Study on the liquid crystal display mask photo‐curing of photosensitive resin reinforced with graphene oxide

Xie, Jiaqing; He, Yunsheng; Ma, Wenqiang; Liu, Tao; Chen, Jun

doi:10.1002/app.49538

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…The device adopted 405 nm ultraviolet light as the curing light source and the LCD panel as the selective light transmission plate to realize the curing of photosensitive resin for complex parts. Figure 2 is the schematic diagram of the LCD mask photo-curing machine: the machine includes platform, Z axis, material trough and LCD panel, and the incident position of the light source can be controlled by the LCD panel [ 27 ]. The shape of cured resin parts was observed by the laser microscope (VHX-1000, KEYENCE Co., Ltd., Osaka, Japan) with a display resolution of height 0.005 μm and width 0.01 μm.…”

Section: Methodsmentioning

confidence: 99%

Development of Rapid and High-Precision Colorimetric Device for Organophosphorus Pesticide Detection Based on Microfluidic Mixer Chip

et al. 2021

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The excessive pesticide residues in cereals, fruit and vegetables is a big threat to human health, and it is necessary to develop a portable, low-cost and high-precision pesticide residue detection scheme to replace the large-scale laboratory testing equipment for rapid detection of pesticide residues. In this study, a colorimetric device for rapid detection of organophosphorus pesticide residues with high precision based on a microfluidic mixer chip was proposed. The microchannel structure with high mixing efficiency was determined by fluid dynamics simulation, while the corresponding microfluidic mixer chip was designed. The microfluidic mixer chip was prepared by a self-developed liquid crystal display (LCD) mask photo-curing machine. The influence of printing parameters on the accuracy of the prepared chip was investigated. The light source with the optimal wavelength of the device was determined by absorption spectrum measurement, and the relationship between the liquid reservoir depth and detection limit was studied by experiments. The correspondence between pesticide concentration and induced voltage was derived. The minimum detection concentration of the device could reach 0.045 mg·L−1 and the average detection time was reduced to 60 s. The results provide a theoretical and experimental basis for portable and high-precision detection of pesticide residues.

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Section: Methodsmentioning

confidence: 99%

Development of Rapid and High-Precision Colorimetric Device for Organophosphorus Pesticide Detection Based on Microfluidic Mixer Chip

et al. 2021

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“…The principle of LCD is similar to DLP but uses a UV light as light source (usually in 405 nm wavelength) and an LCD screen as virtual mask instead of using a DLP projector. Liquid crystal molecules in the display panel rotate when applying an electric current through them, which allows light to either pass through or be blocked, thus creating a virtual mask for selective UV exposure of the photopolymer resin [68]. Consequently, the part is 3D printed in a layer-by-layer fashion, identical to the DLP technology.…”

Section: Continuous Liquid Interface Production (Clip)mentioning

confidence: 99%

Curing Characteristics of a Photopolymer Resin with Dispersed Glass Microspheres in Vat Polymerization 3D Printing

Liang,

Francoeur,

Williams

et al. 2023

ACS Appl. Polym. Mater.

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The curing characteristics of a photopolymer resin determine the relationship between the vat polymerization (VP) process parameters and the layer thickness, geometric accuracy, and surface roughness of the three-dimensional (3D) printed specimens. Dispersing a filler material into the photopolymer resin to modify the properties of the specimens changes the curing characteristics because the filler scatters, absorbs, and transmits light, which alters the photopolymerization reaction. However, the ability to cure the photopolymer resin with a high filler volume fraction is important to 3D print specimens for specific applications, such as composite and ceramic materials for biological and high-temperature environments. We specifically consider a translucent filler and methodically measure the curing characteristics of a diacrylate/epoxy photopolymer resin with dispersed translucent glass microspheres. Experiments relate the curing depth, degree-of-cure, geometric accuracy, and surface roughness to the exposure dose, filler fraction, and filler size distribution. The curing depth depends on two competing effects: light scattering and light transmission through the translucent filler, and it increases with increasing filler fraction for low exposure dose, which contrasts results documented by others for VP with an opaque filler. Furthermore, the degree-of-cure increases with increasing filler fraction for a constant exposure dose. The geometric accuracy and surface roughness of the 3D printed specimens decrease with increasing exposure dose and filler fraction. This work has implications for VP of photopolymer resins with high filler fraction in the context of manufacturing of engineered materials.

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“…To improve the mechanical characteristics of cured components, Xie and He et al [ 47 ] manufactured a nanocomposite of graphene oxide and resin using a liquid crystal display (LCD) mask light curing technique. Excess graphene oxide (0.5 wt.%) was reported to block light and failed to print.…”

Section: Types Of 3d Printingmentioning

confidence: 99%

3D Printing and Shaping Polymers, Composites, and Nanocomposites: A Review

et al. 2022

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Sustainable technologies are vital due to the efforts of researchers and investors who have allocated significant amounts of money and time to their development. Nowadays, 3D printing has been accepted by the main industry players, since its first establishment almost 30 years ago. It is obvious that almost every industry is related to technology, which proves that technology has a bright future. Many studies have shown that technologies have changed the methods for developing particular products. Three-dimensional printing has evolved tremendously, and currently, many new types of 3D printing machines have been introduced. In this paper, we describe the historical development of 3D printing technology including its process, types of printing, and applications on polymer materials.

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Study on the liquid crystal display mask photo‐curing of photosensitive resin reinforced with graphene oxide

Cited by 6 publications

References 24 publications

Development of Rapid and High-Precision Colorimetric Device for Organophosphorus Pesticide Detection Based on Microfluidic Mixer Chip

Development of Rapid and High-Precision Colorimetric Device for Organophosphorus Pesticide Detection Based on Microfluidic Mixer Chip

Curing Characteristics of a Photopolymer Resin with Dispersed Glass Microspheres in Vat Polymerization 3D Printing

3D Printing and Shaping Polymers, Composites, and Nanocomposites: A Review

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