Thermoplastic resin composition, and molded article
AssigneeLG Chem, Ltd.
InventorsGun Ko, Seonho Kong, Sun Mo Son
Life of this patent
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Abstract
The present disclosure relates to a thermoplastic resin composition and a molded article manufactured using the same. The present disclosure has an effect of providing a thermoplastic resin composition having tensile strength and flexural modulus equal or superior to those of a conventional polyester composite material; having greatly improved impact strength, flexural strength, and heat deflection temperature under high load; and thus being suitable for lightweight automotive parts requiring high rigidity, and a molded article manufactured using the thermoplastic resin composition.
Claims15
A thermoplastic resin composition, comprising:
- 12.7 to 20% by weight of a polyester resin;
- 1 to 12% by weight of a recycled resin or a polyamide/polyalkylene terephthalate alloy resin;
- greater than 15% by weight and 18% by weight or less of a conjugated diene-aromatic vinyl compound-vinyl cyanide compound graft copolymer;
- greater than 15% by weight and 22% by weight or less of a conjugated diene-aromatic vinyl compound-vinyl cyanide compound bulk copolymer;
- 27 to 45% by weight of a copolymer composed of an acrylate-based compound-alkyl-substituted aromatic vinyl compound-vinyl cyanide compound;
- and
- 8 to 12.5% by weight of a maleimide-based polymer.
A method of preparing a thermoplastic resin composition, comprising:
- desalting waste polyester fishing nets having an intrinsic viscosity (IV) of 0.6 to 0.9 dl/g to obtain waste fishing net pellets and chip-molding the waste fishing net pellets to prepare a recycled resin containing 60 to 99.9% by weight in total of Ca, Fe, and S and 0.1 to 40% by weight in total of Na, Mg, Al, Si, K, Ti, Ni, Zn, Sb, and Cl, based on 100% by weight of total inorganic components as measured using Inductively Coupled Plasma Optical Emission spectroscopy (ICP-OES) equipment;
- and
- melt-kneading and extruding 1 to 12% by weight of the recycled resin, 12.7 to 20% by weight of a polyester resin, greater than 15% by weight and 18% by weight or less of a conjugated diene-aromatic vinyl compound-vinyl cyanide compound graft copolymer, greater than 15% by weight and 22% by weight or less of a conjugated diene-aromatic vinyl compound-vinyl cyanide compound bulk copolymer, 27 to 45% by weight of a copolymer composed of an acrylate-based compound-alkyl-substituted aromatic vinyl compound-vinyl cyanide compound, 8 to 12.5% by weight of a maleimide-based polymer, and 0.1 to 5% by weight of additives,
- wherein the thermoplastic resin composition has a heat deflection temperature of 86° C. or higher as measured under 1.80 MPa according to standard measurement ISO 75.
Dependencies are inferred from the claim text.