电泳涂料

无铅环氧树脂阳离子电沉积涂料组合物；底材对水性环氧树脂阴极电沉积性能的影响；涂于基材上的可电沉积介电涂料组合物和形成该介电涂料的方法；无光阴离子电泳涂料；新建电泳涂装线投产前的准备工作     

电泳涂料

阳离子涂料组合物及其涂覆方法：JP2004—190 015【日本专利公开】／日本：Kansai Paint Co．，Ltd．(Nishiguchi，Shigeo等)，水性阴极电泳涂料组合物及其涂装工艺：US2004—146 716[美国专利申请公开]／德国：(Lehmann，Horst等)．电沉积涂料组合物及其相关工艺：US2004—159 548[美国专利申请公开]／美国：(Peffer Robin M．等)．(2003．2．13)；高泳透力阴极电泳涂料用树脂乳液：CN1 493 633A[中国发明专利申请公开]/中国：江苏鸿业涂料科技产业有限公司(方基祥等)．     

阴极电泳涂料的研制

阐述了阴极电泳涂料的特点，并对其研制过程进行了探讨，最终研究出了具有高泳透力、库仑效率、优异的耐腐蚀及槽液稳定性好等优点的新一代阴极电泳漆。     

电泳涂料

Ltd·(Yokoyama.Tetsuya等),一2003.2.21一8页一20()l/242439(2001.8.9);IPCC09D133/00 该组合物含(A)由带夕2个不饱和基团的化合物、带经基不饱和单体、带COZH的不饱和单体和其他不饱和单体制得的丙烯酸聚合物,以及(B)三聚氰胺树脂和/或封闭多异氰酸醋交联剂。例如,一种组合物含苯乙烯-甲基丙烯酸甲醋一丙烯酸丁醋一丙烯酸乙醋一丙烯酸2一经乙醋一丙烯酸一异氰酸三烯丙醋共聚物(材认60 000)、Nikakac MX 430(三聚氰胺树脂)和三乙胺,在室温下贮存l周后其外观无变化0306054单罐高温固化热固性阴极涂料分散体:EPI27 1 671[欧洲专利申…     

新一代超高泳透力电泳涂料的应用性能研究

薄膜前处理工艺和紧凑型面漆工艺在国内的应用逐渐增多,而现有电泳与其配套性不佳,许多工艺问题亟待解决。本文深入研究了一款新一代超高泳透力水性环氧聚氨酯电泳涂料(EPIC)的相关性能。以目前在用的水性环氧聚氨酯电泳涂料(ED7)为基准,对比了EPIC与薄膜前处理工艺和紧凑型面漆工艺配套时的性能表现。对比发现,EPIC外观、附着力、抗石击以及耐腐蚀性能均优于或等于ED7。在对常见薄膜前处理缺陷的遮盖能力上,EPIC明显优于ED7。同时,在EPIC涂层上喷涂的面漆外观也优于ED7。以上结果表明,与ED7相比,EPIC与薄膜前处理工艺和紧凑型面漆工艺具有更好的配套性。     

电泳涂料

料550303096含长链烷基硫酸铜盐组分的阳离子电沉积涂料组合物及其制备:EPI 256 605[欧洲专利申请,英]z日本:NIPPon paint Co。Ltd·(Jun,Tanabe)一2002.1 1.13一11页一2001/138 513(2001.5.9):IPC COgDS/44 含碱性树脂、硫化改性环氧树脂(带有1个炔丙基和1个含不饱和双键的烃基团)的阳离子电沉积涂料组合物可提高固化性而不使用含有害重金属的金属催化剂。该阳离子电沉积组合物含0.05%~5%长链烷基硫酸醋铜盐组分和硫化改性环氧树脂(带l个炔丙基和l个含不饱和双键的烃基团)。9.一2()()l/92 691(2()01.3.28):IPCC()9D163/()() 涂膜…     

阴极电泳涂料用新型交联剂的制备

采用ε－己内酰胺为封闭物，制备了二苯甲烷二异氰酸酯交联剂，用于阴极电泳涂料，以提高阴极电泳涂料的泳透力和降低固化温度。阐述了交联剂和阴极电泳涂料的制备工艺，并通过泳透力和固化分率的测定来验证该交联剂的作用。     

电泳涂料

200903018 阴极电沉积涂料组合物及其制备和在汽车底材上的应用;200903019 阳离子电沉积涂料组合物     

厚膜阴极电泳漆的特点及其发展趋势

厚膜型阴极电泳漆是阴极电泳漆的新一代产品，其膜厚明显高于一般电泳漆。介绍了厚膜电泳漆的特点及其发展方向。     

聚丙烯酸丁酯阴离子聚体和聚苯乙烯阳离子聚体共混物及相容性的研究

本文利用动态粘弹谱对一系列丙烯酸丁酯／丙烯酸阴离子聚体和苯乙烯／４－乙烯基吡啶阳离子聚体的共混相容性进行了研究。研究结果表明：两者的相容性与各自所含的离子浓度有关，当其离子浓度大于１１％时，可达到完全相容的程度。     

阴极电泳涂装的槽液管理

本文简要介绍了电泳涂装设备,着重阐述了主要管理项目对涂装质量的影响及管理指标变动时的调整方法。     

Separation of cation–anion mixture using micellar-enhanced ultrafiltration in a mixed micellar system

Aqueous solution containing copper (cation) and potassium permanganate (anion) was treated by ultrafiltration using mixed micellar system comprising of sodium dodecyl sulfate and cetylpyridinium chloride. Simultaneous separation characteristics of both cation and anion, as well as permeate flux were studied for various operating conditions, namely, transmembrane pressure drop and cross-flow rate. The study was carried over a wide concentration range of both solutes. In the mixture, copper concentration was in the range from 0.05 to 4.0 kg/m³ and that of potassium permanganate was 0.05 to 0.25 kg/m³. Retention of copper was in the range of 90–100% and that of potassium permanganate was 96–99%. Permeate flux was found to be less in the mixed micellar system compared to single surfactant system. A four step chemical treatment process was proposed to recover and reuse the surfactants.     

脱盐水站离子交换树脂污染的复苏处理

脱盐水站采用空气擦洗法对阳树脂进行钙污染复苏处理,采用碱性食盐法对阴树脂有机物污染进行复苏处理,另外也采用适当的方法对阴树脂的铝、铁污染进行复苏处理,均取得较好效果。     

Simultaneous monitoring of the transport of anions and cations across polypyrrole based composite membranes

A mechanism for the macroscopic charge balance during the transport of anions and cations across polypyrrole based composite membranes is proposed. For the mechanism to be studied, anions and cations were monitored simultaneously across PPy based composite membranes, which are known to have cation exchange (PPy(PSS)), anion exchange (PPy(ClO₄)) and mixed ion exchange properties (PPy(pTS)). Even though none of the membranes were found to be completely permselective, the flux of cations was higher than that of anions across the PPy(PSS) composite membrane, while the flux of anions was higher than that of cations across the PPy(ClO₄) composite membrane. Distinct changes in pH of the receiving solution were also observed. These were a decrease in pH when a predominantly anion exchanging polypyrrole composite membrane was used, and an increase in pH when a membrane that maintains charge balance principally by cation exchange was used. When membranes which display approximately equal permeability towards anions and cations were used the pH of the receiving solution was ca. 6–8. There was only a negligible flux of Ca²⁺ across the PPy(PSS) membrane in the transport experiments carried out with the source solution consisting of either Ca(NO₃)₂ or an equimolar mixture of KNO₃ and Ca(NO₃)₂. The PPy(PSS) composite membrane was impermeable towards NO₃⁻ ions when the source solution was Ca(NO₃)₂ but permeability towards NO₃⁻ was observed when the source solution was either KNO₃ or an equimolar mixture of KNO₃ and Ca(NO₃)₂.     

High-pressure solubility of carbon dioxide in imidazolium-based ionic liquids with anions [PF6] and [BF4]

The solubility of carbon dioxide in three ionic liquids (ILs) under supercritical fluid condition was measured at pressures up to 32 MPa and at temperatures of 313.15, 323.15, and 333.15 K in a high-pressure view cell. The imidazolium-derivative ionic liquids 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF₆]), 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF₄]), and 1-octyl-3-methylimidazolium tetrafluoroborate ([omim][BF₄]) were employed in this research. The effects of pressure, temperature, nature of anion and cation as well as the water content on the solubility of CO₂ in the ILs were investigated experimentally. The solubility of CO₂ in the IL was higher for the ILs with longer cationic alkyl group and for the ILs with lower anion polarity. The lower the water content or the lower the temperature as well as the higher the pressure, the higher was the solubility of CO₂.     

Influence of ammonium salt on electrowinning of copper from ammoniacal alkaline solutions

In order to develop an energy-saving copper recycling process from wastes, electrochemical measurements were conducted in ammoniacal alkaline solutions containing Cu(I) ions and an ammonium salt of sulfate, chloride or nitrate. The results of each system were then compared. The polarization measurements suggested that the voltage required for the electrode process is lower in the chloride and nitrate systems than that in the sulfate system. The cathode current efficiency during the copper electrodeposition varied from 39 to 97% and increased with current density in the chloride and sulfate systems. In the nitrate system, the lowest cathode current efficiency of 30% was observed because of nitrate ion reduction. Based on these results, the power consumption required for the electrowinning stage of the copper recycling process was calculated. Among these three systems, the chloride system showed the lowest power consumption of 500 kWh t⁻¹ at the current density of 200 A m⁻², which is about 25% of the conventional copper electrowinning process from a copper sulfate-sulfuric acid solution.     

Influence of ionic liquids on the growth ofEscherichia coli

Ionic liquids are compounds that composed only of ions and are liquid at room temperature. Thus, it is normally named room temperature ionic liquid (RTIL). In this study, the application of RTILs to the extractive fermentation of biomaterials was investigated as a substitute of organic solvents. The relative toxicity of the RTILs on the growth ofE. coli was tested. The inhibition of cell growth in the presence of various ionic liquids was measured using solid and liquid culture, and EC₅₀ of each RTILs was calculated. The number of viable and total cells was measured by the number of colonies and optical density, respectively. Effective concentrations of toxicity (EC₅₀) in these tested systems were similar with conventional solvents, such as acetone, acetonitrile, and ethanol. The viability ofE. coli was affected by the polarity and ionic properties of ionic liquids. The resistance of the microorganisms against ionic liquids was different with the cations and anions composing ionic liquids. No general influence of the anionic compound of the ionic liquids was found on toxicity comparing with distinctive influence of cationic moiety.     

Total dissolved solids removal by electrochemical ion exchange (EIX) process

In the present investigation, synthetic wastewater was prepared by the addition of required amount of salts into deionized water. Their performance, on removal of Cl⁻, SO₄²⁻, PO₄³⁻, Ca²⁺, Fe²⁺ and Mg²⁺ in laboratory scale plate and frame type electrochemical ion exchange (EIX) cells, were evaluated under varying operating conditions. Ruthenium dioxide coated titanium plates (RuO₂/Ti) were used as anode and stainless steel plates as cathode in all the four different EIX cells used in the present investigation. All the four EIX cells were run for a maximum of 7 h. Almost complete removal of all the above ionic solids were observed within 4.5-7 h under one or more test conditions.