Effect of post-processing conditions on polyacrylate materials used in stereolithography

Cingesar, Ivan Karlo; Marković, Marijan-Pere; Vrsaljko, Domagoj

doi:10.1016/j.addma.2022.102813

Cited by 11 publications

(12 citation statements)

References 28 publications

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“…The homogeneity in a single layer can be improved by the reduction of the layer thickness, which is detrimental to the fabrication time. This also plays a role in the optimization of post-sintering mechanical properties [28]. ) and 3D visualization of the corresponding cross-section position (in red).…”

Section: Comparison Between Numerical and Experimental Resultsmentioning

confidence: 99%

Development of a 3D model to predict curing dimensions and conversion rates of curable ceramic systems during stereolithography 3D printing process

Vallet

Pateloup

Michaud

et al. 2022

Journal of the European Ceramic Society

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Section: Comparison Between Numerical and Experimental Resultsmentioning

confidence: 99%

Development of a 3D model to predict curing dimensions and conversion rates of curable ceramic systems during stereolithography 3D printing process

Vallet

Pateloup

Michaud

et al. 2022

Journal of the European Ceramic Society

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“…In the PreForm 3D, the tensile models were on-edge with a 45-degree orientation on the platform, as previous studies presented superior mechanical properties than other orientations (Cingesar et al , 2022; Shirinbayan et al , 2022; Chantarapanich et al , 2013). For compressive models, they were oriented at a 0-degree angle on the platform.…”

Section: Methodsmentioning

confidence: 99%

“…Various publications have reported the study results of VPP part mechanical strength for different manufacturing parameters and post-curing processes. Some of the studies revealed that a 45-degree angle on the platform build orientation results in higher tensile strength compared to other platform orientations (Cingesar et al , 2022; Shirinbayan et al , 2022; Chantarapanich et al , 2013). Also, previous reports have shown the significance of aging and pre-conditioning on the mechanical properties of VPP part (Puebla et al , 2012; Mansour et al , 2007).…”

Section: Introductionmentioning

confidence: 99%

Effects of post-processing curing parameters and gamma irradiation on the mechanical properties of medical graded vat photopolymerization parts

Daoset,

Inglam,

Wanchat

et al. 2024

RPJ

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Purpose This paper aims to investigate the influence of post-curing temperature, post-curing time and gamma ray irradiation dose upon the tensile and compressive mechanical properties of the medical graded vat photopolymerization parts. Design/methodology/approach Medical graded vat photopolymerization specimens, made from photopolymer resin, were fabricated using bottom-up vat photopolymerization machine. Tensile and compressive tests were conducted to assess the mechanical properties. The specimens were categorized into uncured and post-curing groups. Temperature post-processing and/or gamma irradiation exposure were for post-curing specimens. The post-curing parameters considered included temperature levels of 50°C, 60°C and 70°C, with 1, 2, 3 and 4 h periods. For the gamma irradiation, the exposure doses were 25, 50, 75 and 100 kGy. Findings Post-curing improved the mechanical properties of medical graded vat photopolymerization parts for both tensile and compressive specimens. Post-curing temperature greater than 50°C or a prolonged post-curing period of more than 1 h made insignificant changes or deterioration in mechanical properties. The optimal post-curing condition was therefore a 50°C post-curing temperature with 1 h post-curing time. Exposure to gamma ray improved the compressive mechanical properties, but deteriorated tensile mechanical properties. Higher gamma irradiation doses could decrease the mechanical properties and also make the part more brittle, especially for doses more than 25 kGy. Originality/value The obtained results would be beneficial to the medical device manufacturer who fabricated the invasive temporary contact personalized surgical instruments by vat photopolymerization technique. In addition, it also raised awareness in excessive gamma sterilization in the medical graded vat photopolymerization parts.

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“…36 The scaffolds need to be post-cured after printing to enhance the mechanical properties of the printed scaffolds, and there is a significant positive correlation between the mechanical properties and the curing time. 66 In addition, resin viscosity is also closely related to the mechanical properties and printing accuracy of light-cured scaffolds. 67 In order to ensure the precision of scaffolds in 3D printing, the viscosity of the resin needs to be reduced.…”

Section: Stereolithography (Sla) and Digital Light Processing (Dlp)mentioning

confidence: 99%

Mechanism and application of 3D-printed degradable bioceramic scaffolds for bone repair

Lin,

Zhang,

Zhang

et al. 2023

Biomater. Sci.

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Effect of post-processing conditions on polyacrylate materials used in stereolithography

Cited by 11 publications

References 28 publications

Development of a 3D model to predict curing dimensions and conversion rates of curable ceramic systems during stereolithography 3D printing process

Development of a 3D model to predict curing dimensions and conversion rates of curable ceramic systems during stereolithography 3D printing process

Effects of post-processing curing parameters and gamma irradiation on the mechanical properties of medical graded vat photopolymerization parts

Mechanism and application of 3D-printed degradable bioceramic scaffolds for bone repair

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