4D-Printing - Fused Deposition Modeling Printing and PolyJet Printing with Shape Memory Polymers Composite

초록

The main objective of this paper is to use 4D printing method to design shape memory polymers (SMP) fordeveloping smart textile and wearable products. SMPs are stimulating, responsive shape-changing polymers that can changeits shape upon exposure to an external stimulus, such as light, temperature, chemicals, etc. In this paper, polyurethan SMP,which can change its shape as the temperature changes, was employed. We offer two methods for controlling the temperatureof the specimen. The first method is to mix the conductive SWCNT into the SMP and the second method is to simultaneouslyprint the SMP and a conductive material (Silver paste), the sample will be heated by applying an electric current to it. SMPpellets were processed to be suitable for each method for fabrication of two types of SMP and SMP/m-SWCNT arrays usingan extrusion system, both of which were input materials for 3D deposition models (FDM). The samples printed using thissystem were compared and assessed. Herein, the comparisons of the materials, structures, processes, and the effectiveness ofthe methods are shown. The samples were compared to determine the advantages and disadvantages of each method, to forma basis on which a proper method for wearable products can be selected.

키워드