针对以液体含能材料为原料的3D打印,设计出适合含能材料挤丝工艺的直径不同的喷头,并构建了双向可调气路系统用以控制液体的挤出流量,实现了用不同直径的喷头均匀、稳定打印,保证了含能材料打印的安全性。采用丝状液体含能材料固化方法,实现了液体3D打印固化成型。制备出适合打印性能要求的光固化树脂,利用红外光谱分析技术,计算出各配方中紫外光照后CC双键转化率,验证最优配方的正确性。进行光固化树脂和加入含能材料的含能油墨打印实验,并对含能油墨打印的模型进行点燃实验。结果表明,设计的打印喷头和气路系统适合于液体材料打印,制备的光固化树脂流动性、流平性、固化效率等符合打印性能要求。

For the liquid printing for energetic materials in 3D printing,the extrusion process nozzle with different diameter for suiting the printing of energetic materials was designed,set up bidirectional and adjustable pneumatic system,controlled the extrusion flow of liquid,realized the uniform and stable printing of different diameter nozzle and ensured the safety of energetic materials printing.The silk liquid of energetic materials was processed using the curing method,accomplished 3D printing and solidification of liquid.The suitable resin for printing was prepared,used infrared spectroscopy analysis technology to calculate the conversion rate of CC double bond after UV curing,verified the correctness of optimal formula.The printing experiments by photosensitive resin and ink included energetic materials were conducted,then lighted the printing model used energetic ink.The results showed that the printed nozzle and pneumatic system were suitable for the printing of liquid materials.The liquidity,levelling property and curing efficiency of photosensitive resin prepared was suitable for printing performance requirements.