Polyphenylene sulfide resin composition, method of preparing polyphenylene sulfide resin composition, and injection-molded article manufactured using polyphenylene sulfide resin composition

1. A polyphenylene sulfide resin composition, comprising:

(a) 25% to 75% by weight of a base resin;

(b) 0.1% to 10% by weight of a laser direct structuring (LDS) additive;

(c) 0.1% to 5% by weight of a plating seed generation promoter;

(d) 10% to 60% by weight of a glass fiber; and

(e) 0% to 40% by weight of a mineral filler, based on a total weight of the polyphenylene sulfide resin composition,

wherein the base resin comprises 95% by weight or more of a polyphenylene sulfide resin based on a total weight of the base resin, and

wherein the plating seed generation promoter is a polyol containing 4 or more hydroxyl groups.

2. The polyphenylene sulfide resin composition according to claim 1 , wherein the LDS additive is a copper-containing oxide.

3. The polyphenylene sulfide resin composition according to claim 2 , wherein the copper-containing oxide further comprises one or more selected from the group consisting of Sb, Cu, Pb, Ni, Fe, Sn, Cr, Mn, Ag, Au, and Co.

4. The polyphenylene sulfide resin composition according to claim 3 , wherein the copper-containing oxide is Cu(Cr, Mn) 2 O 4 .

5. The polyphenylene sulfide resin composition according to claim 1 , wherein the glass fiber is a glass fiber surface-treated with an epoxy silane-based compound.

6. The polyphenylene sulfide resin composition according to claim 1 , wherein the glass fiber has an average diameter of 5 μm to 20 μm and an average length of 1 mm to 10 mm.

7. The polyphenylene sulfide resin composition according to claim 1 , wherein the polyphenylene sulfide resin composition comprises the mineral filler in an amount of 5% to 40% by weight based on a total weight of the polyphenylene sulfide resin composition.

8. The polyphenylene sulfide resin composition according to claim 1 , wherein the mineral filler comprises one or more selected from the group consisting of glass beads, kaolin, talc, mica, clay, calcium carbonate, calcium silicate, silicon carbide, aluminum oxide, and magnesium oxide.

9. The polyphenylene sulfide resin composition according to claim 1 , wherein the polyphenylene sulfide resin is a linear polyphenylene sulfide resin.

10. The polyphenylene sulfide resin composition according to claim 1 , wherein the polyphenylene sulfide resin composition further comprises 0.1% to 5% by weight based on a total weight of the polyphenylene sulfide resin composition of one or more selected from the group consisting of flame retardants; antioxidants; light stabilizers; chain extenders; reaction catalysts; releasing agents; pigments; dyes; antistatic agents; antimicrobials; processing aids; metal deactivators; fluorine-based anti-dripping agents; inorganic fillers excluding glass fibers and mineral fillers; friction-resistant agents; and abrasion-resistant agents.

11. An injection-molded article, comprising the polyphenylene sulfide resin composition according to claim 1 .

12. The injection-molded article according to claim 11 , comprising a conductive pattern layer.

13. The injection-molded article according to claim 12 , wherein the injection-molded article is a built-in antenna.

14. A method of preparing a polyphenylene sulfide resin composition, the method comprising melt-kneading and extruding (a) 25% to 75% by weight of a base resin; (b) 0.1% to 10% by weight of a laser direct structuring (LDS) additive; (c) 0.1% to 5% by weight of a plating seed generation promoter; (d) 10% to 60% by weight of a glass fiber; and (e) 0% to 40% by weight of a mineral filler, based on a total weight of the polyphenylene sulfide resin composition, wherein the base resin comprises 95% by weight or more of a polyphenylene sulfide resin based on a total weight of the base resin, and wherein the plating seed generation promoter is a polyol containing 4 or more hydroxyl groups.