国外钛镍黄颜料的开发与应用

前言由于环境保护和工业卫生法规的日趋强化，近年来国外迅速开发出一种含钛的黄色颜料——钛镍黄颜料．该颜料对人体、环境无毒无害，且使用年限长、耐久性能好．钛镍黄颜料是一种金属氧化物混相颜料．它的名称很多，如钛黄、钛酸锑镍、钛酸锑、钛酸锑镍黄等等．代表性的化学式为：Nio·Sb2O3·2OTiO2。代表性的元素组成如表1所示．表t镇黄的元素组成（质量％）钛镇黄颜料是比较典型的由氧化镍、三氧化二锑和二氧化钛等金属氧化物混合相银饶而成的颜料．其硬度比较高，略带磨蚀性；密度也较大，为＃．＃～4og，cm’；吸油量低，为12～20…     

新型防锈颜料交换硅胶的研究

离子交换型硅胶作为无毒、低毒防锈颜料,具有优于常用的防锈颜料的性能。通过实验研究,表明其防锈性能优地红丹和铁红。并说明了利用稀土资源的重要意义。     

铝颜料表面改性防腐技术的研究与发展

结合国内外学者对铝颜料的改性手段和技术,概括了铝颜料表面改性中常用的多种无机材料和有机材料,介绍了铝颜料表面改性的主要方法,包括溶胶/凝胶法、原位聚合法、乳液聚合法、等离子聚合法和分散聚合法等,最后针对改性铝颜料的性能变化阐述了采用不同的改性材料和改性方法对铝颜料性能改善方面的影响,并指出了铝颜料表面防腐改性的未来研究趋势。     

凯米拉的钛白产业

到目前为止，芬兰还没有自己的钛矿物工业，但却拥有影响颇大的钛白工业．经营这份钛自产业的是世界著名的凯米拉集团的子公司凯米拉颜料公司（KemiraPigmentsOy）．该公司主要经营钛白颜料的生产和销售，收入占凯米拉集团的17％．凯米拉颜料公司通过稳健的经营，使其钛白产业获得了较大的发展，即使在1997年和1998年掀起的钛白公司兼并浪潮中，凯米拉颜料公司的钛白产业不仅没有被削弱，反而得到扩大和提高．例如1996年，该公司在世界10个顶尖钛白厂商中，生产能力占8．5％，居第5位，次于杜邦、Tioxide、SCM和克罗诺斯（Kronos）而经…     

多彩纳米复合功能金属颜料的市场需求

金属颜料是颜料的重要组成部分之一。随着科学技术和现代工业的发展，金属颜料的品种越来越多，应用范围也在不断扩大，用于装饰目的的铝颜料也已从单纯仿银发展到使被饰物具有五彩缤纷的颜色，同时还闪现金属亮点。金属颜料的另一重要特性是“随角异色”效应或“双色”效应。另     

几种绿色颜料对太阳光反射隔热涂层性能的影响

目的探究同色异谱颜料对太阳光反射隔热涂层性能的影响,为颜料的筛选提供理论支撑。方法分别将相同掺量的三种绿色颜料与苯丙乳液混合制备太阳光反射隔热涂层,探究颜料本身晶体结构和光学性能对涂层性能的影响。采用X射线衍射仪、紫外/可见/近红外分光光度计、红外发射率测量仪、精密色差仪和涂层力学性能测量仪对颜料和涂层的性能进行表征。结果晶粒尺寸较大的铁绿颜料相比于晶粒尺寸较小的铬绿颜料具有更优异的近红外反射性能,近红外反射比高0.110。三种绿色颜料对涂层红外发射率及力学综合性能的影响均较小,三种涂层的红外发射率均在0.90以上,综合力学性能均较好。近红外反射性能、近红外能量反射性能和隔热性能由高到低依次为铬绿、铁绿和钴绿涂层。结论筛选太阳光反射隔热涂层用颜料时,不应仅采用颜料的近红外反射比为衡量参数,而应权衡对应涂层的综合性能,从而对颜料筛选做出科学的判断。     

颜填料配比及颜料体积浓度对聚硫改性环氧涂层防腐性能的影响

目的 探究聚硫橡胶改性环氧树脂防腐涂层的颜填料最佳配比及临界颜料体积浓度.方法 首先固定颜料体积分数(PVC)为15％,采用磷酸锌作为防锈颜料、湿法绢云母粉作为体质颜料,以液态聚硫橡胶(LP3)改性环氧树脂(E51)作为涂层的基体,制备聚硫改性环氧防腐涂料,测试涂层的基本物理性能.分别利用金相显微镜和扫描电镜(SEM)...     

涂料用铝粉的表面改性研究进展

铝粉作为重要的金属颜料之一,当其用于水性涂料时,易被腐蚀而逐渐失去金属光泽,因此需要对其进行表面改性。目前的表面改性方法主要有添加缓蚀剂法和包覆膜法,较多的是添加缓蚀剂来保护铝颜料,而包覆膜法对铝颜料能起到更好的保护作用,被认为是一种较有发展前景的方法。本文对铝颜料表面改性机理及改性方法的研究进展进行了介绍,指出了目前改性方法中存在的不足,并提出了改进措施。     

故宫大高玄殿古建筑群多层彩画颜料成分研究

目的首次对世界文化遗产——故宫大高玄殿古建筑群彩画颜料进行分析,以期为修缮前彩画颜料历史信息的提取、档案的建立,彩画制作年代的判断,彩画的修缮提供依据。方法通过偏光显微镜(PLM)、扫描电子显微镜-能谱仪(SEM-EDS)、拉曼光谱仪(Raman)等手段对大高玄殿多层彩画的颜料样品进行综合分析测试。结果得到树脂包覆多层颜料封样的剖面结构照片,偏光显微镜和SEM得到5个样品共12层颜料的颗粒形貌特征,通过SEM-EDS测得各颜料中的元素及含量,拉曼光谱测得颜料的谱峰位置信息。多种手段相互补充和佐证,综合得出多层彩画样品各层颜料成分。结论彩画绿色颜料主要含有氯铜矿、孔雀石、橄榄铜矿、巴黎绿,蓝色颜料主要含有蓝铜矿和群青,红色颜料主要含有铁红、朱砂、铅丹,黑色颜料含有炭黑,白色颜料含有方解石。内层一般是传统颜料,而外层发现了合成群青、巴黎绿等近代颜料。     

云母薄片表面TiO2沉积的结晶过程

在稀钛盐溶液催化水解制造云母钛珠光颜料工艺过程中,水合TiO_2粒子大小的控制是控制整个颜料片TiO_2包覆薄层几何厚度的关键.酸性的钛盐溶液在水解初期会形成大量的3～15nm的微结晶,即所谓“自生晶种”,并在金属和酸根离子的作用下加速汇聚,形成水合二氧化钛粒子,晶种的质量不仅直接关系到二氧化钛多晶膜的厚度,     

太阳热反射隔热彩色涂料的制备及隔热性能

目的从色彩三原色理论出发,制备隔热性能优异的太阳热反射隔热彩色涂料。方法将复合钛红、钴蓝、钛铬黄、镍钛黄和铬绿颜料复配为颜料,硅溶胶偶联苯丙复合乳液为成膜基料,制备了紫色、蓝色、橙色和绿色太阳热反射隔热彩色涂料。用扫描电子显微镜和电子探针对颜料微观结构和元素进行定量检测,用紫外/可见/近红外分光光度计探究颜料的反射特性、涂膜反射特性和污染处理后涂膜太阳光反射比降低率。分别从涂膜试板背面隔热温差和涂膜试板对箱体中心的辐射热流降低率两个方面,衡量太阳热反射隔热彩色涂料的隔热效果。结果紫色、蓝色、橙色和绿色4种太阳热反射隔热彩色涂膜的太阳光反射比均在0.5000以上,分别为0.6287、0.5433、0.7594和0.6991,涂膜污染后的太阳光反射比降低率均满足相关标准≤15%的要求。涂膜试板背面隔热温差均在3℃以上,涂膜试板对箱体中心的辐射热流降低率均在10%以上,隔热降温性能显著。结论采用色彩三原色理论选择合适的红外反射颜料,可制备出隔热性能优异的太阳热反射隔热彩色涂料。     

The Production of Coloured Anodic Films without the use of Dyestuffs

A full investigation has been made into the methods of obtaining coloured anodised aluminium by means of inorganic pigments and by some sealing treatments. The mechanism of absorption of inorganic pigments by the pores of the anodic film is discussed, and it is concluded that to obtain uniform colours it is necessary to control very carefully all the variables in the anodising and colouring techniques.

The majority of the colours described were subjected to both natural exposure and accelerated weathering tests, and some of the inorganic pigments were assessed by direct corrosion of coloured anodised panels in salt water. It was concluded that the most durable, light-fast pigments in the range of the present investigation are copper sulphide,§ ferric oxide, lead chromate, and prussian blue sealed in dichromate.     

Plasma-polymerized metal phthalocyanine films: Preparation,properties and morphology

Thin polymeric nickel phthalocyanine (NiPc) and lead phthalocyanine (PbPc) films were prepared by the plasma-polymerization method. The phthalocyanine ring structure was largely undisturbed by this process. Lead phthalocyanine deposited in the high RF flux density regime produced some lead particles incorporated in the film, which were confirmed by electron diffraction patterns. In general the crystallite size of plasma-polymerized phthalocyanine films was much smaller than that for the chemical vapor deposited (CVD) phthalocyanine films. Plasma-polymerized phthalocyanine films deposited on interdigitated electrodes were evaluated as sensors for oxidizing and reducing gases. They showed fast response and excellent sensitivity to ppm level concentrations of NO₂ in air.     

Synthesis and characteristics of silica-modified ZnS nanoparticles by sol–gel-hydrothermal method

Monodisperse silica-modified ZnS nanoparticles were prepared by sol–gel-hydrothermal method. XRD, XPS and FT-IR analysis results proved that there existed strong interaction between SiO₂ and ZnS. ZnS was covered with silica. The crystallinity and sizes of ZnS nanoparticles depended on the silica content, and the addition of silica could effectively suppress the growth of ZnS crystals. A considerable blue shift in the absorbing band edge significantly was observed for the silica-modified ZnS, and the blue shift became more remarkable as increase of silica content. The room temperature photoluminescence showed two UV emission peaks (at 304 and 364 nm, respectively) and a broad green peak.     

Spectroscopic investigations of copolymers incorporating various thiophene and phenylene monomers

Experimental and theoretical studies are combined in order to describe copolymers involving various thiophene and phenylene monomers (TBT). The copolymers structures are confirmed and their optical properties are examined. The incorporation of a block unit, such as biphenylene, bipyridine or anthracene into the full conjugated backbone has a significant effect not only on the structural and vibrational properties of the compound but also on its optical behavior, resulting in different electronic transitions and emission colors from blue to blue-greenish and green. Therefore, a better correlation between photoluminescence and Raman vibrational modes assigned to the phonon emission is established. Theoretical studies, based mainly on density functional theory (DFT) calculations, are performed to explain the effect of the block unit incorporation in the optical property modifications. As a result, the blue shift is related to a less planar structure of the copolymer.     

Die Eigenschaften chromathaltiger und phosphathaltiger Korrosionsschutzpigmente

The properties of anti-corrosion pigments containing chromate or phosphate Chromate pigments with chemically and electro-chemically active groups such as potassium zinc chromate, strontium chromate, zinc tetroxychromate have a great practical importance as anti-corrosion pigments. Their effect is due to their chemical, electrochemical and physical behaviour, i.e. to their capacity of forming passivating cover films on metal. This happens with their application to anti-corrosion primers. When the coating is exposed to moisture, chromium ions are generated in such a quantity that an optimum corrosion protection effect can be attained without incurring the risk that other useful properties are detrimentally affected by the solubility of the chromate in water. The chemical composition and physical condition of these pigments have reached a standard to progress which meets all the requirements for practical applications. Practical importance as an anti-corrosion pigment also attaches to phosphate pigments, especially zinc phosphate, if these are combined with suitable binders and if the fillers are carefully selected. The chemical behaviour of phosphate pigments is characterized by hydratation, when secondary products are formed which give rise to passivating metal phosphate films.     

Novel `synthetic metals' based on symmetrically tetrasubstituted nickel phthalocyanines

Nickel(II) 2,9,16,23-tetrasubstituted phthalocyanines, NiPTX (where X=–OH, –NO₂, –NH₂ and –SO₃H) were synthesized in pure state and doped with iodine. Elemental analysis, UV-Vis, infrared, X-ray diffraction, magnetic susceptibility and TGA studies were used to investigate the effects of iodine doping as well as substituents on the properties of the complexes. The electrical conductivity of nickel phthalocyanine derivatives found to depend on the nature of the substituents and showed ∼10³–10⁵ times increased electrical conductivity in comparison to parent nickel phthalocyanine. Further, the substitution and iodine doping show remarkably very high improved electrical conductivity nearly 10¹¹ times the electrical conductivity of nickel phthalocyanine.     

三维立体显示用 Yb~(3+)/Ho~(3+)/Tm~(3+)掺杂铝硅酸盐微晶玻璃(英文)

制备了一种Ho3+/Tm3+/Yb3+共掺铝硅酸盐微晶玻璃。研究了玻璃基质的吸收光谱和上转换发光光谱,分析了上转换发光机制。发现:在975nmLD激发下,可同时观察到明显的蓝光(476nm)、绿光(544nm)和红光(656nm)上转换发光。同未热处理的玻璃相比,处理后的微晶玻璃的蓝光、绿光和红光的发光强度分别增加了41.1、7.0和0.6倍。比对色坐标发现:微晶玻璃的色坐标CIE-x=0.520,CIE-y=0.360,而未热处理玻璃的色坐标CIE-x=0.284,CIE-y=0.327。上转换发光基质分析表明,上转换蓝光是Tm3+的三光子吸收过程,上转换绿光和红光是Ho3+的双光子吸收过程。这一系列的结果表明,Ho3+/Tm3+/Yb3+共掺铝硅酸盐玻璃可能对三维立体显示的潜在应用有所帮助。