原位聚合和溶液混合聚合物纳米复合材料介电性能和导热性能的比较研究

Liyuan Xie, Yanhui Huang, Fei Liu, Xingyi Huang, P. Jiang
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引用次数: 0

摘要

采用原位原子转移自由基聚合(ATRP)法制备钛酸钡@聚甲基丙烯酸甲酯(BT@PMMA)纳米复合材料。结果表明,BT纳米颗粒被PMMA包覆,并在聚合物基体中分散良好。与传统溶液共混制备的BT/PMMA纳米复合材料相比,BT@PMMA纳米复合材料具有更高的导热性和更低的介电损耗。这一结果归因于BT纳米颗粒与PMMA基体之间的强界面结合。
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Comparative investigation on dielectric property and thermal conductivity of in situ polymerized and solution mixed polymer nanocoposites
Barium titanate@ poly (methyl methacrylate) (BT@PMMA) nanocomposites were prepared via in situ atom transfer radical polymerization (ATRP). It was observed that the BT nanoparticles were coated with PMMA and excellently dispersed in the polymer matrix. Compared with the BT/PMMA nanocomposites prepared by the traditional solution blending, BT@PMMA nanocomposites show higher thermal conductivity and lower dielectric loss. The result is attributed to the strong interfacial bonding between the BT nanoparticles and the PMMA matrix.
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