金红石型包膜钛白在涂料中的应用

介绍了金红石型包膜钛白的质量及其在不同涂料中的应用。结果证明，使用Ｒ－９３０钛白包膜量４０％的产品，取代国产钛白，能显著提高涂料的耐候性和抗粉化性；采用正确的方法，全部或大部分用Ｒ─９３０包膜钛白代替进口金红石型钛白，不会明显影响产品质量，并大幅度降低产品成本。     

超耐久型BA01—02钛白的研制

采用溶胶技术使ＢＡ０１－０１钛白不分级而直接用Ｓｎ、Ｓｂ－Ｚｒ进行无机表面处理和用改性的三乙醇受进行有机处理。所开发的ＢＡ０１－０２钛白已进行工业化生产，产品的主要性能均达到或超过国家标准ＧＢ１７０６－８８规定的ＢＡ０１－０２一级品标准。通过５００ｈ人工加速老化试验，耐侯性均明显优于Ｒ－９３０和Ｒ－９０２，实现了锐钛型钛白在使用性能上的金红石化。     

其他专用涂料

冰面用钛白涂料；激光活化热致变色组合物、薄膜或组合物；散射反射涂料组合物；浮雕金属片产品及其制备和在涂料和油墨中的应用；金属用聚芳基醚酮涂料     

2020年中国涂料工业随想录(续三)

在2020年我国可能需要的这120万吨颜（填）料中，不仅对行业，而且对国家都带有战略意义的品种是钛白。在对2020年的涂料估产为600万吨（为目前涂料总产的约四倍）的基础上，本文提出了对钛白的50万吨辟（约6倍于目前我国涂料工业8万吨辟左右的消耗量）的需求。这个消耗量是否估得大了呢？笔者的论据是，20年内，我国涂料工业对锌钡白的需求和消耗，如果不是消失的话，也会极大地减少，减少到不足论的地步。这样，加上涂料颜色风尚必然地趋向于浅淡，对钛白的需求自然飓升。前已声明，笔者对我国颜料工业（乃至于颜料这个品类本身）的了解十…     

反射隔热水包砂多彩涂料的研制

具有反射隔热效果的水包砂多彩涂料作为一种新型的节能装饰性材料,可广泛应用于建筑外墙面,特别是城市改造工程,既美化了城市,又节约了大量的能源.通过合适的工艺将红外反射钛白、热反射隔热微球和冷色浆应用于水包砂多彩涂料中,得到一种具有良好反射隔热效果的水包砂多彩仿石涂料.     

行业快讯

2012年全国钛白粉总产量约189万t据国家化工行业生产力促进中心钛白分中心对我国现有正常生产的全流程型规模以上的48家钛白生产商(59家工厂)的统计,2012年的综合产量共达188.6024万t,加上其他数家不符合正常生产条件的小企业在内,2012年全国钛白粉总产量约为189万t,同比增幅为7.7%。继     

热固性丙烯酸印铁涂料

以热固性丙烯酸树脂制备了印铁涂料。讨论了钛白、热固性丙烯酸树脂的用量、溶剂的配比、催化剂的用量对涂料性能的影响。     

市场信息

未来国内钛白领域研发重点集中在八类领域；中远国际涂料业务增长强劲升1．3倍；亨斯曼联手Alberdingk拓展地坪涂料市场;Reichhold提高北美涂料树脂价格;罗门哈斯丙烯酸酯提价     

杜邦钛白和氟碳助剂技术研讨会在京举行

日前,杜邦公司钛白科技事业部/特殊化学品事业部在北京举办Ti-Pure Ti-Select,Zonyl系列产品及新技术研讨会,在北京皇家大饭店1楼宴会厅隆重举行。杜邦钛白科技事业部亚太区涂料技术经理萧绍基博士、杜邦特殊化学品事业部氟表面防护产品技术开发经理陈俊谷博士及高级化学师周济苍博士等在技术研讨会上为国内技术工程师带来了技术应用体验及个案讨论。     

行业快讯

国家涂料质量监督检验中心成立20周年庆典,第9届氟硅涂料行业年会在北京成功召开,首届涂料用助剂培训班召开,全国钛白行业年会在云浮市举行     

复合二氧化钛负载膜降解十二烷基苯磺酸钠的研究

以玻璃珠为载体,用溶胶-凝胶法制备二氧化钍和三氧化二钕复合二氧化钛膜对水溶液中的十二烷基苯磺酸钠进行了固定相光催化氧化实验。研究了复合膜的紫外-可见光透过性能和二氧化钍与三氧化二钕的掺杂量、十二烷基苯磺酸钠水溶液的pH值等因素对光解率的影响。结果表明,二氧化钍和三氧化二钕复合二氧化钛负载膜的光催化活性显著提高且组分质量比存在最佳值。当二氧化钍与二氧化钛的质量比为0.02,三氧化二钕与二氧化钛的质量比为0.01时,最高光解率分别为同样条件下二氧化钛的2.3倍和1.6倍。     

浅谈氯化法钛白及其后处理工艺

分析了当今钛白行业的发展形势,介绍了氯化法钛白的工艺特点并与硫酸法钛白进行对比。阐述了氯化法钛白后处理的工艺流程与设备。     

环境友好氧化消毒剂二氧化氯发生技术的进展

介绍了以亚氯酸盐、氯酸盐为主要原料的二氧化氯发生技术的进展 ,重点评述以氯离子、甲醇或过氧化氢为还原剂的氯酸盐工艺。指出以过氧化氢为还原剂的二氧化氯发生方法可以从源头上减少氯气和酸性芒硝的生成 ,建议国内企业和科研机构尽快开发出具有知识产权的特色二氧化氯发生技术 ,同时制定有关二氧化氯纯度和发生器等相关标准     

Electrogenerative formation of ferric ions in a sulfur dioxide–sulfuric acid solution; Graphite catalysed sulfur dioxide oxidation

The electrogenerative oxidation of ferrous ions in 3m sulfuric acid, containing sulfur dioxide and subsequent sulfur dioxide oxidation, were studied in connection with potential regenerable sulfur dioxide remediation processes. The presence of sulfur dioxide in the feed stream did not affect cell performance. Oxidation of sulfur dioxide in the electrogenerative reactor took place when high ferrous to ferric ion conversions were obtained. Low cost graphite and iron ions served as an effective mediating system for promoting electron transfer to sulfur dioxide in strong acid solutions. In contrast, the homogenous reaction between iron(iii) and sulfur dioxide is relatively slow. In a separate batch reactor, the heterogeneous iron(iii) and sulfur dioxide reaction was found to be graphite catalysed, accounting for sulfur dioxide conversion observed in the electrogenerative reactor. Ferrous ion presence should be minimized, because it inhibits the desired catalysed reaction.     

次氯酸钠与二氧化氯联用降低消毒副产物的应用探讨

为了解决自来水厂应用二氧化氯导致的消毒副产物亚氯酸盐、氯酸盐超标问题,对亚氯酸盐生成量与二氧化氯投加量相关性进行了测定分析,开展了以次氯酸钠替代二氧化氯消毒,同时保留二氧化氯预氧化生产性实验。结果表明,亚氯酸盐生成量与二氧化氯投加量显著相关,因此,采用二氧化氯预氧化与次氯酸盐消毒联用,既保证了水质消毒效果,又使水中亚氯酸盐的浓度大幅度降低并稳定达标。     

Interfacial tension and density measurement of the system corn germ oil – carbon dioxide at low temperatures

In this article, the physical properties of corn germ oil at high pressures of up to 30 MPa and at low temperatures from ?10 °C to 22 °C are presented. We measured the interfacial tension of the commercially available corn germ oil Mazola® and of unrefined corn germ oil in contact with carbon dioxide, as well as the density of carbon dioxide‐saturated corn germ oil. The interfacial tension of refined and unrefined corn germ oil in contact with gaseous carbon dioxide at temperatures above ?10 °C depends on time, while at higher pressures the equilibrium value of the interfacial tension is reached immediately after the formation of the drops or bubbles. The interfacial tension of unrefined corn germ oil in contact with carbon dioxide is higher than the interfacial tension of refined corn germ oil. This fact is explained in this article. The interfacial tension of refined and of unrefined corn germ oil in contact with carbon dioxide decrease with rising pressure and can be described as a function of the carbon dioxide density for the examined temperature range. The density of carbon dioxide‐saturated corn germ oil is linearly dependent on pressure, with a high slope if carbon dioxide is gaseous and with a low slope if carbon dioxide is liquid.     

开发二氧化碳资源推进碳的循环利用

地球上资源有限,而二氧化碳资源十分丰富,二氧化碳在大气中的增加会产生温室效应,开发利用二氧化碳,大力发展二氧化碳产业,具有很大的资源利用和环保意义。本文对近期二氧化碳开发利用的进展作了介绍,并对如何发展二氧化碳产业提出了建议。     

Titanium dioxide grafted with silane coupling agents and its use in blue light curing ink

To improve the properties of titanium dioxide particles and realise their firm anchorage in blue light curing film, three modified titanium dioxide particles were prepared by grafting 3‐(trimethoxysilyl)propyl methacrylate, 3‐aminopropyltriethoxysilane and hexadecyltrimethoxysilane. The surface changes of titanium dioxide particles after modification were characterised. The dispersion stability, photo‐polymerisation, rheological and mechanical properties of modified titanium dioxide blue light curing inks were investigated. Results showed that compared with native titanium dioxide, modified titanium dioxide particles were more appropriate for blue light curing ink. The particle sizes of the three modified titanium dioxide particles became smaller, their surfaces exhibited hydrophobicity, and the viscosity of the modified titanium dioxide inks decreased slightly. Of the three modified titanium dioxide particles, 3‐(trimethoxysilyl)propyl methacrylate‐ and hexadecyltrimethoxysilane‐modified titanium dioxide particles exhibited better dispersion stability in blue light curing ink. In particular, 3‐(trimethoxysilyl)propyl methacrylate‐modified titanium dioxide blue light curing ink showed the best photo‐polymerisation and mechanical properties, which indicated the participation of the pigment grafted by double bonds in the blue light curable polymerisation. Using modified titanium dioxide in blue light curing ink, the dry/wet rubbing fastness of the printed fabrics improved.     

四丁基溴化铵-二氧化碳-水体系半笼水合物相平衡数据的测定

水合物相平衡数据是利用水合物捕集二氧化碳的基础数据,利用定容逐步加热的方法测量了四丁基溴化铵-二氧化碳-水三元体系水合物的相平衡数据,实验测量的压力和温度分别为1.0-4.3 MPa,282.75-292.15 K,四丁基溴化铵水溶液的质量分数为5％ -30％.实验结果表明:在一定的温度条件下,与纯水中二氧化碳水合物形...     

Viscosity measurements on saturated gas-expanded liquid systems—Ethanol and carbon dioxide

A recently developed method of falling-weight viscometry was employed to determine the experimental viscosities of the gas-expanded liquid system of ethanol and carbon dioxide at saturation. By adding carbon dioxide into an isochoric system containing metered amounts of ethanol, carbon dioxide concentrations within the gas-expanded liquid system were systematically varied between 0.15 and 0.80 mole fraction in 0.05 increments at constant system temperatures of 25, 30, 35 and 40 °C. Similar to the gas-expanded liquid system of methanol and carbon dioxide, an increase in carbon dioxide concentration in the liquid phase, liquid volume expansion, liquid density and system pressure resulted in a decrease in liquid phase viscosity. The significance of system temperature however, is more apparent with the gas-expanded liquid system of ethanol and carbon dioxide when compared to the gas-expanded liquid system of methanol and carbon dioxide. At equal compositions but varying system temperatures, not only is the viscosity of the ethanol and carbon dioxide system affected to a greater extent, the point at which viscosity reduction is insignificant with an increase in carbon dioxide composition occurs earlier with increasing system temperatures. The estimation of liquid phase viscosities of gas-expanded liquid systems is therefore difficult without experimental data.