A Study of the Properties of Mineral, Chemical, and Vegetable Fibers

Comparative tests of the following fibers are conducted under the same conditions: mineral (basalt, glass), carbon, chemical (polycaproamide, polyacrylonitrile, viscose fibers), and vegetable (bast fibers of linen, hemp, nettle). The diameter of a monofiber, linear density, breaking strength of a roving (a bundle of fibers) and microplastics, breaking tenacity, and gain ratio are assessed. Glass and basalt fibers have the highest linear density of 1200–2500 tex; carbon, 378 tex; chemical, 183 tex (except for PANF, which has 826 tex); and bast vegetable fibers, 440–630 tex. The breaking tenacity for glass rovings and basalt rovings is comparable of 240–264 mN/tex and is the highest of 597 mN/tex for carbon rovings; the gain ratio is 2–2.25. For chemical fibers, the breaking tenacity is 282–323 mN/tex (92 mN/tex in viscose ones) and the gain ratio is 0.5–0.9. Of vegetable fibers, the highest breaking strength of 93–102 mN/tex is in the fibers of linen and hemp, which exceeds this parameter for a viscose fiber; the gain ratio is 1.6 in hemp and 4.39 in linen. In fibers of nettle, the results are the lowest among vegetable fibers.