Effects of slurry mixing methods and solid loading on 3D printed silica glass parts based on DLP stereolithography

Cai, Peng; Liang, Guo; Wang, Hao; Li, Jiaming; Li, Jintao; Qiu, Yixin; Zhang, Qingmao; Lue, Qitao

doi:10.1016/j.ceramint.2020.03.260

Cited by 61 publications

(33 citation statements)

References 25 publications

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“…The amount of SiO 2 nanoparticle incorporation is an important parameter of "liquid glass", as high incorporation results in lower linear shrinkage after sintering and higher production precision [15,36]. However, the higher content of SiO 2 leads to the high viscosity of the "liquid glass" system, which is not conducive to 3D printing; a lower content of SiO 2 is good for printing but leads to the collapse and cracking of the molded object, and this contradiction is the main problem that limits the development of silica nano resin blends [36].…”

Section: Viscosity Reduction Methods For "Liquid Glass"mentioning

confidence: 99%

“…The slurry could also be dried and sintered to obtain transparent glass devices, but due to the low solids loading, it resulted in a linear shrinkage of 33-56% and exhibited non-isotropic shrinkage and a low preparation efficiency of up to 7 days for the whole process. To address the shortcomings of the sol-gel method, Peng Cai et al investigated the effects of the slurry mixing method and solid content on the rheology of "liquid glass" and concluded that the viscosity of the multi-step mixing method was less than that of the one-step mixing method at different solid contents [36]. When the solid content of the slurry was 60 wt%, the viscosity of the multi-step mixing method and the one-step mixing method was 2059.7 mPa s and 5461.2 mPa s, respectively, at a shear rate of 0.1 s −1 , with a difference of 3401.5 mPa s. The diagram of the slurry preparation is presented in Figure 7II.…”

Section: Viscosity Reduction Methods For "Liquid Glass"mentioning

confidence: 99%

“…All the schematics of the technologies is shown in Figure 1. Samples fabricated using these methods require a reasonable heat treatment process to form silica glass [36][37][38]. These methods are described below, focusing on the printing resolution and speed, the requirements for the material ratio that serve as guidelines for selecting the appropriate method, and techniques for improving the printing quality and efficiency.…”

Section: Classification Of 3d Printing Glass Technologiesmentioning

confidence: 99%

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Overview of 3D-Printed Silica Glass

et al. 2022

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Not satisfied with the current stage of the extensive research on 3D printing technology for polymers and metals, researchers are searching for more innovative 3D printing technologies for glass fabrication in what has become the latest trend of interest. The traditional glass manufacturing process requires complex high-temperature melting and casting processes, which presents a great challenge to the fabrication of arbitrarily complex glass devices. The emergence of 3D printing technology provides a good solution. This paper reviews the recent advances in glass 3D printing, describes the history and development of related technologies, and lists popular applications of 3D printing for glass preparation. This review compares the advantages and disadvantages of various processing methods, summarizes the problems encountered in the process of technology application, and proposes the corresponding solutions to select the most appropriate preparation method in practical applications. The application of additive manufacturing in glass fabrication is in its infancy but has great potential. Based on this view, the methods for glass preparation with 3D printing technology are expected to achieve both high-speed and high-precision fabrication.

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Section: Viscosity Reduction Methods For "Liquid Glass"mentioning

confidence: 99%

Section: Viscosity Reduction Methods For "Liquid Glass"mentioning

confidence: 99%

Section: Classification Of 3d Printing Glass Technologiesmentioning

confidence: 99%

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Overview of 3D-Printed Silica Glass

et al. 2022

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“…They could create arbitrary macroand microstructures from photocurable silica nanocomposites, thereby broadening the selection of 3D printing materials. Cai et al [20] pointed out the influence of solid loading and mixing methods on silica glass fabricated by digital light processing (DLP). Their experimental data showed that the viscosity of slurry could be reduced effectively by the multi-step mixing method compared with the one-step mixing method.…”

Section: Introduction mentioning

confidence: 99%

Influence of Al2O3 content on mechanical properties of silica-based ceramic cores prepared by stereolithography

Wen

Chen

et al. 2021

J Adv Ceram

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Silica ceramic cores have played an important part in the manufacture of hollow blades due to their excellent chemical stability and moderate high-temperature mechanical properties. In this study, silica-based ceramics were prepared with Al2O3 addition by stereolithography, and the influence of Al2O3 content on mechanical properties of the silica-based ceramics was investigated. The Al2O3 in silica-based ceramics can improve the mechanical properties by playing a role as a seed for the crystallization of fused silica into cristobalite. As a result, with the increase of Al2O3 content, the linear shrinkage of the silica-based ceramics first decreased and then increased, while the room-temperature flexural strength and the high-temperature flexural strength first increased and then decreased. As the Al2O3 content increased to 1.0 vol%, the linear shrinkage was reduced to 1.64% because of the blocked viscous flow caused by Al2O3. Meanwhile, the room-temperature flexural strength and the high-temperature flexural strength were improved to 20.38 and 21.43 MPa with 1.0 vol% Al2O3, respectively, due to the increased α-cristobalite and β-cristobalite content. Therefore, using the optimal content of Al2O3 in silica-based ceramics can provide excellent mechanical properties, which are suitable for the application of ceramic cores in the manufacturing of hollow blades.

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“…They could create arbitrary macro-and microstructures from photocurable silica nanocomposites, thereby broadening the selection of 3D printing materials. Cai et al [20] pointed out the influence of solid loading and mixing methods on silica glass fabricated by DLP. Their experimental data showed that the viscosity of slurry could be reduced effectively by the multi-step mixing method compared with the one-step mixing method.…”

mentioning

confidence: 99%

Influence of Al2O3 Content on Mechanical Properties of Silica-based Ceramic Cores Prepared by Stereolithography

Wen

Chen

et al. 2021

Preprint

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Silica ceramic cores have played an important role in the manufacture of hollow blades due to its excellent chemical stability and moderate high-temperature mechanical properties. In this study, silica-based ceramics were prepared by stereolithography and the influence of Al2O3 content on mechanical properties of the silica-based ceramics was investigated. With the increase of Al2O3 content, the linear shrinkage of the silica-based ceramics first decreased and then increased, while the room-temperature flexural strength and the high-temperature flexural strength first increased and then decreased. As the Al2O3 content increased to 1.0 vol.%, the linear shrinkage was reduced to 1.64% because of the blocked viscous flow. Meanwhile, the room-temperature flexural strength and the high-temperature flexural strength were respectively improved to 20.38 MPa and 21.43 MPa with 1.0 vol.% Al2O3 due to the increased α-cristobalite and β-cristobalite content. Therefore, using the optimal content of Al2O3 in silica-based ceramics can provide excellent mechanical properties and ensure the reliability of silica-based ceramic cores for manufacturing hollow blades.

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Effects of slurry mixing methods and solid loading on 3D printed silica glass parts based on DLP stereolithography

Cited by 61 publications

References 25 publications

Overview of 3D-Printed Silica Glass

Overview of 3D-Printed Silica Glass

Influence of Al2O3 content on mechanical properties of silica-based ceramic cores prepared by stereolithography

Influence of Al2O3 Content on Mechanical Properties of Silica-based Ceramic Cores Prepared by Stereolithography

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