聚羧酸减水剂合成工艺对产品性能影响的研究  

Study on the influence of synthesis process on polycarboxylic acid performance

作　　者：江姜[1,2] 刘金芝[1,2] 周栋梁[1,2] 冉千平[1,2] 刘加平[1,2] 

机构地区：[1]江苏博特新材料有限公司,江苏南京211103 [2]江苏省建筑科学研究院有限公司,江苏南京210003

出　　处：《新型建筑材料》2014年第1期72-75,共4页New Building Materials

摘　　要：采用凝胶渗透色谱(GPC)技术跟踪了以匀速滴加、变速滴加以及一次性加料等3种工艺合成聚羧酸减水剂过程中大单体的转化率情况,进而推算出每个监测点时所有反应生成聚合物的平均组成以及每2个监测点间反应生成聚合物的平均组成,从理论上阐明了匀速滴加工艺在产品性能和原材料利用率方面具有明显的优势,该研究对聚羧酸减水剂的工业化生产具有一定的指导意义。Constant dripping, speed dropping and one-pot three synthesis processes of monomer conversion during the synthe sis process were detected by GPC,and then calculated the average composition of the resulting polymer of each monitoring point and between each of the two monitoring points. Theoretical studies show that constant dripping process had obvious advantages in product performance and utilization of raw materials. The study has a certain guiding significance on the industrial production of polycaboxylic acid.

关 键 词：聚羧酸减水剂 合成工艺 大单体转化率 聚合物平均组成 分散性能 凝胶渗透色谱 

分 类 号：TU528[建筑科学—建筑技术科学]