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建立了PMMA(聚甲基丙烯酸甲酯)的黏弹性材料模型,以微结构的复制率作为评判依据,利用Abaqus软件研究了滚压过程中滚筒微结构和基板的几何参数对滚压工艺的影响。仿真结果表明:在相同的压印温度、压印力和牵引速度下,随着微结构直径的增大,复制率增大;随着微结构间距的增大,复制率先减小后保持不变;随着基板厚度的减小,复制率增大。
The viscoelastic material model of PMMA (polymethylmethacrylate) was established. Based on the microstructure replication rate, Abaqus software was used to study the influence of the geometry parameters of the roller and the substrate on the rolling process . The simulation results show that the replication rate increases with the increase of the diameter of the microstructure under the same embossing temperature, imprinting force and traction speed. The replication rate decreases first and remains unchanged with the increase of the microstructure spacing As the substrate thickness decreases, the replication rate increases.