超高分子量聚乙烯针织物刺割过程摩擦磨损性能OA

Through wear resistance test of fabric surface,yarn pull-out test of knitted stitch and stab-cut-ting cycle experiment of fabric,and integrating the observation and analysis of the wear surface and chip morphol-ogy of the fabric by scanning electron microscope,the friction and wear properties of UHMWPE knitted structure was studied in the stab-cutting process.The results showed that the interfacial friction energy dissipation accoun-ted for a large proportion when the knife stabbed the weft knitted fabric.When the knife cut the knitted fabric horizontally,the surface of the fabric would be worn,showing as stitch distortion and flattened fabric,broken fi-bers of the fabric surface and excessive wear chips,short fiber ends sticking each other and blurred fabric struc-ture.The maximum peak of interfacial friction between the yarns of UHMWPE weft knitted fabric was 4 N when the knife stabbed the fabric vertically.The interfacial friction between the fabric and the knife occupied a large proportion in the vertical stabbing process,which was about 70%,and the holding friction accounted for about 81%of the total friction.