Preparation method of nano organic clay compound for polymer

The invention relates to a preparation method of a nano organic clay compound for a polymer, and belongs to the technical field of modified bentonite. The method comprises the following steps: uniformly mixing calcium bentonite mineral powder and a dispersing agent, adding water, kneading, stacking, drying, and crushing to prepare pretreated mineral powder; then the pretreated mineral powder is purified; then sequentially treating by using a sodium modifying agent and an organic modifying agent; and finally, adjusting the pH value to 5-7 by using acid, mixing at the constant temperature of 20-80 DEG C for 1-2 hours, drying, and grinding to obtain the required nano organic clay compound for the polymer. Through purification and modification of bentonite, the organic clay compound is endowed with higher purity and better temperature resistance, and can be used in the field of polymer composite materials. 本申请涉及一种聚合物用纳米有机粘土复合物的制备方法，属于改性膨润土技术领域。该法首先将钙基膨润土矿粉和分散剂混合均匀，加入水后捏合、堆放、干燥、粉碎，制取预处理矿粉；然后将预处理矿粉提纯；再接着依次用钠化改型剂、有机