Short carbon fiber-reinforced PMR polyimide composites with improved thermo-oxidative and hygrothermal stabilities
文献类型：期刊论文
| 作者 | Chen, JS; Yang, SY; Tao, ZQ; Hu, AJ; Gao, SQ; Fan, L |
| 刊名 | HIGH PERFORMANCE POLYMERS
 |
| 出版日期 | 2006-06-01 |
| 卷号 | 18期号:3页码:265-282 |
| 关键词 | Polyimide Composite Short Carbon Fiber Thermal-oxidative Stability Hygrothermal Stability |
| ISSN号 | 0954-0083 |
| DOI | 10.1177/0954008306059586 |
| 英文摘要 | A series of short carbon fiber-reinforced polyimide composites (SCF/PI) with different SCF loadings was prepared by thermal curing of B-staged molding powders, which were obtained by impregnating short carbon fibers with PMR monomer solution in ethyl alcohol, followed by thermally baking up to 220 degrees C. The B-staged molding powders possess good melt-flowing characteristics and processing properties. Experimental results demonstrated that the fully-cured SCF/PI composites exhibited high thermal stability with the glass transition temperatures determined by dynamic mechanical analysis (DMA) of 412-432 degrees C and the decomposition temperatures at 5% of weight loss in the range 497-512 degrees C. The SCF/PI composites also had good mechanical properties, which were affected by the SCF loading. The tensile strength and the flexural strength of SCF/PI composites increased as the SCF loadings increased and then decreased gradually. SCF-20/PI has the highest tensile strength of 101 MPa and SCF-10/PI gave the highest flexural strength of 154 MPa. The SCF/PI composites exhibited a great improvement in impact toughness in comparison with PMR-15. Despite the impact strength of SCF/PI being slightly decreased as the SCF loading was increased, it was still within the range of 15-23 J cm(-2). Furthermore, SCF/PI composites exhibited excellent thermal-oxidative and hygrothermal stabilities. The SCF/PI composites showed a weight loss of less than 6% after isothermal aging for 500 h at 320 degrees C in air. There was no significant difference in thermogravimetric analysis (TGA) and DMA curves for SCF-20/PI after hygrothermal treatment at 120 degrees C under 2 atm for 50 h. |
| 语种 | 英语 |
| WOS记录号 | WOS:000238111600003 |
| 出版者 | SAGE PUBLICATIONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59171]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Fan, L |
| 作者单位 | Chinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, JS,Yang, SY,Tao, ZQ,et al. Short carbon fiber-reinforced PMR polyimide composites with improved thermo-oxidative and hygrothermal stabilities[J]. HIGH PERFORMANCE POLYMERS,2006,18(3):265-282. |
| APA | Chen, JS,Yang, SY,Tao, ZQ,Hu, AJ,Gao, SQ,&Fan, L.(2006).Short carbon fiber-reinforced PMR polyimide composites with improved thermo-oxidative and hygrothermal stabilities.HIGH PERFORMANCE POLYMERS,18(3),265-282. |
| MLA | Chen, JS,et al."Short carbon fiber-reinforced PMR polyimide composites with improved thermo-oxidative and hygrothermal stabilities".HIGH PERFORMANCE POLYMERS 18.3(2006):265-282. |
入库方式： OAI收割
来源：化学研究所
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