deposition

Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH₂‐CNTs hybrid fillers within the co‐continuous structure

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Efficient preparation of BN/UHMWPE composites with oriented thermal conductivity by powder solid-state extrusion

Cited by 11 publications

References 43 publications

Fabrication of Thermally Conductive and Wear-Resistant UHMWPE-Based Composites for Nuclear Shielding Applications

Fabrication of Thermally Conductive and Wear-Resistant UHMWPE-Based Composites for Nuclear Shielding Applications

In Situ Construction of High-Thermal-Conductivity and Negative-Permittivity Epoxy/Carbon Fiber@Carbon Composites with a 3D Network by High-Temperature Chemical Vapor Deposition

Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH2‐CNTs hybrid fillers within the co‐continuous structure

Contact Info

Product

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Enhanced thermal conductivity of polypropylene/polyamide 6 composites via optimizing the selective distribution of h‐BN and NH₂‐CNTs hybrid fillers within the co‐continuous structure