TY - JOUR
T1 - CNT 对树脂基和金属基材料的力学增强性能对比
AU - Zhu, Xiufang
AU - Lu, Guoxing
AU - Ma, Shuxiang
AU - Zhou, Hongyuan
AU - Zhang, Hong
N1 - Publisher Copyright:
© 2023 Beijing Institute of Technology. All rights reserved.
PY - 2023
Y1 - 2023
N2 - Carbon nanotubes (CNT) are widely used in composites because of their excellent mechanical properties, such as light weight, high strength, and stable chemical properties. In order to explore the reasons for the difference in mechanical strengthening effects of different matrices, in this paper, quasi-static tensile, bending tests and dynamic impact test were carried out on CNT composite resin matrix and aluminum alloy matrix, and the reinforcement mechanism of CNT in different matrices was further revealed. The results show that CNT could effectively improve the tensile strength and energy absorption properties of resin materials, and when the CNT content (mass ratio) was 0.7%, the reinforcement effect was the best. For aluminum alloy, the addition of CNT would reduce the strength of the material, and the higher the content of CNT, the lower the tensile strength of the material. The essence of the different mechanical strengthening effects of metal matrix and resin matrix after adding CNT lied in the different interfacial bonding between CNT and matrix. The initial state of resin matrix was liquid; after curing, CNT could be filled in the matrix network gap, so as to enhance the mechanical properties of materials; the aluminum alloy matrix was powder, and the dispersion of mechanical force caused CNT damage, and the existence of CNT caused the gap between the powders to become larger, weakening the mechanical properties of the material. The research results of this study provide a theoretical reference for subsequent research and development of a variety of matrix particles and fiber-reinforced composites.
AB - Carbon nanotubes (CNT) are widely used in composites because of their excellent mechanical properties, such as light weight, high strength, and stable chemical properties. In order to explore the reasons for the difference in mechanical strengthening effects of different matrices, in this paper, quasi-static tensile, bending tests and dynamic impact test were carried out on CNT composite resin matrix and aluminum alloy matrix, and the reinforcement mechanism of CNT in different matrices was further revealed. The results show that CNT could effectively improve the tensile strength and energy absorption properties of resin materials, and when the CNT content (mass ratio) was 0.7%, the reinforcement effect was the best. For aluminum alloy, the addition of CNT would reduce the strength of the material, and the higher the content of CNT, the lower the tensile strength of the material. The essence of the different mechanical strengthening effects of metal matrix and resin matrix after adding CNT lied in the different interfacial bonding between CNT and matrix. The initial state of resin matrix was liquid; after curing, CNT could be filled in the matrix network gap, so as to enhance the mechanical properties of materials; the aluminum alloy matrix was powder, and the dispersion of mechanical force caused CNT damage, and the existence of CNT caused the gap between the powders to become larger, weakening the mechanical properties of the material. The research results of this study provide a theoretical reference for subsequent research and development of a variety of matrix particles and fiber-reinforced composites.
KW - aluminum alloy
KW - carbon nanotubes
KW - composites
KW - epoxy resin
KW - tensile strength
UR - http://www.scopus.com/inward/record.url?scp=85178642712&partnerID=8YFLogxK
U2 - 10.15918/j.tbit1001-0645.2022.225
DO - 10.15918/j.tbit1001-0645.2022.225
M3 - 文章
AN - SCOPUS:85178642712
SN - 1001-0645
VL - 43
SP - 1187
EP - 1196
JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
IS - 11
ER -