文献类型：期刊文献

英文题名：Synergistic construction of thermally conductive network in polybenzoxazine with boron nitride hybrid fillers

作者：Yi, Wang[1];Wu, Wei[1];Drummer, Dietmar[2];Shen, Wanting[1];Chao, Liu[1];Ning, Wang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Sino German Joint Res Ctr Adv Mat, Shanghai 200237, Peoples R China;[2]Friedrich Alexander Univ Erlangen Nuremberg, Inst Polymer Technol, D-91058 Erlangen, Germany

年份：2019

卷号：6

期号：12

外文期刊名：MATERIALS RESEARCH EXPRESS

收录：;EI(收录号：20201208327868);WOS:【SCI-EXPANDED(收录号:WOS:000516853500015)】；

基金：The joint research project was funded by the Chinese German Centre for the Promotion of Science via the NSFC and DFG (No. GZ1448).

语种：英文

外文关键词：nanocomposites; thermosets; thermal properties; high performance polymers; networks

摘要：Synergistic effect between micrometer boron nitride/nanometer boron nitride (mBN/nBN) at different mass ratio was investigated. Hybrid fillers of mBN/nBN at certain ratio (mBN:nBN = 1:1) performed best synergistic improvement of thermal conductivities of mBN/nBN/polybenzoxazine (mBN/nBN/PBz) composites fabricated via ball-milling followed by a hot-compression method. The effect of hybrid mBN/nBN fillers on thermally conductive coefficient (lambda), curing behavior and thermal stability was also studied. The lambda value was improved from 0.2276 W.m(-1).K-1 for pristine PBz to 0.9196 W.m-K-1.(-1) for (m/n)BN/PBz composites with 25 wt% hybrid filler. Agari model fitting revealed that mBN/nBN hybrid fillers constructed thermally conductive networks much easier than mBN did. The curing behavior and thermal stability of (m/n)BN/PBz composites were dampened with the addition of m/n hybrid fillers. Also, the addition amount of (m/n)BN hybrid filler had great influence on filler alignment in the matrix.