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利用十六烷基三甲基溴化铵、甲基硅油、磷酸蜜铵盐等有机改性剂对蒙脱土进行插层改性。采用正交试验设计,通过改变等3种有机试剂反应温度、改性时间以及改性搅拌过程中的转速3个因素,得到27组样品。利用FT-IR、XDR及SEM等对样品进行表征,结果表明:有机插层剂对蒙脱土插层效果较好,磷酸蜜胺盐添加剂量2.5g,搅拌转速900r/min,改性时间3h,制得的磷酸蜜胺盐-蒙脱土表面光滑,平坦舒展,粒子呈现规则的排列状态,取得了较好的改性效果,层间距达到6.570nm,在3种改性剂中改性效果最好,层间距最大。
The montmorillonite was intercalated and modified by organic modifier such as cetyltrimethylammonium bromide, methyl silicone oil and meliium phosphate. Using orthogonal experimental design, 27 samples were obtained by changing three factors such as the reaction temperature, the modification time and the rotational speed during the modification of the three kinds of organic reagents. The samples were characterized by FT-IR, XDR and SEM. The results showed that the intercalation effect of organic intercalation agent on montmorillonite was better, the dosage of melamine phosphate was 2.5g, the stirring speed was 900r / min, the modification time was 3h , The prepared melamine phosphate montmorillonite surface smooth, flat stretch, the particles showed a regular arrangement state, and achieved better modification effect, the layer spacing reached 6.570nm, modified in the three modifiers Best, the largest layer spacing.