直写成型金属微粒悬浮液流变特性及动力粘度研究  

Study on rheological features and dynamic viscosity of metal particle suspension for direct ink writing

作　　者：郭恒锐 郭俊卿[1,2] 陈拂晓 皇涛[1,2] 相楠 GUO Heng-rui;GUO Jun-qing;CHEN Fu-xiao;HUANG Tao;XIANG Nan(School of Materials Science and Technology,Henan University of Science and Technology,Luoyang 471023,China;Provincial and Ministerial Co-construction of Collaborative lnnovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology,Luoyang 471023,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]有色金属新材料与先进加工技术省部共建协同创新中心,河南洛阳471023

出　　处：《塑性工程学报》2025年第1期209-217,共9页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(52275329);河南省学校重点项目(20A460014)。

摘　　要：为制备出符合直写成型技术要求的金属微粒悬浮液,对金属微粒悬浮液的流变特性及动力粘度进行了研究。制备了具有不同动力粘度的金属微粒悬浮液,在室温下进行了动力粘度测试,依据内摩擦力理论对其流变特性及动力粘度进行了研究,分析了微粒体积分数及粒径对其流变特性及动力粘度的影响。结果表明,PVA溶液作为液相的金属微粒悬浮液具有直写成型技术要求的流变特性;调节微粒体积分数及粒径可以调控金属微粒悬浮液的动力粘度;通过Williamson模型及牛顿插值法量化了微粒体积分数与动力粘度之间的关系,提供了预测悬浮液动力粘度的方法。To prepare the metal particle suspension that satisfies the requirement of direct ink writing technology,the rheological features and dynamic viscosity of the metal particle suspension were studied.Metal particle suspensions with different dynamic viscosities were prepared,and dynamic viscosity tests were conducted at room temperature.Based on the internal friction force theory,the rheological features and dynamic viscosity were studied,and the effects of volume fraction and diameter of particles on the rheological features and dynamic viscosity were analyzed.The results show that as the liquid phase metal particle suspension,polyvinyl alcohol(PVA)solution has rheological features required by direct ink writing technology.Adjusting the volume fraction and diameter of particles can regulate the dynamic viscosity of metal particle suspension.The relationship between particle volume fraction and dynamic viscosity was quantified using the Williamson model and Newton interpolation method,providing the method for predicting the dynamic viscosity of suspension.

关 键 词：直写成型 金属微粒悬浮液 内摩擦力 流变特性 Williamson模型 

分 类 号：TG491[金属学及工艺—焊接] TQ325.9[化学工程—合成树脂塑料工业]