Multi-functional resin composite material and molded product using the same

1. A multi-functional resin composite material, comprising:

(A) a thermoplastic resin;

(B) a nickel-coated carbon fiber, wherein the nickel-coated carbon fiber (B) has a volume resistance of about 10 −4 Ω·m or less and a tensile strength of about 200 GPa or more;

(C) a carbon nanotube; and

(D) an inorganic material having a volume resistance of about 10 −3 Ω·m or less and a relative permeability of about 5000 or more.

2. The multi-functional resin composite material of claim 1 , wherein the multi-functional resin composite material comprises about 40 to about 80 wt % of the thermoplastic resin (A), about 10 to about 40 wt % of the nickel-coated carbon fiber (B), about 0.1 to about 2 wt % of the carbon nanotube (C), and about 3 to about 20 wt % of the inorganic material (D).

3. The multi-functional resin composite material of claim 1 , wherein the thermoplastic resin (A) comprises a polyamide resin, a polyester resin, a polyacetal resin, a polycarbonate resin, a polyimide resin, a polyphenyleneoxide resin, a polysulfone resin, a polyphenylene sulfide resin, a polyamide-imide resin, a polyethersulfone resin, a liquid crystal polymer, a polyetherketone resin, a polyetherimide resin, a polyolefin resin, a rubber modified vinyl-based copolymer resin, a polystyrene-based resin, or a combination thereof.

4. The multi-functional resin composite material of claim 1 , wherein the thermoplastic resin (A) comprises a crystalline resin.

5. The multi-functional resin composite material of claim 1 , wherein the nickel-coated carbon fiber (B) comprises a carbon fiber having a diameter of about 5 to about 12 μm and a length of about 3 to about 12 mm.

6. The multi-functional resin composite material of claim 1 , wherein the nickel-coated carbon fiber (B) comprises a carbon fiber with a nickel coating having a thickness of about 0.01 to about 1 μm.

7. The multi-functional resin composite material of claim 1 , wherein the carbon nanotubes (C) have a diameter of about 1 to about 50 nm and a length of about 10 nm to about 20 μm.

8. The multi-functional resin composite material of claim 1 , wherein the inorganic material (D) comprises a nickel-iron alloy.

9. The multi-functional resin composite material of claim 1 , wherein the inorganic material (D) comprises a Mu-metal, a Permalloy, or a combination thereof.

10. The multi-functional resin composite material of claim 1 , wherein the multi-functional resin composite material further comprises (E) about 5 to about 20 parts by weight of a glass fiber based on about 100 parts by weight of the multi-functional resin composite material.

11. The multi-functional resin composite material of claim 10 , wherein the glass fiber (E) has a diameter of about 8 to about 15 μm and a length of about 2 to about 12 mm.

12. The multi-functional resin composite material of claim 1 , wherein the multi-functional resin composite material further comprises an additive agent including an antibacterial agent, a heat stabilizer, an antioxidant, a release agent, a light stabilizer, a surfactant, a coupling agent, a plasticizer, an admixture, a stabilizer, a lubricant, an antistatic agent, a tinting agent, a flame proofing agent, a weather-resistance agent, a colorant, a ultraviolet (UV) absorber, a ultraviolet (UV) blocking agent, a nucleating agent, an adhesion aid, an adhesive, or a combination thereof.

13. A molded product formed of the multi-functional resin composite material according to claim 1 .