Direct-Writable and Thermally One-Step Curable "Water-Stained" Epoxy Composite Inks.

ABSTRACT: In this study, a simple method for preparing direct-writable and thermally one-step curable epoxy composite inks was proposed. Specifically, colloidal inks containing a mixture of ordinary epoxy resin and anhydride-type hardener with the suspended alumina microplates, as exemplary fillers, are "stained" with small amounts of water. This increases the elasticity of the ink via the interparticle capillary attraction and promotes curing of the epoxy matrix in low-temperature ranges, causing the three-dimensional (3D) printed ink to avoid structural disruption during one-step thermal curing without the tedious pre-curing step. The proposed mechanisms for the shape retention of thermally cured water-stained inks were discussed with thorough analyses using shear rheometry, DSC, FTIR, and SEM. Re

SUBMITTER: Kim S 

PROVIDER: S-EPMC9573494 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature