High T-g, melt processable copolyimides based on isomeric 3,3' and 4,4'-hydroquinone diphthalic anhydride (HQDPA)
文献类型：期刊论文
| 作者 | Fang, Xingzhong; Mushtaq, Nafeesa; Xu, Lubo; Chen, Guofei; Sidra, Lala Rukh; Chen, Xiaoqi; Li, Yantao |
| 刊名 | POLYMER
 |
| 出版日期 | 2018 |
| 卷号 | 136页码:205-214 |
| 关键词 | Structure-property Relationships High Thermooxidative Stability Poly(Ether Imide)s Polyimide Fibers Bis(Ether Anhydride)s Aromatic Polyimides Dianhydride Units Benzimidazole Derivatives |
| 英文摘要 | To extend the upper operating temperature range of melt processable PIs, two series of end-capped copolyimides based on hydroquinone diphthalic anhydride (HQDPA) isomers were designed by varying the contents of appropriate diamines. Thus, copolyimides PI-(0a similar to 20a) based on 3,3'-HQDPA were prepared by varying the ratio of rigid 2-(4-aminophenyl)-5-aminobenzimidazole (BIA) and flexible 4,4'-oxydianiline (ODA). The resulting copolyimides demonstrated good properties, such as excellent solubility, high T-g ranging from 328 to 354 degrees C as determined by dynamic mechanical analyzer (DMA), besides, exhibited good thermal stability based on 5% weight loss temperature (T-5%) of 502-514 degrees C and low melt viscosity in the range of 291-935 Pa.s. Most importantly, PI-20a showed a good combination of low melt viscosity simultaneously with significantly high T-g (328 degrees C). Furthermore, this system was modified by copolymerization with different feed ratio of 4,4'-HQDPA isomer and produced another series PI-(20a similar to 20e), that exhibited high T-g in the range of 315-330 degrees C with T-5% of 502-543 degrees C and minimum complex viscosity in the range of 291-479 Pa.s. All PIs form tough and flexible films that have remarkable tensile strength and moduli in the range of 93-116 MPa and 3.7-4.7 GPa, respectively. (C) 2017 Elsevier Ltd. All rights reserved. |
| 学科主题 | Chemistry ; Electrochemistry ; Instruments & Instrumentation |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/16854]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Fang, Xingzhong,Mushtaq, Nafeesa,Xu, Lubo,et al. High T-g, melt processable copolyimides based on isomeric 3,3' and 4,4'-hydroquinone diphthalic anhydride (HQDPA)[J]. POLYMER,2018,136:205-214. |
| APA | Fang, Xingzhong.,Mushtaq, Nafeesa.,Xu, Lubo.,Chen, Guofei.,Sidra, Lala Rukh.,...&Li, Yantao.(2018).High T-g, melt processable copolyimides based on isomeric 3,3' and 4,4'-hydroquinone diphthalic anhydride (HQDPA).POLYMER,136,205-214. |
| MLA | Fang, Xingzhong,et al."High T-g, melt processable copolyimides based on isomeric 3,3' and 4,4'-hydroquinone diphthalic anhydride (HQDPA)".POLYMER 136(2018):205-214. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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