Yellow resistant photosensitive resin for digital light processing 3D printing

ABSTRACT Digital light processing (DLP) has been studied and developed in the field of three‐dimensional (3D) printing in recent years due to its fast curing rate and high resolution. To reduce the cost and viscosity of the resin system, the aromatic polyurethane acrylates (PUAs) were used as oligom...

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Bibliographic Details
Published in:Journal of applied polymer science 2020-02, Vol.137 (7), p.n/a
Main Authors: Cheng, Qingkui, Zheng, Yan, Wang, Tao, Sun, Dongli, Lin, Runxiong
Format: Article
Language:English
Subjects:
3-D printers
3D printing
Acrylates
Bisphenol A
digital light processing
Heat resistance
Hydroxyethyl acrylate
Isocyanates
Materials science
Mechanical properties
Oligomers
photosensitive resin
Photosensitivity
Polyhydroxyethyl methacrylate
Polymers
Polyoxyethylene
polyurethane acrylates
Polyurethane resins
Product development
Thermal resistance
Three dimensional printing
Ultraviolet radiation
Viscosity
Yellowing
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Summary:ABSTRACT Digital light processing (DLP) has been studied and developed in the field of three‐dimensional (3D) printing in recent years due to its fast curing rate and high resolution. To reduce the cost and viscosity of the resin system, the aromatic polyurethane acrylates (PUAs) were used as oligomer. The matrix resin called PUH2 consists of oligomers (PUA, bisphenol A polyoxyethylene ether dimethyl acrylate) and active diluents (hydroxyethyl acrylate, hydroxyethyl methacrylate). However, the photosensitive resin containing aromatic isocyanate groups was easily yellowed under ultraviolet light. In this article, we developed a resin for DLP 3D printing with yellowing resistance, excellent mechanical properties and high heat resistance. The optimal ratio of 3DP‐PUH2 resin was PUH2/TPO/RYOJI‐292/dye/nanosilica = 100/5/0.4/0.01/0.1, and its viscosity was 500 cp, which is suitable for DLP 3D printing. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48369.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.48369