Preparation and properties of aminated MXene cross-linked polyimide aerogels

Abstract

Polyimide (PI) aerogels with excellent properties have received a lot of attention, and the use of nanoparticles to improve the properties of aerogels has been investigated in the last few years. In this work, aminated functionalized MXene nanoparticles were successfully prepared as a cross-linking agent as well as an inorganic reinforcing phase, homogeneously embedded in PI aerogels, to synthesize a new PI composite aerogel. The results show that m-MXene can act as a cross-linking point to effectively maintain the network structure, which further improves the dimensional stability and compressive modulus. These PI composite aerogels have a high specific surface area, low density, low shrinkage and excellent mechanical properties.

Influence of the Second-Phase Resin Structure on the Interfacial Shear Strength of Carbon Fiber/Epoxy Resin

“…Although there have been many research papers on resin toughening modification [ 30 , 31 , 32 ], there is still a lack of research on the interface between epoxy resin and carbon fibers (CFs) for CF-reinforced resin matrix composite systems, which are currently used in a large number of applications. For such a CF and resin matrix, a large number of researchers have focused on CF, carrying out a huge number of modifications on the surface of CF and composites [ 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. However, many of these works can only be used for small specimens, and cannot be used for continuous production.…”