2D Mo 2 CT x Reinforced Polyimide Nanocomposites for Enhancement of Surface Tribological Performance at Elevated Temperatures

• Published in: Advanced materials interfaces Vol. 10; no. 7
• Main Authors: Li, Haonan, Wang, Libo, Li, Liang, Li, Han, Dai, Yahui, Hu, Qianku, Zhou, Aiguo, Liu, Xuqing
• Format: Journal Article
• Language: English
• Published: 01-03-2023
• ISSN: 2196-7350; 2196-7350
• DOI: 10.1002/admi.202201563

Abstract
In order to improve the high‐temperature friction and wear properties of polyimide (PI), Mo
2
CT
x
/PI nanocomposite materials are prepared by using 2D Mo
2
CT
x
MXene as reinforcement. Compared with the properties of pure PI, Mo
2
CT
x
/PI nanocomposites exhibit significant improvement on thermal stability, hardness, and tribological performance. Especially, the addition of Mo
2
CT
x
can reduce friction coefficient and wear rate of PI significantly at different temperatures ranging from room temperature (RT) to 200 °C. The hardness and the thermo‐degradation temperature of composites increase due to the formation of an organic inorganic structure. In addition, this structure helps to form a protective film containing Mo
2
CT
x
nanoflakes, iron oxide, molybdenum oxide, and organic compounds during friction, and improve the tribological properties of PI composite.