一种重气体保护直接发泡法制备多孔陶瓷的方法及装置

Method and device for preparing porous ceramic by heavy gas-protective direct-foaming technology

Abstract

本发明属于无机非金属材料领域,涉及一种重气体保护直接发泡法制备多孔陶瓷的方法及装置。工艺过程包括:悬浮料浆的配置过程,真空除气泡过程,重气体去除环境空气过程,重气体保护搅拌发泡过程,浇注过程,脱模、干燥过程,烧结过程。工艺特点为:采用重气体(氩气或二氧化碳气体)保护搅拌发泡制备泡沫陶瓷,并设计了水基陶瓷料浆发泡专用装置。本发明采用重气体向上排空气法搅拌发泡法制备泡沫陶瓷,装备简单、操作方便;泡沫陶瓷料浆发生自由基聚合反应凝胶固化,凝胶速度快,坯体孔径分布均匀,适合制备孔径介于50~300μm范围内的多孔陶瓷材料。
The invention belongs to the field of inorganic non-metallic materials and relates to a method and device for preparing porous ceramic by a heavy gas-protective direct-foaming technology. The method comprises preparing suspension slurry, carrying out vacuum bubble-removal, removing environment air by heavy gas, carrying out heavy gas-protective stirring foaming, carrying out pouring, carrying out demolding, carrying out drying and carrying out sintering. The foamed ceramic is prepared by heavy gas (such as argon or carbon dioxide)-protective stirring foaming and the water-based ceramic slurry foaming special-purpose device is designed. The method for preparing the foamed ceramic adopts a stirring foaming method adopting heavy gas to extrude air upward, utilizes simple equipment and is convenient for operation. The foamed ceramic slurry undergoes a free radical polymerization reaction for gelation curing, has a fast gelation rate, has uniform blank aperture distribution and is suitable for preparation of a porous ceramic material with apertures of 50-300 microns.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-105036788-ANovember 11, 2015中国科学院重庆绿色智能技术研究院泡沫陶瓷的制备方法
    CN-105036788-BJune 23, 2017中国科学院重庆绿色智能技术研究院泡沫陶瓷的制备方法