Modares Mechanical Engineering

Modares Mechanical Engineering

Investigating the Effect of Polyester UV Absorber on the Quality of Printed Polymer Parts in Digital Light Processing Method

Document Type : Original Research

Abstract
Using optical absorbers is one approach to manage and decrease the intensity of any light source. The digital light processing (DLP) additive manufacturing system created and implemented by the authors of this article was utilized in this study to examine the impact of ultraviolet light absorber on the quality of manufacturing 3D items. The article's major objectives are to enhance part appearance quality, maximize printing control, and reduce excess light, but in order to do so, it is crucial to measure the height of separation, the degree of part damage and the Separation Force. Undoubtedly, one of the factors having the most impact on the aforementioned scenarios will be the optical absorber. Therefore, in this system, acrylic sheets are coated with polyester films that have an absorption percentage of 45% at specific distances from the light source. Then, using the DLP method, three-dimensional models were created and assessed by measuring the intensity of the transmitted light. According to the study's findings, using absorbers decreased the time it took to separate each layer by 3.5 times, cut the time it took to print a part by 43%, and increased the success of printing, while also increasing the product's aesthetic quality.
Keywords
Additive Manufacturing
Digital light processing
Uv absorber
Polymer
Quality

Subjects

"1- White L. Additive Manufacturing Materials: Standards, Testing and Applicability: Nova Publishers; 2015.
2- Brewer F. Additive manufacturing: costs, cost effectiveness and industry economics: Nova Science Publishers, Incorporated; 2015.
3- Ligon SC, Husár B, Wutzel H, Holman R, Liska R. Strategies to reduce oxygen inhibition in photoinduced polymerization. Chemical reviews. 2014;114(1): 557-89.
4- Layani M, Wang X, Magdassi S. Novel materials for 3D printing by photopolymerization. Advanced Materials. 2018;30(41):1706344.
5- Huang YM, Jiang CP. On-line force monitoring of platform ascending rapid prototyping system. Journal of materials processing technology. 2005;159(2):257-64.
6- Tumbleston JR, Shirvanyants D, Ermoshkin N, Janusziewicz R, Johnson AR, Kelly D, Chen K, Pinschmidt R, Rolland JP, Ermoshkin A, Samulski ET. Continuous liquid interface production of 3D objects. Science. 2015;347(6228):1349-52.
7- De Beer MP, Van Der Laan HL, Cole MA, Whelan RJ, Burns MA, Scott TF. Rapid, continuous additive manufacturing by volumetric polymerization inhibition patterning. Science advances. 2019;5(1).
8- Regehly M, Garmshausen Y, Reuter M, König NF, Israel E, Kelly DP, Chou CY, Koch K, Asfari B, Hecht S. Xolography for linear volumetric 3D printing. Nature. 2020;588(7839):620-4.
9- Hornbeck LJ, editor Digital light processing for high-brightness high-resolution applications. Projection Displays III; 1997: SPIE.
10- Wang Y, Wang H, Li X, Liu D, Jiang Y, Sun Z. /UV Synergistic Aging of Polyester Polyurethane Film Modified by Composite UV Absorber. Journal of Nanomaterials, 2013."
Modares Mechanical Engineering
Volume 22, Issue 10
October 2022
Pages 259-263