硅酸盐通报2024，Vol.43Issue(5)：1748-1755,8.
凹凸棒土对石膏3D打印材料基本性能和可打印性能的影响
Influence of Attapulgite Clay on Basic Properties and Printability of Gypsum 3D Printing Materials
摘要
Abstract
Thickener is a crucial component in 3D printing materials.However,commonly used thickeners are predominantly organic matter,leading to a reduction in the mechanical performance of gypsum.In order to solve this issue,attapulgite clay and hydroxypropyl methylcellulose ether were compared to test their effects on the workability performance,mechanical performance,and printability of gypsum 3D printing materials.The results show that,attapulgite clay reduces the fluidity of gypsum 3D printing materials and increases dynamic yield stress,similar to hydroxypropyl methyl cellulose ether.The flexural and compressive strength of the material decreases first and then increases as the attapulgite clay content increases,while the flexural and compressive strength of the hydroxypropyl methylcellulose ether group shows a declining trend.In the actual 3D printing process,the volume stability and open time results of attapulgite clay groups are similar to those of the hydroxypropyl methylcellulose ether groups,but the actual printing strength is more than 23％higher than that of the hydroxypropyl methylcellulose ether groups.Hydroxypropyl methylcellulose ether achieves viscosity enhancement by water absorption and molecular entanglement,whereas attapulgite clay,with its abundant pore structure,thickens the slurry by adsorbing water molecules and gypsum particles through hydrogen bonding and Van der Waals forces.关键词
高强石膏/3D打印/无机增稠剂/凹凸棒土/工作性能/可打印性Key words
high-strength gypsum/3D printing/inorganic thickener/attapulgite clay/workability performance/printability分类
化学化工引用本文复制引用
汪才峰,蹇守卫,李宝栋,黄健翔,高欣,马逍遥,薛文浩..凹凸棒土对石膏3D打印材料基本性能和可打印性能的影响[J].硅酸盐通报,2024,43(5):1748-1755,8.基金项目
湖北省重点研发计划(2021BCA153) （2021BCA153）
