| 木质素磺酸钠减水剂改性实验研究 |
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| 引用本文： | 麻秀星.木质素磺酸钠减水剂改性实验研究[J].福建建筑,2010(1):123-124,134. |
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| 作者姓名： | 麻秀星 |
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| 作者单位： | 重庆大学材料学院;厦门市建筑科学研究院集团股份有限公司; |
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| 摘 要： | 木质素磺酸钠是一种常见的减水剂,通过对其进行化学改性,可以提高减水率,同时改善木质素磺酸钠在混凝土应用过程中强度偏低的缺点。本文通过改变氧化剂的用量、还原剂的用量、氧化温度、氧化时间和pH值,考察反应条件的改变对其减水率的影响,并通过红外光谱对改性后产品进行分子结构分析。分析表明,改性后木质素磺酸钠分子结构中空间位阻小的基团含量减少,空间位阻大的基团含量增加,有效减少了水泥颗粒团聚现象的发生,减水率和抗压强度比明显提高。
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| 关 键 词： | 木质素磺酸钠 氧化 改性 |
The Modified Research of the Sodium Lignosulfonate Water-reducer |
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| Ma Xiuxing.The Modified Research of the Sodium Lignosulfonate Water-reducer[J].Fujian Architecture & Construction,2010(1):123-124,134. |
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| Authors: | Ma Xiuxing |
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| Affiliation: | 1;2;1.The Materials College;Chongqing University 400030;2.Xiamen Academy of Building Research Group 361004 |
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| Abstract: | The sodium lignosulfonate is a common kind of water-reducer.It can be elevated water-reducing rate and improved the lower strength in concrete application process after chemical modification.This paper by changing the amount of oxidant,the amount of reductant,oxidation temperature,oxidation time and pH values,examined the impact of its water-reducing ratio after the reaction conditions changes and analysed the molecular structure of the modified product by infrared spectroscopy.Analysis showed that after mo... |
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| Keywords: | Sodium Lignosulfonate Oxidation Modified |
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