摘要
采用热解碳(PyC)原位改性碳纤维(CF),制备改性碳纤维增强聚酰亚胺树脂复合材料(PI-C/Cf)。采用热重分析、静态热氧老化等手段表征材料的耐热性能。发现该方法能显著提升复合材料的耐热性能,材料初始分解温度达到了540℃,结合复合材料的高温磨损试验,发现该材料在450℃的磨损率低于1×10-6 m^(3)/mm,具有较好的高温抗磨损性能,是一种新型的高温抗磨复合材料。在此基础上,结合PI-C/Cf复合材料的微观形貌和元素分布,研究了材料的耐高温、抗磨损机理。
Carbon fiber was modified in situ by pyrolytic carbon,modified carbon fiber reinforced polyimide matrix composites(PI-C/Cf)were prepared.The heat resistance of the materials was characterized by TGA,static thermal oxygen aging;it is found that the method can effectively improve the heat resistance of the materials,and the initial decomposition temperature is above 540℃.Combined with the high temperature wear test of the composite materials,it is found that the wear rate of the materials at 450℃ is less than 1×10-6 mm^(3)/mm,which has good high temperature wear resistance.By analyzing the thermal oxygen aging mechanism of PI-C/Cf composites,it is found that the chemical structure of the matrix resin is the main factor affecting the heat resistance of the composites.
作者
任海洋
徐菁
梁磊
俞鸣明
任慕苏
孙晋良
Haiyang Ren;Jing Xu;Lei Hang;Mingming Yu;Musu Ren;Jinliang Sun(Research Center for Composite Materials,Shanghai University,Shanghai 200444,China;Shanghai Plastics Research Institute Co..Ltd,Shanghai 201702,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2021年第3期40-49,58,共11页
Polymer Materials Science & Engineering
基金
上海市青年科技启明星计划(17QC1401200)
广东省重点领域研发计划(2019B010929001)
国家重点研发计划(2017YFB1103400)。
关键词
热解碳
聚酰亚胺
耐热性能
抗磨损性能
pyrolytic carbon
polyimide
heat resistance
wear performance
