RT journal article T1 Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing A1 Moreno Sánchez, Daniel A1 Sanz de León, Alberto A1 Moreno Nieto, Francisco Daniel A1 Delgado González, Francisco Javier A1 Molina Rubio, Sergio Ignacio A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica A2 Ingeniería Mecánica y Diseño Industrial K1 fiber-reinforced composites K1 basalt fiber K1 ASA K1 additive manufacturing K1 fused filament fabrication K1 mechanical properties K1 coefficient of thermal expansion K1 design K1 warping AB Fused filament fabrication (FFF) is gaining attention as an efficient way to create parts and replacements on demand using thermoplastics. This technology requires the development of new materials with a reliable printability that satisfies the requirement of final parts. In this context, a series of composites based on acrylonitrile styrene acrylate (ASA) reinforced with basalt fiber (BF) are reported in this work. First, several surface modification treatments are applied onto the BF to increase their compatibility with the ASA matrix. Then, once the best treatment is identified, the mechanical properties, coefficient of thermal expansion (CTE) and warping distortion of the different specimens designed and prepared by FFF are studied. It was found that the silanized BF is appropriate for an adequate printing, obtaining composites with higher stiffness, tensile strength, low CTE and a significant reduction in part distortion. These composites are of potential interest in the design and manufacturing of final products by FFF, as they show much lower CTE values than pure ASA, which is essential to successfully fabricate large objects using this technique. PB MDPI SN 2073-4360 YR 2022 FD 2022-08 LK http://hdl.handle.net/10498/27951 UL http://hdl.handle.net/10498/27951 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026