本发明公开了聚合物微积分纳米层叠膜法碳纤维原丝及其制备方法,具有取向结构的纳米层叠薄膜分割形成多条纳米层叠薄膜条带,将每条纳米层叠的条带通过牵伸、冷却定型,进行收卷获得最终碳纤维原丝。制备方法:第一步,配置聚合物溶液或熔体,通过多个层叠器组件挤出,并通过厚度为0.2~2 mm的片材挤出口模;第二 The invention discloses a polymer calculus nanometer lamination membrane carbon fiber precursor and a preparation method thereof. The nanometer lamination film with the orientation structure is divided to form a plurality of nanometer lamination film strips, and the lamination of each nanometer lamination is drafted and cooled Styling, winding to obtain the final carbon fiber precursor. Preparation: The first step, the polymer solution or melt configuration, extrusion through a plurality of laminator assembly, and through the thickness of 0.2 ~ 2 mm sheet extrusion die; the second