Low-velocity impact performance of ultra-high molecular weight polyethylene/aramid-polyester core-spun yarn hybrid composites

The impact resistant composite has excellent energy absorption efficiency, but the structure and material selection of the composite have great influence on its energy absorption. In order to explore the effect of structure on the energy absorption of Ultra-high molecular weight polyethylene (UHMWPE) composites and the application potential of new aramid core-spun yarn and new polyester core-spun yarn in impact resistant composites. The UHMWPE composites with different fiber orientations and stacking sequences structure, as well as the new hybrid composites containing aramid core-spun yarn and polyester core-spun yarn were tested by low-velocity impact test and scanning electron microscope (SEM) observation. The differences of energy absorption of UHMWPE composites with different structures and the advantages of the new hybrid composites were analyzed. The results show that the energy absorption of the 45 degrees/0 degrees/90 degrees/-45 degrees UHMWPE composite is 15% and 86% higher than that of the 0 degrees/90 degrees/0 degrees/90 degrees UHMWPE composite and the 0 degrees/90 degrees/45 degrees/-45 degrees UHMWPE composite, respectively, which is the best structure among the three composites. The energy absorption performance of the composites introduced with aramid core-spun yarn and polyester core-spun yarn were improved by 223% and 202%, respectively, so that the energy absorption performance was significantly improved by new yarns.

Automated summary

The structure of the Ultra-high molecular weight polyethylene (UHMWPE) composites has a significant impact on their energy absorption capabilities. In this study, the effect of different fiber orientations and stacking sequences on the energy absorption of UHMWPE composites was explored. Additionally, the potential application of new aramid core-spun yarn and new polyester core-spun yarn in impact resistant composites was investigated. The results demonstrated that the 45 degrees/0 degrees/90 degrees/-45 degrees UHMWPE composite exhibited the highest energy absorption among the tested composites, and the introduction of aramid core-spun yarn and polyester core-spun yarn significantly enhanced the energy absorption performance.