钒—锆蓝陶瓷色料的制备及其性能

本文论述了锆基陶瓷色料的制备工艺过程,矿化剂的作用机理以及着色离子在ＺｒＳｉＯ４晶体结构中的价态、取位。为获得性能稳定、呈色效果好的锆基陶瓷色料提供理论指导。     

钒—锆蓝陶瓷色料的制备及其性能

论述了锆基陶瓷色料的制备工艺过程,矿化剂的作用机理以及着色离子在ＺｒＳｉＯ４晶体结构中的价态,取位运行为获得性能稳定、呈色效果好的锆基陶瓷色料提供理论指导。     

锆基陶瓷色料的制备及其性能

文章论述了锆基陶瓷色料的制备工艺过程，矿化剂的作用机理以及着色离子在ＺｒＳｉＯ４晶体结构中的价态、取位，为获得性能稳定、呈色效果好的锆基陶瓷色料提供了理论指导。     

陶瓷包裹色料的研究与发展概述

锆基包裹色料是一种重要且应用广泛的陶瓷中高温色料,主要有大红CdS_xSe1_(-x)@ZrSiO_4、铁红(Fe_2O_3@ZrSiO_4)与灰黑色CB@ZrSiO_4三类色料。锆基包裹色料的制备方法主要有固相法、化学共沉淀法、水热法、Sol-gel法与微乳液法等方法。随着陶瓷装饰领域技术进步和喷墨打印技术的发展,锆基色料已经逐步在向超细化、喷墨化和高档化方向发展。     

如何提高钒锆兰产品质量

锆基三原色之一的钒锆兰色料,以其较高的热、化学稳定性及着色能力强,能和大多数的陶瓷色料混合制成复合色的特点而成为市场上最受欢迎的色料品种之一。从生产的角度来讲．钒锆兰色料是锆基色料中比较复杂的一种,它主要涉及到钒离子的变价效应,以及引入着色剂的钒化合物形式等方面。此外烧成制度和窑内气氛控制也十分重要,     

专利信息

一种钒锆蓝陶瓷色料的制备方法本发明公开一种钒锆蓝陶瓷色料的制备方法。本发明方法以硝酸锆和二氧化硅分别为锆原料和硅原料,以乙酸铵等作为有机燃烧剂。以五氧化二钒、偏钒酸铵等为钒原料,以氯化钠、氟化钠、氟硅酸钠为复合矿化剂,通过燃烧合成和煅烧工艺,得到钒锆蓝陶瓷色料。该法的优点是生产工艺过程简单、设备要求低,容易实现工业化生产。     

影响锆镨黄质量的因素及控制方法

任何一种色料要得到广泛的应用,必须具备两个基本条件：一是呈色稳定性好;二是呈色能力强。锆镨黄色料呈色鲜明,在加入量极少的情况下,可获得柔和色调,通过锆基三原色(锆镨黄、钒锆兰、锆铁红)可以制得一系列的调和色,所以它是市场上销售量极好的色料品种之一。目前,许多陶瓷色料-厂都努力研究如何制备呈色能力强、色调纯正、成本低廉的镨黄色料,其中最重要的是保证其品质的稳定性。现就锆镨黄色料生产过程中影响其质量的一些因素,提出一些控制办法。     

陶瓷色料的开发

许多陶瓷工作者都在努力降低颜料成本，节约能耗，创造更好的经济效益，开发出更具市场竞争力的色料。现就开发低成本、高质量的产品提出看法供参考。1 用锆英砂直接合成锆系色料目前，大多厂家使用的锆系色料都是石英和二氧化锆合成，而ZrO2价格昂贵，如以便宜的锆英砂为原料，经碱熔（NaOH+KOH）、酸（HCl,H2SO4）处理后再合成锆系色料，可降低成本。但该工艺较为复杂。此外还可以用中科院力学所生产的等离子分解锆英石———PDZ,这种廉价原料可代替SiO2和ZrO2直接合成锆基颜料。2用原料的半成品直接合成色料如用草酸钴代替价高的…     

硅酸锆基三元色料的混色问题研究

陶瓷色料混色能够在一定程度上解决高温陶瓷色料的色彩匮乏问题,但混色问题缺乏系统的研究。本文选择包裹红、锆镨黄、钒锆蓝三种硅酸锆基色料进行混色问题研究。结果表明:色料的混色能够丰富高温颜色的种类。混色机理是三种色料反射不同波长的可见光后产生的协同作用,且对混色的影响是相互独立的。包裹红色料会使混色的L*值减小,a*值增大;锆镨黄色料会使混色的L*值和b*值减小,a*值增大;钒锆蓝色料会使混色的a*值和b*值减小。     

锆英石系无机色料的工业搭烧

为了降低锆英石系色料的使用成本,可通过在低温快烧陶瓷辊道窑生产线冷却段预留孔进行色料的搭烧,利用通用色差仪对所得产品进行色调测定,并调整配方和工艺,试验结果表明,以钒锆蓝为例,当复合矿化剂添加量质量分数为14%,烧成温度为950℃并恒温2h,烧成气氛为弱还原性时,能够合成发色纯正的锆英石系无机色料,这也为锆英石系无机色料工业性生产提供了另一条生产途径。     

Study of the anticorrosive efficiency of zincite and periclase-based core–shell pigments in organic coatings

The objective of this work was to identify the anticorrosive efficiency of synthesized, MeO/core pigments and of MeO pigments (MeO = ZnO, MgO) with varied morphology of particles. The synthesized MeO-type pigments displayed varied particle morphologies and the MeO/core core–shell pigments exhibited surface of particles made of zincite and periclase. These core–shell pigments have the properties of both the ZnO layer and of the core (wollastonite or graphite). Epoxy-ester based coatings containing the synthesized pigments were also formulated. To test the anticorrosion properties of the coatings, accelerated corrosion tests were carried out in the environment of condensed water, of NaCl mist, and of condensing water and SO₂. The synthesized core–shell pigments have good anticorrosion efficiency in an epoxy-ester coating.     

黏土矿物基无机杂化颜料研究进展

近年来,无机杂化颜料成为无机颜料领域的研究热点之一。黏土矿物是储量丰富、廉价易得的天然纳米物质,因具有独特的纳米片状、棒状和管状结构,成为构筑各种无机杂化颜料的理想基体材料。本文介绍了黏土矿物的结构特点,综述了黏土矿物基钴蓝、铋黄、铁红和其它色系杂化颜料的研究和应用进展,展望了黏土矿物基无机杂化颜料的未来发展方向。     

A Review of Pigments Derived from Marine Natural Products

Since the early 20th century, a number of active natural pigments have been identified from marine sources, especially algae and marine microorganisms. This review presents 81 marine pigments, covering over 90 % known natural marine pigments. The objective of this article is to provide an overview on the types of pigments, their structural characterization, origins and biological functions that make them unique. We divide the major categories of pigments by chemical structure, either as carotenoids, indole derivatives (quinones and violacein), alkaloids (prodiginines and tambjamines), polyenes, macrolides, peptides, or terpenoids. Many of these pigments have a variety of biological activities, including antitumor, antibacterial, antioxidant and anti‐inflammatory. In addition, we discuss the development of biotechnology, and the contribution and utilization of marine natural pigments and the potential applications in the field of pharmaceutical research.     

Influence of crystal size of Yellow 13-type pigments on optical and rheological properties of lithographic inks

Use of a modern diffractometer and detailed knowledge of the crystal lattice structure have improved ability to size crystals of CI Pigment Yellow 13-type pigments. This has enabled confirmation and refinement of correlations observed in earlier work between crystal sizes and optical and rheological properties of commercially available pigments in lithographic inks. The correlations indicate that the dispersion procedures used have produced inks in which the pigments exist substantially as individually dispersed crystals. The correlations also indicate that the crystals of the commercially available pigments are effectively perfect. An alternative explanation on the basis that the various pigments have similar degrees of aggregation and imperfection of crystals is also possible, but improbable due to the widely different compositions and sources of the pigments. Whether or not abietyl resin added to improve dispersibility of pigment remains on the crystal surfaces in inks has not been resolved.     

有机颜料取代有毒重金属彩色颜料

含有有毒重金属的无机颜料取代有毒重因对人类健康构成严重危害,因而受到健康安全和环境保护法规的严格限制。国外通过“正确调整”思路改进和全新的有机颜料,很好地解决了性能／成本平衡,从而有效地取代了部分黄色,橙色和红色有毒无机彩色颜料。     

还原染料类颜料及其颜料化技术

本文对还原染料类颜料特点、重要品种及合成工艺进行了讨论，较系统地论述了该类型颜料的颜料化方法，重点介绍了各种不同的颜料表面改性处理技术的新进展。     

Pigments anthraquinoniques contenant le groupement phényl-1,3,5-triazinique: Nuances et solidités

Fourteen pigments based on 2,4-diamino-bis(anthraquinonylamino)-6-phenyl-1,3,5-triazine with chloro, methyl and methoxy substituents on the phenyl ring and with methyl or benzoylamino groups on one or both anthraquinone nuclei have been prepared. The shades of the pigments in PVC films using the CIE system of tri-stimulus values are described and the fastness properties of the pigments have been evaluated in PVC films, oil paints and baking enamels using visual assessment of colour changes. It was found that the type and the position of the substituents have a significant affect on the shade and fastness properties of the pigments studied. Benzoylamino groups and unsymmetrical substitution also have an unfavourable influence on fastness to solvents. Some other possible factors are discussed.     

有铅与无毒金红粉彩颜料性能之比较

采用SEM、EDS及色度、光泽度测定等分析方法对有铅和无毒金红粉彩颜料的性能进行了比较。结果表明:无毒金红颜料彩烤后与釉层结合良好不开裂,光泽度与外观呈色基本能达到含铅金红粉彩颜料的效果,可以应用于实际生产。     

Ion-exchange pigments in primer paints for anticorrosive protection of steel in atmospheric service: Cation-exchange pigments

Hexavalent chromium compounds (chromates) have been widely used as inhibitor pigments in the formulation of anticorrosive primers. However, their high toxicity and carcinogenic effects are forcing the development of effective chromate-free organic coatings. One such alternative is the use of ion-exchangeable pigments. Studies of these pigments have not been conclusive about their anticorrosive efficiency and controversy surrounds their functional mechanisms, exchange capacity and anticorrosive performance.     

Polymer‐ and wax‐based monoconcentrate predispersed pigments in the colouring of plastics

Over the past few decades, masterbatch production has been increasing year by year. Pigments are used primarily in masterbatches because of their ability to impart colour or opacity to a matrix. The effectiveness of pigments depends not only on their intrinsic ability to absorb or scatter light, but also, importantly, on the dispersiblity and distribution of the pigments that can be achieved in plastics. Nowadays, stringent environmental as well as excellent quality controls are making inevitable the use of non‐dusty monoconcentrated predispersed pigments for the production of masterbatches for the colouring of plastics. Commercially, for the most part, two types of monoconcentrated predispersed pigments are being used for the colouring of thermoplastic masterbatches. These are polymer‐ and wax‐based predispersed pigments. This study has been undertaken to provide a comparison of the colouring properties of polymer‐ and wax‐based monoconcentrated predispersed pigments. Four commercially used organic pigments have been selected. Both types of monoconcentrate predispersed pigments have been developed on a co‐rotating twin‐screw compounding extruder with a length/diameter ratio of 44. A detailed analysis on the comparison of the colouring properties is presented. Results indicate that good colour properties are achieved when operating conditions are optimised.