FLAME-RETARDANT POLYAMIDE RESIN COMPOSITION AND EXTRUSION MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide a flame-retardant polyamide resin composition maintaining excellent inherent characteristics of a polyamide resin such as moldability and mechanical characteristics.SOLUTION: The polyamide resin composition includes a polyamide resin (a) and a polyamide resin (b) having a solubility parameter different from the polyamide resin (a). The polyamide resin (a) and/or the polyamide resin (b) contains a polyamide resin (polyamide 5X) having a structure corresponding to a polycondensation product obtained by a polycondensation reaction using a diamine containing pentamethylenediamine and a dicarboxylic acid as monomer components. The absolute value of difference of the solubility parameter SPa of the polyamide resin (a) and the solubility parameter SPb of the polyamide resin (b) is in a range of 0.2-3.7, and any one of the polyamide resin (a) and the polyamide resin (b) is formulated as a composition in which a flame-retardant is previously formulated.