| 引用本文: | 张玉玲,吴明松,黄君礼,韩洪军,程志辉.天冬氨酸-谷氨酸共聚物的阻垢机理[J].哈尔滨工业大学学报,2010,42(8):1250.DOI:10.11918/j.issn.0367-6234.2010.08.015 |
| ZHANG Yu-ling,WU Ming-song,HUANG Jun-li,HAN Hong-jun,CHENG Zhi-hui.Scale inhibition mechanism of aspartic acid-glutamic acid copolymer[J].Journal of Harbin Institute of Technology,2010,42(8):1250.DOI:10.11918/j.issn.0367-6234.2010.08.015 |
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| 摘要: |
| 天冬氨酸-谷氨酸共聚物(PAG)具有优良的阻垢性能,为保障其安全广泛地应用到各个领域,对PAG的阻垢作用机理进行研究,以CaCO3和CaSO4为研究对象,对有无阻垢剂(PAG)条件下的CaCO3和CaSO4晶体进行XRD和SEM测试,并计算CaCO3晶体表面的分维数.结果表明:PAG改变了CaCO3晶体的晶格结构,破坏了CaSO4晶体的微晶构造.PAG抑制CaCO3和CaSO4结垢的主要作用机理分别表现为晶格畸变作用和吸附及随后的分散作用. |
| 关键词: 天冬氨酸-谷氨酸共聚物(PAG) CaCO3 CaSO4 阻垢机理 |
| DOI：10.11918/j.issn.0367-6234.2010.08.015 |
| 分类号:TQ085 |
| 基金项目:中国博士后基金资助项目(20070420884);哈尔滨市科技攻关项目(2003AA4CS123) |
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| Scale inhibition mechanism of aspartic acid-glutamic acid copolymer |
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ZHANG Yu-ling1,2, WU Ming-song1, HUANG Jun-li1, HAN Hong-jun1, CHENG Zhi-hui1
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1.School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China;2.School of Environmental Science & Engineering,North China Electric Power University,Baoding 071003,China
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| Abstract: |
| Aspartic acid-glutamic acid copolymer has good inhibition to CaSO4 and CaCO3.In order to ensure its application security in various fields,scale inhibition mechanism of PAG was studied.X-ray diffraction(XRD) and scanning electron microscopy(SEM) were used to analyze CaCO3 crystal and CaSO4 crystal with and without the scale inhibitor.And fractal dimension of CaCO3 crystal was calculated.The results show that the configuration of CaCO3 crystal lattice has been changed,the structure of CaSO4 crystallite has been broken.The main mechanisms of PAG inhibition to CaCO3 crystal and CaSO4 crystal are lattice distortion and cohesion and the following dispersion respectively. |
| Key words: aspartic acid-glutamic acid copolymer(PAG) CaCO3 CaSO4 inhibition mechanism |
