Method for preparing spherical silica aerogel granule, and spherical silica aerogel granule prepared thereby

• Main Authors: LEE JE KYUN, LEE KYOUNG JIN, KIM YE HON, HWANG HAE JIN
• Format: Patent
• Language: Chinese; English
• Published: 17.04.2018
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The present invention relates to a method for preparing a spherical silica aerogel granule, and a spherical silica aerogel granule prepared thereby. The present invention can provide: a method for preparing a spherical silica aerogel granule, which is suitable for mass production since droplets of a water glass solution are uniformly dispersed, by using a surfactant in a specific step, in a uniform size in a nonaqueous solvent so as to reduce processing time, thereby increasing productivity; and a spherical silica aerogel granule having a uniform size, and excellent workability and flowabilitycan be provided by the preparation method. 本发明涉及种球形二氧化硅气凝胶颗粒的制备方法和由此制备的球形二氧化硅气凝胶颗粒。可以提供球形二氧化硅气凝胶颗粒的制备方法，因为在特定步骤中使用表面活性剂使得水玻璃溶液的液滴以均匀的尺寸均匀地分散在非水溶剂中，从而缩短处理时间并且提高生产率，因此该制备方法适合于大规模生产。可以提供通过所述制备方法制备的具有均匀尺寸的球形二氧化硅气凝胶颗粒，其中，所述球形二氧化硅气凝胶颗粒具有较高的加工性能和优异的流动性。