膜科学与膜技术作为新兴的材料科学分支之一，在国民经济中发挥着越来越重要的作用．近年来，高分子微孔膜的研究与应用正引起人们日益增长的关注．采用双轴拉伸方法制备的聚丙烯微孔膜同时具备了良好的力学性能和透过性能［１］，克服了单轴拉伸方法各向异性的缺点，是一... As one of the emerging branches of material science, membrane science and membrane technology play an increasingly important role in the national economy. In recent years, the research and application of polymer microporous membrane is arousing growing concern. Polypropylene microporous membrane prepared by biaxial stretching method has good mechanical properties and permeability [1] at the same time, to overcome the shortcomings of anisotropy of uniaxial stretching method, is a ...