Effect of Structure and Morphology of Aramid Yarn on the Tribological Properties of Aramid/PTFE Fabric Composites
In order to study the effect of yarn structure and morphology on the tribological properties of fabric compos-ites,three kinds of aramid yarns with different structure and morphology were prepared from para-aramid fiber,namely fila-ment parallel yarn,filament twisted yam and short fiber twisted yarn.Three kinds of aramid/PTFE fabric composites were prepared by the same process.The tribological properties of the composites were evaluated by multi-specimen test machine.The structure and morphology,mechanical properties and tribological properties of aramid/PTFE hybrid fabrics and corre-sponding composites were analyzed.The experimental results show that the structure and morphology of aramid yarn can af-fect the tribological properties of aramid/PTFE fabric composites.This is because the structure and morphology of aramid yarn directly change the yarn strength,the yam pull-out strength,and the interfacial bonding force with the resin.The abra-sion resistance of the hybrid fabrics varies with wear conditions.When the load is relatively low,the wear rate of aramid short fiber twisted yarn/PTFE fabric composite is lower,while when the load is higher,the abrasion resistance of aramid fil-ament twisted yarn/PTFE fabric composite is better.
PTFE filament yarnaramid yarnstructure and morphologytribological property
万方数据
维普
