Additive manufacturing of flexible polymer-derived ceramic matrix composites

Ou, Jun; Huang, Minzhong; Wu, Yangyang; Huang, Shengwu; Lü, Jian; Wu, Shanghua

doi:10.1080/17452759.2022.2150230

Cited by 14 publications

(4 citation statements)

References 51 publications

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“…The choice of photoinitiators plays an essential role in vat photopolymerization where selection depends on the specific resin and printing conditions [ 84 ]. Literature search results indicate that diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate(TPO-L), and phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (BAPO) are commonly used as photoinitiators for preceramic materials [ 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 ], and Figure 7 a illustrates their chemical structures. TPO, TPO-L, and BAPO belong to the Norrish type I category, which can effectively generate free radicals through homolytic cleavage of their C-O or C-N bonds upon exposure to light radiation [ 82 ].…”

Section: Additive Manufacturing For Preceramic Polymersmentioning

confidence: 99%

“…Excessive fillers may lead to decreased quality of the final product with increased porosity and reduced mechanical properties, primarily due to decreased continuity of the matrix phase [ 113 ]. Recently, scientists from the same research group introduced another photosensitive preceramic formulation by mixing polysilazane, vinyltrimethoxysilane, aliphatic urethane acrylate, TPO, Sudan III, and a certain amount of ɑ-Si 3 N 4 nanopowder (0–40 wt.%) as an inert filler to make solid structures using DLP [ 85 ]. The flexible 3D printed green structures could be transformed into various shapes, and after pyrolysis, they yielded ceramic nanocomposites while retaining the initial shapes and structures, as presented in Figure 10 .…”

Section: Additive Manufacturing For Preceramic Polymersmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Additive Manufacturing of Advanced Ceramics Using Preceramic Polymers

et al. 2023

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Ceramic materials are used in various industrial applications, as they possess exceptional physical, chemical, thermal, mechanical, electrical, magnetic, and optical properties. Ceramic structural components, especially those with highly complex structures and shapes, are difficult to fabricate with conventional methods, such as sintering and hot isostatic pressing (HIP). The use of preceramic polymers has many advantages, such as excellent processibility, easy shape change, and tailorable composition for fabricating high-performance ceramic components. Additive manufacturing (AM) is an evolving manufacturing technique that can be used to construct complex and intricate structural components. Integrating polymer-derived ceramics and AM techniques has drawn significant attention, as it overcomes the limitations and challenges of conventional fabrication approaches. This review discusses the current research that used AM technologies to fabricate ceramic articles from preceramic feedstock materials, and it demonstrates that AM processes are effective and versatile approaches for fabricating ceramic components. The future of producing ceramics using preceramic feedstock materials for AM processes is also discussed at the end.

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Section: Additive Manufacturing For Preceramic Polymersmentioning

confidence: 99%

Section: Additive Manufacturing For Preceramic Polymersmentioning

confidence: 99%

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Additive Manufacturing of Advanced Ceramics Using Preceramic Polymers

et al. 2023

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“…The application of numerous primary procedures can be broken down into categories such as slurry preparation, printing and forming, drying and sintering, sanding or postprocessing, etc. [11,12]. The extrusion molding principle describes how the ceramic material is made to have specific mobility by adding solvents or heating it physically after it has been extruded externally to a specific caliber (often hundreds of microns to a few millimeters in diameter).…”

Section: Introductionmentioning

confidence: 99%

Machine Vision-Based Surface Defect Detection Study for Ceramic 3D Printing

Zhou,

Li,

et al. 2024

Machines

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A set of online inspection systems for surface defects based on machine vision was designed in response to the issue that extrusion molding ceramic 3D printing is prone to pits, bubbles, bulges, and other defects during the printing process that affect the mechanical properties of the printed products. The inspection system automatically identifies and locates defects in the printing process by inspecting the upper surface of the printing blank, and then feeds back to the control system to produce a layer of adjustment or stop the printing. Due to the conflict between the position of the camera and the extrusion head of the printer, the camera is placed at an angle, and the method of identifying the points and fitting the function to the data was used to correct the camera for aberrations. The region to be detected is extracted using the Otsu method (OSTU) on the acquired image, and the defects are detected using methods such as the Canny algorithm and Fast Fourier Transform, and the three defects are distinguished using the double threshold method. The experimental results show that the new aberration correction method can effectively minimize the effect of near-large selection caused by the tilted placement of the camera, and the accuracy of this system in detecting surface defects reached more than 97.2%, with a detection accuracy of 0.051 mm, which can meet the detection requirements. Using the weighting function to distinguish between its features and defects, and using the confusion matrix with the recall rate and precision as the evaluation indexes of this system, the results show that the detection system has accurate detection capability for the defects that occur during the printing process.

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Vat photopolymerization 3D printing of polymer-derived SiOC ceramics with high precision and high strength

He,

Wang,

et al. 2023

Additive Manufacturing

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Additive manufacturing of flexible polymer-derived ceramic matrix composites

Cited by 14 publications

References 51 publications

Additive Manufacturing of Advanced Ceramics Using Preceramic Polymers

Additive Manufacturing of Advanced Ceramics Using Preceramic Polymers

Machine Vision-Based Surface Defect Detection Study for Ceramic 3D Printing

Vat photopolymerization 3D printing of polymer-derived SiOC ceramics with high precision and high strength

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