This contribution deals with the preparation of concentrates consisting of copolyamides from ε-caprolactam and nylon salts prepared from adipic acid and 1-(2-aminoethyl) piperazine, and from adipic acid and diethylenetriamine, as well as the evaluation of their basic properties. PA 6 fibres modified with 5, 10 and 20 wt. % of these concentrates were prepared by two drawing processes, and their mechanical properties,( tensile strength, Young modulus and elongation at break) and orientation factors were evaluated. With respect to their thermal properties, all the concentrates are more or less semicrystalline compounds suitable as additives for semicrystalline PA 6 fibres. Mechanical properties depend on the type of concentrate and conditions of the drawing process. A lower amount of concentrate in modified fibres and concentrates with a lower amount of comonomers in copolyamide, Cloisite nanoadditive, a lower speed of drawing and an optimal drawing ratio assure the same or better mechanical properties, mainly the tensile strength, in comparison with non modified PA 6 fibres.

 

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Mechanical Properties of PA 6 Fibres Modified with Copolyamides and Nanoclays

Research and development

Authors:

  • Kristofič Michal
    Department of Fibres and Textile Chemistry, Faculty of Chemical and Food Technology, Institute of Polymer Materials, Slovak University of Technology in Bratislava, Bratislava, Slovakia
  • Ujhelyiová Anna (j/w)
  • Vassová Iveta (j/w)
  • Michlík Peter
    Institute of Man-Made Fibres in Svit, Svit, Slovakia
  • Brejka Ondrej (j/w)
  • Ryba Jozef
    Department of Fibres and Textile Chemistry, Faculty of Chemical and Food Technology, Institute of Polymer Materials, Slovak University of Technology in Bratislava, Bratislava, Slovakia

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Abstract:

This contribution deals with the preparation of concentrates consisting of copolyamides from ε-caprolactam and nylon salts prepared from adipic acid and 1-(2-aminoethyl) piperazine, and from adipic acid and diethylenetriamine, as well as the evaluation of their basic properties. PA 6 fibres modified with 5, 10 and 20 wt. % of these concentrates were prepared by two drawing processes, and their mechanical properties,( tensile strength, Young modulus and elongation at break) and orientation factors were evaluated. With respect to their thermal properties, all the concentrates are more or less semicrystalline compounds suitable as additives for semicrystalline PA 6 fibres. Mechanical properties depend on the type of concentrate and conditions of the drawing process. A lower amount of concentrate in modified fibres and concentrates with a lower amount of comonomers in copolyamide, Cloisite nanoadditive, a lower speed of drawing and an optimal drawing ratio assure the same or better mechanical properties, mainly the tensile strength, in comparison with non modified PA 6 fibres.

 

Tags: PA 6 fibres, modification, copolyamide, nanoclay, mechanical properties.

Citation: Krištofič M., Ujhelyiová A., Vassová I., Michlík P., Brejka O.; Mechanical Properties of PA 6 Fibres Modified with Copolyamides and Nanoclays. FIBRES & TEXTILES in Eastern Europe 2011, Vol. 19, No. 4 (87) pp. 41-45.

Published in issue no 4 (87) / 2011, pages 41–45.

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