采用CCF800H碳纤维和AC631双马树脂,制备了2种规格的预浸料及其复合材料,结合碳纤维微观形貌、起毛量及复合材料90°拉伸断面形貌等分析结果,对2种规格复合材料的性能进行了对比研究。结果表明:预浸料纤维面密度为133g/m2、树脂质量分数为33%的AC631/CCF800H复合材料(样品2)力学性能整体优于预浸料纤维面密度为145g/m2、树脂质量分数为35%的复合材料(样品1),样品2的0°拉伸强度比样品1高7.03%,层间剪切强度比样品1高9.09%,冲击后压缩强度比样品1高5.98%;样品2的树脂富集区较少,树脂分布更均匀,有效提高了复合材料的力学性能。
Two kinds of prepreg and composites were prepared by CCF800H carbon fiber and AC631 bismaleimide resin.The properties of two composites were compared and discussed combining the results including micro morphology,feather amount of carbon fiber and fracture surface morphology of composite's 90° tensile strength.The results indicated that mechanical properties of AC631/CCF800H composites with 133g/m2 prepreg fiber mass,33wt% resin mass content (Type 2) were better than AC631/CCF800H composites with 145g/m2 prepreg fiber mass,35wt% resin mass content (Type 1).Compared with Type 1,0°unidirectional tensile strength,inter-laminar shear strength and compressive strength after impact of Type 2 were increased by 7.03%,9.09%,and 5.98% separately.The resin concentration area of Type 2 was smaller and the resin distribution was more uniform,which effectively improved the mechanical properties of the composites.
[1] Chen J C,Harrison I R.Modification of polyacrylonitrile (PAN) carbon fiber precursor via post-spinning plasticization and stretching in dimethyl formamide (DMF)[J].Carbon,2002,40:25-45.
[2] 张海燕,李根臣,刘震宇,等.国产T700级碳纤维及复合性能表征[J].化工新型材料,2020,48(4):238-240.
[3] 曹春晓.一代材料技术,一代大型飞机[J].航空学报,2008,29(3):701-706.
[4] 杜善义.先进复合材料与航空航天[J].复合材料学报,2007,24(1):1-12.
[5] 刘大伟,李波,李刚,等.高柔性低面密度预浸料的制备与性能研究[J].宇航材料工艺,2016(4):40-42.
[6] 谢富原.先进复合材料制造技术[M].北京:航空工业出版社,2019.
[7] 康欣然,朱书华,何梦临,等.超薄碳纤维预浸料复合材料国内外发展现状和趋势[J].航空工程进展,2016,7(1):7-16.
[8] 张正,李世超,张金纳,等.预浸料的超薄化对碳纤维环氧树脂复合材料拉伸破坏行为的影响[J].复合材料学报,2020,37(4):800-807.
[9] 贺福.碳纤维及其应用技术[M].北京:化学工业出版社,2004.
[10] 文立伟,肖军,王显峰,等.中国复合材料自动铺放技术研究进展[J].南京航空航天大学学报,2015,47(5):637-649.
[11] Nishimura Isao.Sized carbon fiber strand,and prepreg containing the carbon fiber as reinforcing fiber and its molded product:JP,10266076[P].1998-10-06.
[12] 彭公秋,石峰晖,王迎芬,等.T700级炭纤维复合材料性能对比[J].新型炭材料,2016,31(2):176-181.
[13] 李东风,王浩静,贺福,等.T300和T700炭纤维的结构与性能[J].新型炭材料,2007,22(1):59-64.
[14] 彭公秋,杨进军,曹正华,等.碳纤维增强树脂基复合材料的界面[J].材料导报,2011,25(4):1-4.
[15] 张敏,朱波,王成国,等.用SEM研究碳纤维的表面及断口形貌[J].功能材料,2010,41(10):1731-1733.
[16] 张大兴,张佐光.CF/GF、CF/KF混杂纤维复合材料混杂效应实验与分析[J].新型炭材料,1997,12(3):46-51.
[17] 张宝艳,石峰晖,周正刚,等.碳纤维表面分析及双马树脂复合材料界面研究[J].武汉理工大学学报,2009,31(21):69-72.
