Polycarbonate resin composition and molded article produced therefrom
A polycarbonate resin composition and a molded article manufactured using the same. The polycarbonate resin composition includes: (A) a polycarbonate resin including end groups, wherein the end groups include a hydroxyl group (—OH) in an amount of about 1% to about 20% based on the total weight (100 wt %) of all end groups; and (B) a metal compound comprising at least one of a metal oxide, a heavy metal complex oxide, and a copper salt. The polycarbonate resin composition and a molded article manufactured using the same can have excellent properties in terms of impact strength, flexural strength, and processability.
1. A polycarbonate resin composition comprising:
(A) about 50 wt % to about 85 wt % of a polycarbonate resin including end groups, wherein the end groups include a hydroxyl group (—OH) in an amount of about 1% to about 20% based on the total weight (100 wt %) of all end groups;
(B) about 1 wt % to about 20 wt % of a metal compound comprising a copper salt, wherein the copper salt comprises at least one of copper hydroxide phosphate, copper phosphate, copper sulfate, and cuprous thiocyanate; and
(C) about 1 wt % to about 40 wt % of inorganic fillers,
wherein the polycarbonate resin composition has a gas generation amount of about 50 total peak area to about 340 total peak area per hour, as measured on about 2 g of pellets of the polycarbonate resin composition having been dried for about 5 hours using a static headspace sampler by headspace gas chromatography (HS-GC).
2. The polycarbonate resin composition according to claim 1 , wherein a weight ratio of the polycarbonate resin (A) to the metal compound (B) ranges from about 100: about 1 to about 100: about 30.
3. The polycarbonate resin composition according to claim 1 , wherein the inorganic fillers (C) comprise glass fibers.
4. The polycarbonate resin composition according to claim 1 , wherein the polycarbonate resin (A) contains about 10,000 ppm to about 200,000 ppm of the hydroxyl group (—OH).
5. The polycarbonate resin composition according to claim 1 , wherein the polycarbonate resin composition has an impact resistance of about 40 cm to about 100 cm, as measured on a plate-type injection molded specimen having a size of about 1 mm×about 5 cm×about 5 cm (thickness×width×length) and left for aging at room temperature for 6 hours using a falling weight impact tester with a 500 g weight in accordance with DuPont drop test method, in which the impact resistance is found by impacting 20 specimens with the weight to measure a height of the weight at which about 50% of each specimen is broken, followed by averaging values of the height.
6. The polycarbonate resin composition according to claim 1 , comprising (A) about 50 wt % to about 84 wt % of the polycarbonate resin including end groups, wherein the end groups include a hydroxyl group (—OH) in an amount of about 1% to about 20% based on the total weight (100 wt %) of all end groups.
7. The polycarbonate resin composition according to claim 1 , comprising (A) about 50 wt % to about 82 wt % of the polycarbonate resin including end groups, wherein the end groups include a hydroxyl group (—OH) in an amount of about 1% to about 20% based on the total weight (100 wt %) of all end groups.
8. The polycarbonate resin composition according to claim 1 , wherein the polycarbonate resin (A) includes the hydroxyl group (—OH) in an amount of about 15% to about 20% based on the total weight (100 wt %) of all end groups.
9. A molded article manufactured using the polycarbonate resin composition according to claim 1 .