3D打印过程中液体可控输送的研究进展及展望

Progress and Outlook of Controllable Liquid Transport During 3D Printing

随着信息技术的快速发展,3D打印实现了由数字化模型到三维实物的快速转化。目前,3D打印已广泛用于复杂精细三维结构和定制化结构的制备,尤其是在仿生学研究中极大促进了仿生微流体的发展。从界面材料物理化学的角度看,3D打印实质是打印材料输送与固-液相变过程。然而,沉积、固化、黏附等界面科学问题限制着其效率的提高。解决这些界面问题将大幅缩短打印时间,提高打印分辨率、材料利用率和打印件质量。针对目前在3D打印中所遇到的界面科学问题,文中系统概述了多种3D打印技术的基本原理及相应界面问题,并展望其解决方法,最后简要介绍了3D打印在仿生液体输送领域的最新发展和应用。

With the rapid development of information technology,3D printing has realized the rapid transformation from the digital models to three dimensional objects.At present,3D printing has been widely used in the fabrication of complex and fine structures,as well as customized structures.Especially in the process of bionic research,3D printing has greatly promoted the development of bioimetic microfluidics.From the point of view of physical chemistry of interface,3D printing is essentially the process of printable material transportation and solid-liquid phase transition.However,many interface problems,such as interface deposition,curing and adhesion,limit the improvement of the efficiency of 3D printing.Solving these problems will greatly shorten printing time,enhance printing accuracy and improve material utilization and printed quality.In view of current interface problems encountered in 3D printing,we summarized the basic principles and corresponding interface problems of various 3D printing technologies,looked forward to the solutions to these problems,and finally introduced the application and development of 3D printing in the field of bioinspired liquid transport.