Conclusions
A high-strength fibre is obtained on spinning into precipitation baths containing 30–45 g/liter aluminum sulfate and 65–70 g/liter sulfuric acid, and having a bath density of 1.30–1.31 kg/m3. The relative breaking load of the fibre is 28 cN/tex, its elastic modulus in the wet state is 1380 MPa, and its elongation at break is 16%.
At an aluminum sulfate content of 15–17 g/liter in the precipitation bath, an increase in sulfuric acid concentration from 90 to 129 g/liter leads to an increase in relative breaking load and the relative strength of fibre in a loop.
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Literature cited
Inventer's certificate 852978 (1981) (USSR).
V. P. Kim, Khim, Volokna, No. 2, 34 (1986).
Additional information
Translated from Khimicheskie Volokna, No. 3, pp. 40–41, May–June, 1987.
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Mazhirina, G.S., Aref'eva, M.M., Safonova, T.S. et al. Effect of aluminum sulfate content of the precipitation bath on fibre physico-mechanical properties. Fibre Chem 19, 222–224 (1988). https://doi.org/10.1007/BF00543857
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DOI: https://doi.org/10.1007/BF00543857