3D打印用石膏粉料的研究与应用

Research and Application of Gypsum Powder for 3D Printing

针对3D打印用石膏粉料的要求,选择了合适的石膏基料、黏结剂,促凝剂、分散剂及其他粉末助剂,经过大量试验及生产实际验证,成功研制了一种3D打印用石膏粉料,得出了最佳的改性工艺及工艺配比。实践表明,研制的3D打印用石膏粉料性能优异,环保无毒、粉末流动性好,均匀细腻,铺粉均匀顺畅,没有皱褶;渗透合适,产品表面光洁,尺寸稳定,不易收缩,打印精度好;打印过程,无粉末飞扬,不会堵塞打印头;硬化后强度较好,效果比较理想,很好地解决了目前3D打印石膏粉料的固化慢、流动性差、强度较低等问题。

According to the requirements of gypsum powder for 3D printing,the appropriate base material of gypsum,binder,accelerator,dispersant and other powder additives were selected.After a large number of tests and practical production verification,a kind of gypsum powder for 3D printing was successfully developed,and the best modification process and process ratio were obtained.The practice shows that the developed gypsum powder for 3D printing has excellent performance,environmental protection,non-toxic,good powder fluidity,even and delicate,even and smooth powder spreading,no wrinkles;it has proper penetration,smooth product surface,stable size,not easy to shrink,and good printing accuracy;in the printing process,there is no powder flying,not blocking the printing head;after hardening,the strength is good,the eect is ideal,and the solution is good.Thus,the defects of 3D printing gypsum powder,such as slow curing,poor fluidity and low strength,are solved.