With the increase of reaction time of coupling agent and silica, the particle size of organic surface modified silica in water becomes larger, and the weight loss of silica co-coagulate with rubber latex decreases. 随着偶联剂反应时间的延长,有机化白炭黑在水相中的颗粒尺寸变大,白炭黑在复合过程中的损失减小。