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 YF ; Wang Z ; Li G ; Ding MX |
| 刊名 | high performance polymers
 |
| 出版日期 | 2010 |
| 卷号 | 22期号:1页码:95-108 |
| ISSN号 | 0954-0083 |
| 关键词 | 2 3 POLYIMIDES 3' TEMPERATURE 4'-BIPHENYLTETRACARBOXYLIC DIANHYDRIDE POLYMERS DIAMINES PENDENT DESIGN |
| 通讯作者 | ding mx |
| 中文摘要 | 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. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000274664400008 |
| 公开日期 | 2012-06-07 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/43910]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu YF,Wang Z,Li G,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 YF,Wang Z,Li G,&Ding MX.(2010).Thermal and Mechanical Properties of Phenylethynyl-Containing Imide Oligomers Based on Isomeric Biphenyltetracarboxylic Dianhydrides.high performance polymers,22(1),95-108. |
| MLA | Liu YF,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：长春应用化学研究所
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