文献类型：期刊文献

英文题名：Multi-contact hybrid thermal conductive filler Al2O3@AgNPs optimized three-dimensional thermal network for flexible thermal interface materials

作者：Huang, Zhengqiang[1];Wu, Wei[1];Drummer, Dietmar[2];Liu, Chao[1];Wang, Yi[1];Wang, Zhengyi[1]

机构：[1]East China Univ Sci & Technol, Sino German Joint Res Ctr Adv Mat, Shanghai 200237, Peoples R China;[2]Friedrich Alexander Univ Erlangen Nuremberg FAU, Inst Polymer Technol, Erlangen, Germany

年份：2021

卷号：138

期号：35

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20211710243881);WOS:【SCI-EXPANDED(收录号:WOS:000640810600001)】；

基金：DFG, Grant/Award Number: GZ1448; National Natural Science Foundation of China

语种：英文

外文关键词：rubber; structure‐ property relationships; thermal properties

摘要：In this work, a multi-contact Al2O3@AgNPs hybrid thermal conductive filler was synthesized by in-situ growth method to fill high thermal conductivity polydimethylsiloxane (PDMS)-based composites to prepare TIMs. And the thermal conductivity, electrical conductivity, and mechanical properties of the composite materials were studied. During the synthesis process of the multi-contact hybrid filler, different concentrations of silver ions were reduced to generate silver nanoparticles and attached to the surface of Al2O3. Al2O3@AgNPs/PDMS thermally conductive composites were prepared by changing the filler addition. Using SEM, XPS, and XRD is used to characterize the morphology and chemical composition of Al2O3@AgNPs hybrid filler. The thermal conductivity of PDMS-based composites with different AgNPs content under 70 wt% filler loading was studied. The results show that the thermal conductivity of PDMS-based composites filled with 7owt%Al2O3@3AgNPs/PDMS multi-contact hybrid filler is 0.67 W/m center dot K, which is 3.72 times that of pure PDMS, and is higher than that of unmodified Al2O3 with the same addition amount. /PDMS composite material has a high thermal conductivity of 24%. This work provides a new idea for the design and manufacture of high thermal conductivity hybrid fillers for TIMs.