【目的】探索生物基材料在水性聚氨酯领域的应用潜力，降低对石油基产品的依赖。【方法】以聚三亚甲基醚二醇（PO3G）、聚碳酸酯二醇（PCDL）、二羟甲基丙酸（DMPA）、异佛尔酮二异氰酸酯（IPDI）为主要原料，制备出一系列固含量为 50%的生物基水性聚氨酯分散体，并将其制备成印花胶浆进行印花性能测试。采用红外光谱仪表征产物结构，探讨了 PCDL用量对分散体的稳定性及胶膜热力学性能、力学性能、水接触角、印花性能等的影响。【结果】随着 PCDL用量的增加，胶膜的断裂伸长率降低，力学性能逐渐提升。当 PCDL与 PO3G质量分别为 40 g和 80 g时，涂层表面的水接触角提高到 83. 9°，XRD测试结果表明其为无定形聚合物，同时在印花测试中，布板的皂洗牢度有较大提升。【结论】该研究证明生物基替代石油基产品的可行性，为生物基水性聚氨酯在印花领域的应用提供理论支撑。

【Objective】To explore the application potential of bio-based materials in the field ofwater-based polyurethanes and reduce reliance on petroleum-based products.【Methods】Using poly（trimethylene ether）glycol（PO3G），polycarbonate diol（PCDL），dimethylolpropionic acid（DMPA）， and isophorone diisocyanate（IPDI） as the main raw materials，a series of bio-based water-based polyurethane dispersions with a solid content of 50% were prepared，and the printing performance wastested by preparing them into printing pastes. Characterization analysis of the product was conductedusing infrared spectroscopy，and the effects of PCDL dosage on the stability of dispersion，thermodynamic properties，mechanical properties，water contact angle，and printing performance of the film were discussed.【Results】With the increase of PCDL content，the elongation at break of the film decreased，while the strength and hardness gradually improved. When the mass of PCDL and PO3G was40 g and 80 g respectively，the water contact angle on the coating surface was increased to 83. 9°. The XRDtesting results indicated that the material was an amorphous polymer. Additionally，in printing tests，the soaping fastness of the cloth board was significantly improved.【Conclusion】This study demonstrates the feasibility of replacing petroleum-based products with bio-based alternatives，providing theoretical support for the application of bio-based water-based polyurethanes in the printing field.