Binder jetting 3D printing rock analogs using magnesium phosphate cement

Ma, Guowei; Hu, Tingyu; Li, Zhijian

doi:10.1016/j.conbuildmat.2024.135620

Cited by 8 publications

(1 citation statement)

References 58 publications

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“…The inability of such methods to produce complex parts with high precision and high porosity, in addition to the high cost involved and environmental concerns related to use, demanded a more economical and flexible method of production. Most of the existing methods employ subtractive manufacturing methodologies but their limitation in producing complex shapes gave rise to the growth of additive manufacturing techniques like selective laser sintering (SLS) [ 7 ], stereolithography (SLA) [ 8 , 9 , 10 ], laminated object manufacturing (LOM) and binder jet printing (BJP) [ 11 , 12 ]. Fused deposition modelling (FDM) is a widely used 3D printing method, but the products sometimes suffer from delamination, poor accuracy, and heat shrinking of the resin [ 11 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Characteristics of Nano-Graphite Composites Additively Manufactured Using Stereolithography

Nugraha,

Kumar,

Gautama

et al. 2024

Polymers

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Stereolithography has emerged as a recent method in fabricating complex structures with high accuracy. Components using resin have poorer properties. The current study investigates the improvement in the properties of nano-graphite composites fabricated by the SLA technique. The properties are compared for plain resin and 0.2%, 0.5%, 1%, 3%, and 5% (w/v) of nano-graphite mixed with the UV-curable resin. Various analyses were conducted, including viscosity, UV spectroscopy, moisture content, water absorption, gel content, tensile, bending, hardness testing, and microscopic characterization. The results from the experiments showed a difference in the results of each percentage of the specimen tested, such as the specimen property, which shows that the greater the percentage of nano-graphite added (5%), the opaquer the specimen will appear and less light will be reflected. Viscosity testing shows that the greater the percentage of nano-graphite added to the resin, the greater the viscosity. UV spectroscopy testing produced information about the electronic structure and the structure of molecules, such as their composition, purity, and concentration. Observations from the moisture content analysis found that the moisture content in specimens with higher percentages of nano-graphite affected physical and mechanical properties, leading to easier warping, cracking, decreased strength, etc. Tensile and bending testing shows that the greater the percentage of nano-graphite added, the greater the effect on physical and mechanical properties, including fracture. However, certain tests did not consistently yield significant variations among specimens when different percentages of nano-graphite were added, as particularly evident in chemical resistance testing. This study offers valuable insights into the application of nano-graphite composites fabricated via the SLA method.

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