Improved Thermal Conductivity and Thermomechanical Properties of Epoxy Nanocomposites with Branched Polyethyleneimine‐Functionalized Hexagonal Boron Nitride Nanosheets

Tang, Bolin; Jiang, Tao; Fan, Gao-Chao; Cao, Mengyu; Chang, Shun-Hsyung; Yi, Jie; Li, Wei; Wang, Luxiang

doi:10.1002/slct.202204539

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…BN needs to be surface modified to achieve sufficient contact between the powder layer interface and the matrix liquid surface, when it dispersed inside the matrix 17–19 . After surface modification, the density of the powder increases, and the powder itself tends to have in‐plane orientation 20–22 . Unfortunately, this also reduces the out‐of‐plane thermal conductivity of the composite material 23,24 .…”

Section: Introductionmentioning

confidence: 99%

The preparation and feasibility analysis of magnetic orientation method in the study of thermal insulation composite materials in the field of electronic packaging

You,

Weng,

et al. 2024

Polymer Composites

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As an emerging field of current technological development, the heat dissipation performance of electronic packaging materials has become the key to determining product reliability. Therefore, the applied thermal interface materials (TIMs) need to simultaneously meet the performance indicators of thermal conductivity, mechanics, and insulation. Although BN had excellent in‐plane thermal conductivity and insulation performance, it is currently difficult to achieve vertical orientation of powder which leads the layered powder cannot complete a continuous and effective heat transfer path along the Z‐axis direction inside the composite material. In order to solve the above two problems, out‐of‐plane thermal conductive composite was prepared by introducing magnetic oriented method. In order to comprehensively evaluate the thermal conductivity, mechanical and electrical properties, BN@Fe3O4/EP magnetic oriented composites were compared with BN@PDA‐Al2O3/EP composite prepared by mechanical blending method. The vertical thermal conductivity of the magnetic oriented composite material was 2.24 W/(m·K) at 30 vol%, which was 3.39 times that of the blended composite material and 12.4 times that of pure EP. This proves that the magnetic oriented composite materials prepared by the research institute can meet the vertical heat transfer needs in the field of electronic packaging and have high research value in this area.Highlights BN@Fe3O4 core–shell particles were prepared with both thermal conductivity and magnetic controllability. The thermosetting composites were prepared by heated through preliminary gel point and then cured at high temperature. The orientation of powder inside the matrix was constructed, resulted in excellent out‐of‐plane heat transfer performance. Comparisons were made between various properties of magnetic oriented materials and conventional blend materials. The magnetic orientation method is feasible in the field of electronic packaging.

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Section: Introductionmentioning

confidence: 99%

The preparation and feasibility analysis of magnetic orientation method in the study of thermal insulation composite materials in the field of electronic packaging

You,

Weng,

et al. 2024

Polymer Composites

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Boron Nitride‐Supported Fluorescein Isothiocyanate for Improving Optical Performance and Stability

Su,

Lin,

Xing

et al. 2024

ChemistrySelect

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Organic luminogens play an indispensable role in optoelectronic devices, yet there is a pressing need to address their aggregation‐caused quenching (ACQ) and stability. Here we designed and prepared multilayered boron nitride nanosheets/fluorescein isothiocyanate (MBNNSs/FITC) composite phosphors with tunable photoluminescence by controlling the FITC content and annealing temperature. The research results indicate that MBNNSs/FITC with low or high loading of FITC is not conducive to enhancing the emission intensity of FITC, which can be attributed to the fact that low loading leads to a decrease in the content of fluorescent groups, while high loading promotes intermolecular aggregation of FITC dyes. Interestingly, the emission intensity of FITC in MBNNSs/FITC‐6 composite phosphors can be further enhanced by annealing treatment (200 °C), which can be ascribed to the suppression of the ACQ and effective energy transfer from the MBNNSs to the FITC. Moreover, the resultant composite phosphor displays outstanding thermal stability, remarkable photo stability and exceptional water‐resistance. This work provides a new design space for the development of non‐rare‐earth fluorescent materials using organic fluorescent dyes.

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Recent advances in improvement of thermal conductivity of epoxy-based nanocomposites through addition of fillers

Li,

Chu,

Jin

et al. 2024

Polymer

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Improved Thermal Conductivity and Thermomechanical Properties of Epoxy Nanocomposites with Branched Polyethyleneimine‐Functionalized Hexagonal Boron Nitride Nanosheets

Cited by 4 publications

References 46 publications

The preparation and feasibility analysis of magnetic orientation method in the study of thermal insulation composite materials in the field of electronic packaging

The preparation and feasibility analysis of magnetic orientation method in the study of thermal insulation composite materials in the field of electronic packaging

Boron Nitride‐Supported Fluorescein Isothiocyanate for Improving Optical Performance and Stability

Recent advances in improvement of thermal conductivity of epoxy-based nanocomposites through addition of fillers

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