Thermal and Mechanical Properties of Phenylethynyl-Containing Imide Oligomers Based on Isomeric Biphenyltetracarboxylic Dianhydrides
文献类型：期刊论文
| 作者 | Liu, Yanfeng; Wang, Zhen; Li, Gao; Ding, Mengxian |
| 刊名 | HIGH PERFORMANCE POLYMERS
 |
| 出版日期 | 2010-02-01 |
| 卷号 | 22期号:1页码:95-108 |
| 关键词 | Isomeric Imide Oligomers Biphenyltetracarboxylic Dianhydride Phenylethynyl Group |
| ISSN号 | 0954-0083 |
| DOI | 10.1177/0954008308101133 |
| 英文摘要 | In order to further improve both processability of imide oligomers containing pendent or/and terminal phenylethynyl groups and their cured T(g) values without sacrificing mechanical properties, isomeric dianhydrides, 2,2',3,3'-biphenyltetracarboxylic dianhydride (3,3'-BPDA) or 2,3',3,4'-biphenyl tetracarboxylic dianhydride (3,4'-BPDA), were introduced into main chain. The rigid and bent structure of the isomeric BPDAs can provide a good combination of melt flow while maintaining a high T(g). Phenylethynyl containing oligoimides were prepared from the reaction of isomeric dianhydrides (3,3'-BPDA, 3,4'-BPDA and 4,4'-BPDA), 4,4'-oxydianiline (4,4'-ODA), 3,5-diamino-4'-phenylethynyl benzophenone (DPEB) and 4-phenylethynylphthalic anhydride (4-PEPA) or phthalic anhydride (PA) at an approximate number average molecular weight of 2500 and 5000 g mol(-1). The imide oligomers from 3,3'-BPDA and 3,4'-BPDA exhibited good processability. The 3,3'-BPDA-based imide oligomers exhibited slightly lower melt viscosity and the cured resins exhibited similar T(g) values compared with those from 3,4'-BPDA. OI-7 and OI-8 each with a molecular weight of 2500 g mol(-1) had lower melt viscosities of 25 Pa s (342 degrees C) and 178 Pa s (344 degrees C) and higher cured T(g) at 367 degrees C and 365 degrees C. The cured films from OI-7, OI-8 showed good tensile properties and the elongations at break were around 10%. The neat resins from OI-7 and OI-8 had higher compressive strengths of 200 and 190 MPa. G827/OI-7 and G827/OI-8 exhibited comparable mechanical properities: flexural strengths of 1714 and 1826 MPa, flexural modulus of 130 and 124 GPa, and interlayer shear strengths of 95 and 101 MPa, respectively. |
| 语种 | 英语 |
| WOS记录号 | WOS:000274664400008 |
| 出版者 | SAGE PUBLICATIONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/69561]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ding, Mengxian |
| 作者单位 | Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yanfeng,Wang, Zhen,Li, Gao,et al. Thermal and Mechanical Properties of Phenylethynyl-Containing Imide Oligomers Based on Isomeric Biphenyltetracarboxylic Dianhydrides[J]. HIGH PERFORMANCE POLYMERS,2010,22(1):95-108. |
| APA | Liu, Yanfeng,Wang, Zhen,Li, Gao,&Ding, Mengxian.(2010).Thermal and Mechanical Properties of Phenylethynyl-Containing Imide Oligomers Based on Isomeric Biphenyltetracarboxylic Dianhydrides.HIGH PERFORMANCE POLYMERS,22(1),95-108. |
| MLA | Liu, Yanfeng,et al."Thermal and Mechanical Properties of Phenylethynyl-Containing Imide Oligomers Based on Isomeric Biphenyltetracarboxylic Dianhydrides".HIGH PERFORMANCE POLYMERS 22.1(2010):95-108. |
入库方式： OAI收割
来源：化学研究所
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