A method of modifying calcium carbonate particles was investigated by coating sodium stearate or sodium oleate on the surface of calcium carbonate by wet method. The results of FTIR, activation and dispersion index, dispersity in kerosene, surface wettability tests and zeta potential tests show that sodium stearate or sodium oleate has successfully coated on the surfaces of calcium carbonate. The main factors were researched and the optimal parameters were obtained for the best modification effect. Compared with common rubber, the modified calcium carbonate added rubber has larger breaking tensile strength (more than 21%) and larger elongation at break (more than 16%). This research provides a feasible way of modifying calcium carbonate for its use as filler in organic matrix, reduces the cost and has a potential application in large-scale production of modified calcium carbonate.

中文翻译：

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硬脂酸钠（或油酸钠）湿法制备有机改性碳酸钙及其表征

研究了一种通过湿法在碳酸钙表面包覆硬脂酸钠或油酸钠对碳酸钙颗粒进行改性的方法。FTIR、活化分散指数、煤油分散性、表面润湿性试验和zeta电位试验结果表明，硬脂酸钠或油酸钠已成功包覆在碳酸钙表面。对主要影响因素进行了研究，得出了最佳改性效果的最佳参数。与普通橡胶相比，改性碳酸钙添加橡胶具有较大的断裂拉伸强度（21%以上）和较大的断裂伸长率（16%以上）。本研究为碳酸钙作为有机基质填料的改性提供了一条可行的途径，