对3种不同的聚乳酸/Ecoflex共混薄膜横向、纵向拉伸强度和断裂伸长率进行了对比分析,并研究了薄膜拉伸性能的影响因素。实验结果表明:聚乳酸(PLA)与Ecoflex的相容性越好,薄膜拉伸性能越好;薄膜纵向拉伸强度和断裂伸长率大于横向拉伸强度和断裂伸长率;加载速率对薄膜拉伸强度和断裂伸长率没有显著影响。 The transverse, longitudinal tensile strength and elongation at break of three different polylactic acid / Ecoflex blends were compared and analyzed, and the influencing factors on the tensile properties of the film were studied. The experimental results show that the better compatibility between PLA and Ecoflex is, the better the tensile properties of the film are; the tensile strength and elongation at break in the film are larger than the tensile strength and the elongation at break in the transverse direction; Tensile strength and elongation at break had no significant effect.