TY - JOUR
T1 - 功能化碳化硅纳米线/液晶环氧复合材料的制备与导热性能
AU - Xiang, Xiaolian
AU - Ma, Zhonglei
AU - Shi, Lin
AU - Han, Lang
AU - Song, Xiaoning
AU - Shao, Liang
N1 - Publisher Copyright:
© 2022 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
PY - 2022/8
Y1 - 2022/8
N2 - Highly thermally-conductive polymer-based composites have important application value in the field of electronic equipment. Based on the “intrinsic-filled” synergistic effect, the liquid crystal epoxy functionalized SiC nanowires (SiCNWs-LCE)/liquid crystal epoxy composites with low filling amount and high thermal conductivity were prepared by the liquid phase blending method, using the synthesized intrinsic thermally-conductive liquid crystal epoxy as matrix and SiCNWs-LCE as highly thermally-conductive fillers. The chemical structures, crystallization behaviors of the liquid crystal epoxy and microstructures, chemical structures and thermal stability of the functionalized SiCNWs were analyzed. The influences of SiCNWs-LCE content on the thermal conductivity and thermal stability of the SiCNWs-LCE/liquid crystal epoxy composites were investigated in detail. The results show that the SiCNWs functionalized by silane coupling agent and liquid crystal epoxy have good dispersibility. The “intrinsic-filled” synergistic effect endows the SiCNWs-LCE/liquid crystal epoxy composite with excellent thermal conduc-tive properties. The thermal conductivity of SiCNWs-LCE/liquid crystal epoxy composites increases with the SiCNWs-LCE content. Compared with the pure liquid crystal epoxy resin, the SiCNWs-LCE/liquid crystal epoxy composites exhibit an increased thermal conductivity from 0.33 W/(m·K) to 0.72 W/(m·K) with an improvement of 118%.
AB - Highly thermally-conductive polymer-based composites have important application value in the field of electronic equipment. Based on the “intrinsic-filled” synergistic effect, the liquid crystal epoxy functionalized SiC nanowires (SiCNWs-LCE)/liquid crystal epoxy composites with low filling amount and high thermal conductivity were prepared by the liquid phase blending method, using the synthesized intrinsic thermally-conductive liquid crystal epoxy as matrix and SiCNWs-LCE as highly thermally-conductive fillers. The chemical structures, crystallization behaviors of the liquid crystal epoxy and microstructures, chemical structures and thermal stability of the functionalized SiCNWs were analyzed. The influences of SiCNWs-LCE content on the thermal conductivity and thermal stability of the SiCNWs-LCE/liquid crystal epoxy composites were investigated in detail. The results show that the SiCNWs functionalized by silane coupling agent and liquid crystal epoxy have good dispersibility. The “intrinsic-filled” synergistic effect endows the SiCNWs-LCE/liquid crystal epoxy composite with excellent thermal conduc-tive properties. The thermal conductivity of SiCNWs-LCE/liquid crystal epoxy composites increases with the SiCNWs-LCE content. Compared with the pure liquid crystal epoxy resin, the SiCNWs-LCE/liquid crystal epoxy composites exhibit an increased thermal conductivity from 0.33 W/(m·K) to 0.72 W/(m·K) with an improvement of 118%.
KW - functionalized SiCNWs
KW - high heat resistance
KW - liquid crystal epoxy
KW - synergistic effect
KW - thermal conductivity composites
KW - “intrinsic-filled”
UR - http://www.scopus.com/inward/record.url?scp=85137910669&partnerID=8YFLogxK
U2 - 10.13801/j.cnki.fhclxb.20211008.003
DO - 10.13801/j.cnki.fhclxb.20211008.003
M3 - 文章
AN - SCOPUS:85137910669
SN - 1000-3851
VL - 39
SP - 3747
EP - 3756
JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
IS - 8
ER -