Research on 3D printing process and properties of diamond–resin composites based on digital light processing

Meng, Xiaoyan; Wen-xin, Yang; Deng, Xin

doi:10.1016/j.diamond.2021.108715

Cited by 8 publications

(1 citation statement)

References 23 publications

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“…In this context, additive technologies offer a promising approach for the flexible production of innovative grinding tools. Several publications have already shown that additive manufacturing of diamond tools is possible using digital light processing (DLP), selective laser melting (SLM) and stereolithography (SL) [4][5][6]. In contrast of the laser-based processes, only a few approaches for manufacturing tools by extruding processes, such as fused layer modeling (FLM), exist so far.…”

Section: Introductionmentioning

confidence: 99%

Development of individually designed, additively manufactured fine grinding tools with a hybrid bond for processing inorganic, non-metallic materials

Knauf,

Katzer,

Henkel

et al. 2024

Eleventh European Seminar on Precision Optics Manufacturing

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In this article, a concept for the additive manufacturing (AM) of ultra-fine grinding tools is presented, which enables a flexible and efficient production with defined surface properties (e.g. grain size, concentration, integrated cooling channels). The basis of this innovative concept is a newly developed filament consisting of a compound of polyamide 12 (PA12), zirconium oxide particles (ZrO2) and integrated diamond grains with an average grain size of 15 µm. The overall aim of the investigations is to examine the behavior and properties of these tools during a CNC machining process in relation to conventional resin-bonded tools so that quality, process efficiency and cost-effectiveness can be optimized. Using different additive manufacturing parameters, tools are produced by fused layer modelling (FLM) and tested in a fine grinding process on planar fused silica samples. The grinding tests show that it is possible to produce reflective, transparent surfaces with high surface qualities. In addition, reproducible surface roughness (Rq = 10.5 -13.5 nm) can be generated, which, compared to the initial ground surface of the samples, results in a reduction in surface roughness of 97 -98 %. Furthermore, partially better-quality results are achieved with the new tools compared to a conventional resin-bonded tool, which demonstrates the promising potential of additively manufactured fine grinding tools.

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Section: Introductionmentioning

confidence: 99%

Development of individually designed, additively manufactured fine grinding tools with a hybrid bond for processing inorganic, non-metallic materials

Knauf,

Katzer,

Henkel

et al. 2024

Eleventh European Seminar on Precision Optics Manufacturing

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Study of Magnetic Hydrogel 4D Printability and Smart Self‐Folding Structure

Deng,

Sun,

et al. 2024

Adv Eng Mater

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4D printing technology offers the potential to create smart structures that respond to external stimuli. This study focuses on a novel magnetic hydrogel with promising applications in 4D printing, particularly for medical devices such as guidewire robots, drug delivery systems, and vascular stents. Magnetic‐responsive hydrogels suitable for 4D printing are scarce, and their complex rheological properties pose challenges for printing. The study investigates these properties and optimizes them through adjustments in ink composition and the application of an external magnetic field, improving printability. Using the direct writing (DLP) method, which allows magnetic programming of individual strands, the study achieves greater flexibility compared to the traditional SLA method. Optimized printing parameters and material ratios produced high‐quality single strands, grids, and sheet‐like structures, demonstrating responsiveness to varying magnetic fields. Results confirm that DLP can be effectively applied to hydrogel 4D printing, achieving flexible structures with tunable mechanical properties. Additionally, magnetic‐responsive, self‐folding hydrogel structures were created, with a response speed of 180 ms under a magnetic field. This research establishes a foundation for magnetic hydrogel 4D printing and offers insights for the development of future smart medical devices.

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Digital light processing printed resin based conductive composites with CF@Ag and HGMs@Ag as fillers for metamaterial absorbers

Li,

Wang,

et al. 2024

Polymer Composites

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An integrated fabrication process based on multi‐material Digital Light Processing (DLP) technique for metamaterial absorbers (MMAs) is proposed. Considering the requirements of the DLP process for the rheological properties and photocuring properties of the slurry, a photopolymer resin slurry was developed using silver‐plated carbon fiber (CF@Ag) and silver‐plated hollow glass microspheres (HGMs@Ag) as conductive fillers. To meet the conductivity requirements of resistive films in MMAs, the study systematically investigated the influence of material parameters and DLP process parameters on the conductivity and precision of the fabricated patterns. Optimized DLP parameters for isotropic photocurable conductive composites with high conductivity and low percolation thresholds were obtained. Additionally, a MMAs was designed to achieve effective absorption in the wavelength range of 7 to 28 GHz. The absorber utilized a resistive film with a thickness of 30 μm and an average surface resistivity of 23 ohm/sq., prepared using a photocurable resin filled with a total mass fraction of 35 wt% CF@Ag and HGMs@Ag in a 2:1 mass ratio. This work shows that it is feasible to fabricate resistive film patterns with prescribed surface resistivity and geometric shapes through DLP printing directly without sintering, providing a promising process for the integrated manufacturing of high‐performance MMAs.Highlights Developed a conductive slurry using the synergy between CF@Ag and HGMs@Ag. Proposed the preparation process of resistance controllable resistive film. The first demonstration of manufacturing resistive film‐type MMAs via DLP.

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Research on 3D printing process and properties of diamond–resin composites based on digital light processing

Cited by 8 publications

References 23 publications

Development of individually designed, additively manufactured fine grinding tools with a hybrid bond for processing inorganic, non-metallic materials

Development of individually designed, additively manufactured fine grinding tools with a hybrid bond for processing inorganic, non-metallic materials

Study of Magnetic Hydrogel 4D Printability and Smart Self‐Folding Structure

Digital light processing printed resin based conductive composites with CF@Ag and HGMs@Ag as fillers for metamaterial absorbers

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