Flame retardant polyamide resin composition and molded article using same

1. A flame retardant polyamide resin composition comprising:

(A) about 40 to about 60% by weight of a crystalline polyamide resin;

(B) about 10 to about 20% by weight of a polyphenylene sulfide resin;

(C) about 5 to about 15% by weight of a phosphinic acid metal salt flame retardant;

(D) about 20 to about 40% by weight of a glass fiber; and

(E) about 0.1 to about 1% by weight of a phosphite antioxidant.

2. The flame retardant polyamide resin composition of claim 1 , wherein the crystalline polyamide resin (A) is a semi-aromatic polyamide resin including benzene rings in a main chain thereof and having a melting point of about 290 to about 320° C.

3. The flame retardant polyamide resin composition of claim 1 , wherein the crystalline polyamide resin(A) comprises polytetramethylene adipamide (PA 46), polycaproamide/polyhexamethylene terephthalamide copolymer (PA6/6T), polyhexamethylene adipamide/polyhexamethylene terephthalamide copolymer (PA66/6T), polyhexamethylene adipamide/polyhexamethylene isophthalamide copolymer (PA66/6I), polyhexamethylene terephthalamide/polyhexamethylene isophthalamide copolymer (PA6T/6I), polyhexamethylene terephthalamide/polydodecaneamide copolymer (PA6T/12), polyhexamethylene adipamide/polyhexamethylene terephthalamide/polyhexamethylene isophthalamide copolymer (PA66/6T/6I), polyxylylene adipamide (PA MXD6), polyhexamethylene terephthalamide/poly 2-methylpentamethylene terephthalamide copolymer (PA 6T/M5T), polynonamethylene terephthalamide (PA 9T) or a combination thereof.

4. The flame retardant polyamide resin composition of claim 1 , wherein the polyphenylene sulfide resin (B) includes about 70 mol % or more of a repeating unit represented by following Chemical Formula 1:

5. The flame retardant polyamide resin composition of claim 1 , further comprises an additional flame retardant comprising an aromatic phosphoric acid ester compound, nitrogen-containing compound, nitrogen-phosphorous-containing compound, or a combination thereof.

6. The flame retardant polyamide resin composition of claim 1 , wherein the glass fiber (D) is a circular glass fiber having an average diameter of about 9 to about 12 μm and an average length of about 2 to about 4 mm.

7. The flame retardant polyamide resin composition of claim 1 , wherein the surface of glass fiber (D) is treated with a urethane compound.

8. The flame retardant polyamide resin composition of claim 1 , wherein the phosphite antioxidant (E) comprises triphenyl phosphite, tris(nonyl phenyl) phosphite, triisodecyl phosphite, diphenyl-iso-octyl-phosphite, bis(2,6-di-tert-butyl-4-methyphenyl)pentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl) phosphite or a combination thereof.

9. The flame retardant polyamide resin composition of claim 1 , further comprising a phenol antioxidant.

10. The flame retardant polyamide resin composition of claim 1 , further comprising an additive comprising a release agent, lubricant, compatibilizing agent, impact reinforcing agent, plasticizer, nucleating agent, colorant, or a combination thereof.

11. A molded article prepared from the flame retardant polyamide resin composition of claim 1 .

12. The molded article of claim 11 , wherein the molded article has a gas blister value on a surface of specimen thereof of 1 to 3, wherein the gas blister rating is measured after maintaining a 90 mm×50 mm×1 mm specimen at a temperature of 85° C. and a relative humidity of 85% for 24 hours or 48 hours measured in accordance with the IPC/JEDEC J-STD-020D standard for IR Reflow equipment.