锂皂石改性泥料在龙泉青瓷3D打印中的应用研究

Study on Application of Synthetic Hectorite Modified Clay in 3D Printing of Longquan Celadon

摘要:

本文以龙泉青瓷胎体材料为基础,通过引入人工合成锂皂石对其进行改性,研究对比了不同锂皂石添加量对龙泉青瓷胎体材料中泥料流变特性、烧成后微结构和力学性能的影响,并使用直写成型技术对改性后的泥料进行3D打印悬垂表现标准模型测试。结果表明：锂皂石的加入可以明显提高泥料的可塑性,有效减少因泥料可塑性不足而产生的变形、开裂等问题。烧制后胎体的抗弯强度经历了先上升后下降的过程,吸水率则对应有先下降后上升的过程,当锂皂石添加量为1.5-2%时,样品抗弯强度最优,并成功打印出完整的悬垂表现标准模型。

Abstract:

In this thesis, the synthetic hectorite was introduced to improve the material of Lonquan celadon. The effects of different amounts of hectorite on important characteristics of Longquan celadon were compared. And such important characteristics include rheological properties of clay, microstructure and mechanical properties after sintering. Besides, the 3D printing standard model test of the modified clay was carried out by using mould-free forming technology, so as to test its pendulous performance. The results showed that the addition of hectorite can obviously improve the clay plasticity and effectively reduce deformation and cracking caused by poor plasticity. The flexural strength of the casing went up first and then down, while the water absorption rate went down first and then up. When the addition amount of hectorite was 1.5-2%, the flexural strength of the sample was the best. At this point, the perfect pendulous standard model could be successfully printed.