Ceramic bodies without warping using epoxide–acrylate hybrid ceramic slurry for photopolymerization‐based 3D printing

Abstract

To be able to produce ceramic bodies with complex shapes without interlayer delamination and warping through vat photopolymerization‐based 3D printing techniques, photosensitive ceramic slurries should be studied to prepare 3D printed green and sintered bodies. In this study, we developed dual curable acrylate‐epoxide ceramic slurries for digital light processing (DLP) 3D ceramic printing. Dual curing process of the slurries is a combination of photo‐radical polymerization of acrylate and thermal cationic polymerization of cyclo‐aliphatic epoxide. The green bodies prepared by dual curing of the slurries showed higher fracture strength and better adhesion between layers and between starting particles and binder polymer in comparison to acrylate based green body. These advantages were due to higher crosslinking density of the binder matrix and hydrogen bonding by hydroxyl groups from epoxide ring opening. The green and sintered bodies printed with improved slurry and DLP 3D printer had flat shape without warping unlike those from acrylate‐based bodies. Moreover, distribution of inter‐particle necking in the sintered body was uniform and interface boundary between layers was not observed. This is because of excellent uniformity of dual cured acrylate‐epoxide polymer matrix (uniform crosslinking density in layers) in the green body and hydroxyl groups generated by epoxy ring opening.This article is protected by copyright. All rights reserved

Enhancing Mechanical and Thermal Properties of 3D-Printed Samples Using Mica-Epoxy Acrylate Resin Composites—Via Digital Light Processing (DLP)

“…Recent research articles have developed novel bio-based polymers and composite materials that not only offer enhanced printability but also align with the growing demand for eco-friendly manufacturing processes [ 6 , 7 , 8 , 9 , 10 ]. Furthermore, there is a notable emphasis on improving the precision and speed of 3D printing through innovations such as high-speed resin-based printing and advanced multi-material printing technologies [ 11 , 12 , 13 , 14 , 15 ]. The integration of artificial intelligence and machine learning algorithms to optimize print parameters and minimize defects is another exciting avenue explored in recent studies.…”