Fluorinated boron nitride nanosheets for high thermal conductivity and low dielectric constant silicone rubber composites DOI

Pan Zihao,

Qing Li, Dechao Hu

и другие.

Polymer Composites, Год журнала: 2024, Номер unknown

Опубликована: Сен. 9, 2024

Abstract Increasing miniaturization and integration of microelectronic devices have led to an unprecedented attention on heat dissipation signal transmission electronic equipment. However, the mostly used method enhance thermal conductivity polymers by adding thermally conductive fillers usually results in increase dielectric constant (D k ). It was still challenging synergistically achieve low D high polymer‐matrix composites. Herein, hydroxylated boron nitride nanosheet (BNNS‐OH) with a yield 35.67% prepared liquid ultrasonic exfoliation under assistance sodium cholate (SC), grafted (1H,1H,2H,2H‐perfluorodecyl) trimethoxy silane prepare fluorinated nanosheets (F‐BNNS), which can uniformly disperse silicone rubber (LSR) reduce LSR The composites 20 wt% F‐BNNS reached 0.489 W·m −1 ·K , showing 307.35% comparison pure (0.12 Meantime, as‐obtained LSR/F‐BNNS (20 wt%) is reduced from 3.4 2.6, loss f ) less than 0.012. facile rational design BNNS offers new insight for high‐end packaging materials. Highlights A treatment h‐BN proposed. achieved ultralow 2.63 via BNNS. Thermal increased LSR.

Язык: Английский

Thermal interface materials: From fundamental research to applications DOI Creative Commons
Baojie Wei,

Wenmei Luo,

Jianying Du

и другие.

SusMat, Год журнала: 2024, Номер unknown

Опубликована: Сен. 23, 2024

Abstract The miniaturization, integration, and high data throughput of electronic chips present challenging demands on thermal management, especially concerning heat dissipation at interfaces, which is a fundamental scientific question as well an engineering problem—a death problem called in semiconductor industry. A comprehensive examination interfacial resistance has been given from physics perspective 2022 Review Modern Physics . Here, we provide detailed overview materials perspective, focusing the optimization structure compositions interface (TIMs) interact/contact with source sink. First, discuss impact conductivity, bond line thickness, contact TIMs. Second, it pointed out that there are two major routes to improve transfer through interface. One reduce TIM's ( R TIM ) TIMs strategies like incorporating conductive fillers, enhancing treatment techniques. other c by improving effective contact, strengthening bonding, utilizing mass gradient alleviate vibrational mismatch between source/sink. Finally, such challenges theories, potential developments sustainable TIMs, application AI design also explored.

Язык: Английский

Процитировано

20
Independent Control of Electrical and Thermal Properties of Polymer Composites for Low Thermal Resistance Interface Materials DOI Open Access

Shabas Ahammed Abdul Jaleel,

Mohamad Alayli,

Seongsu Cheon

и другие.

Advanced Engineering Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 29, 2025

Electrically insulating thermal interface materials (TIMs) are desired for certain applications to avoid electrical current leakage. However, it is more challenging achieve high conductivity ( κ ) due the noncoalescing nature of ceramic particles. Herein, independent control and TIMs reported, with aid low‐temperature coalescing silver nanoparticles (AgNPs), enhancing , decreasing total resistance R t while retaining insulation. The leakage‐free functionalized phase‐change material (OP) employed as a matrix. interaction between aluminum nitride (AlN) particles OP induces highest surface energy intrinsic adhesion energy, compared other particles, resulting in lowest elastic modulus . (1.7 W m −1 K (80.1 mm 2 OP‐AlN further improved by AgNP decoration (OP‐AlN/Ag). AlN coalesced exquisitely AgNPs (3 vol%), suppressing (<10 −9 S cm ). increased 58% (2.7 decreased 44% (45.0 electrical/thermal pathway may prove useful electrically but thermally highly conducting TIMs.

Язык: Английский

Процитировано

1
Effect of Flexible Chains on Thermal Conductivity of Liquid Crystalline Epoxy Resins DOI

Kyosun Ku,

Hyeonuk Yeo

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(21), С. 13449 - 13456

Опубликована: Окт. 18, 2024

Liquid crystalline epoxy resins (LCEs) have attracted scientific attention due to their excellent physical properties, including thermal conductivity. In this study, we report biphenyl (BPERn)─a series of LCEs─and intermolecular interaction depending on the network structure. Biphenyl derivatives liquid monomers were synthesized by introducing various lengths alkyl chains and functional groups at both ends side exhibited a mesomorphic orientation in specific temperature range. The BPERn prepared hot compression molding, employing hexamethylene diamine as curing agent. behavior was monitored polarizing optical microscopy differential scanning calorimetry. formation an LC observed during polymerization process. properties optimized using thermogravimetric analysis, calorimetry, dynamic mechanical conductivity measurements. microstructure X-ray scattering analysis. increased with flexible chain length, BPER8 longest reached 0.50 W/m·K. bulk specimens faster change than conventional commercial samples when infrared imaging camera. These results suggest improvement LCE suitable for application electronic materials.

Язык: Английский

Процитировано

4
Fluorinated boron nitride nanosheets for high thermal conductivity and low dielectric constant silicone rubber composites DOI

Pan Zihao,

Qing Li, Dechao Hu

и другие.

Polymer Composites, Год журнала: 2024, Номер unknown

Опубликована: Сен. 9, 2024

Abstract Increasing miniaturization and integration of microelectronic devices have led to an unprecedented attention on heat dissipation signal transmission electronic equipment. However, the mostly used method enhance thermal conductivity polymers by adding thermally conductive fillers usually results in increase dielectric constant (D k ). It was still challenging synergistically achieve low D high polymer‐matrix composites. Herein, hydroxylated boron nitride nanosheet (BNNS‐OH) with a yield 35.67% prepared liquid ultrasonic exfoliation under assistance sodium cholate (SC), grafted (1H,1H,2H,2H‐perfluorodecyl) trimethoxy silane prepare fluorinated nanosheets (F‐BNNS), which can uniformly disperse silicone rubber (LSR) reduce LSR The composites 20 wt% F‐BNNS reached 0.489 W·m −1 ·K , showing 307.35% comparison pure (0.12 Meantime, as‐obtained LSR/F‐BNNS (20 wt%) is reduced from 3.4 2.6, loss f ) less than 0.012. facile rational design BNNS offers new insight for high‐end packaging materials. Highlights A treatment h‐BN proposed. achieved ultralow 2.63 via BNNS. Thermal increased LSR.

Язык: Английский

Процитировано

2