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27. Preparation and Properties of 3D Printed Nanocomposites and Their Applications in Construction

LIXIN WU, ZIXIANG WENG and YU ZHOU

Abstract


Organically modified nanofillers, including nano SiO2, montmorillonite and attapulgite were incorporated with Acrylic resin and Acrylonitrile butadiene styrene (ABS) used for Stereolithgraphy Apparatus (SLA) and Fused Deposition Modeling (FDM) 3D printing respectively. The 3D printed samples were evaluated by tensile, flexural, thermal expansion and dynamic mechanical tests. The morphology of nanocomposites were observed by TEM. It was found that addition of 5 wt% of nano SiO2 increased the tensile strength and modulus of SAL 3D printed materials by 20.6% and 65.1% respectively. Addition of 5 wt% OMMT improved the tensile strength of FDM 3D printed ABS samples by 43% and significantly increased the tensile modulus, flexural strength, flexural modulus and dynamic mechanical storage modulus, and decreased the linear thermal expansion ratio and the weight loss of TGA. These novel nanocomposites with better mechanical and thermal properties can be used in construction applications, such as manufacture of concrete wall arts.


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