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    • 9. 发明授权
    • Exfoliative clay and derivative thereof and method for producing the same
    • 剥离性粘土及其衍生物及其制造方法
    • US07022299B2
    • 2006-04-04
    • US10270209
    • 2002-10-15
    • Jiang-Jen LinChin-Cheng ChouTzong-Yuan Juang
    • Jiang-Jen LinChin-Cheng ChouTzong-Yuan Juang
    • C01B33/12
    • C01B33/44
    • The present invention discloses an exfoliative clay and a derivative thereof and a method for producing the same. The exfoliative clay is formed by emulsion exfoliating an inorganic layered silicate clay with an amphibious intercalating agent by powerfully stirring at 60–180° C. and not less than 14.7 psig. The amphibious intercalating agent is obtained by copolymerizing polyoxyalkylene amine having molecular weight over 1,800 and polypropylene-grafting-maleic anhydride (PP-g-MA). Before emulsion exfoliation, the intercalating agent is acidified with an inorganic acid. The acidification is the key step for obtaining nanoscale of emulsifying particles less than 100 nm for the exfoliation. The exfoliative clay can be further extracted with a hydroxide or a chloride of alkali metal or alkaline-earth metal to obtain a derivative in the form of nanosilica plates which is free of organic portions.
    • 本发明公开了一种剥离性粘土及其衍生物及其制造方法。 通过在60-180℃和不低于14.7psig的强力搅拌下将无机层状硅酸盐粘土与两栖嵌入剂乳化成剥离形成剥离性粘土。 通过共聚分子量超过1800的聚氧亚烷基胺和聚丙烯接枝 - 马来酸酐(PP-g-MA)获得两栖嵌入剂。 在乳液脱落之前,插入剂用无机酸酸化。 酸化是获得纳米级乳化颗粒小于100nm的剥落的关键步骤。 剥离性粘土可以用碱金属或碱土金属的氢氧化物或氯化物进一步提取,得到无机部分的纳米二氧化硅板形式的衍生物。