线状聚羧酸减水剂在陶瓷坯料颗粒表面的吸附行为  

Adsorption Behavior of Linear Polycarboxylate Superplasticizer on the Particle Surfaces of Ceramic Body

作　　者：陈宝璠[1,2] 

机构地区：[1]黎明职业大学土木建筑工程学院,福建泉州362000 [2]实用化工材料福建省高等学校应用技术工程中心,福建泉州362000

出　　处：《精细化工》2014年第7期916-922,共7页Fine Chemicals

基　　金：福建省教育计划项目(JA11329;JA12412);泉州技术研究与开发重点资助项目(2010G7;2013Z47;2013Z158)~~

摘　　要：采用静态吸附实验,研究了陶瓷坯料吸附两种自制聚羧酸高效减水剂的动力学规律,用准二级动力学模型对其吸附过程进行拟合,并通过测定添加了两种自制不同分子结构聚羧酸高效减水剂的陶瓷坯体料浆黏度以评价其分散性能,结果显示,在陶瓷坯体料浆中,线状MA/AA/AMPS聚羧酸高效减水剂的平衡吸附量是梳状AMPS改性聚丙烯酸高效减水剂的2倍以上,陶瓷坯料颗粒表面对两种聚羧酸高效减水剂的吸附均符合准二级反应动力学模型;线状MA/AA/AMPS聚羧酸高效减水剂的分散效能明显好于梳状AMPS改性聚丙烯酸高效减水剂。Through an experiment of static adsorption, the adsorption kinetics of the adsorption of two self-made polycarboxylate superplasticizer onto ceramic blank was studied. The test data was further analyzed with pseudo-second order kinetics. The ceramic body slurry＇s viscosity was determined to characterize the dispersion property of ceramic body slurry with two self-made polycarboxylate superplasticizer of different molecular structures. The results show that the saturation amount of polyearboxylate superplastieizer of linear MA/AA/AMPS adsorbed onto ceramic blank was more than 2 times that of comb AMPS-modified polyacrylie acid superplasticizer. The pseudo-second order kinetic equation was found to be in best-fit with the test data as judged by the correlation coefficients. The dispersion property of polycarboxylate superplasticizer of linear MA/AA/AMPS was much better than that of comb AMPS-modified polyacrylic acid superplasticizer in the ceramic body slurry.

关 键 词：线状聚羧酸高效减水剂 陶瓷坯料 吸附 建筑用化学品 

分 类 号：TQ174.47[化学工程—陶瓷工业]