Investigation of the attributes of multi-walled carbon nanotubes in cryogenic environments after epoxy matrix curing

The enhancement of mechanical properties in composite materials at cryogenic temperatures is a critical challenge addressed in this study, particularly targeting applications in aerospace engineering, such as the development of materials for spacecraft structures and in the storage and transportation of liquefied gases, representing a significant advancement in the field of cryogenic engineering materials. Using multi-walled carbon nanotubes (MWNTs) in epoxy matrixes, this study addresses a long-standing issue of poor interfacial adhesion while setting a new benchmark for composite mechanical performance under extreme conditions, focusing on the integration of MWNTs into epoxy resin matrixes. Poor interfacial adhesion between matrix and reinforcing nanomaterials results in up to 50% lower reinforcing efficiency than in composites without these interfacial challenges. Aerospace and cryogenic storage materials will become more durable and efficient by addressing this challenge. New research avenues are opened, particularly in developing advanced composite materials for extreme environments. The results of this study lay the groundwork for further investigation into the optimization of nanomaterial integration and novel material combinations, which could lead to breakthrough material science advancements. An ultrasonic dispersion technique is used to strengthen the interfacial bonding of MWNTs. The results demonstrate that optimal concentrations of MWNTs enhance the tensile strength, elongation at break, and fracture toughness of composites. A cryogenic mechanical property enhancement is achieved with MWNTs by epoxy-based composites. This study suggests that composite materials containing MWNTs could be used for cryogenic applications to improve mechanical integrity under extreme conditions. This offers a promising path to developing materials with cryogenic properties.