| abstract |
An automotive cooling system component comprising a polyamide 6,10 composition having good productivity, calcium chloride resistance, hydrolysis resistance, toughness and high temperature creep resistance. A tank body 125 constituting a header tank 120 of a radiator is made of a polyamide composition containing polyamides 6, 10, glass fibers, copper, and a nucleating agent. At this time, the polyamide composition contains (a) 48.9 to 79.988 weight percent of polyamide 6,10, based on the total weight of polyamide 6,10, glass fiber, copper and nucleating agent, and (b) glass 20 to 50 weight percent fiber, (c) 0.002 to 0.1 weight percent copper, and (d) 0.01 to 1.5 weight percent nucleating agent, with a half crystallization time The measurement result is 5 minutes or less. Moreover, as polyamide 6,10, the relative viscosity measured in 98% sulfuric acid is 2.3 to 2.9. [Selection] Figure 2 |