POLYMERS AND POLYMER MATRIX COMPOSITES |
|
|
|
|
|
Enhanced Thermal Conductivity of Epoxy Composites with Sucrose Modified Boron Nitride |
YANG Xueming1,2,*, HU Zongjie1,2, WANG Weichen1,2, LIU Qiang1,2, WANG Shuai1,2
|
1 School of Power Engineering, University of North China Electric Power, Baoding 071003,Hebei, China 2 Hebei Province Key Laboratory of Low-carbon High-efficiency Power Generation Technology, Baoding 071003,Hebei, China |
|
|
Abstract Epoxy resin has a series of advantages such as light weight, excellent anti-corrosion performance and excellent insulation performance, so it is widely used in many fields such as electrical equipment, high-voltage insulation system and aerospace. However, the intrinsic thermal conductivity of epoxy resin is low, about 0.11—0.19 W/(m·K). Such a low thermal conductivity is not conducive to the timely and effective heat dissipation of the system. Boron nitride nanosheets (BNNS) have broad application prospects in high-voltage insulation systems due to their excellent thermal conductivity and insulation properties. However, the complex preparation process and poor dispersibility of BNNS in liquids are currently the main factors that limit their wide application. A simple and effective sucrose-assisted mechanochemical peeling (SAMCE) method was used to realize the peeling and modification of BNNS at the same time. The h-BN obtained by the sucrose peeling modification was added to the epoxy resin. When the mass fraction of modified h-BN was 15%, the thermal conductivity of the composite material could reach 0.51 W/(m·K). At this time, the thermal conductivity of the composite material was 3.2 times that of the pure epoxy resin material, and the thermal conductivity was significantly improved. In order to explain the mechanism of modified h-BN to improve the thermal conductivity of epoxy resin composites, the interface thermal resistance between filler particles and matrix in the h-BN/epoxy composite before and after the modification was calculated based on the effective medium approximation (EMA) theoretical model. The calculated interface thermal resistance of the h-BN/epoxy resin composite material was 2.44×10-6 m2·K/W, and the interface thermal resistance of the modified h-BN/epoxy resin composite material was 4.73×10-7 m2 ·K/W, the interface thermal resistance of the modified h-BN/epoxy resin composite was about 1/5 of that before modification.
|
Published:
Online: 2023-02-08
|
|
Fund:National Natural Science Foundation of China (52076080). |
Corresponding Authors:
xuemingyang@ncepu.edu.cn.
|
|
|
1 Wang W, Xia Y. Insulating Materials, 2012, 45(1), 19 (in Chinese). 王文, 夏宇. 绝缘材料, 2012, 45(1), 19. 2 Li K S, Wang Q. Functional Materials, 2002(2), 136 (in Chinese). 李侃社, 王琪. 功能材料, 2002(2), 136. 3 Zhou W Y. Research on high thermal conductivity and insulating polymer composite materials. Master's Thesis, Northwestern Polytechnical University, China, 2007 (in Chinese). 周文英. 高导热绝缘高分子复合材料研究. 硕士学位论文, 西北工业大学, 2007. 4 Zhao J Q, Meng F C, Shen J B, et al. Chemical Industry and Engineering, 2020, 37(3), 67 (in Chinese). 赵敬棋, 孟凡成, 申景博, 等. 化学工业与工程, 2020, 37(3), 67. 5 Peng P. Preparation and research of high thermal conductivity epoxy resin composites. Master's Thesis, Shanghai Jiaotong University, 2011 (in Chinese). 彭鹏. 高导热环氧树脂复合材料的制备与研究. 硕士学位论文, 上海交通大学, 2011. 6 Yu J H. Preparation and properties of high thermal conductivity polymer matrix composites. Master's Thesis, Shanghai Jiaotong University, China, 2012 (in Chinese). 虞锦洪. 高导热聚合物基复合材料的制备与性能研究. 硕士学位论文, 上海交通大学, 2012. 7 Wang T T. Electric-thermal field research on stator main insulation of air-cooled turbo-generator. Master's Thesis, Beijing Jiaotong University, China, 2019 (in Chinese). 王婷婷. 空冷汽轮发电机定子主绝缘的电-热场研究. 硕士学位论文, 北京交通大学, 2019. 8 Weng L, Wang H B, Zhang X R, et al. Nano, 2018, 13(11), 1850133. 9 Meng X, Du X B. High Voltage, 2016, 1(1), 34. 10 Liew K M, Lei Z X, Zhang L W. Composite Structures, 2015, 120, 90. 11 Song S H, Park K H, Kim B H, et al. Advanced Materials, 2013, 25(5), 732. 12 Li P M, Zhong C W, Tong Q M, et al. Electronic Components and Materials, 2011, 30 (11), 26 (in Chinese). 李攀敏, 钟朝位, 童启铭, 等. 电子元件与材料, 2011, 30(11), 26. 13 Du B X, Du Q, Li J, et al. High Voltage Technology, 2018, 44 (8), 2646. 14 Hsieh C Y, Chung S L. Journal of Applied Polymer Science, 2010, 102(5), 4734. 15 Hou G, Cheng B, Ding F, et al. ACS Applied Materials & Interfaces, 2015, 7(4), 2873. 16 Dong H, Wen B, Zhang Y, et al. ACS Omega, 2017, 2(5), 2344. 17 Chen Y M, Ting J M. Carbon, 2002, 40(3), 359. 18 Li J, Qi S, Zhang M, et al. Journal of Applied Polymer Science, 2015, 132(33), 42306. 19 Zhang X X, Wen H, Chen X Y, et al. Energies, 2017, 10(5), 692. 20 Ma Z N, Zhong B, Wang P Q, et al. Materials Reports B: Research Papers, 2016, 30(6), 65 (in Chinese). 马振宁, 钟博, 王培侨, 等. 材料导报:研究篇, 2016, 30(6), 65. 21 Lin Z Y, Mcnamara A, Liu Y, et al. Composites Science and Technology, 2014, 90, 123. 22 Wang W, Cao W R, Chen T T, Journal of Composite Materials, 2018, 35(2), 275 (in Chinese). 汪蔚, 曹万荣, 陈婷婷. 复合材料学报, 2018, 35(2), 275. 23 Gao L D, Li X, Zhang X Z, et al. Journal of Composite Materials, 2022, 39(6), 2599 (in Chinese). 高利达, 李祥, 张效重, 等. 复合材料学报, 2022, 39 (6), 2599. 24 Chen J, Huang X Y, Zhu Y K, et al. Advanced Functional Materials, 2017, 27(5), 1604754. 25 Chen S H, Xu R Z, Liu J M, et al. Advanced Materials, 2019, 31(10), 129. 26 Wang Z, Zhu Y J, Ji D, et al. Chemistryselect, 2020, 5(12), 3567. 27 Gu J, Zhang Q, Jing D, et al. Polymers for Advanced Technologies, 2012, 23(6), 1025. 28 Lee D, Lee S, Byun S, et al. Journal of Composites Part A, 2018, 107, 217. 29 Nan C W, Birringer R, Clarke D R, et al. Journal of Applied Physics, 1997, 81(10), 6692. 30 Pan C, Zhang J Q, Kou K C, et al. International Journal of Heat and Mass Transfer, 2018, 120, 1. |
|
|
|