摘要
为研究不同碳纤维体积含量对复合材料力学性能的影响,以环氧树脂为基体,制备了不同混杂比的碳纤维-玻璃纤维(碳玻)层间混编织物复合材料,研究了不同碳纤维体积含量的碳玻混杂复合材料的拉伸性能、压缩性能及其破坏形貌。0°拉伸试验表明,混杂层合板的拉伸强度与模量及碳纤维的体积含量均呈正相关,0°拉伸强度最高可以达到899.92 MPa,模量最高可以达到73.58 GPa。在混杂纤维中,适当提高碳纤维体积含量,能有效提高复合材料的拉伸模量,混杂复合材料的拉伸失效方式主要为边缘剥离断裂。0°压缩试验表明,混杂层合板压缩强度最低值为552.56 MPa,最高可以达到603.16 MPa。碳纤维的体积含量每增加2%,0°压缩模量提升约6%。在90°拉伸试验中,碳玻混杂层合板较玻纤层合板的拉伸模量有小幅下降,拉伸强度基本不变,模量最大下降幅度为7.81%,拉伸强度最低为51.48 MPa。碳纤维的体积含量对混杂层合板的拉伸模量基本无影响,均约为12.10 GPa。
In order to study the effect of different carbon fiber volume content on the mechanical properties of composite,carbon fiber-glass fiber interlayer knit composite with different hybrid ratios were prepared and epoxy resin was used as the matrix. The tensile,compressive properties and failure morphology of carbon fiber/glass fiber reinforced epoxy resin composite with different carbon fiber volume content were studied. The 0° tensile test showed that the tensile strength and modulus of the hybrid laminates were positively correlated with the volume of carbon fiber. The tensile strength of 0°direction was up to 899.92 MPa and the modulus was 73. 58 GPa. A slight increment in the volume of carbon fiber in the hybrid fiber could effectively improve the 0°direction tensile modulus of the composite. The main tensile fracture of hybrid composite was stripped on the edge. The 0° compression experiment showed that the hybrid laminates had a minimum compressive strength of 552. 56 MPa and a maximum of 603. 16 MPa. As the carbon fiber volume content increased by nearly 2%,the 0° compression modulus increased by 6%. From the 90°tensile test could be seen that the tensile modulus of the carbon-glass hybrid laminates were slightly lower than that of the glass fabric laminates,and the tensile strength of all experimental laminates was equivalent. The90°tensile modulus decreased by 7. 81% to the maximum and the tensile strength was as low as 51. 48 MPa. The volume fraction of carbon fiber had little effect on the tensile modulus of the hybrid laminates,both of which were about 12. 10 GPa.
作者
张会丽
李风
ZHANG Huili;LI Feng(School of Material and Energy,Guangdong University of Technology,Guangzhou,Guangdong 510006,China)
出处
《塑料》
CAS
CSCD
北大核心
2020年第5期38-41,共4页
Plastics
关键词
碳纤维体积含量
碳玻混织物
环氧树脂
复合材料
失效破坏形貌
carbon fiber volume content
carbon-glass hybrid fabric
epoxy resin
composite
failure morphology
