【作者】 黄蓓青； 吕月秋； 王卉； 魏先福；

【Author】 Bei-Qing Huang;Yue-Qiu Lü;Hui Wang;Xian-Fu Wei;

【机构】 北京印刷学院印刷与包装工程学院；

【摘要】 为制备性能良好的彩色3D打印材料,基于3DP技术,针对品红色3D打印材料,利用研制出的品红色浆,通过采用不同种类和含量的预聚物、单体、光引发剂配制成品红色3D打印光固化材料,研究它们对材料固化速度、表面张力、体积收缩率以及粘度等性能的影响,并利用混合配方设计实验确定品红色3D打印光固化材料的配方,最后研究色浆的含量对材料颜色和固化速度的影响。研究结果表明,预聚物、单体的种类对光固化材料的粘度、固化速度以及体积收缩率有较大影响,自由基光固化体系的成型有体积收缩,阳离子体系的成型会有体积膨胀,因此采用自由基-阳离子混杂光固化体系能使材料的体积收缩率达到最小,材料的成型性能较好。光引发剂的种类和含量对光固化材料的固化性能影响较大,适量的光引发剂可以使材料固化速度达到最大;色浆含量为15～20%时的色密度和固化速度能达到对彩色3D打印光固化材料的要求。更多还原

【Abstract】 In order to prepare color 3D printing materials with good performance,a kind of magenta UV-curing material for 3DP method was prepared by using magenta paste and different kinds and contents of prepolymer,monomer and photoinitiator,while effects of each components in the formulation on curing speed,surface tension,volume shrinkage and viscosity were studied.Composition of the magenta 3DP material was determined by formulation experiments.Finally,the effect of the content of color paste on color and curing speed of the 3DP material was studied.The results show that species of prepolymer and monomers have great influence on viscosity,curing speed and volume shirinkage of the 3DP material.As volume shrinkage and expansion happened in free radical and cationic UV-curing systems,respectively,a free-radical-cationic hybrid UV-curing system can achieve the optimal prototyping performance due to the minimizing of volume shrinkage.The species and contents of photoinitiators have significant influences on the curing performance and an appropriate amount of photoinitiators can maximize the curing speed of the 3DP material.A content of color paste in the range of 15-20% can match the requirements of color density and curing speed for the color 3D printing UV-curing materials.更多还原