Droplet Micro-Reactor for Internal Gelation to Fabricate ZrO₂ Ceramic Microspheres

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• 作者：Peiyi Wang ; Jiang Li ; Janine Nunes ; Shaochang Hao ; Bing Liu and Haosheng Chen
• 刊名：Journal of the American Ceramic Society
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：100
• 期：1
• 页码：41-48
• 全文大小：3554K
• ISSN：1551-2916

文摘

A droplet micro-reactor was developed to realize the internal sol–gel reaction of ZrO₂ inside the droplet. The reactants are only allowed to combine when the droplet forms, meanwhile, they are able to mix well and react to form gel particles with a proper designed structure of the micro-reactor. In this condition, the mixing efficiency was determined by the structure of the micro-reactor and the flow rate ratio of the two components. After sintering, ZrO₂ ceramic microspheres are acquired with high sphericity and narrow size distribution. This droplet micro-reactor overcomes the gelation of the premixed sol and reactant in the channel, and it has been demonstrated to be more stable with a longer running time.