RESIN COMPOSITION OF POLYAMIDE FOR AUTOMOBILE RADIATOR

摘要

A polyamide resin composition for car radiators is provided to realize improved heat resistance and chemical resistance including resistance against calcium chloride and anti-freezing agent, while maintaining good mechanical properties such as tensile strength and elongation. A polyamide resin composition for car radiators comprises: (a) 100 parts by weight of a polyamide resin containing polyamide 66 resin and polyamide 612 resin in a weight ratio of 65:35-75:25; (b) 0.1-0.3 parts by weight of a glycidyl-based reactive compatibilizer; (c) 30-35 parts by weight of glass fibers having a particle diameter of 10-12 micrometers and coated with 0.1-0.3 wt% of a silane coupling agent; (d) 0.1-0.3 parts by weight of an amine crosslinking agent and 0.01-0.1 parts by weight of a silane crosslinking agent; (e) 0.3-0.5 parts by weight of a phenolic anti-oxidant and 0.2-0.4 parts by weight of a phosphite-based anti-oxidant; (f) 0.5-1.0 parts by weight of an imide-based anti-hydrolyzing agent; and (g) 0.2-0.4 parts by weight of a montan-based lubricant.