Abstract

In order to prepare color three-dimensional (3D) printing materials with good performance, magenta 3D printing material for UV-curing ink-jet is prepared by using magenta color paste, prepolymer, monomer and photoinitiator. Surface tension, viscosity, curing rate and volume shrinkage are characterized to investigate the effect of reactive components on the printing and prototyping performance. Composition of the 3D printing material was determined by formulation experiments. The results show that species of prepolymers and monomers have great influence on viscosity, curing rate and volume shrinkage of 3D printing materials. As volume shrinkage and expansion exist in free-radical and cationic UV-curing systems, respectively, a free-radical-cationic hybrid UV-curing system can provide the optimal printing and prototyping performance due to the minimizing of volume deformation. Species and contents of photoinitiators have significant influences on the UV-curing performance and an appropriate amount of photoinitiators can maximize the curing rate of 3D printing materials. This study is of great help for the research and development of true color 3D printing technology.

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