偏高岭土制备泡沫材料的初步研究  

A primary study on fabrication of foam materials with metakaolin

作　　者：唐洁[1,2] 崔学民[1] 刘海锋[1] 苏锋[1] 韩要丛[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]桂林师范高等专科学校化工系,广西桂林541001

出　　处：《广西大学学报（自然科学版）》2008年第3期301-304,共4页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金项目(50602006);广西高校优秀人才计划项目(RC2007003)

摘　　要：重点研究了硫酸对偏高岭土中的铝的浸出规律;研究发现,通过控制硫酸浓度和酸浸时间,可以获得不同Si/Al比的铝硅酸盐粉体.实验结果表明,当铝硅酸盐粉体中Si/Al比大于10时,可以通过发泡工艺,使其在150℃左右制成具有一定强度的泡沫材料,有望在吸附、保温和隔音材料领域获得应用.The aluminosilicate with different ratio of silicon and aluminium was prepared by metakaolin using sulfuric acid to leach the aluminum element. The research result showed the concentration of sulfate and treatment time are closely related to the leaching rate of aluminium. The aluminosilicate powders with different ratio of silicon and aluminium can be obtained by controlling the concentration of sulfate and treatment time. The results showed the aluminosilicate powders with Si/Al= 10 can be frothed in about 150℃ under the suitable processing conditions ,and the foam materials with higher strength would be applied in the domain of absorption,heat preservation and sound insulation.

关 键 词：偏高岭土 铝浸出 硫酸 泡沫材料 

分 类 号：TQ174.41[化学工程—陶瓷工业]