Effects and mechanism of graft modification on the dielectric performance of polymer–matrix composites
文献类型：期刊论文
| 作者 | Lai Maobai; Yu Shuhui; Sun Rong; Zeng Xiaoliang; Luo Suibin; Wong Ching-Ping |
| 刊名 | COMPOSITES SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2013 |
| 英文摘要 | With the development of electronics industry, polymeric dielectric materials with high energy storage density have become increasingly important for the miniaturization of electronic components. In this research work, enhanced permittivity was obtained by graft modification of the epoxy resin matrix. Polyethylene glycol (PEG) and chrome acetylacetonate (Cr Acac) were employed as graft modification reagents. Methyl tetrahydrophthalic anhydride (MeTHPA) was used as curing agent for epoxy resin, which also acted as a precursor for the graft modification reagents. The permittivity of the graft-modified epoxy resin was improved by 30%. With the modified epoxy resin as matrix and nano-sized barium titanate (BaTiO3, BT) as fillers, the dielectric composite film showed a high permittivity of 37.75 and a low tangent loss of 0.022 at the frequency of 1 kHz. In contrast, the composite film without modification showed a much lower permittivity of 24.83. FTIR and UV spectra analysis indicates that graft modification with PEG has induced a number of ester groups, which possess strong dipole polarity. The graft modification with Cr Acac created a new conjugate system with a strong polar center and high inducible polarizability. The two effects led to improved permittivity of the derived epoxy resin and composites. Beside that, it is also likely that a synergistic effect existed between the two modification reagents, which further enhanced the polarity of the cured epoxy resin. |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S0266353813003734 |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/4451]  |
| 专题 | 深圳先进技术研究院_集成所 |
| 作者单位 | COMPOSITES SCIENCE AND TECHNOLOGY |
| 推荐引用方式 GB/T 7714 | Lai Maobai,Yu Shuhui,Sun Rong,et al. Effects and mechanism of graft modification on the dielectric performance of polymer–matrix composites[J]. COMPOSITES SCIENCE AND TECHNOLOGY,2013. |
| APA | Lai Maobai,Yu Shuhui,Sun Rong,Zeng Xiaoliang,Luo Suibin,&Wong Ching-Ping.(2013).Effects and mechanism of graft modification on the dielectric performance of polymer–matrix composites.COMPOSITES SCIENCE AND TECHNOLOGY. |
| MLA | Lai Maobai,et al."Effects and mechanism of graft modification on the dielectric performance of polymer–matrix composites".COMPOSITES SCIENCE AND TECHNOLOGY (2013). |
入库方式： OAI收割
来源：深圳先进技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。