熔融石英陶瓷浆料流变性能与光固化成型精度研究  

Rheological Properties and UV Curing Precision of Fused Silica Ceramic Slurry

作　　者：侯雨轩 李燕 卢秉恒[2,4] 侯瑞凯 李燕霞 宋索成 HOU Yuxuan;LI Yan;LU Bingheng;HOU Ruikai;LI Yanxia;SONG Suocheng(School of Materials Science and Engineering,Xi'an Shiyou University,Xi'an 710065,Shaanxi,China;School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,Shaanxi,China;Materials Innovation Design Center,School of Materials,Xi'an Jiaotong University,Xi'an 710049,Shaanxi,China;National Additive Manufacturing Innovation Center,Xi'an 710117,Shaanxi,China;Beijing Remote Sensing Equipment Research Institute,Beijing 100854,China)

机构地区：[1]西安石油大学材料科学与工程学院,陕西西安710065 [2]西安交通大学机械学院,陕西西安710049 [3]西安交通大学材料学院材料创新设计中心,陕西西安710049 [4]国家增材制造创新中心,陕西西安710117 [5]北京遥感设备研究所,北京100854

出　　处：《陶瓷学报》2024年第2期374-381,共8页Journal of Ceramics

基　　金：国家自然科学基金(52005394);持久性有毒污染物环境与健康危害湖北省重点实验室开放基金资助项目(PTS2021-04)。

摘　　要：由于熔融石英的高透光性,陶瓷浆料光固化成型过程中存在严重的过固化现象。为了消除这种过固化现象,并提高成型精度与性能,需要制备出高吸光度、低黏度的熔融石英陶瓷浆料。通过对熔融石英粉末的改性以及分散剂BYK-9076的含量调控改善浆料黏度,并且添加了高强度、高紫外光吸收率以及能够抑制熔融石英高温结晶的B_(4)C颗粒,实现了熔融石英陶瓷浆料的综合优化。结果表明,添加4 wt.%分散剂的浆料黏度比未加分散剂的浆料降低了93%,并用其制备出了固含量57 vol.%的低黏度熔融石英陶瓷浆料。当B_(4)C含量为2.5 wt.%、曝光时间为5 s时,固化深度从1325μm降低至230μm,并且此时固化片在X、Y方向上拥有最优的精度,均为0.01 mm。Due to the high light transmittance of fused silica,there is a serious over curing phenomenon in the process of light curing of ceramic slurry.In order to eliminate this over curing and improve the molding accuracy and performance,it is necessary to prepare fused silica ceramic slurry with high absorbance and low viscosity.The viscosity of slurry is improved by modifying fused silica powder and adjusting the content of dispersant BYK-9076.Meanwhile,B_(4)C particles with high strength,high UV light absorption and ability to inhibit the high-temperature crystallization of fused silica are added to realize the comprehensive optimization of fused silica ceramic slurry.It is indicated that,with 4 wt.%dispersant,viscosity of the slurry was reduced by 93%,leading to low viscosity fused silica ceramic slurry with a solid content of 57 vol.%.When the B_(4)C content is 2.5 wt.%and the exposure time is 5 s,the curing depth increases from 1325μm to 230μm.In this case,the cured film has the optimal accuracy in the X and Y directions,both of which are 0.01 mm.

关 键 词：熔融石英 光固化成型 过固化 流变特性 B4C 

分 类 号：TQ174.75[化学工程—陶瓷工业]