陶瓷颜料颜色与结构的关系

分析了陶瓷颜料的结构与颜色之间的关系，讨论了颜料颜色的形成、表征及类型，并叙述了影响陶瓷颜料性能的因素。     

陶瓷颜料颜色与结构的关系

分析了陶瓷颜料的结构与颜色之间的关系，讨论了颜料颜色的形成，表征及类型，并叙述了影响陶瓷颜料性能的因素。     

陶瓷颜料的研究现状与进展

本文介绍了几种陶瓷颜料的新品种和新制备技术，如：超声-共沉淀、共沉淀-水热、微波溶胶凝胶、微波水热、微乳液-水热、自蔓延燃烧-水热技术等；简单讨论了陶瓷颜料的颜色性能与微观形貌结构的关系，指出研究颜料的微观形貌结构与颜色性能研究将是陶瓷颜料发展的新方向。     

红色陶瓷颜料的研究和发展

本文从陶瓷颜料的发展现状、颜料性能，呈色机理及呈色的影响因素等方面全面讨论了现有的几种比较流行的红色陶瓷颜料以及开发出来的最 新红色陶瓷颜料。并通过对这几种红色陶瓷颜料的合成方法的研究和结构的探讨，提出了开发新型红色陶瓷颜料的新途径。     

日用陶瓷颜料色度测量方法的研究

本研究主要采用国际照明委员会（ＣＩＥ）推荐的色度规定和测色方法，对影响陶瓷颜料颜色测量的诸因素做了分析和研究，最终确定了陶瓷颜料颜色测量和表征的最佳方法。     

湿化学法制备陶瓷颜料的现状与发展

本文主要论述了用化学共沉淀法和溶胶-凝胶法等湿化学法制备陶瓷颜料。文中不仅阐述了化学共沉淀法、溶胶-凝胶法等制备陶瓷颜料的工艺原理,也讨论了影响陶瓷颜料性能的工艺因素,文中还展望了湿化学法制备陶瓷颜料的发展方向。     

Cr—Sn红陶瓷颜料质量分析

通过对不同C_r-S_n红陶瓷颜料进行化学组成、颗粒组成、矿物组成分析,讨论影响C_r-S_n红陶瓷颜料质量的因素,并探讨提高国产C_r-S_n红颜料质量的途径。     

硫化锌基颜料的研究

本文研究了硫化锌基颜料的形成机理、制备工艺及化学组成，利用ＸＲＤ和分光光度计测定颜料的晶相组成及光谱反射曲线，讨论了硫化锌基颜料的组成、结构和颜色之间的关系，并研究了掺杂剂的掺杂浓度和组成变化对硫化锌基颜料的性质尤其是颜色的影响。     

陶瓷颜料的颜色分析

从颜色科学的基本理论出发 ,以CIE标准色度学系统为基础 ,通过对陶瓷颜料的颜色进行定量描述及分析 ,为陶瓷颜料的颜色调配提供可靠而实用的理论依据。     

陶瓷颜料的颜色调配

依照陶瓷颜料的呈色原理及颜色光学的基本理论,探讨几种陶瓷颜料混合后颜色的反射曲线的形成,以此作为颜料颜色调配的依据,从而提高颜色调配的准确性。     

氢气纯度分析方法准确性的探讨

ONACCURACYOFANALYSISOFOFHYDROGEN1前言我公司目前应用的氢气纯度分析方法有两种,一种是爆炸反应法,另一种是焦性没食子酸吸收法。几年来,人们对两种分析方法的准确性曾有过褒贬不一的评论。这里我们也谈谈自己粗浅的观点。2爆炸法测定氢气纯度一定量的氢气样品与适量的空气之均匀混合物因反应后生成液体水而引起气体体积减少,减少的体积等于参加反应气体体积之和。其中l／3为氧气,2／3为氢气。根据氢气取样量和反应前后混气体体积之差,以及氢气在反应中的体积比例关系,可计算出样品的氢气纯度。计算公式式中：A一混…     

COMPARISON OF METHODS OF ANALYSIS OF GYPSUM1

The different analytical methods proposed for the evaluation of gypsum have been subjected to an experimental test. A combination method, consisting of a fusion with KHCO₃ and determination of CaO by KMnO₄ titration, the SO₃ by Andrews method of titration of BaCrO₄ has been found to give very reliable results with the least consumption of time.     

SEDIMENTATION OF BINARY MIXTURES OF PARTICLES OF UNEQUAL DENSITIES AND OF DIFFERENT SIZES

A model is developed for the sedimentation from a suspension of two particle species of unequal densities and of different sizes. The composition and the thickness of various layers in the sediments are predicted using graphical and analytical methods. The model predictions were in excellent agreement with experimental results, when the particle size ratio was ≥ 108. When size ratio of the particles was 2.60 and 4.31 the agreement occurred in about 50 percent of the cases.     

HEASUREHENT OF INSTANTANEOUS RATES OF LOSS OF VOIATILE COMPOUNDS DURING DRYING OF DROPS

A novel technique serves to monitor instantaneous rates of loss of a volatile solute from a suspended drop during drying. A highly sensitive electron capture detector is used to monitor concentrations of SF6 released into a flowing gas stream from a suspended, drying drop. Simultaneously, the appearance and morphological development of the drop are monitored with a video camera. This provides the wherewithal of relating instantaneous rates of loss of the volatile solute to particular events during the development of particle morphology.

Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology.     

茶多酚提取方法进展

本文综述了国内外现有茶多酚提取方法的现状以及近期的研究进展，并对其优缺点进行了评价。这将有助于中低档茶的综合利用和茶多酚的进一步开发应用。     

几种针状焦性能对比

针状焦分石油系和煤系两大类,这主要取决于针状焦的原料来源。在同一系列中由于原料不同和工艺条件不同 ,针状焦的各自性能也不相同。针状焦是生产超高功率石墨电极和高功率石墨电极的主要原料 ,针状焦的性能对石墨电极的质量有至关重要的影响。所以对针状焦性能以及其对石墨电极质量影响的研究十分必要的。以下是常用的几种进口针状焦和国产针状焦的性能对比。１原料性能分析对比原料试样包括４种针状焦 ,其中两种为进口针状焦：三菱针状焦和新日化针状焦;另两种为国产针状焦：鞍山针状焦和锦州针状焦。其中除锦州针状焦是石油系针状焦外…     

ANALYSIS OF RECENT MEASUREMENTS OF THE VISCOSITY OF GLASSES

Viscosity of Simple Soda-Silicate 500° to 1400°C Comparison of the results given by English with those of Washburn, Shelton and Libman, indicates a discrepancy in the absolute values of log₁₀ viscosity amounting to 0.6, those of Washburn et al., being relatively too high. If correction for this is made, the isothermal curves of log₁₀ viscosity as a function of soda content are smooth up to 50% Na₂O, showing no inflection. The observations as a function of temperature T are all represented within accidental error by an equation of the type where all three constants vary regularly with the composition. Change of Viscosity of Glass (6SiO₂, 2Na₂O) due to Molecular Substitution of CaO, MgO and Al₂O₃ for Na₂O The effect is clearly brought out by plotting (from the results of English) the change of log₁₀η due to the substitution as a function of temperature. The curves each show a sharp bend at a temperature between 840° and 1050°C, which is designated the aggregation temperature T_a. If we divide these curves by the corresponding percentage substituted, we get curves for each oxide which are straight and parallel below the aggregation temperatures, the slopes (increase of change of log₁₀η per 100°C) being −0.056 (CaO), −0.055 (MgO), −0.018 (A1₂O₃) per per cent oxide substituted. For substitution of 1/2 molecule the slopes are −0.325 (CaO), −0.23 (MgO) and −0.18 (Al₂O₃) per 100°. At the aggregation temperature the change of log₁₀η per per cent is a minimum, 0.03 to 0.06 for CaO, 0.12 for MgO, 0.07 for Al₂O₃. Evidence of Aggregation in Glasses, from viscosity Measurements The sharp bends in the plots of change of log₁₀η due to substitution of an oxide for Na₂O, suggest the beginning of molecular aggregation at these temperatures. These aggregation temperatures are close to the devitrification temperatures, but the effect on the viscosity curves cannot be due to actual devitrification since it does not change with time. Taking the aggregation temperatures as equal to devitrification temperatures, additional isotherms are roughly sketched into the equilibrium triangle of the system Na₂O-CaO-SiO₂. Change of Viscosity of Glass (4SiO₂, 2Na₂O) due to of Substitution of B₂O₃ for SiO₂ The change of log₁₀η (from the results of English) is plotted as a function of temperature, and also the change of log₁₀η per per cent B₂O₃. The curves are more complex than for the substitution for Na₂O.     

环氧树脂羟基值测定方法的研究

利用乙酸酐、吡啶和浓硫酸混合的乙酰化试剂测定环氧树脂中羟基值含量的方法具有操作简便、滴定终点明显和分析结果误差小等优点。     

骑式摩托车油箱喷涂工艺的改进

面对日益激烈的市场竞争,摩托车油箱外观质量越来越成为影响销售的因素之一。文章介绍了改进工艺后的油箱涂装,该涂装体系提高了油箱外观的丰满度,降低了油箱涂装的生产成本。     

聚酰亚胺的合成法

本文评述了缩聚型聚酰亚胺的主要合成方法和近年来国际上在合成中所做的探索。