Synthesis and characterization of flexible and high-temperature resistant polyimide aerogel with ultra-low dielectric constant
文献类型：期刊论文
| 作者 | Zhang, X. M.1; Liu, J. G.2; Yang, S. Y.2 |
| 刊名 | EXPRESS POLYMER LETTERS
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 10期号:10页码:789-798 |
| 关键词 | thermal properties polyimide aerogel supercritical drying dielectric properties |
| 英文摘要 | A polyimide (PI) aerogel with excellent combined thermal and dielectric properties was successfully prepared by the polycondensation of 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA), 5-amino-2-(4-aminophenyl)benzoxazole (APBO) and octa(amino-phenyl) silsesquioxane (OAPS) crosslinker, followed by a supercritical carbon dioxide (scCO(2)) drying treatment. The developed PI aerogel exhibited an ultra-low dielectric constant (k) of 1.15 at a frequency of 2.75 GHz, a volume resistivity of 5.45.10(14) Omega.cm, and a dielectric strength of 132 kV/cm. The flexible PI aerogel exhibited an open-pore microstructure consisting of three-dimensional network with tangled nanofibers morphology with a porosity of 85.6% (volume ratio), an average pore diameter of 19.2 nm, and a Brunauer-Emmet-Teller (BET) surface area of 428.6 m(2)/g. In addition, the PI aerogel showed excellent thermal stability with a glass transition temperature (T-g) of 358.3 degrees C, a 5% weight loss temperature over 500 degrees C, and a residual weight ratio of 66.7% at 750 degrees C in nitrogen. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35342]  |
| 专题 | 化学研究所_高技术材料实验室 |
| 作者单位 | 1.Beijing Jiaotong Univ, Sch Elect Engn, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, X. M.,Liu, J. G.,Yang, S. Y.. Synthesis and characterization of flexible and high-temperature resistant polyimide aerogel with ultra-low dielectric constant[J]. EXPRESS POLYMER LETTERS,2016,10(10):789-798. |
| APA | Zhang, X. M.,Liu, J. G.,&Yang, S. Y..(2016).Synthesis and characterization of flexible and high-temperature resistant polyimide aerogel with ultra-low dielectric constant.EXPRESS POLYMER LETTERS,10(10),789-798. |
| MLA | Zhang, X. M.,et al."Synthesis and characterization of flexible and high-temperature resistant polyimide aerogel with ultra-low dielectric constant".EXPRESS POLYMER LETTERS 10.10(2016):789-798. |
入库方式： OAI收割
来源：化学研究所
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