摘要
为研究高性能炭纤维的表面特征及炭纤维与环氧树脂基体之间的界面结合,获得高性能的结构型炭纤维/环氧树脂复合材料(CFRP).采用红外光谱、扫描电镜、X射线光电子能谱仪、单向板、NOL环、Φ150 mm压力容器等方法,对炭纤维/环氧树脂复合材料(CFRP)3种高性能炭纤维表面状态及复合材料性能进行了系统研究.结果表明,3种炭纤维表面涂层均能参与环氧基团固化反应在界面上形成化学键;UT500系列炭纤维表面轴向沟槽可与树脂基体通过物理"机械啮合"作用形成更强的界面结合;UT500-12K炭纤维/E-51单向板剪切强度为91.46 MPa,NOL环剪切强度为77.16 MPa,分别比T700-12K/E-51体系高约40%.CFRP复合材料中炭纤维的微观结构、表面活性是决定复合材料界面结合的重要因素,直接影响复合材料制品的含胶量,进而影响其综合力学性能.
Analysis on the surface of carbon fibers（T700SC-12K-50C、 UT500-12K-E30、UT500-24K-F402） and properties of the composite were performed by FTIR,SEM,XPS,NOL ring and Φ150 mm pressure vessel.The results showed that active groups on the coatings on the three kinds of fibers could react with epoxy group and form the chemical bonding.The UT500 carbon fibers ＂biting＂with epoxy matix by the curves on the surface and form a better interface.The shear strength of UT500-12K/E-51 unidirectional plate is 91.46 MPa,NOL ring is 77.16 MPa,which were about 40% higher than those of T700-12K/E-51 composite.The microstructure and surface activity of carbon fibers were crucial factors influencing the interface between fibers and epoxy matrix,which would influence the weight content of the resin and mechanical properties of CFRP composite
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2010年第6期815-818,823,共5页
Materials Science and Technology
关键词
炭纤维
界面
单向板
NOL环
压力容器
carbon fiber
interface
unidirectional plate
NOL ring
pressure vessel
