河北科技大学学报2012，Vol.33Issue(1)：14-19,6.
聚羧酸系高效减水剂聚合反应动力学及其减水性能
Polymerization kinetics of polycarboxylate superplasticizer and its application properties
王少鹏 1张立锁 1王德松1
作者信息
- 1. 河北科技大学化学与制药工程学院,河北石家庄 050018
- 折叠
摘要
Abstract
On the basis of the principle of molecular design, polycarboxylate superplasticizer was prepared by means of free radical polymerization with MPEGAA, AA and MAD as major monomers. The effects of total monomer concentration, initiator and reaction time on polymerization rate of the polycarboxylate superplasticizer were investigated, and the polymerization kinetic relation was obtained as r∝ C10.59 03 Cm0.8089e-5 465/T. The reducing performance of the superplasticizer was determined by means of measuring the fluidity of the cement paste, and the optimum reaction conditions were obtained, e. g.: the molar ratio of n(MPEGAA) : n(AA) : n(MAD) is 1 : 1. 50 ! 0. 36, the amount of initiator is 2. 5 wt% of monomer, the reaction temperature is 60 ℃ , and the reaction time is 6 h.关键词
聚羧酸系高效减水剂/聚合速率/动力学/水泥净浆/流动度Key words
polycarboxylate superplasticizer/ polymerization rate/ kinetics/ cement paste/ fluidity分类
化学化工引用本文复制引用
王少鹏,张立锁,王德松..聚羧酸系高效减水剂聚合反应动力学及其减水性能[J].河北科技大学学报,2012,33(1):14-19,6.
