Heat-resistant resin composition
Provided is a heat-resistant resin composition which includes: a base resin including: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including an aromatic vinyl-based unit and a vinyl cyan-based unit; a second styrene-based copolymer including a maleimide-based unit, an aromatic vinyl-based unit, and a vinyl cyan-based unit; and a carbonate-based polymer; and a third styrene-based copolymer including an aromatic vinyl-based unit and a maleic acid-based unit.
1. A heat-resistant resin composition comprising:
a base resin comprising:
a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer;
a first styrene-based copolymer comprising an aromatic vinyl-based unit and a vinyl cyan-based unit;
a second styrene-based copolymer comprising a maleimide-based unit, an aromatic vinyl-based unit, and a vinyl cyan-based unit; and
a carbonate-based polymer; and
a third styrene-based copolymer comprising an aromatic vinyl-based unit and a maleic acid-based unit, wherein the third styrene-based copolymer is a styrene/maleic anhydride bipolymer.
2. The heat-resistant resin composition of claim 1 , wherein the heat-resistant resin composition includes the third styrene-based copolymer in an amount of 0.1 to 5 parts by weight with respect to 100 parts by weight of the base resin.
3. The heat-resistant resin composition of claim 1 , wherein the diene-based rubber polymer has an average particle size of 100 to 800 nm.
4. The heat-resistant resin composition of claim 1 , wherein the first styrene-based copolymer is a styrene/acrylonitrile copolymer.
5. The heat-resistant resin composition of claim 1 , wherein the second styrene-based copolymer is an N-phenylmaleimide/styrene/acrylonitrile copolymer.
6. The heat-resistant resin composition of claim 1 , wherein the carbonate-based polymer is polycarbonate.
7. The heat-resistant resin composition of claim 1 , wherein the heat-resistant resin composition includes, with respect to 100 parts by weight of the base resin,
the graft copolymer in an amount of 10 to 40 parts by weight;
the first styrene-based copolymer in an amount of 15 to 45 parts by weight;
the second styrene-based copolymer in an amount of 25 to 55 parts by weight; and
the carbonate-based polymer in an amount of 1 to 20 parts by weight.
8. The heat-resistant resin composition of claim 1 , wherein the heat-resistant resin composition includes, with respect to 100 parts by weight of the base resin,
the graft copolymer in an amount of 15 to 35 parts by weight;
the first styrene-based copolymer in an amount of 20 to 40 parts by weight;
the second styrene-based copolymer in an amount of 30 to 50 parts by weight; and
the carbonate-based polymer in an amount of 3 to 15 parts by weight.
9. A heat-resistant resin molded article formed of the heat-resistant resin composition of claim 1 and having a diffuse reflectance of 7.7% or less after metal deposition.