Integración De La Impresión 3d en El Proceso De Cera Perdida Para La Producción De Joyas, Con Fines De Estandarización

Vega, Leidy Y; Mesa, Laura M

doi:10.23850/22565035.1933

Cited by 3 publications

(4 citation statements)

References 23 publications

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“…A decrease in the carbonyl band (1714 cm − 1 ) was also observed. A peak appeared at 1814 cm − 1 , corresponding to stretching of the carbonyl group [ 32 ]. At 1640 cm − 1 , a peak appeared that is characteristic of the stretching of the carboxylate groups.…”

Section: Resultsmentioning

confidence: 99%

Effects of Steam Heat and Dry Heat Sterilization Processes on 3D Printed Commercial Polymers Printed by Fused Deposition Modeling

et al. 2022

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Fused deposition modeling (FDM), the most widely used additive manufacturing (AM) technology, is gaining considerable interest in the surgical sector for the production of single-use surgical devices that can be tailor-made according to specific requirements (e.g., type of patient surgery, specific shapes, etc.) due to its low cost, ease of access to materials (3D-printing filament), and the relatively low complexity. However, surgical 3D-printing parts should resist sterilization treatments without losing structural, mechanical, and dimensional accuracy. Thus, in this work, 3D-filaments based on poly(lactic acid) (PLA), poly(ethylene glycol-co-1,4-cyclohexanedimethanol terephthalate) (PETG), and a modified PETG material (CPE) were used to produce 3D-printed parts and further subjected to moist heat (MH) and dry heat (DH) sterilization processes as affordable and widely used sterilization processes in the medical field. The effect of MH and DH was evaluated by performing a complete mechanical, structural, thermal, and morphological characterization before and after both treatments. In general, the moist heat treatment produced a higher degradation of the polymeric matrix of PETG and CPE due to hydrolytic and thermal degradation, particularly affecting the tensile test and flexural properties. For instance, the linear coefficient of thermal expansion (LCTE) before glass transition temperature (Tg) increased 47% and 31% in PETG samples due to the MH and DH, respectively, while it increased 31% in CPE due to MH and was mainly maintained after the DH process. Nevertheless, in PLA, the MH produced an increase of 20% in LCTE value and the DH showed an increase of 33%. Dry heat treatment resulted in being more suitable for medical applications in which dimensional accuracy is not a key factor and there are no great mechanical demands (e.g., surgical guides).

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Section: Resultsmentioning

confidence: 99%

Effects of Steam Heat and Dry Heat Sterilization Processes on 3D Printed Commercial Polymers Printed by Fused Deposition Modeling

et al. 2022

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“…As a fashion element appearing in the contemporary jewelry market, it is facing some problems, such as a lack of innovation in design style, being too simple, and not meeting people's needs for visual beauty, thereby affecting consumers' purchasing desire. For consumers, wearing jewelry is a sense of enjoyment and pleasure [11][12]. For the product itself, it reflects the relationship, mutual influence, and coordination between consumers and enterprises.…”

Section: Design Of Jewelrymentioning

confidence: 99%

Penetration of Green Design Concept in Jewelry Design in the Era of Internet of Things

2023

ieim

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With the continuous economic development, people's living standard has been significantly improved. However, with this comes an obvious disconnect between traditional industrial design concepts and modern civilization. Therefore, an effective innovation of modern jewelry is essential. In this paper, jewelry is studied and analyzed from the perspective of Internet of Things (IoT) technology, and methods to solve its problems such as green quality and humanized design are discussed. After that, this paper studies the jewelry design system based on IoT technology and tests and analyzes the basic architecture of the system. The test results show that the memory resource data usage of the system is between 3654k-3782k. It is hoped that these research results can provide a reference basis and thought guidance for the healthy, sustainable and stable development of the economy.

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“…Los materiales usados en manufactura aditiva no cumplen las propiedades mecánicas, térmicas, eléctricas, tribológicas, medioambientales u ópticas requeridas para ciertas aplicaciones, por lo que es necesario que estos se mezclen con otros materiales para mejorar sus propiedades, es típico que el material resultante de la mezcla tenga mejores propiedades que el material original [70]. Debido a esto, se han creado diferentes combinaciones de materiales que mejoran las propiedades del filamento para impresión por MEX, como por ejemplo la adición de grafeno para aumentar la conductividad eléctrica [71], [72] y mejorar las propiedades mecánicas [72], [73], la adición de fibras de carbono para hacer al material mecánicamente más resistente e ignífugo [74], [75], [76] la adición de cargas metálicas como bronce, titanio, , cobre, aluminio o acero inoxidable para obtener piezas metálicas luego de la impresión por un proceso de sinterizado [77], [78], [79], la adición de elastómero termoplástico (TPE), elastómero termoplástico de poliamida (TPA) o polivinilo alcohol (PVA) para crear estructuras porosas o usarlos para fundición por cera perdida [80], [81], entre otros.…”

Section: Polímero Aplicaciones Implantables En El Cuerpounclassified

“…En la esterilización por calor húmedo se encuentra un pico de 3480 cm -1 correspondiente a un estiramiento del enlace H del grupo funcional -OH, se observa también disminución en la banda de carbonilo (1714cm -1 ) como resultado de la degradación del éster [79][80]. Aparece un pico en 1814 cm -1 correspondiente a estiramiento del grupo carbonilo [81]. A 1640 cm -1 aparece un pico el cual es característica del estiramiento de los grupos carboxilatos, lo que indica que se formó algo de sal de ácido carboxílico en las muestras expuestas al proceso de esterilización por calor húmedo [82].…”

Section: Cpe-3d Cpe-mh Cpe-dh-3dunclassified

Estudio y diseño de materiales de impresión 3d que soporten los sistemas de esterilización médicos

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Integración De La Impresión 3d en El Proceso De Cera Perdida Para La Producción De Joyas, Con Fines De Estandarización

Cited by 3 publications

References 23 publications

Effects of Steam Heat and Dry Heat Sterilization Processes on 3D Printed Commercial Polymers Printed by Fused Deposition Modeling

Effects of Steam Heat and Dry Heat Sterilization Processes on 3D Printed Commercial Polymers Printed by Fused Deposition Modeling

Penetration of Green Design Concept in Jewelry Design in the Era of Internet of Things

Estudio y diseño de materiales de impresión 3d que soporten los sistemas de esterilización médicos

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