There is provided a polycarbonate resin composition containing aluminum oxide nanoparticles and being capable of showing good moldability and retention heat stability and combining high transparency and dimensional stability with excellent mechanical properties. The polycarbonate resin composition is characterized by containing an organic acid and aluminum oxide and in that: the resin composition has a melt mass flow rate of 11 g/10 min or higher as measured according to JIS K 7210 under the conditions of a temperature of 280° C., a nominal load of 2.16 Kg and a nozzle dimension UD of 8/2; and a No.2 dumbbell-shaped specimen according to JIS K 7113 formed by heat-press molding the resin composition into a film of 0.2 mm in thickness and cutting the film has a breaking stress of 8 MPa or higher as measured under the conditions of a temperature of 23° C., a humidity of 50% RH and a tensile rate of 50 min/min. The organic acid is preferably an organic sulfonic acid having a carbon number of 8 or greater, more preferably the one containing an aromatic ring in the molecule.
提供了一种聚
碳酸酯
树脂组合物,其中含有氧化铝纳米颗粒,能够展示良好的可成型性和保持热稳定性,并将高透明度和尺寸稳定性与优异的机械性能相结合。该聚
碳酸酯
树脂组合物的特征在于含有有机酸和氧化铝,并且:根据JIS K 7210的条件,在温度为280℃、名义负荷为2.16千克和喷嘴尺寸UD为8/2的条件下测量,该
树脂组合物具有11克/10分钟或更高的熔体质量流动速率;根据JIS K 7113形成的第2号哑铃形试样,通过将
树脂组合物热压成厚度为0.2毫米的薄膜并切割薄膜,在温度为23℃、湿度为50% RH和拉伸速率为50 min/min的条件下测量,其断裂应力为8兆帕或更高。有机酸最好是具有8个或更多碳原子的有机
磺酸,更好的是分子中含有芳香环的有机
磺酸。