Use of circular cross-section glass fibers to improve the mechanical properties of said mixtures in mixtures containing semi-aromatic polyamides and aliphatic polyamides

摘要

The present invention relates to a process of metabolizing C6 to C18, in particular C6 to C12 aliphatic (Z) dicarboxylic acids, to improve the mechanical properties of the composition, including elongation at break, especially after processing by injection or compression molding. At least one MXDZ polyamide obtained from polycondensation of xylylenediamine (MXD), and C6 to C12 lactam, C6 to C12 amino acids, and C4 to C18, in particular C4 to C12 aliphatic diamine (X), XY units obtained from polycondensation of C6 to C18, in particular C6 to C12 aliphatic dicarboxylic acids (Y), circular cross-section glass fibers and optionally at least one impact modifier and / or at least one additive A circular cross-section gas in a mixture comprising at least one aliphatic polyamide A obtained from the polycondensation of units selected from The circular cross-section glass fibers and the mixture constitute a composition, and the circular cross-section glass fibers are 30 to 75% by weight, in particular 40 to 65% by weight, based on the total weight of the composition. Relates to the use of circular cross-section glass fibers. [Selection figure] None