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50金币求助汉译英（急）(已经得到了)
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由于现代工业和生活的发展导致排水中水体发生物理和化学上的变化，使水质变坏，可利用的水资源减少，污水中有机质含量大量提高。而有机质表面通常带有负电荷，因此水处理剂中的阳离子絮凝剂越来越引起科研工作者的广泛关注。季铵化甲基丙烯酸二甲胺基乙酯（QPDM）与丙烯酰胺（AM）共聚物QPMAM是一种带有阳离子基团的水溶性高聚物，它在水溶液中经自由基聚合生成的主链上带有水溶性的阳离子聚电解质，是一种梳形聚合物。与其他阳离子聚丙烯酰胺类水溶性高分子化合物相比，其分子结构具有大分子链上所带正电荷密度高，水溶性好，阳离子单元结构稳定，PH适用范围广，絮凝能力强，在污水处理中可以达到用量少，无毒，不污染环境等优点，必将在水处理行业得到广泛的发展 本文采用原子转移自由基聚合（ATRP）活性聚合方法，利用大分子引发剂，以甲基丙烯酸二甲胺基乙酯为单体首先合成末端带有双键，分子量分布较窄的大分子单体，并将季铵化的大分子单体进一步与丙烯酰胺共聚合成了高分子梳形结构的QPDMAM。本文讨论了QPDMAM的合成原理，单体提纯，合成路线，共聚物组成控制及引发剂用量和单体配比对共聚物合成的影响，通过改变不同的引发条件，合成了一系列的QPDMAM。采用红外光谱和核磁共振谱图对聚合产物的结构分析，明确了共聚产物的结构，即阳离子大分子单体和丙烯酰胺单体发生了共聚反应。 利用二氧化钛模拟废水研究了合成物质在水中的絮凝性能，并讨论了不同温度，PH，共存离子，用量等条件下的影响，同时，运用极化曲线法、电化学阻抗法（EIS）等方法研究了QPDMQM于1mol•L-1盐酸溶液中对碳钢的缓蚀作用，用SEM观察了添加PDTMP前后碳钢表面的腐蚀形貌。为水处理絮凝剂的开发利用提供了有价值的应用基础研究。 特殊词汇可用【中文词汇】代替 求助（急） QQ380843703 还以为是你们自己翻译的呢，晕倒了，都是用软件翻译的吧，郁闷，能这样我自己就用了， 谢谢大家，我分发给帮忙的四个朋友，谢谢你们啊 [ Last edited by tanshubo2005 on 2008-5-30 at 20:37 ] |
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As modern industrial life and lead to the development of the drainage of water occurred on the physical and chemical changes in water quality to deteriorate, can reduce the use of water resources, sewage substantial increase in organic matter content. Organic matter and usually surface with a negative charge, water treatment agent in the cationic coagulant scientific research workers from more widespread concern. Quaternization dimethyl amino methyl ethyl acrylate (QPDM) and acrylamide (AM) is a copolymer QPMAM cation group with the water-soluble polymers, which in aqueous solution by radical polymerization The main production chain with the water-soluble cation polyelectrolyte, is a comb-shaped polymer. Cation polyacrylamide with other types of water-soluble polymers compared to the molecular structure of macromolecules chain brought positive charge high density, water-soluble, and cation unit structural stability, PH apply a wide range of ability flocculation , In sewage treatment can be achieved with less, non-toxic, non-polluting the environment, and other advantages, will be in the water treatment industry for development In this paper, ATRP (ATRP) of polymerization, the initiator of macromolecules, dimethyl amino methyl ethyl acrylate monomer for the first synthesis of the end of a double bond, narrow molecular weight distribution of macromolecules Monomer and ammonium quarter of Macromonomer further copolymerization of acrylamide and a comb-shaped structure of the polymer QPDMAM. This article discusses the QPDMAM of the principle of single purified, synthetic routes, copolymer composition of control and initiator of the copolymer and monomer ratio of the impact caused by changes in different conditions, the synthesis of a series of QPDMAM. Using infrared spectroscopy and nuclear magnetic resonance spectra of the polymerization of the structure, clearly the product of a copolymer structure, that is, cationic Macromonomer and acrylamide monomer in the copolymerization. Use of titanium dioxide on a simulated wastewater substances in the water of the flocculation performance, and discussed a different temperature, PH, coexistence ions, such as the amount under the influence at the same time, the use of polarization, EIS Law (EIS) , And other methods to study the QPDMQM 1 mol • L-1 hydrochloric acid in the carbon steel corrosion, observed by SEM add PDTMP before and after the carbon steel corrosion of the surface topography. Flocculant for the development and utilization of water treatment provided a valuable application of basic research. |
4楼2008-05-28 20:58:48
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
tanshubo2005(金币+20,VIP+0):谢谢^_^
tanshubo2005(金币+20,VIP+0):谢谢^_^
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As modern industrial life and lead to the development of the drainage of water occurred on the physical and chemical changes in water quality to deteriorate, can reduce the use of water resources, sewage substantial increase in organic matter content. Organic matter and usually surface with a negative charge, water treatment agent in the cationic coagulant scientific research workers from more widespread concern. Quaternization dimethyl amino methyl ethyl acrylate (QPDM) and acrylamide (AM) is a copolymer QPMAM cation group with the water-soluble polymers, which in aqueous solution by radical polymerization The main production chain with the water-soluble cation polyelectrolyte, is a comb-shaped polymer. Cation polyacrylamide with other types of water-soluble polymers compared to the molecular structure of macromolecules chain brought positive charge high density, water-soluble, and cation unit structural stability, PH apply a wide range of ability flocculation , In sewage treatment can be achieved with less, non-toxic, non-polluting the environment, and other advantages, will be in the water treatment industry for development In this paper, ATRP (ATRP) of polymerization, the initiator of macromolecules, dimethyl amino methyl ethyl acrylate monomer for the first synthesis of the end of a double bond, narrow molecular weight distribution of macromolecules Monomer and ammonium quarter of Macromonomer further copolymerization of acrylamide and a comb-shaped structure of the polymer QPDMAM. This article discusses the QPDMAM of the principle of single purified, synthetic routes, copolymer composition of control and initiator of the copolymer and monomer ratio of the impact caused by changes in different conditions, the synthesis of a series of QPDMAM. Using infrared spectroscopy and nuclear magnetic resonance spectra of the polymerization of the structure, clearly the product of a copolymer structure, that is, cationic Macromonomer and acrylamide monomer in the copolymerization. Use of titanium dioxide wastewater studied the synthetic substances in the water Flocculating performance, and discussed a different temperature, PH, coexistence ions, such as the amount under the influence at the same time, the use of polarization, EIS Law (EIS) , And other methods to study the QPDMQM 1 mol • L-1 hydrochloric acid in the carbon steel corrosion, observed by SEM add PDTMP before and after the carbon steel corrosion of the surface topography. Flocculant for the development and utilization of water treatment provided a valuable application of basic research. |
2楼2008-05-28 20:57:54
3楼2008-05-28 20:58:22
5楼2008-05-28 21:54:13