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6CCVD Research

Rheology effect and enhanced thermal conductivity of diamond/metakaolin geopolymer fabricated by direct ink writing

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2021-05-31
JournalRapid Prototyping Journal
AuthorsYushen Wang, Wei Xiong, Danna Tang, Liang Hao, Zheng Li
InstitutionsChina University of Geosciences
Citations8

Abstract

Section titled ā€œAbstractā€

Purpose Traditional simulation research of geological and similar engineering models, such as landslides or other natural disaster scenarios, usually focuses on the change of stress and the state of the model before and after destruction. However, the transition of the inner change is usually invisible. To optimize and make models more intelligent, this paper aims to propose a perceptible design to detect the internal temperature change transformed by other energy versions like stress or torsion. Design/methodology/approach In this paper, micron diamond particles were embedded in 3D printed geopolymers as a potential thermal sensor material to detect the inner heat change. The authors use synthetic micron diamond powder to reinforced the anti-corrosion properties and thermal conductivity of geopolymer and apply this novel geopolymer slurry in the direct ink writing (DIW) technique. Findings As a result, the addition of micron diamond powder can greatly influence the rheology of geopolymer slurry and make the geopolymer slurry extrudable and suitable for DIW by reducing the slope of the viscosity of this inorganic colloid. The heat transfer coefficient of the micron diamond (15 Wt.%)/geopolymer was 50% higher than the pure geopolymer, which could be detected by the infrared thermal imager. Besides, the addition of diamond particles also increased the porous rates of geopolymer. Originality/value In conclusion, DIW slurry deposition of micron diamond-embedded geopolymer (MDG) composites could be used to manufacture the multi-functional geological model for thermal imaging and defect detection, which need the characteristic of lightweight, isolation, heat transfer and wave absorption.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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  2. 2017 - Beyond the concepts of nanocomposite and 3D printing: PVA and nanodiamonds for layer-by-layer additive manufacturing [Crossref]
  3. 2016 - Extraction of thermal characteristics of surrounding geological layers of a geothermal heat exchanger by 3D numerical simulations [Crossref]
  4. 2010 - Status review of the science and technology of ultrananocrystalline diamond (UNCD (TM)) films and application to multifunctional devices
  5. 2005 - Resistance of geopolymer materials to acid attack [Crossref]
  6. 2012 - Ferroferric oxide/multiwalled carbon nanotube vs polyaniline/ferroferric oxide/multiwalled carbon nanotube multiheterostructures for highly effective microwave absorption [Crossref]
  7. 2010 - Research on theory and application of landslide model test [Crossref]
  8. 2007 - Workability and strength of coarse high calcium fly ash geopolymer [Crossref]
  9. 2007 - The thermal evolution of metakaolin geopolymers: part 2 - phase stability and structural development
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