Synthesis and properties of a low-viscosity UV-curable oligomer for three-dimensional printing
Synthesis and properties of a low-viscosity UV-curable oligomer for three-dimensional printing
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DOI：
10.1007/s00289-015-1507-0
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发表时间：
2016-02-01
期刊：
影响因子：
3.2
通讯作者：
Wang, Xiang
中科院分区：
文献类型：
--
作者：
Li, Juan;Cui, Yihua;Wang, Xiang
以聚乙二醇二缩水甘油醚（PEGGE）和丙烯酸（AA）为原料，合成了一种新型光敏低粘度环氧丙烯酸酯树脂。采用傅里叶变换红外光谱（FTIR）对聚乙二醇二缩水甘油醚二丙烯酸酯（PEGEA）的结构进行了表征。2-以异丙基噻吨酮（ITX）、4-二甲氨基苯甲酸乙酯（EDAB）和2-苄基-2-二甲氨基-1-[4-（4-吗啉基）苯基]-1-丁酮（369）为光引发剂，三羟甲基丙烷三丙烯酸酯（TMPTA）为单体，与聚乙二醇单甲醚（PEGGEA）共混，制备了一种紫外光固化树脂。采用衰减全反射（ATR）光谱和热重分析（TGA）研究了不同齐聚物含量的树脂的紫外光固化性能和热稳定性。研究了低聚物的粘度和固化树脂的力学性能。结果表明，齐聚物的含量对光固化树脂的光固化性能和热稳定性有一定的影响。所制备的紫外光固化树脂在25 ℃下的粘度小于200 mPa·s，固化后的硬度大于6 H，能够满足三维打印（3DP）的要求。
A novel photosensitive low-viscosity epoxy acrylate resin was synthesized by utilizing polyethylene glycol diglycidyl ether (PEGGE) and acrylic acid (AA) as starting materials. The structure of polyethylene glycol diglycidyl ether diacrylate (PEGGEA) was characterized by Fourier transform infrared spectroscopy (FTIR). 2-Isopropyl thioxanthone (ITX), ethyl 4-(dimethylamino) benzoate (EDAB) and 2-benzyl-2-(dimethylamino)-1-[4-(4-morpholinyl) phenyl]-1-butanone (369) as photoinitiators and trihydroxymethyl propane triacrylate (TMPTA) as monomer were mixed with PEGGEA to prepare a kind of UV-curable resins, which may be utilized to boost the resin curing under UV light. The UV-curing properties and the thermal stability of the prepared resins with different contents of oligomer were investigated using FTIR-attenuated total reflection (ATR) spectroscopy and TGA. The viscosity of the oligomers and the mechanical properties of the cured resins were also studied. The results showed that the content of oligomer will affect the UV-curing properties and the thermal stability of the UV-curing resins. The viscosity of the prepared UV-curing resins was less than 200 mPa s at 25 degrees C, and the hardness of cured resins was high than 6H, which could meet the requirements for three-dimensional printing (3DP).