为制备性能稳定的车用聚碳酸酯木塑复合材料（PC/WPC），以聚碳酸酯（PC）为基材，添加木粉（WF）、催化剂、促进剂、胶凝剂和抗紫外线助剂制备PC/WPC，并研究WF添加量对PC/WPC性能的影响。结果表明：当WF添加量为15.87%时，PC/WPC的拉伸强度、弯曲强度、冲击强度和洛氏硬度最高，分别达到78.47 MPa、118.61 MPa、34.62 kJ/m²和95.68 HRB。当WF添加量为15.87%、23.81%时，PC/WPC的内部粒子结构较为紧密，改善了木塑复合材料的晶体结构。PC/WPC的起始分解温度约为280 ℃，420 ℃基本完全分解。WF添加量为15.87%时，PC/WPC的力学强度、洛氏硬度最好。WF添加量为23.81%时，PC/WPC的热稳定性最佳。

To prepare automotive-grade polycarbonate/wood-plastic composite (PC/WPC) with stable property, polycarbonate (PC) was used as the base material, and wood flour (WF), catalyst, promoter, coagulant, and UV-resistant additive were added to prepare PC/WPC. The influence of WF content on the properties of PC/WPC was studied. The results show that when the WF content is 15.87%, the tensile strength, flexural strength, impact strength, and Rockwell hardness of PC/WPC reach the highest values, reaching 78.47 MPa, 118.61 MPa, 34.62 kJ/m², and 95.68 HRB, respectively. When the WF content is 15.87% and 23.81%, the internal particle structure of PC/WPC is relatively compact, improving the crystalline structure of wood-plastic composites. The initial decomposition temperature of PC/WPC is approximately 280 ℃, and it is almost completely decomposed at 420 ℃. When the WF content is 15.87%, PC/WPC exhibits the best mechanical strength, Rockwell hardness. At a WF content of 23.81%, PC/WPC showes optimal thermal stability.