Resin molded body
View Patent ↗Provided is a resin molded body which has excellent flame retardance, weather resistance, shock resistance and tracking resistance. The resin molded body is composed of a thermoplastic resin composition comprising a thermoplastic resin, a polycarbonate, an elastomer, and a flame retardant. By adopting this combination of components, a Charpy impact value at 23° C. measured in conformity with ISO 179/1eA is 15 kJ/m2 or more and flame retardance measured under a condition of thickness of 1.0 mm and in conformity with UL94 is V-0 or more, and a resin molded body which can be used favorably outdoors is produced.
1. A resin molded body, which is used outdoors, composed of a thermoplastic resin composition consisting of a polybutylene terephthalate, a polycarbonate, a core shell elastomer, and a flame retardant, or a thermoplastic resin composition consisting of a polybutylene terephthalate, a polycarbonate, a core-shell elastomer, a flame retardant, and at least one component selected from the group consisting of a flame-retardant auxiliary, a dripping inhibitor, a stabilizer, an antioxidant, a mold releasant and a colorant, wherein the flame retardant is selected from a bromine-containing acrylic resin and a bromine-containing epoxy compound, a Charpy impact value at 23° C. measured in conformity with ISO179/1eA is 15 kJ/m 2 or more, and flame retardance measured under the conditions of a thickness of 1.0 mm in conformity with UL94 is V-0 or more.
2. The resin molded body according to claim 1 , wherein a Charpy impact value at −40° C. measured in conformity with ISO179/1eA is 5 kJ/m 2 or more.
3. The resin molded body according to claim 1 , which is a connector for electrical and electronic parts, a plug, or a storage housing for storing electrical and electronic parts.
4. The resin molded body according to claim 3 , wherein the connector is a component of a solar battery, a component of a breaker, a component of a switch, or a component of an electric vehicle.
5. The resin molded body according to claim 1 , wherein
the thermoplastic resin composition contains:
25% by mass or more and 70% by mass or less of polybutylene terephthalate,
10% by mass or more and 50% by mass or less of a polycarbonate,
5% by mass or more and 20% by mass or less of an elastomer, and
10% by mass or more and 15% by mass or less of a flame retardant.
6. The resin molded body according to claim 1 , wherein the flame retardant is a bromine-containing acrylic resin, and
the thermoplastic resin composition contains 2% by mass or more and 10% by mass or less of antimony trioxide as the flame-retardant auxiliary.
7. The resin molded body according claim 1 , wherein the thermoplastic resin composition exhibits a melt viscosity of 0.20 kPa·s or more and 0.40 kPa·s or less at a temperature of 260° C. and a shear rate of 1,000 sec −1 .
8. The resin molded body according to claim 1 , wherein the thermoplastic resin composition exhibits a comparative tracking index of 0 or 1 measured in conformity with IEC112, Third Edition, using an aqueous 0.1% ammonium chloride solution and a platinum electrode.
9. The resin molded body according to claim 1 , wherein the thermoplastic resin composition exhibits a comparative tracking index of 0 measured in conformity with IEC112, Third Edition, using an aqueous 0.1% ammonium chloride solution and a platinum electrode.