Polycarbonate alloy with good appearance as well as preparation method and application thereof

The invention discloses a good-appearance polycarbonate alloy as well as a preparation method and application thereof. The polycarbonate alloy is prepared from the following components in parts by weight: 60 to 80 parts of polycarbonate, 20 to 40 parts of polybutylene terephthalate, 5 to 10 parts of a toughening agent, 0.1 to 1 part of an antioxidant, 0.1 to 3 parts of a light stabilizer and 0.1 to 3 parts of toner. Wherein the polycarbonate is a compound of first polycarbonate and second polycarbonate; the melt index of the first polycarbonate is 2-5g/10min, and the melt index of the second polycarbonate is 8-13g/10min; the weight ratio of the first polycarbonate to the second polycarbonate is (1: 3)-(3: 1). By optimizing the material formula, the balance between bright printing and solvent resistance is realized. Meanwhile, the material disclosed by the invention has good fluidity and excellent mechanical properties. 本发明公开了一种良外观聚碳酸酯合金及其制备方法和应用。所述聚碳酸酯合金包括如下组分：聚碳酸酯60-80重量份，聚对苯二甲酸丁二酯20-40重量份，增韧剂5-10重量份，抗氧剂0.1-