Synthesis and properties of a novel waterborne photosensitive resin for 3D printing

Luo, Qinghong and Zhang, Ting and Xu, Ruijie and Xiang, Hongping and Cui, Yanyan and Li, Zhiquan and Liu, Xiaoxuan (2023) Synthesis and properties of a novel waterborne photosensitive resin for 3D printing. EXPRESS POLYMER LETTERS, 17 (1). pp. 40-53. ISSN 1788-618X

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Abstract

A series of novel waterborne photosensitive resins were prepared successfully with poly(propylene oxide) bis(2-aminopropyl ether), tricyclodecane dimethanol diacrylate, 2-isocyanatoethyl acrylate, and hydrochloric acid by Michael addition reaction. The results show that with the increasing double bonds content, the double bonds conversion increases from 78.7, 85.6 to 92.8% in the photopolymerization, respectively, and the gel content of the UV-cured film increases from 48.05, 69.10 to 83.28%. In addition, the glass transition temperature and tensile strength of the UV-cured film follow the same increasing trend. Moreover, the content of hydrochloride has a great influence on the hydrophilicity of the waterborne photosensitive resins. The studies indicated that as the hydrochloride content decreases, the surface water contact angle of the UV-cured film increases from 10.8, 22.9 to 51.5°, and water absorption decreases from 26.55, 16.20 to 11.06%, respectively. Moreover, the waterborne photosensitive resins exhibited a high printing accuracy together with a good effect of washing and are promising for 3D printing.

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