According to the present disclosure, a method of forming an exfoliated or intercalated filler material is provided, wherein the said method comprises the steps of mixing particles of filler material such as montmorillonite (MMT), mica, layered double hydroxide (LDH), and attapulgite (AT) dispersed in an aqueous medium with cationic acrylate monomers to form modified particles comprising positively charged ions, dispersing the modified particles in organic medium to form a dispersion, contacting said dispersion with an organo-silicate such as tetraethyl orthosilicate (TEOS) and a functionalizing agent comprising an organo-silane such as aminopropyltrimethoxysilane (APTMS), in the presence of a basic catalyst to form a layer of silica on the modified particles. The present disclosure also relates to an exfoliated or intercalated filler material obtained by the said method as well as a method of forming a resin/clay nanocomposite.
根据本公开,提供了一种形成剥落或插层填料材料的方法,其中所述方法包括以下步骤:将分散在
水介质中的填料材料颗粒,如
蒙脱土(MMT)、
云母、层状双氢氧化物(LDH)和阿塔波来石(AT)与阳离子
丙烯酸酯单体混合,以形成包含带正电离子的改性颗粒、将改性颗粒分散在有机介质中以形成分散液,在碱性催化剂存在下,将所述分散液与有机
硅酸盐(如
正硅酸四乙酯(TEOS))和由有机
硅烷(如
氨基丙基
三甲氧基硅烷(A
PTMS))组成的官能化剂接触,以在改性颗粒上形成
二氧化硅层。本公开还涉及通过上述方法获得的剥离或插层填料材料,以及形成
树脂/粘土纳米复合材料的方法。