中国造纸学报2011，Vol.26Issue(3)：44-48,5.
改性木质素磺酸钙高效减水剂的制备和应用
Preparation of Superplasticizer through Copolymerization of Oxidized Calcium Lignosulfonate with Acrylamide and Its Application
摘要
Abstract
Calcium lignosulfonate was oxidized by H2O2 first. Then the oxidized product was copolymerized with aciylamide using ammonium persulfate as the initiator. A modified calcium lignosulfonate super plasticizer admixture named AMCL was synthesized. Fourier transform infrared spectroscopy was used to indicate the oxidation and grafting process, and the influence of AMCL on the performance of cement paste was investigated. The results showed that AMCL improved the character of retardation and air entrainment of calcium lignosulfonate greatly. The structure of cement hydration products was tighter. When the intermingled quantity of AMCL was 0. 5% based on cement mass, water cement ratio was 0.35, the fluidity of cement paste reached 245 mm. And under condition of normal consistency and 0. 5% intermingled quantity, the water-reducing rate was 15.7%. The compression strength ratios of hardened cement paste in 3 d, 7 d and 28 d were 119.7%, 126.7% and 121.0% , and the flexural strength ratios were 109.5% , 126.7% and 123.4% , respectively.关键词
木质素磺酸钙/氧化/共聚/丙烯酰胺/高效减水剂Key words
calcium lignosulfonate/oxidation/copolymerization/aciylamide/superplasticizer分类
化学化工引用本文复制引用
王万林,王海滨,霍冀川,雷永林,吕淑珍..改性木质素磺酸钙高效减水剂的制备和应用[J].中国造纸学报,2011,26(3):44-48,5.基金项目
四川峨胜水泥股份有限公司峨胜创新基金项目(09zh0200). （09zh0200）
