摘要
为提高高模量碳纤维复合材料的力学性能,研究改性氰酸酯、5228、4211与碳纤维结合面结合性能。用SEM、AFM、微脱粘仪、万能力学试验机等仪器设备,观察了碳纤维表面微观形貌、树脂基体与碳纤维结合面微观粘接情况,并对复合材料的宏观力学性能进行分析研究。结果表明,高模量碳纤维随着模量的提高,表层的缺陷与沟槽减少、表面活性降低,与树脂的结合面粘接强度减弱;改性氰酸酯与纤维的结合面粘接性能较好、5228次之、4211较差;树脂与纤维结合面粘接强度大的,其复合材料的力学性能好。
To improve the mechanical properties of high modulus carbon fibers,the interface bonding abilities of cyanate ester,epoxy 5228 and epoxy 4211 with carbon fibers were studied.In this paper,SEM,AFM,micro-dissociater and all-purpose mechanical tester were used to investigate surface micro configuration of carbon fibers,and the micro-bonding of resin matrix and carbon fiber surface.The macro mechanical properties of composites were also studied.It is found that with the increase of carbon fiber modulus,defects and channels on the surface decrease,surface activity drops and the bonding strength with resins is weaked.The bonding properties decrease with the order of modified cyanate ester,epoxy 5228 and epoxy 4211.The higher the bonding strength of resin with fiber,the better the mechanical capabilities of composites.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2011年第4期41-44,共4页
Aerospace Materials & Technology
关键词
高模量碳纤维
表面状态
树脂基体
匹配
结合面
粘接力
High modulus carbon fiber
Surface properties
Resin matrix
Compatibility
Binding surface
Bonding strength
