Published : 2021-01-15

Modification of polyamide 6 fibers with water-glass in the bath method


High temperature (HT) bath method was used to produce the flame-retardant polyamide 6 (PA6) fibers, analogous to dyeing using dispersed dyes. The modification process was carried out in a bath containing flame-retardant and a surfactant (dispersant). An ecological commercial product – so-called soda water-glass, i.e., aqueous sodium silicate solution (WG) – was used as flame-retardant. The resulting flame-retardant effect was evaluated on the basis of the limiting oxygen index (LOI) method. The thermal properties of the examined fibers were determined using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Basic mechanical testing of fibers was also performed. Fiber burning residues were characterized on the basis of photographs obtained by scanning electron microscopy (SEM). Changes in the supermolecular structure of PA6 fibers after the modification were discussed using wide-angle X-ray scattering (WAXS). As a result of the proposed modification of PA6 fibers a small but sustained increase in the flame-retardant effect was obtained.


PA6 fibers ; LOI ; TGA ; DSC ; WAXS ; SEM włókna PA6 ; LOI ; TGA ; DSC ; WAXS ; SEM





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Gawłowski, A., Fabia, J., Ślusarczyk, C., Brzozowska-Stanuch, A., Graczyk, T., & Janicki, J. (2021). Modification of polyamide 6 fibers with water-glass in the bath method. Polimery, 62(11-12), 861-867.