USE OF GLASS FIBRES HAVING A CIRCULAR CROSS-SECTION IN A MIXTURE COMPRISING A SEMI-AROMATIC POLYAMIDE AND AN ALIPHATIC POLYAMIDE FOR IMPROVING THE MECHANICAL PROPERTIES OF THE MIXTURE

摘要

The present invention relates to the use of circular section glass fibers in a mixture comprising at least one MXDZ polyamide, obtained from the polycondensation of meta-xylylenediamine (MXD), with a C6 aliphatic (Z) dicarboxylic acid. at C18, in particular at C6 to C12, and at least one aliphatic polyamide A obtained from the polycondensation of a unit chosen from: a C 6 to C 12 lactam, a C 6 to C 12 amino acid, and a unit XY obtained from the polycondensation of a C4 to C18, especially C4 to C12, aliphatic diamine (X) and a C6 to C18 aliphatic (Y) dicarboxylic acid, in particular C6 to C12, to glass fibers circular section and optionally at least one impact modifier and / or at least one additive, said circular section glass fibers and said mixture constituting a composition, said circular section glass fibers being present from 30 to 75% by weight, particular from 40 to 65% by weight and relative to the total weight of the composition, to improve the mechanical properties of said composition, including elongation at break, after its implementation, in particular by injection or compression molding.