MEJORA DE LA ADHESIÓN EN LA IMPRESIÓN 3D MEDIANTE PLASMA ATMOSFÉRICO

Abstract

3D printing consists in the manufacture of three-dimensional objects from a digital model. 3D printing is a relatively recent technique for part manufacturing. It started in the 80s with commercial machines of high cost, but in the last decade it has had a very dynamic evolution thanks to the proliferation of domestic 3D printers. The most commonly used materials are polyactic acid (PLA), of vegetable origin, and acrylonitrile butadiene styrene (ABS), derived from petroleum. When trying to improve the mechanical capabilities of printed parts, materials like polyoxymethylene (POM) or acetal are used. The main drawback of POM is that it has self-lubricating capabilities that complicate the adhesion of the first layer that is printed on the support bed. This difficulty is known and profusely described in numerous publications in the field of 3D printing. The present communication describes the work related to the improvement of the adhesion of the first layer of a POM part on a polycarbonate support bed using cold atmospheric plasma. The best of the plasma treatments that have been used has improved the adhesion of the POM samples of the present work by more than 30%.