Silver doped boron nitride approach to improve the thermal conductivity of polyurethane composites

IF 2.6 4区 化学 Q3 POLYMER SCIENCE Journal of Polymer Research Pub Date : 2024-08-14 DOI:10.1007/s10965-024-04089-y
Shuangshuang Sun, Yang Wu, Yu Zhang, Yue-Ming Sun, Hongtao Lin, Ming Wang, Chuanzeng Wang, Shuhai Chen
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Abstract

High thermal conductivity composites have attracted considerable attention due to their extensive applications in electronic devices. In the present work, we propose a novel strategy by employing boron nitride doped silver nanoparticles (BN-Ag) to improve the thermal conductivity of polyurethane composites. The BN-Ag composite was prepared by depositing silver nanoparticles (AgNPs) onto the surface of boron nitride (BN), facilitating cross-linking between adjacent BN sheets. Interestingly, despite the low concentration of AgNPs at just 2.5% (The proportion is determined by the quantity of BN, and the subsequent statement remains unchanged), their thermal conductivity of BN-Ag/PU is significant enhanced by approximately 184%, while maintaining excellent thermal stability and high resistivity. Meanwhile, to further augment the thermal conductivity, a more noticeable improvement up to 236% without compromising its superior insulation properties (5.03 × 1013 Ω · cm) was recorded by doping BN-Ag/PU with silver nanowires (BN-Ag@AgNP/PU).

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采用掺银氮化硼方法提高聚氨酯复合材料的热导率
高导热复合材料因其在电子设备中的广泛应用而备受关注。在本研究中,我们提出了一种利用掺杂氮化硼的银纳米粒子(BN-Ag)来提高聚氨酯复合材料导热性的新策略。BN-Ag 复合材料是通过在氮化硼(BN)表面沉积银纳米粒子(AgNPs),促进相邻 BN 片之间的交联而制备的。有趣的是,尽管 AgNPs 的浓度很低,仅为 2.5%(比例由 BN 的数量决定,后面的说明保持不变),但 BN-Ag/PU 的热导率却显著提高了约 184%,同时还保持了出色的热稳定性和高电阻率。同时,为了进一步提高热导率,通过在 BN-Ag/PU 中掺杂银纳米线(BN-Ag@AgNP/PU),在不影响其优异绝缘性能(5.03 × 1013 Ω - cm)的情况下,热导率显著提高了 236%。
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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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