Thermoplastic resin composition, method for producing the same, and molded article containing the same

Abstract

This description relates to a thermoplastic resin composition, a method for producing the same, and a molded article containing the same, and more specifically, to a thermoplastic resin composition, a method for producing the same, and a molded article containing the same, characterized by comprising: (a) 15.5 to 26% by weight of polyamide resin; (b) 9.5 to 17% by weight of poly(arylene ether) resin; (c) 2 to 5.5% by weight of modified poly(arylene ether) resin; (d) 0.5 to 4.5% by weight of one or more selected from the group consisting of aromatic vinyl elastomers and olefin elastomers; (e) 5.5 to 12.5% ​​by weight of metallic phosphorus flame retardant; (f) 6.5 to 20.5% by weight of metal silicate; (g) 15.5 to 38.5% by weight of glass fiber; and (h) 4.5 to 10% by weight of flame retardant. According to the present invention, a thermoplastic resin composition, a method for producing the same, and a molded article containing the same are provided, which are excellent in flame retardancy and electrical insulation, and also have excellent flame delay characteristics during thermal runaway by forming ceramics at ultra-high temperatures and when flames are generated, thereby delaying flame propagation, thus ensuring safety for property and human life, and are environmentally friendly.

Claims

1. (a) 15.5 to 26% by weight of polyamide resin, (b) Poly(arylene ether) resin 9.5 to 17% by weight, (c) Modified poly(arylene ether) resin 2 to 5.5% by weight, (d) One or more elastomers selected from the group consisting of aromatic vinyl elastomers and olefin elastomers in an amount of 0.5 to 4.5% by weight, (e) 5.5 to 12.5% ​​by weight of a metallic phosphorus-based flame retardant, (f) 6.5 to 20.5% by weight of metal silicate, (g) Glass fiber 15.5 to 38.5% by weight, (h) A thermoplastic resin composition characterized by containing 4.5 to 10% by weight of a flame retardant.

2. The thermoplastic resin composition according to claim 1, characterized in that the (c) modified poly(arylene ether) resin includes a poly(arylene ether) resin modified with an unsaturated carboxylic acid or its anhydride.

3. The thermoplastic resin composition according to claim 1, characterized in that the aromatic vinyl elastomer comprises one or more selected from styrene-butadiene-styrene (SBS) copolymer, styrene-ethylene-butylene-styrene (SEBS) copolymer, styrene-butadiene (SB) copolymer, styrene-isoprene (SI) copolymer, styrene-isoprene-styrene (SIS) copolymer, α-methylstyrene-butadiene copolymer, styrene-ethylene-propylene copolymer, styrene-ethylene-propylene-styrene (SEPS) copolymer, styrene-ethylene-ethylene-butadiene-styrene (SEEBS), styrene-ethylene-ethylene-propylene-styrene (SEEPS), styrene-isoprene-butadiene (SIB), and modified polymers thereof.

4. The thermoplastic resin composition according to claim 1, characterized in that the olefin-based elastomer is one or more selected from high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), ethylene-propylene copolymer (EPM), ethylene-propylene-diene copolymer (EPDM), ethylene-butene copolymer, ethylene-octene copolymer, and modified polymers thereof.

5. The thermoplastic resin composition according to claim 1, characterized in that the (f) metal silicate comprises Al, Ca, or a mixture thereof.

6. The thermoplastic resin composition according to claim 1, characterized in that the (f) metal silicate comprises one or more selected from the group consisting of kaolin, kaolinite, pyrophyllite, mica, feldspar, spodumene, petalite, and wollastonite.

7. The thermoplastic resin composition according to claim 1, characterized in that the (f) metal silicate is a magnesium-free silicate.

8. The thermoplastic resin composition according to claim 1, characterized in that the (g) glass fibers have an average particle size of 3 to 25 μm and an average length of 1 to 10 mm.

9. The thermoplastic resin composition according to claim 1, characterized in that the (h) flame retardant comprises one or more selected from the group consisting of melamine-based flame retardants, phosphazene-based flame retardants, and phosphate-based flame retardants.

10. The thermoplastic resin composition according to claim 1, characterized in that, in accordance with the Torch and Grit evaluation of UL 2596, a flame of 1300°C formed with oxygen and propane gas was applied to a 150 mm × 150 mm × 3 mm test piece, and the time until a hole or drip occurred was measured, and the flame endurance time was 600 seconds or more.

11. The thermoplastic resin composition according to claim 1, characterized in that, when the Comparative Tracking Index (CTI) is measured on a 3 mm thick test piece in accordance with IEC 60112, the grade according to the PLC (Performance Level Category) classification is 1 or higher.

12. The process includes the steps of kneading and extruding (a) 15.5 to 26% by weight of polyamide resin, (b) 9.5 to 17% by weight of poly(arylene ether) resin, (c) 2 to 5.5% by weight of modified poly(arylene ether) resin, (d) 0.5 to 4.5% by weight of one or more selected from the group consisting of aromatic vinyl elastomers and olefin elastomers, (e) 5.5 to 12.5% ​​by weight of metallic phosphorus flame retardant, (f) 6.5 to 20.5% by weight of metal silicate, (g) 15.5 to 38.5% by weight of glass fiber, and (h) 4.5 to 10% by weight of flame retardant. A method for producing a thermoplastic resin composition, characterized in that the kneading and extrusion are carried out using an extruder having nine or more kneading blocks.

13. A flame retardant composition characterized by comprising a metallic phosphorus-based flame retardant, a metal silicate, glass fibers, and a flame retardant.

14. The flame retardant composition according to claim 13, characterized in that it contains, based on its total weight, 8.5 to 21.3% by weight of a metallic phosphorus-based flame retardant, 11.5 to 40% by weight of a metal silicate, 27 to 56% by weight of glass fiber, and 6.5 to 17% by weight of a flame retardant.

15. A molded article characterized by comprising the thermoplastic resin composition described in any one of claims 1 to 11.

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