Processing and properties of PMR polyimide composites reinforced with 3D woven glass fabric
3D orthogonal woven composites have higher delaminate resistance and impact damage resistance than laminated composites. PMR type polyimide composites are advanced high temperature polymer matrix composites frequently used in a variety of aerospace applications. In this study, 3D orthogonal woven fabric reinforced PMR type polyimide composites were prepared from 3D orthogonal woven glass fiber performs and PMR type polyimide matrix resin, which derived from 4,4’-methylenediamine (MDA), diethyl ester of 3,3’,4,4’-oxydiphthalic acid (ODPE), monoethyl ester of cis-5-norbornene-endo-2,3-dicarboxylic acid (NE). The rheological property of the PMR polyimide matrix resins was investigated. From the results of analysis, a two-step impregnation/hot-compression method can be established for the composites processing. In the first step, the 3D fabric preforms were impregnated with polyimide resin in a vacuum oven and heated up to 200 ℃ for degassing the volatiles and by-products. In the second step, composites were compressed. The glass transition temperature (Tg) and the decomposition temperature at 5% of weight loss (T5) were higher than 540 ℃ and 700 ℃, respectively. The internal structure was observed by a microscope. The resulting composites also exhibited good mechanical properties.
XIE Jianfei ZHANG Yingchen CHENG Sichen QIU Yiping
College of Textile, Donghua University, Shanghai 201620, P.R.China
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
426-429
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）