POLYAMIDE RESIN COMPOSITION FOR BLOW-MOLDED PRODUCTS EXPOSED TO HIGH-PRESSURE HYDROGEN, AND BLOW-MOLDED PRODUCT

摘要

The purpose of the present invention is to provide a polyamide resin composition which has excellent blow moldability and melt stability, can suppress a local increase in a residual strain of a molded article, and can provide a blow-molded article suppressing the occurrence of defects even if charging and discharging of high-pressure hydrogen gas are repeated. Provided is a polyamide resin composition for a blow-molded article exposed to high-pressure hydrogen gas. The polyamide resin composition contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260°C and a take-up speed at strand broke of 50 m/min or more when measured at 260°C.