Mechanical Properties of PA 6 Fibres Modified with Copolyamides and Nanoclays

作者：Kristofic Michal^*; Ujhelyiova Anna; Vassova Iveta; Michlik Peter; Brejka Ondrej; Ryba Jozef

来源：Fibres & Textiles in Eastern Europe, 2011, 19(4): 41-45.

• PA 6 fibres
• modification
• copolyamide
• nanoclay
• mechanical properties

This contribution deals with the preparation of concentrates consisting of copolyamides from epsilon-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.

• 出版日期2011-8