DLP型3D打印用巯烯光敏树脂的制备与性能研究

doi:10.7517/issn.1674-0475.180407

影像科学与光化学 ›› 2018, Vol. 36 ›› Issue (5): 434-442.DOI: 10.7517/issn.1674-0475.180407

DLP型3D打印用巯烯光敏树脂的制备与性能研究

王冲^1,2, 刘玉龙², 刘仁^1,2, 李治全^1,2

1. 江南大学光响应功能分子材料国际联合研究中心, 江苏无锡 214122;
2. 江南大学化学与材料工程学院, 江苏无锡 214122

收稿日期:2018-04-12 修回日期:2018-06-19 出版日期:2018-09-15 发布日期:2018-09-15
通讯作者: 李治全

Study on the Preparation and Properties of Thiol-ene Photosensitive Resins for DLP 3D Printing

WANG Chong^1,2, LIU Yulong², LIU Ren^1,2, LI Zhiquan^1,2

1. International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China;
2. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China

Received:2018-04-12 Revised:2018-06-19 Online:2018-09-15 Published:2018-09-15

摘要/Abstract

摘要： 基于DLP（Digital light processing）的3D打印技术因具有成型速度快、分辨率高、可打印复杂形状等优点而备受关注，开发可用于DLP型3D打印且性能优异的光敏树脂已成为研究热点。巯烯光聚合遵循自由基逐步聚合机理，相对于传统的丙烯酸酯链式聚合，巯烯聚合反应速度快、聚合网络均一、固化收缩率低。本文制备了一系列可用于DLP型3D打印的巯烯光敏树脂，探究了巯基单体含量对光敏树脂光聚合动力学、热机械性能、拉伸性能、固化收缩率和打印精度的影响。结果表明，巯基单体的加入会显著提高体系双键转化率，增加聚合网络均一性和断裂伸长率，降低固化收缩率。

关键词: 3D打印, DLP, 光敏树脂, 巯烯聚合

Abstract: 3D printing based on digital light processing (DLP) affords rapid fabrication speeds, high dimensional accuracy and enables fabrication of objects with complex geometries. Therefore, developing photosensitive resins suitable for DLP 3D printing has become essential. Compared to traditional chain growth photopolymerization based on acrylates, thiol-ene photopolymerization features rapid reaction rates, high conversions, more homogeneous networks and low volume shrinkage due to its unique step growth polymerization mechanism. In this paper, a series of thiol-ene photosensitive resin were prepared and successfully applied to DLP printing to fabricate 3D objects. We explored the influence of the content of thiol monomers on the polymerization kinetics, thermomechanical properties, tensile properties, volume shrinkage and printing accuracy. The results showed that the increased amount of thiol monomers led to significantly increased double bond conversion, improved homogeneity of polymerization network, increased elongation at break and reduced volume shrinkage after printing.

Key words: 3D printing, digital light processing, photosensitive resin, thiol-ene reaction

王冲, 刘玉龙, 刘仁, 李治全. DLP型3D打印用巯烯光敏树脂的制备与性能研究[J]. 影像科学与光化学, 2018, 36(5): 434-442.

WANG Chong, LIU Yulong, LIU Ren, LI Zhiquan. Study on the Preparation and Properties of Thiol-ene Photosensitive Resins for DLP 3D Printing[J]. Imaging Science and Photochemistry, 2018, 36(5): 434-442.

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DLP型3D打印用巯烯光敏树脂的制备与性能研究

Study on the Preparation and Properties of Thiol-ene Photosensitive Resins for DLP 3D Printing

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