引言聚羧酸减水剂作为第三代混凝土减水剂,能有效增加混凝土流动性,改善混凝土和易性及增加混凝土强度。通常聚羧酸减水剂的合成温度为55~85℃,在此温度下生产不仅造成能源的浪费,由于升降温的延迟还导致生产时间的增加。随着生产工艺的不断进步,低温(常温)条件制备聚羧酸减水剂成为当前新型的 Introduction Polycarboxylate superplasticizer as the third generation of concrete superplasticizer, can effectively increase the fluidity of concrete, improve the workability of concrete and increase the strength of concrete. The polycarboxylate water reducer is usually synthesized at a temperature of 55-85 ° C. Production at this temperature not only results in a waste of energy, but also leads to an increase in production time due to a delay in heating and cooling. With the continuous improvement of production technology, the preparation of polycarboxylate superplasticizer at low temperature (room temperature) has become the new type