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Yellow resistant photosensitive resin for digital light processing 3D printing
Author(s) -
Cheng Qingkui,
Zheng Yan,
Wang Tao,
Sun Dongli,
Lin Runxiong
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48369
Subject(s) - polymer chemistry , polyurethane , materials science , acrylate , curing (chemistry) , methacrylate , chemical engineering , chemistry , polymer , composite material , polymerization , copolymer , engineering
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 PUH 2 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‐PUH 2 resin was PUH 2 /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.