Enhanced dielectric properties of high glass transition temperature PDCPD/BaTiO3 composites by frontal ring-opening metathesis polymerization

Enhanced dielectric properties of high glass transition temperature PDCPD/BaTiO3 composites by frontal ring-opening metathesis polymerization
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通过正面开环复分解聚合增强高玻璃化转变温度PDCPD/BaTiO3复合材料的介电性能

DOI:
10.1016/j.matlet.2021.131492
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发表时间:
2022-03
期刊:
影响因子:
3
通讯作者:
Yunsheng Ding
Yunsheng Ding
中科院分区:
材料科学3区
文献类型:
--
作者:
Lang Chen;Ping Wang;Li Yang;Jiacheng Ling;Chao Liu;Yi Wang;Shousheng Zhang;Shaojie Feng;Xiusheng Wu;Pei Xu;Yunsheng Ding

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采用正面开环复分解聚合(ROMP)原位制备了聚双环戊二烯(PDCPD)/羟基化钛酸钡(BTOH)和PDCPD/降冰片烯功能化钛酸钡(BTNA)复合材料。动态力学分析(DMA)结果表明,PDCPD/BTNA复合材料的玻璃化转变温度(Tg)高于PDCPD/BTOH,这主要是由于BTNA与PDCPD基体之间的界面亲和力增强所致。由于PDCPD和BTNA之间的界面极化,PDCPD/BTNA复合材料在100 Hz时具有较高的介电常数(20.2),而非导电降冰片烯基团阻止了泄漏电流的产生,并支持低损耗正切(0.017)。
Polydicyclopentadiene (PDCPD)/hydroxylated barium titanate (BTOH) and PDCPD/norbornene functionalized barium titanate (BTNA) composites have been in situ prepared by frontal ring-opening metathesis polymerization (ROMP). Dynamic mechanical analysis (DMA) results show that the glass transition temperature (Tg) of PDCPD/BTNA composites was higher than that of PDCPD/BTOH, which was mainly due to the enhanced interfacial affinity between BTNA and PDCPD matrix. The PDCPD/BTNA composites exhibited high dielectric constant (20.2 at 100 Hz) due to the interfacial polarization between PDCPD and BTNA, while the non-conductive norbornene groups prevented leakage current generation and supported low loss tangent (0.017).
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