3D printing strong and conductive geo-polymer nanocomposite structures modified by graphene oxide

Preparation of inks with proper rheology performance is the key for extrusion based 3D printing. In this work, extrusion based 3D printing graphene oxide (GO)/geopolymer (GOGP) nanocomposite was reported for the first time. The addition of GO in geopolymeric aqueous mixture (alumiosilicate and alkal...

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Bibliographic Details
Published inCarbon (New York) Vol. 117; pp. 421 - 426
Main Authors Zhong, Jing, Zhou, Guo-Xiang, He, Pei-Gang, Yang, Zhi-Hua, Jia, De-Chang
Format Journal Article
LanguageEnglish
Published New York Elsevier Ltd 01.06.2017
Elsevier BV
Subjects
3-D printers
3D printing
Alloys
Annealing
Ceramics
Compressive strength
Electrical
Electrical resistivity
Extrusion
Graphene
Graphene oxide
Inks
Mechanical
Mechanical properties
Nanocomposites
Rheological properties
Rheology
Three dimensional printing
Graphene oxide
Electrical
3D printing
Mechanical
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Summary:Preparation of inks with proper rheology performance is the key for extrusion based 3D printing. In this work, extrusion based 3D printing graphene oxide (GO)/geopolymer (GOGP) nanocomposite was reported for the first time. The addition of GO in geopolymeric aqueous mixture (alumiosilicate and alkaline-source particles) dramatically changes its rheology properties, and enable the 3D printing that cannot be realized solely by geopolymer. The 3D printing GOGP structures exhibited high mechanical properties with compressive strength higher than 30 MPa, and electrical conductivity of 102 S/m was achieved after annealing, which is among the highest conductive ceramic nanocomposites. We expect that the rheology modification mechanism proposed in this study will facilitate the 3D printing of diverse materials, as well as the understanding of the interaction between GO and hydrophilic particles. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2017.02.102