釉上铅硼熔剂初探

本文通过测定ＰｂＯ－Ｂ２Ｏ３－ＳｉＯ２系熔剂的溶融温度和铅溶出量以及对云母钛珠光颜料的腐蚀程度，就ＰｂＯ－Ｂ２Ｏ３－ＳｉＯ２系釉上熔剂的性质做了探讨。得出：该熔剂熔融温度、铅溶出量具有一定规律，其本质是由其结构所决定。最终得到适合于云母钛珠光颜料熔剂的组成。     

三种无铅高压陶瓷电容器瓷料的研制

通过正交实验，分析讨论了Ｂｉ２Ｏ３．３ＴｉＯ２，Ｋ２ＣＯ３，ＭｇＯ等四种添加物对（Ｓｒ，Ｂａ）ＴｉＯ３基电容器瓷料性能的影响，试制了三种无铅高压电容器瓷料，耐压超过８ＫＶ／ｍｍ，主要性能均已达国际ＧＢ５５９５－８５。     

高温快烧釉中彩颜料的研究

为解决日用瓷铅镉溶出问题和提高装饰档次，研制成功１８种高温快烧颜料色基及专用熔剂。经测试，１８种颜料的各项指标全部达到国家标准要求，铅镉溶出量全部为０．０ｍｇ／ｄｍ２．     

BaTiO3系陶瓷电压非线性特性研究

对ＢａＴｉＯ３－ＢａＺｒＯ３,ＢａＴｉＯ３－ＢａＳｎＯ３,ＢａＴｉＯ３－ＳｒＴｉＯ３非线性陶瓷材料的介电性能（ε,ｔａｎδ）与外ＢａＺｒ０．１３Ｔｉ０．８７Ｏ３,ＢａＳｎ０．０６Ｔｉ０．９４Ｏ３在直流偏压下ε可变化１．５￣２．７倍;在交流电压下ε可变化２￣２．５倍,且具肮介电常数、较高抗电强度,可用作开关电源ＲＣＤ保护电路的非线性陶瓷电容器和荧光灯无触点起辉器材料,Ｂａ１－ｘＳｒｘＴｉＯ３在直流偏     

锶锆生料乳浊釉的研究

１前言近几年,ＳｒＣＯ３作为陶瓷原料已广泛用于电视机显像管、光学玻璃、新型陶瓷、铁氧体瓷、电子陶瓷Ｓｒ铁氧体和ＳｒＴｉＯ２等。作为陶瓷釉用原料的研究,在国外文献中早有报道。国内研究和应用也在不断迅速发展。笔者把ＳｒＣＯ３作为生料乳浊釉的一种熔剂,在１１４０℃～１２００℃温度内进行了探索和研究,获得了较好的釉面效果。２原材料的化学成份及釉化学组成和釉式：２．１化工原料ＳｒＣＯ３工业纯９９％纯度。ＢａＣＯ３工业纯９８％纯度。ＺｎＯ工业纯９８％纯度。２．２其它原料化学成份（表１）２．３釉组成配方范围（…     

矿物原料中主量元素的光谱化学分析

试样用（Ｎａ２ＣＯ３＋Ｂ２Ｏ３）混合熔剂熔融，熔决用ＨＣｌ与Ｈ２Ｏ２浸取，在浸取液中加入Ｋ２Ｃｒ２Ｏ７作内标，制成试样溶液，将此溶液取０．０５ｍｌ，滴到φ４的平头电极上，将溶液蒸干，用交流电弧激发，中型石英摄谱仪摄谱、测量黑度、绘制坐标轴为△Ｓ与ｌｇｃ相对应的工作曲线．方法有较高准确度，操作简易、快速．     

影响（Ba_（0．65）Pb_（0．35））TiO_3系PTC陶瓷电阻率的因素

在合成的（Ｂａ０．６５Ｐｂ０．３５）ＴｉＯ３中分别掺入了Ａｌ２Ｏ３，ＳｉＯ２，Ｌａ２Ｏ３，ＭｎＯ２和ＴｉＯ２．讨论了每种掺杂物与烧成气氛和升温制度对常温电阻率的影响，找出了ＰＴＣ陶瓷的最佳组成；１ｍｏｌ（Ｂａ０．６５Ｐｂ０．３５）ＴｉＯ３，０．００２ｍｏｌＡｌ２Ｏ３，０．００４ｍｏｌＳｉＯ２，０．０１ｍｏｌＴｉＯ２，０．００３ｍｏｌＬａ２Ｏ３，０．０００２ｍｏｌＭｎＯ２．这种ＰＴＣ陶瓷的表面温度为２７０℃，常温电阻率为５～８×１０３Ω·ｃｍ，时任性为２４０ｖ／ｍｍ．     

骨质瓷无铅熔块釉的研究

选用Ｋ２Ｏ、ＳｒＯ、Ｌｉ２Ｏ替代ＰｂＯ研制成功了骨质瓷用无铅熔块釉，基本保证了釉面的高光泽度、白度和热稳定性，又保证了使用过程中低铅镉溶出。     

均匀设计法筛选SBLC涂复料的化学配方

采用均匀设计法对ＳｒＴｉＯ３晶界层电容器（ＳＢＬＣ）的二次烧结涂复料配方进行筛选。研究了ＰｂＯ－Ｂｉ２Ｏ３－ＣＵＯ－Ｂ２Ｏ３四元体系不同配方涂复料对电容器的介电常数及损耗的影响。经回归分析得到涂复料的较优配方是：Ｐｂｏ：Ｂｉ２Ｏ３：ＣｕＯ：Ｂ２Ｏ３：８．３：５．６：１：６．３     

北京辽代琉璃器上发现硼釉的重要意义

古陶瓷科学研究最新发现距今近千年前的辽代，我国陶瓷工匠已经使用硼替代和铅作陶瓷硫璃釉的熔剂原料，这无疑填补了中国陶瓷史和中国陶瓷工艺发展史研究的空白；铅有毒，硼对人体无害，采用天然硼砂来代替铅配制低温琉璃釉在没有科学分析手段的辽代无凝是一项重大发明，北京辽代硼釉的发现证明，我国是最早发明ＳｉＯ２－Ｂ２Ｏ３－Ｒ２Ｏ（ＲＯ）系统低温釉的国家，比国外出现硼硅酸盐珐琅釉早５００多年，可是这一项古代科技成就     

釉上丝网金红色料的研究

以金元素和锡元素为主要发色剂，并加入一种低铅溶出的熔剂制得了四种高档陶瓷色料。经测试，色料的各项指标均达到标准要求。     

Moderne Druckverfahren und Druckfarben

Modern Printing Processes and Colours The important industrial printing processes of the present day and the machinery involved are briefly described. The important conditions which the printing colours have to fulfil in order to be employed in the above printing processes are mentioned and the basic structure and properties of the printing colours employed in the practice are given. A few characteristic differences between printing colours and coating materials are dealt with.     

Properties of ink‐jet printed,ultraviolet‐cured pigment prints in comparison with screen‐printed,thermo‐cured pigment prints

A collection of printed fabrics for men’s shirts was designed and prepared using computer‐aided design/computer‐aided manufacturing technology. The colours for designs were ink‐jet printed on cotton fabrics with pigments and ultraviolet‐cured. These prints represented the target colours for subsequent flat‐screen printing, which was performed using pigment printing pastes and thermal curing. For an exact transfer of colours of the ink‐jet‐printed standard into the screen‐printing process, a computer recipe prediction method was used. A comparison of colorimetric parameters of fabrics printed with both printing techniques shows minimal and acceptable differences in the CIELab colour values. A comparison of colour fastness properties proves that very good colour fastness is achieved on the pigment‐printed fabrics produced with both printing techniques. The flat‐screen‐printed fabrics show better colour fastness to washing, perspiration and rubbing, while ink‐jet‐printed fabrics show better colour fastness to dry‐cleaning and light. The fabrics printed with both printing techniques have high rigidity and non‐elastic properties. The mechanical and physical parameters are strongly dependent upon the amount of the dry substance of the printing media applied on the cotton fabric surface, which is higher on screen‐printed fabrics. The ink‐jet‐printed fabrics show better air permeability than flat‐screen‐printed fabrics.     

Na2O, K2O, SiO2 and Al2O3 release from potassic and calcic-sodic feldspars into alkaline solutions

The potential release of elements from potassic and calcic-sodic feldspars into the concrete pore solution was evaluated by ICP-MS using 1 N NaOH and KOH solutions at 80 °C in accordance with the conditions set in the chemical test method. Materials were characterized by petrography, XRD and by XRF analysis. The influence of textural and microstructural characteristics on the leaching process was also analyzed by immersing polished plates of each mineral in 1 N NaOH at 80 °C for 7 days. Optical microscope and SEM observations indicate that microstructural characteristics, such as cleavage zones, twins, grain-grain contact and the finer and less abundant phases in perthites, play a key role in the leaching process under alkaline conditions. Na₂O, K₂O, SiO₂ and Al₂O₃ are supplied by hydrolysis, although the participation of other processes cannot be ruled out.     

PU贴膜革的印刷改色

通过表面印刷方法，改变聚氨酯贴膜革的颜色，使产品改变款式，适合市场要求，阐述了印刷改色工艺。     

Methine dyes formed by condensation of indane-1, 3-dione and cyanovinyl analogues with benzaldehydes

A range of dyes has been synthesised by condensing highly electronegative active methylene compounds derived from indane-1, 3-dione with the formyl group of substituted benzaldehydes. The visible absorption spectroscopic properties of the dyes were investigated. In general the dyes provided bright colours, ranging from yellow to blue on synthetic fibres when applied by vapour-phase transfer printing, the prints having reasonable fastness to washing (ISO 3).     

Effect of substituting Na2O for SiO2 on the non-isothermal crystallization behavior of CaO-BaO-Al2O3 based mold fluxes for casting high Al steels

The non-isothermal crystallization behaviors of CaO-BaO-Al₂O₃-based mold fluxes in which SiO₂ had been replaced by Na₂O were investigated, using an infrared furnace combined with digital microscopy as well as X-ray diffraction. The initial crystallization temperatures, crystalline phases generated at different cooling rates, crystallization rates, Ozawa indices N_O (as determined using Mo's equation) and effective crystallization activation energies (as determined using the Friedman equation) were evaluated. The initial crystallization temperature increased along with the Na₂O content in the flux. In addition, the precipitation of CaF₂ crystals was inhibited while the growth of CaAl₂O₄ crystals was enhanced at Na₂O concentrations over 4?wt%. Increasing the cooling rate inhibited the precipitation of MgAl₆O₁₀, and of CaSiO₃, MgAl₂SiO₆ and NaAlSi₃O₈, respectively, in fluxes containing 0, 4 and 8?wt% Na₂O (NS1, NS2 and NS3 samples). The peak instantaneous and average crystallization rates in these specimens were increased as the Na₂O level was raised, as a direct result of changes in their N_O values. The NS1 flux consistently had the lowest N_O value, while the NS2 had the largest value in the primary stage of crystallization but the central value in the secondary stage, and the N_O values of the NS3 flux exhibited the opposite trend. The effective crystallization activation energies decreased with increasing Na₂O levels, and this was evidently an important factor affecting the initial crystallization temperature.     

OBITUARY

Book reviewed in this article: Chemistry and technology of printing and imaging systems , edited by P Gregory The primary colours , by Alexander Theroux     

无铅无镉陶瓷釉上颜料的研究

用透射和扫描电子显微镜及Ｘ－射线能谱仪研究了无铅、镉熔剂的显微结构与化学稳定性的关系，分析了影响熔剂化学稳定性及热膨胀性能的各种因素，探讨了各种不同熔剂对颜料呈色性能的影响，较好地解决了无铅无镉颜料的技术难题。