| 改性木质素磺酸钙高效减水剂的制备和应用 |
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| 引用本文： | 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. |
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| 作者姓名： | 王万林 王海滨 霍冀川 雷永林 吕淑珍 |
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| 作者单位： | 1. 西南科技大学四川省非金属复合与功能材料重点实验室,四川绵阳,621010
2. 绵阳师范学院材料科学与工程学院,四川绵阳,621000 |
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| 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) |
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| 摘 要： | 用H2O2先对木质素磺酸钙进行氧化,然后将木质素碳酸钙氧化产物在过硫酸铵引发下与丙烯酰胺共聚,合成了一种改性木质素磺酸钙高效减水剂(AMCL).通过红外光谱表征了氧化和共聚反应,并对AMCL进行了水泥净浆性能测试.结果表明,AMCL的分散性、缓凝性和引气性较木质素磺酸钙有明显改善,水化产物结构更加密实；在AMCL掺量为水泥质量的0.5％、水灰比为0.35时,水泥净浆流动度达245 mm；标准稠度下,AMCL掺量为0.5％时,水泥净浆减水率达到15.7％,3d、7d和28 d硬化水泥浆体的抗压强度比分别为119.7％、126.7％和121.0％,抗折强度比分别为109.5％、126.7％和123.4％.
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| 关 键 词： | 木质素磺酸钙 氧化 共聚 丙烯酰胺 高效减水剂 |
Preparation of Superplasticizer through Copolymerization of Oxidized Calcium Lignosulfonate with Acrylamide and Its Application |
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| WANG Wan-lin,WANG Hai-bin,HUO Ji-chuan,LEI Yong-lin,LV Shu-zhen.Preparation of Superplasticizer through Copolymerization of Oxidized Calcium Lignosulfonate with Acrylamide and Its Application[J].Transactions of China Pulp and Paper,2011,26(3):44-48. |
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| Authors: | WANG Wan-lin WANG Hai-bin HUO Ji-chuan LEI Yong-lin LV Shu-zhen |
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| Affiliation: | WANG Wan-lin1 WANG Hai-bin2,HUO Ji-chuan1 LEI Yong-lin1 LV Shu-zhen1(1.Key Lab for Nonmetal Composite and Functional Materials of Sichuan Province,Southwest University of Science and Technology,Mianyang,Sichuan Province,621010,2.School of Materials Science and Technology,Mianyang Normal University,621000) |
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| Abstract: | Calcium lignosulfonate was oxidized by H2O2 first.Then the oxidized product was copolymerized with acrylamide 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 calciu... |
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| Keywords: | calcium lignosulfonate oxidation copolymerization acrylamide superplasticizer |
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