Effect of chemical structure of aramide and polyoxadiazole fibers on friction of organoplastics

Resumo

Unlike aliphatic polyamides, the friction coefficient of polyaramides depends not only on the relative concentration of hydrogen bonds in a macromolecule unit, but also on the structural factor, which is related to various positions of the hydrogen bonds in a phenylene nucleus, in this case, the para- and metapositions. During dry friction, aramide organoplastics are characterized by a high coefficient of friction, while for materials based on polyoxadiazole fibers, a low and stable coefficient of friction is retained.