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Polyamide resin composition and molded article produced therefrom

  • US 10,457,796 B2
  • Filed: 12/29/2016
  • Issued: 10/29/2019
  • Est. Priority Date: 12/31/2015
  • Status: Active Grant
First Claim
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1. A polyamide resin composition comprising:

  • a base resin comprising a polyamide having an intrinsic viscosity (IV) of about 0.9 dL/g or less, and milled glass fibers; and

    carbon nanotube flakes having a size of about 1.0 mm to about 5.0 mm, wherein the carbon nanotube flakes are obtained by growing carbon nanotubes on glass fibers, followed by removing the glass fibers,wherein the polyamide resin composition has a spiral flow length of about 110 mm to about 160 mm, as measured on a specimen obtained by injection molding the polyamide resin composition in a 0.5 mm thick spiral-shaped mold under conditions of a molding temperature of 300°

    C., a mold temperature of 80°

    C., an injection pressure of 1,500 kgf/cm2 and an injection speed of 120 mm/s,wherein the polyamide resin composition has an amount of abrasion dust of about 0.1 mg or less, as measured after a boss and a rib manufactured using the polyamide resin composition are subjected to reciprocating motion at a rate of 50 cycles/min under a load of 2.5 kg for 2 hours, andwherein a molded article produced from the polyamide resin composition has a surface current discharge time of about 0.1 seconds or less, as measured by a decay time method.

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