摘 要：以复合材料界面作用的机理为指导，研制了一种适合于碳酸 钙湿法改性用的改质剂 XH- CS01，并研究了该改质剂在碳酸钙湿法 改性及在聚乙烯增韧改性中的应用效果。研究结果表明，该改质剂可 以以一种乳液的状态方便地分散在水中，并能够跟水相中的碳酸钙 颗粒表面发生化学反应，通过该法制备的活性碳酸钙的流动性好。相 对对比试验表明，改性碳酸钙填充的聚乙烯树脂的力学性能明显高 于干法及其他偶联剂的改性效果，尤其是冲击强度方面，通过 XH CS01 湿法改性获得的碳酸钙，可以使填充量为 30%左右的聚乙烯体 系冲击强度达到基体树脂的 3 倍以上，从而在一定的添加范围内实 现了“增强增韧”的双重效果，避免了昂贵的弹性增韧所带来的模量 和强度下降的缺点。 

关键词：湿法改性；增强增韧；改性碳酸钙；改质剂；聚乙烯

Abstract: Based on the relevant theory of surface and interface modifica tion, a novel modifier XH-CS01 was developed for the wet-processing of calcium carbonate, and the application effect of the modifier in the wet-processing of CaCO₃ and the toughening effect of the modified Ca CO₃ was also studied, which declared that this kind of modifier could be readily dispersed in water in the form of latex, and it could react with the surface of CaCO₃ in the water phase, and the activated CaCO₃ derived from this method had good fluidity. The relevant comparative tests de clare that the polyethylene matrix filled with wet-processed activated Ca CO₃ has better mechanical properties than those from dry-processed and from other coupling agents，especially in the improvement of impact strength, the wet-processed activated CaCO₃ from XH-CS01 can endow the polyethylene filled by 30% activated CaCO₃ with triple value of the matrix, so in some scope，the effect of both strengthening and toughening can be achieved at the same time，which avoids the shortcoming of ex pensive elastomer toughening. 

Keywords: wet-processing；strengthening and toughening；activated Ca CO₃；modifier；polyethylene