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http://dx.doi.org/10.17702/jai.2020.21.3.93

Solvent-free UV-curable Acrylic Adhesives for 3D printer build sheet  

Lee, Bae Hwa (Department of Safety and Health Convergence Engineering, Soongsil University)
Park, Dong Hyup (Applied Polymer Research Center, Korea Conformity Laboratories)
Kim, Byung Jick (Department of Safety and Health Convergence Engineering, Soongsil University)
Publication Information
Journal of Adhesion and Interface / v.21, no.3, 2020 , pp. 93-100 More about this Journal
Abstract
3D printing technology enables proper objects to be made through an additive manufacturing method, but resulting in dimension deviation of the product due to contraction phenomenon as cooling melted filament resin injected from high-temperature use environment. In this research, we studied on acrylic adhesives for 3D printer build sheet in order to fabricate high-quality products with a precise shape and to well-mount without distortion. The solvent-free UV-curable acrylic adhesive formulation was designed by adding 4-acryloylmorpholine (ACMO) with high adhesion, toughness, glass transition temperature so that adhesion properties are stable at high temperature and products are easily mounted/detached from the adhesives. The designed formulation was polymerized through two-steps using post-addition of monomers. Using this, the acrylic adhesive was coated to make a film and then analyzed using various experimental techniques. As a result, the fabricated adhesive exhibited high glass transition temperature and there was little gap in peel strength before and after thermal treatment. Moreover, it was confirmed by rheological analysis that this adhesive can provide great bonding/debonding ability without distortion. We demonstrated the fabrication of a rectangular product using a 3D printing method using our acrylic adhesive as a build sheet. Mounting ability and workability were satisfactory and dimension deviation of the product was tiny. Because the product is easily detachable from the acrylic adhesive developed here than conventional build sheets, it is expected that this will provide work convenience to users who use the 3D printer.
Keywords
3D printing; acrylic adhesive; UV curing; rheological property; VOC;
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