新型炭材料2019，Vol.34Issue(1)：106-110,5.DOI:10.1016/S1872﹣5805(19)60004﹣1
变温拉曼研究炭纤维增强聚酰亚胺复合材料的界面微观力学行为
Temperature﹣variable Raman scattering study on micromechanical properties of the carbon fiber reinforced polyimide composite film
摘要
Abstract
Temperature﹣variable Raman spectroscopy equipped with mapping function was used to investigate the micro﹣mechani﹣cal properties of a carbon fiber (CF) reinforced polyimide(PI)composite film using carbon nanotubes (3 wt% ) dispersed in PI as the stress sensor. The stress distributions on CFs and the interface region during heating from 25 to 300℃ were mapped based on the stress sensitive Raman G'band ( around 2679 cm﹣1 ) shifts of CNTs. Results indicate that thermal motion of PI chain affect the me﹣chanical properties when the CF/CNT﹣PI film was heated up to 300 ℃. Both CFs and interface region were compressively stressed below 200 ℃. The compressive stress decreased with temperature and was approximately eliminated at around 200℃. Tensile stress developed above 200 ℃ and increased with temperature, which was distributed mainly on CFs. Furthermore, the stress transfer be﹣tween CFs and matrix was less than 100% due to the thermal stress hysteresis in the PI matrix.关键词
炭纤维/界面微观力学/变温拉曼/应力Key words
Carbon fiber/Interfacial micro﹣mechanics/Variable temperature Raman/Stress分类
化学化工引用本文复制引用
冉敏,贾立双,程朝歌,吴琪琳..变温拉曼研究炭纤维增强聚酰亚胺复合材料的界面微观力学行为[J].新型炭材料,2019,34(1):106-110,5.基金项目
国家重点研发计划项目(2016YFB0303201) （2016YFB0303201）
上海市教育委员会科研创新重点项目(14ZZ069). Foundation item: National Key R&D Program of China (2016YFB0303201) （14ZZ069）
Research and Innovation Project of Shanghai Munici﹣pal Education Commission (14ZZ069). （14ZZ069）
