电泳涂料

200707051电沉积油漆;200707052电泳槽液颜料絮凝的补救办法及对策;200707053电泳涂膜“花斑”问题的解决;200707054聚酯氨基电泳漆的研制与探讨.     

也谈阴极电泳涂装

介绍了阴极电泳涂料投槽的基本条件,长更新周期下,如何调整槽液的工艺参数以维持槽液的稳定性,保证涂装质量,延长使用寿命,以及槽液的更换及混槽原则。     

车身电泳缩孔产生原因分析与防治

针对涂装电泳车身出现批量小缩孔问题,经挂板试验分析、实车生产验证和槽液取样送检分析,确定电泳小缩孔是因电泳槽液老化和长菌导致。通过电泳倒槽、补充新电泳树脂和溶剂、添加药剂等手段,改善了槽液参数指标,提升了电泳漆膜的外观质量和防腐蚀性能,为延缓槽液老化的速度和改善生产工艺的现场管理提供参考。     

论电泳涂装生产的管理

论述了电泳涂装中被涂物，电泳槽和槽液，涂装环境和漆膜质量四个方面的管理要点。     

大客车电泳涂装新技术

介绍了电泳涂装技术在大客车涂装中的应用、超长更新周期电泳槽的管理要点，以及大客车电泳涂装常见弊病及其解决方法。     

油品微量污染对汽车阴极电泳缩孔影响的研究

用表面张力法和偏光显微镜法对轿车涂装中油污染引起阴极电泳缩孔的现象进行了研究．比较了不同油品微量污染不同电泳槽液后发生的表面张力变化情况和污染油滴在槽液中的分散及存在形态。进而讨论了生产中最佳油品的选择依据和电泳槽液抗缩孔性能的重要性。     

高温导致电泳槽液破乳的补救方法

介绍了电泳槽液因高温而导致破乳的补救方法，该方法也是使损失减少到最低程度的方法之一。     

浅谈高泳透力电泳材料应用

主要介绍了阴极电泳涂装原理、泳透力的概念,讨论了电泳槽液固含、槽液的pH、槽液的电导率、溶剂含量、电泳时间、施工电压、阳极等对阴极电泳泳透力的影响,并且介绍了高泳透力的原理及切换注意事项。     

丙烯酸阳极电泳涂料的电泳涂装工艺研究

针对铝型材丙烯酸阳极电泳涂料,探讨了槽液固体含量、电泳电压、电泳时间、槽液pH等因素对漆膜外观和厚度的影响,确定了电泳涂装的最佳工艺参数:固体分5%～6%,电压120 V,电泳时间80～100 s,电泳槽液pH 7.6～8.1。     

铝型材阳极电泳涂装设备

1 电泳槽：铝型材电泳槽多设计为长方形矩形槽，其内部大小取决于装挂吊的尺寸，槽体用4-6mm钢板，内衬用聚丙烯或环氧玻璃钢，需设置溢流槽。     

炭黑研磨分散工艺的研究

根据颜料粒子的絮凝理论,讨论了涂料生产中炭黑产生絮凝的原因。提出了一种操作简便、行之有效的炭黑润湿分散工艺,并与现有文献推荐的工艺进行比较,具有实用价值。     

Influence of organic pigment particles on millbase flow of nitro-cellulose/alcohol-rich liquid inks

Millbase flow of nitro-cellulose/alcohol-based inks deteriorates above a critical pigment weight fraction in the ink which differs from pigment to pigment. Below this critical concentration the inks are flocculation-resistant by virtue of a stabilizing adsorbed layer of NC resin on the pigment particle surfaces. The pigment particles are large aggregates of crystals, from which additives such as abietyl resin have been shown to dissolve off into the ink medium. The aggregates are associated with liquid medium immobilized within the shear boundary near the pigment/medium interface (includes adsorbed layers and liquid within pores). This results in the effective pigment volume fraction in the ink being higher than that calculated from the weight fraction. When considered in terms of the effective volume fraction, most of the pigments have the same critical concentration of about 0.2–0.25. This indicates that deterioration in flow at higher concentrations is due in the first instance to crowding of particles, rather than to the failure of the mechanism of flocculation resistance per se. The robustness of the flocculation resistance is indicated by a low rate of increase of the strength of the structure with an increase in the effective volume fraction above the critical concentration. Robustness is important in maintaining manageable flow at high concentrations. Increasing the proportion of ethyl acetate in the solvent blend can adversely affect the millbase rheology of dispersions of some pigments in NC ink media due to induced flocculation and structure formation. The improved solvency of the blend for NC resin has been shown to reduce the amount of NC resin adsorbed on the particles of an ester-sensitive pigment. Other pigments give inks with rheology insensitive to ester content. This is attributed to more specific interaction of the NC resin with the pigment particle surfaces. The effect of temperature on flocculation resistance is consistent with these views.     

纯棉织物涂料染色水洗褪色率的控制

纯棉织物涂料染色水洗褪色要达到洗后露白的特殊效果,中浅色品种宜采用全涂料染色,深色品种常采用活性/涂料两浴法染色,但活性/涂料两浴法染色洗后露白效果不佳,分别探讨了全涂料染中浅色、涂料/活性-浴法染深色的染色工艺,分析涂料染色水洗褪色率影响因素,更有效地控制水洗褪色率,保证洗后露白效果.     

乳胶漆电脑调色系统的建立

描述了电脑调色系统的组成、电脑配色基本原理、电脑调色对色浆的要求,介绍了基础漆的建立(包括颜料体积浓度设计,颜填料、乳液、润湿分散剂、增稠剂等原料的选择),给出了颜料絮凝度及着色力的检测方法。     

壳聚糖对桑叶水提液的絮凝工艺研究

运用单因素实验和正交实验,以总黄酮和总多糖含量为指标,对壳聚糖加入量、桑叶水提液质量体积比、药液pH值及水浴温度进行考察,确定壳聚糖对桑叶水提液的最佳絮凝工艺条件为:桑叶水提液质量体积比1∶10(g∶mL)、壳聚糖加入量1.2 mL.g-1、药液pH值6.0、水浴温度35℃、絮凝时间3 h。在此条件下,所得总黄酮和总多糖平均含量分别提高至27.46 mg.mL-1、51.15 mg.mL-1。该方法成本低、生产周期短。     

表面活性剂对复合刷镀液中纳米WC分散性的影响

研究了在(Ni-P)-纳米WC复合刷镀液中添加阴离子型表面活性剂SDS、阳离子型表面活性剂PEI、非离子型表面活性剂OP对分散体系分散效果的影响.结果表明:表面活性剂能有效阻止复合刷镀液中微粒的絮凝、团聚,其用量对复合刷镀液分散效果有显著的影响.当阴离子型表面活性剂SDS的质量浓度为0.2g/L,阳离子型表面活性剂PEI为O.8g/L时,刷镀液中沉降粉体体积最小,添加非离子型表面活性剂OP的分散体系分散效果较差.     

传统水浴提取紫甘蓝红色素动力学研究

本文通过分析传统水浴提取紫甘蓝红色素的传质机理,建立了提取过程中紫甘蓝红色素得率与各工艺条件的动力学模型。经验证,所建立的动力学理论模型与实测数据相吻合,可良好地模拟色素提取过程,用于指导工业生产。     

Pigment dyeing of polyamide‐epichlorohydrin cationized cotton fabrics

A synthesized cationic reagent named polyamide‐epichlorohydrin (PAE) was used to cationize cotton fabrics which were dyed with nanoscale pigments after PAE modification. The results showed that when the PAE concentration was below 7% (owf), the K/S value increased nearly linearly with increasing of PAE concentration, and excess that concentration the K/S value did not increase further. With increasing the pH value of cationization bath, the K/S value increased first and then decreased, the maximum K/S value appeared at pH 9–10. Cotton fabrics cationized at 80°C for 20 min exhibited the best cationizing result. Both the pigment uptake and the color strength reached their own maximum values when the dye bath was neutral. When the pigment concentration was 1% (owf) the addition of 1g/L sodium chloride in the dye bath could decrease the pigment uptake while for 5% (owf) pigment concentration the uptake increased with increasing the amount of sodium chloride. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

Pigment/dispersant interactions in water-based coatings

Conclusions  By using non-ionic dispersants it is possible to produce titanium dioxide pigment suspensions that have full steric stabilisation. Water-based pigment dispersions thus stabilised can show greater resistance to flocculation in both the wet and dry phases. This can result in better stability and compatibility of paints as well as higher opacity in dry paint films.     

浅析乳胶漆中色浆展色性的影响因素

讨论了乳胶漆中的润湿分散剂、颜填料、乳液、增稠剂、色浆本身等对色浆展色性的影响,以解决体系稳定性,以及颜料絮凝、泛白、浮色发花等弊病,提高色浆展色性。经综合考虑和试验后,得到稳定、高展色性的乳胶漆配方。