Anisotropically enhancing thermal conductivity of epoxy composite with a low filler load by an AlN/C fiber skeleton

Chen, Zihe; Zhao, Ce Zhou; Meng, Weijia; Sheng, Nan; Chen, Zhu; Rao, Zhonghao

doi:10.1016/j.ceramint.2022.03.030

Cited by 14 publications

(7 citation statements)

References 45 publications

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“…With the strong demand of lightweight, multi-functional and low-cost in various fields, carbon fiber epoxy resin matrix composites are generally applied in aerospace and other fields due to their virtue of high specific strength, good stability and so on. [1][2][3] They are usually applied in engineering structural materials in the form of composite laminates. However, the low thermal conductivity and the poor interlayer fracture toughness of epoxy matrix composites are prone to making the performance of the composites aged in service under high temperature conditions and delaminated by external force.…”

Section: Introductionmentioning

confidence: 99%

Synergetic improvement of the thermal conductivity and interlaminar fracture toughness of carbon fiber/epoxy composites by interleaving BN@ZnO particles

Zhang

Dong

et al. 2023

J of Applied Polymer Sci

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Synergetic improvement of the thermal conductivity and interlaminar fracture toughness of carbon fiber/epoxy resin composites (CF/EP) is a challenging research job. In this work, hexagonal boron nitride coated ZnO (BN@ZnO) particles were firstly prepared by sol-gel method and BN@ZnO composite laminates were manufactured by mold pressing process. X-ray diffraction,x-ray electron spectroscopy and scanning electron microscopy were used to analyze the structure, chemical components and morphology of the BN@ZnO and composite laminates. The effects of BN@ZnO on the impact strength, model II interlaminar fracture toughness (G IIC ) and thermal conductivity of composite laminates are investigated. The results show that the interlaminar fracture toughness and thermal conductivity of composite laminates are synergistically enhanced owing to the introduction of hybrid fillers with different dimensions and morphology. The thermal conductivity of the 10 wt% BN@ZnO coated composite laminates is increased by 78% and 90% at 25 and 100 C, respectively. The mechanical properties of composite laminates are enhanced. The model II interlaminar fracture toughness of 2 wt% BN@ZnO composite laminates is 15.4% higher than pure laminate. This work is of significance to realize the structural and functional integration of composite materials.

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Section: Introductionmentioning

confidence: 99%

Synergetic improvement of the thermal conductivity and interlaminar fracture toughness of carbon fiber/epoxy composites by interleaving BN@ZnO particles

Zhang

Dong

et al. 2023

J of Applied Polymer Sci

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“…One effective approach to enhancing the thermal conductivity of biodegradable polymers is incorporating high thermal/ conductive fillers through melt blending. 12 Commonly used thermal fillers include silicon carbide (SiC), 13,14 aluminum oxide (Al 2 O 3 ), 15 aluminum nitride (AlN), 16 and boron nitride (BN). 17−19 Nevertheless, high filler loadings can negatively impact mechanical properties and impose processing difficulties.…”

Section: ■ Introductionmentioning

confidence: 99%

Achieving High Thermal Conductivity, Good Electrical Insulation, and Balanced Mechanical Properties in Biodegradable Polymer Composites with Low Filler Content

Liu,

Pei,

Zeng

et al. 2023

ACS Appl. Polym. Mater.

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Biodegradable polymer composites usually require high filler loadings to increase their thermal conductivity, which can, in turn, compromise their mechanical and electrical insulation properties. In this study, we successfully developed biodegradable poly(butylene succinate) (PBS)-based composites with an oriented segregated double-filler network. The construction of this network involved melt blending PBS and carbon nanotubes (CNTs), followed by crushing to obtain the masterbatch (PBS/CNTs). Subsequently, boron nitride (BN) powder was mechanically mixed with the PBS/CNTs masterbatch, and the hot-pressed PBS/CNTs@BN sheets were subjected to forced uniaxial orientation manipulation. The resultant composites exhibited significantly in-plane thermal conductivity, reaching 1.0 W m–1 K–1 at 3 vol % CNTs and 5 vol % BN content and even reaching up to 2.2 W m–1 K–1 at 3 vol % CNTs and 20 vol % BN content, which is nearly 10-fold higher than that of pure PBS. Furthermore, composites containing 3 vol % CNTs and 5 vol % BN fillers exhibit good electrical insulation characteristics (5 × 10–10 S/cm) and maintained balanced mechanical properties (tensile strength of 37.7 MPa, impact toughness of 10.0 kJ/m2). Overall, the oriented segregated double-filler networks effectively endowed the biodegradable polymer composites with good thermal conductivity, electrical insulation, and acceptable mechanical properties at low filler concentrations. As a result, these multifunctional biodegradable polymer composites hold great promise for the thermal management of electronic devices.

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“…8,9 Though the metal and carbon materials can significantly enhance the TC of polymers, they also induce high electrical conductivity, which is not applicable under insulating field. 10 The ceramic particles, including alumina (Al 2 O 3 ), 11,12 silicon carbide (SiC), 13,14 aluminum nitride (AlN), 15,16 and boron nitride (BN), 17,18 have been widely used as filler in the preparation of thermally conductive composites owing to their relative high TC and outstanding insulation characteristics. 19,20 Among them, particular attention is paid to two-dimensional (2D) BN that possesses a specific structure with high TC (180 W/(mK)), high aspect ratio, and high resistivity, resistance to chemical solvent, strong antioxidative properties, and high electrical breakdown strength (794 kV/mm).…”

Section: Introductionmentioning

confidence: 99%

Noncovalent functionalization of boron nitride via chelation of tannic acid with Fe ions for constructing high thermally conductive polymeric composites

Wang

Hao

Yang

2022

Polymers for Advanced Techs

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With the advancement of integration and miniaturization of precise instruments, the heat accumulating in electronic components is urgently needed to dissipate for ensuring their service life. In this work, boron nitride (BN) was functionalized with tannic acid/ferric ions (TA/Fe) chelate complexes to synthesize high thermally conductive natural rubber (NR) composites (NR@TA/Fe‐BN). The stable TA/Fe chelate complexes improved the interfacial compatibility between BN and NR and enhanced the BN dispersion in the NR matrix, which led to the reduction of interfacial thermal resistance and the construction of heat transfer channels in NR composites. As a result, a relative high thermal conductivity (0.327 W/(mK)) by 30 vol% NR@TA/Fe‐BN composite was achieved, being 2.44 times that of pure NR (about 0.134 W/(mK)). In addition, the insulating NR@TA/Fe‐BN composites showed outstanding elongation at break (686%) and tensile strength (15.2 MPa). This highly efficient and green TA inspired modification is expected to find application in industrial manufacturing of thermally conductive polymeric composites.

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Anisotropically enhancing thermal conductivity of epoxy composite with a low filler load by an AlN/C fiber skeleton

Cited by 14 publications

References 45 publications

Synergetic improvement of the thermal conductivity and interlaminar fracture toughness of carbon fiber/epoxy composites by interleaving BN@ZnO particles

Synergetic improvement of the thermal conductivity and interlaminar fracture toughness of carbon fiber/epoxy composites by interleaving BN@ZnO particles

Achieving High Thermal Conductivity, Good Electrical Insulation, and Balanced Mechanical Properties in Biodegradable Polymer Composites with Low Filler Content

Noncovalent functionalization of boron nitride via chelation of tannic acid with Fe ions for constructing high thermally conductive polymeric composites

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