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.
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Buyaev et al. (2016) studied this question.
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