水溶性漆用颜料(文献总结)第Ⅱ部分

颜料浆与乳胶混容是水溶性漆制造工艺过程的重要阶段。这过程的特点是由于分散漆料的相对不稳定性,水性颜料浆生成泡沫的倾向性很大,颜料与漆料混容时的(所谓“颜料休克”现象,即由于在稀释、吸附平衡的移位和加热过程     

HUNTSMAN推出一种新型通用性TIOXIDE TR88颜料

Huntsman Pigments在其著名的TIOXIDE系列中推出TIOXIDE TR88颜料．这是一种新型通用性金红石二氧化钛（TiO2）。该通用性颜料能提供优异的耐久性,出色的亮度、高遮盖力和颜色,特别研制用于水性室内／外装饰涂料中。     

ZnO-CoO型绿色无机颜料合成及影响因素研究

以ZnO和CoO为原料,采用固相烧结法制备了模拟叶绿素光谱曲线的绿色无机颜料,探究了该绿色无机颜料在380～1380 nm波长范围内的光谱曲线和颜色色度的变化规律.研究结果表明:通过调整原料配比、烧结工艺、辅助剂及粉磨参数等,可以调控该无机颜料色度变化(L?=42.8～54.63,a?=-8.82～-12.9,b?=3.19～5.28);CoO是决定颜料色度变化的主要物质,其含量为2.5wt％ 且烧结温度为1100℃ 时,可以制备得到色度最佳、模拟某叶绿素光谱曲线最优的绿色伪装颜料;通过球磨可以改善颜料的粒度进而影响颜色的变化,当球磨时间为1.5 h时颜料具有最佳的粒径和色度值.     

亨斯迈推新 专为装饰涂料设计

亨斯迈在其著名的TIOXIDE 系列中推出TIOXIDE TR88颜料，这是一种新型通用性金红石二氧化钛（TiO2）。该通用性颜料能提供优异的耐久性，出色的亮度、高遮盖力和颜色，特别研制用于水性室内／外装饰涂料中。     

汽车修补用水性聚氨酯底色漆制备研究

简要阐明了水性聚氨酯分散体如何满足汽车修补快速调色要求。分析了颜料、试验分散剂类型及用量、研磨工艺、颜基比及体系p H对水性聚氨酯底色漆性能的影响。结果表明,二氧化钛最佳分散剂/颜料质量比为0.02,环保柠檬黄为0.05,酞菁蓝等有机颜料为0.3~0.5,炭黑为1.5。研磨纳米材料透明氧化铁颜料时,选用高相对分子质量分散剂C,体系p H为7.0左右可有效抑制透明氧化铁黄与水形成水合氧化铁,保持透明性及稳定性不变。所制备的色漆热贮存稳定性好,施工性好,干湿膜颜色差异小,调色快速,可满足汽车修补行业需求。     

颜料、颜料制剂及填料

涂覆性好的无光水性涂料组合物及其制备,带有可固化基料的金属颜料及其应用,黑颜料组合物,从水性钛溶液制备金红石型颜料的工艺,含铝核或铝合金核的效应颜料、制备方法及其应用,彩色微结构效应颜料及其用于涂料和其他应用的制备,提高了光稳定性用磷酸盐包膜的二氧化钛颜料,工业涂料中二氧化钛的最佳分散,硫酸氧钛溶液热水解制得的高表面积纳米结晶二氧化钛,     

红外反射颜料在建筑涂料中的应用研究

通过实验研究了红外反射颜料对水性建筑涂料性能的影响,分析了反射颜料提高反射性能的机理,分别提供了具有高反射性能的白色涂料和彩色涂料的制备方案。研究结果表明:当涂料中普通二氧化钛的添加量达到配方量的10%,可制得反射性能良好的白色涂料,而在制备彩色涂料时则需要添加大粒径的二氧化钛,才能保证涂层的反射性能,尤其是近红外反射性能。实验分析表明根据所需制备涂料的颜色选择合适的二氧化钛粒径搭配,可制得反射性能良好的彩色涂料。     

涂料名词术语解释(草案)

3.颜料和体质颜料 (1)颜料: (俄) Pigment,Farbe (德) pigment (英) pigment (法) 颜料(色料、) (日) 是用来制备色漆的有色微细固体粒子,不溶于油及水。在漆料中,能使涂膜具有一定的颜色和遮盖力,并使漆膜增加物理机械性能(如耐磨性、耐热性等),用于涂料工业的颜料种类繁多,按其颜色特征,可分为白色颜料(如钛白、锌钡白、氧化锌等)和彩色颜料(如铁蓝、铅铬黄等)。彩色颜料中按     

乳胶漆用二氧化钛颜料

工业发达的国家,乳胶漆的产量都相当大。例如,近些年来,美国建筑乳胶漆占美国油漆总产量的大约30％,产量100多万吨/年。所以,尽管乳胶漆配方中二氧化钛颜料含量不高,但整个乳胶漆品种所消费的二氧化钛颜料的量是相当大的。世界二氧化钛颜料产量的61％消费于涂料中,其中的43％是消费于水性涂料中,这其中,乳胶涂料占绝对优势。二氧化钛颗料在乳胶漆中主要起着遮盖力作用。国外高质量乳胶漆中二氧化钛颜料耗量大约为每加仑乳胶漆2～2.5磅,由于二氧化钛颜料很贵,在乳胶漆成本中,二氧化钛颜料有时占40～50％。     

低温燃烧合成Ce1-xPrxO2红色稀土颜料的呈色性能的研究

以Ce(NO3)3·6H2O,Pr6O11为主要原料,用低温燃烧合成法在250℃左右点火,合成了从粉红、红色直至棕红的一系列Ce1-xPrxO2(0.01≤x≤0.50)红色稀土颜料.用XRD,CIELab色度仪对产物进行了测试分析,研究了Pr掺杂量、保温温度及时间对其呈色性能的影响.结果表明:不同的Pr掺杂量对该Ce1-xPrxO2红色稀土颜料色度值和主波长均有影响.掺杂后Pr进入CeO2晶格,从而使该颜料呈现出一系列红色.在不同温度下对低温燃烧合成颜料进行热处理,随温度升高,其色度值a*增加,明度值L*降低,颜色逐渐变深,主波长增加.在1200℃下,对该颜料进行不同时间的保温,发现保温2h的呈色性能最佳.     

Prediction of architectural coating performance using titanium dioxide characterization applying artificial neural networks

Prediction of paint properties is a critical issue for the coatings industry, since experimentation is time consuming and a lot of financial and human resources are needed to test or develop new products. In current market conditions, cost savings and product innovation are critical issues. In this article, an artificial neural network, of the feed forward type, was trained using as inputs key properties of titanium dioxide and two formulation parameters (pigment volume concentration and titanium dioxide content) for a water-based architectural coating. The outputs of this research were spread rate, color (L*, a*, b*) and tinting strength. Test data were used to check the accuracy of the model, demonstrating the viability of paint properties prediction related to the properties of the titanium dioxide formulation with high correlation (>95%).     

Glossy topcoat exterior paint formulations using water-based polyurethane/acrylic hybrid binders

The development of glossy topcoat one-pot exterior paint formulations using water-based polyurethane/acrylates hybrid binders as well as the assessment of its properties through different conventional tests is discussed in this work. Polyurethane (PU) anionomer having 2-ethoxymethacrylate terminal groups was prepared following a prepolymer mixing process. This prepolymer was chain extended in aqueous solution and after addition of acrylic monomers radical polymerized. Paints were prepared using titanium dioxide as unique pigment. Panels coated with air-dried paints with three pigment to volume concentration (PVC) values were subjected to standardized tests including adhesion, flexibility, gloss and color determination. Accelerated weathering tests were carried out to evaluate changes in properties, especially gloss and color, of painted panels. Solvent-based acrylic and polyurethane paints were included as high gloss quality reference coatings. It was found that air-dried formulations based on hybrid polyurethane/acrylic with up to 50 wt.% of acrylic component, show a gloss as high as 70 and the relative gloss change after accelerated weathering test is lower than the pure solvent-based acrylic and polyurethane paints.     

Moisture determination in plasticizer–pigment formulations by gas chromatography

A rapid quantitative method has been developed for the determination of small amounts of water present in plasticizer-pigment and epoxy resin–pigment dispersion used in polyurethane formulations. Specific dispersions examined have been the systems diisooctyl phthalate–titanium dioxide and titanium dioxide–epichlorhydrin–Bisphenol A. The samples examined contained 50–70% titanium dioxide.     

A study of polyurethane ionomer dispersant

Anionic polyurethane ionomers as the dispersant in water‐soluble acrylic baked paint were successfully synthesized at our lab and these ionomer structures have been proven by infrared spectra. In aqueous solution, the surface tension for polyurethane ionomer molecules with different ionics was found to increase with increasing the concentration of ionics, as a result of the hydrophobics of ionomer molecules adsorbed at the air–water interface becoming even more ordered. It was also found that the viscosity is higher for polyurethane ionomer with L ‐2,5‐diaminovaleric acid hydrochloride than for polyurethane ionomer with sodium 4,4‐dihydroxy‐l‐butane sulfonate (DS200) or with dimethylol propionic acid (DMPA) in water. For the wettability and dispersion of titanium dioxide pigment present in water‐soluble acrylic baked paint, the polyurethane ionomer molecules with respective sodium 4,4‐dihydroxy‐L ‐butane sulfonate, DMPA, DS200 containing 3% 1,3‐propane sultone (ES200) and DMPA containing 3% ES200 are considered to be better dispersants. The titanium dioxide pigment was found to become finer, as the agitation time and the ionic concentration of anionic polyurethane ionomer were increased. In addition, the system with DS200 or dimethylol propionic acid will make the dispersion of titanium dioxide pigment stable in water‐soluble acrylic paint. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 103–111, 2005     

金红石型纳米钛白粉在车辆涂料中的应用

介绍了金红石型纳米二氧化钛在丙烯酸金属烘干漆中的应用,通过将有机光稳定剂及不同比例的金红石型纳米二氧化钛加到丙烯酸金属烘干漆中,并检测其相应的性能,观察金红石型纳米二氧化钛对涂膜的耐候性、硬度、附着力、颜料沉淀以及金属闪光漆的随角异色效果的影响。     

Shear rate-dependent structure of polymer-stabilized TiO2 dispersions

Opacity, gloss, stability, color acceptance, and other paint properties depend on the quality of pigment dispersion. We measured the shear rate-dependent structure of titanium dioxide (TiO₂) dispersions stabilized with commercial polymer dispersants in water. Two different MW polyacid dispersants and two different MW acrylate copolymers were used in this study. The experiments were conducted at the NIST Center for Neutron Research on the perfect crystal diffractometer for ultra-high resolution small-angle neutron scattering (USANS) measurements. The results for TiO₂ scattering and rheology show that shear induced dissociation occurs for certain dispersants and shear induced association of TiO₂ clusters is observed for other dispersants. The results suggest new ways to consider dispersant selection for paints and the quality of pigment dispersions.     

涂料用钛白粉的评估和测试方法

以醇酸树脂为成膜物质,通过加入不同的钛白粉,分别制得5种醇酸涂料。通过测试钛白粉的吸油量,涂料的细度,光泽,QUVA老化试验,湿热试验和户外暴晒试验,考察5种钛白粉的区别,并优化选择得到性能最佳的钛白粉,为钛白粉的筛选提供了一种简单高效的方法。     

Dependent light scattering in white paint films: clarification and application of the theoretical concepts

Among the numerous publications analyzing the causes and consequences of titanium dioxide crowding on the optical properties of white paint films, one notes some inconsistencies. First, a significant number of studies are inclined to describe “dependent” and “multiple” scattering of light as distinct phenomena. Second, the transition from independent to dependent light-scattering is often associated with an ill-defined “threshold” concentration. The aim of this study is to clarify the intricate connections between these two scattering regimes and in particular to show that for white paint films loaded with rutile titanium dioxide pigments, “dependent” light scattering is merely a particular manifestation of multiple scattering processes. We also clarify that the transition from independent to dependent scattering is a continuous process that cannot be formally related to a specific threshold in the pigment volume concentration. Finally, we propose a simple method based on the dependent scattering amplitude to assist paint formulators facing the task of improving the hiding power of a white paint either by increasing the quantity of pigments or by improving their spatial state of dispersion.     

超细涂料色浆的制备及其稳定性研究

涂料色浆的着色强度和色牢度等性能除了与颜料分子的化学结构、分散性密切相关外,还与涂料色浆微观颗粒的大小与分布有关。颜料粒径越小,其着色强度、光泽和遮盖力越好,因此,超细涂料色浆的制备得到了人们越来越多的关注。本课题研究了超细涂料色浆的制备方法,讨论了分散剂结构及用量、超声波处理时间、超声波处理功率对颜料分散效果的影响,分析表征了所制备涂料色浆的稳定性。研究结果表明分散剂FPE对颜料的分散效果较好,其较佳工艺为:颜料含量15%,分散剂用量占颜料用量的20%,超声波处理时间30 min,处理功率800 W,所制备的超细涂料色浆的粒径可达到150.9 nm,其离心稳定性达93.27%。稳定性实验表明所制备的涂料色浆具有良好的对温度、pH和电解质的稳定性。     

汽车修补涂料色母用分散剂的选用

通过对树脂、颜料、分散剂和混合溶剂的选择和定量,合成了通用色母。用指研法检验色母的分散稳定性,用倾流法或指擦法检验颜料的流动性,介绍了影响色母分散稳定性和颜料流动性的因素和原理,着重讨论了汽车修补涂料色母的单色浆微脂技术中分散剂的复配分散。