国产T800H炭纤维与M40J石墨纤维层内混杂复合材料性能对比  

Mechanical properties of unidirectional carbon fiber composites based on domestic T800H carbon fiber,M40J graphite fiber and their mixtures

作　　者：彭公秋 李珂[4] 钟翔屿 李国丽 李伟东 包建文 王进[4] PENG Gong-qiu;LI Ke;ZHONG Xiang-yu;LI Guo-li;LI Wei-dong;BAO Jian-wen;WANG Jin(China Academy of Aeronautical Manufacturing Technology Composite Technology Center,Beijing 101300,China;AVIC Composite Corporation Ltd.,Beijing 101300,China;National Key Laboratory of Advanced Composites,Beijing 101300,China;Shen Yang Aircraft Design Institute,Shenyang 110035,China)

机构地区：[1]中国航空制造技术研究院复合材料技术中心,北京101300 [2]中航复合材料有限责任公司,北京101300 [3]先进复合材料重点实验室,北京101300 [4]沈阳飞机设计研究所,沈阳110035

出　　处：《新型炭材料》2020年第6期776-784,共9页New Carbon Materials

摘　　要：采用扫描电子显微镜(SEM)、拉曼光谱仪(Raman)、X射线光电子能谱仪(XPS)和X射线衍射仪(XRD)测试了国产T800H炭纤维和M40J石墨纤维的表面物理化学结构和结晶结构,对比分析了1∶1混杂比例的层内混杂复合材料与两种单一纤维增强复合材料性能,并观察了复合材料90°拉伸破坏试样断面形貌,研究了混杂复合材料混杂效应。结果表明:混杂复合材料0°拉伸模量遵循混合定律,0°拉伸强度和层间剪切强度表现为混杂负效应,90°拉伸强度和冲击后压缩强度表现为混杂正效应。相比于AC531/T800H复合材料,层内混杂复合材料0°拉伸模量提高了13%,相比于AC531/M40J复合材料,层内混杂复合材料冲击后压缩提高了35%,兼具高模量和优异的复合材料抗冲击性能。Three unidirectional carbon fiber composites impregnated with molten epoxy resin were prepared from T800H carbon fiber,M40J graphite fiber,and their mixtures containing alternating and parallel tows of 12 K fibers with a volume ratio of 1∶1.Their tensile strength and modulus in directions parallel(0°)and perpendicular(90°)to fiber axis as well as the compressive strength in quasi-isotropic(+45°/0°/-45°/90°)4S after a drop weight impact according to ASTM 7136/7137 were investigated.Results indicate that the 0°tensile modulus of the mixed composite observes the laws of mixing,the 0°tensile strength and inter-laminar shear stress negatively deviate from the laws of mixing,and the 90°tensile strength and the compressive strength positively deviate from the laws of mixing.Compared with the T800H composite,the 0°tensile modulus of the hybrid is increased by 13%.Compared with the M40J composite,the compressive strength of the hybrid is increased by 35%.The hybrid composite has both a high tensile modulus and a high compressive strength.

关 键 词：复合材料 层内混杂 混杂效应 力学性能 

分 类 号：TQ342.74[化学工程—化纤工业]