Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing

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 o...

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Bibliographic Details
Published in:Polymers 2022-08, Vol.14 (15), p.3216
Main Authors: Moreno-Sanchez, Daniel, Sanz de León, Alberto, Moreno Nieto, Daniel, Delgado, Francisco J., Molina, Sergio I.
Format: Article
Language:English
Subjects:
Additive manufacturing
Basalt
Distortion
Fiber composites
Fused deposition modeling
Injection molding
Manufacturing
Mechanical properties
Polymers
Raw materials
Stiffness
Temperature
Tensile strength
Thermal expansion
Thermoplastic resins
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Summary: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.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym14153216