Glassy State Lead Tellurite Nanobelts: Synthesis and Properties

The lead tellurite nanobelts have been first synthesized in the composite molten salts (KNO₃/LiNO₃) method, which is cost-effective, one-step, easy to control, and performed at low-temperature and in ambient atmosphere. Scanning electron microscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectrum, energy dispersive X-ray spectroscopy and FT-IR spectrum are used to characterize the structure, morphology, and composition of the samples. The results show that the as-synthesized products are amorphous and glassy nanobelts with widths of 200–300 nm and lengths up to tens of microns and the atomic ratio of Pb:Te:O is close to 1:1.5:4. Thermo-gravimetric analysis (TGA) and differential scanning calorimetry (DSC) and investigations of the corresponding structure and morphology change confirm that the nanobelts have low glass transition temperature and thermal stability. Optical diffuse reflectance spectrum indicates that the lead tellurite nanobelts have two optical gaps at ca. 3.72 eV and 4.12 eV. Photoluminescence (PL) spectrum and fluorescence imaging of the products exhibit a blue emission (round 480 nm).     

玻璃中内含凝结物气泡产生的工艺分析

针对某条浮法玻璃生产线玻璃出现气泡的问题,对气泡进行了显微镜观察,发现气泡内壁上附有凝结物,通过对内壁凝结物成分检测,确定其主要为Na2SO4.通过对气泡出现前后熔窑小炉烟气的检测,分析气泡产生的原因为更换燃料后窑炉气氛中的SO2增高,导致玻璃中保留的硫酸盐过量所致.     

阳极的状态在颜色上的反映

1　前言在电镀生产中 ,阳极的状态对正常生产的影响是很大的。而阳极的状态在阳极板的颜色上能够反映出来 ,所以通过观察阳极的颜色也能发现电镀生产中的一些问题所在。本文根据经验与专业知识得出的一点体会 ,供同行探讨。2　镀低锡青铜阳极的颜色2 .1　铜锡合金阳极呈现黑灰色此时阳极的电流密度低于正常工艺值 ,阳极上发生如下反应 :Ｓｎ - 2ｅＳｎ2 +Ｃｕ -ｅＣｕ+Ｓｎ2 +对于镀液来说是非常有害的。当镀液中Ｓｎ2 +浓度达到一定程度就会在阴极镀件上反映出来 ,镀层质量不好 ,发黑、有瘤 ,抛光时发乌 ,不好抛。发现阳极呈现黑灰色必须采…     

新型橡胶填料--空心玻璃微珠

空心玻璃微珠对我国橡胶工业而言，还是一种新填料。研究空心玻璃微珠的表面特性和表面处理效果，探讨了空心微珠在炭黑增强橡胶中的应用。结果表明：空心玻璃微珠表面的羟基含量很低，含水量很小，不利于进行改性程度高的表面处理。空心玻璃微珠的粒径有一定的分布。使用硅烷偶联剂进行表面处理后，能够使微珠的表面由亲水变为亲油，并在一定程度上提高其补强性能。空心微珠可以在完全不改变原有配方的基础上，进行较大量填充。单独使用不如与炭黑、白炭黑并用，复合材料的主要优势在于：成本较大幅度地下降，各项力学性能保持较好，随微珠用量的增加，加工性能和产品的外观进一步改善。     

A New Low-Brittleness Glass in the Soda-Lime-Silica Glass Family

In the soda-lime-silica glass family, the effect of each constituent of the composition on the brittleness was first investigated. Vickers indentation was employed to estimate the brittleness (ratio of harness ( H ) to fracture toughness ( K _c)) by measuring the C / a ratios (where C and a are the characteristic crack and indentation diagonal lengths, respectively). It was observed that a higher silica content and a lower lime content helped to lower the brittleness. Substitution of potash and magnesia for soda and calcia, respectively, was effective in lowering the brittleness. From these results, a higher molar volume was found to be a key factor for reducing the brittleness. A new low-brittleness glass was then developed with a brittleness as low as 5.1 µm^-1/2 as compared with the brittleness of 7.1 µm^-1/2 for commercial soda-lime-silica glass. The crack initiation load ( P *), measured by the Vickers indentation method, for this new low-brittleness glass was almost 10 times as high as P * of commercial soda-lime-silica glass. The new glass shows lower hardness and higher fracture toughness than the commercial soda-lime-silica glass.     

A New Insight to the Color Change Phenomenon of TATB: Structural Color

The color change phenomenon of 1,3,5‐triamino‐2,4,6‐trinitrobenzene (TATB) has puzzled the energetic researchers for decades. Many efforts have been dedicated to identifying the “colored TATB”, however, hardly any of well‐established evidences have been ascertained. After detailed reviewing the literatures, we herein propose a new insight to survey the coloration of TATB. And a 3D photonic crystal model has been proposed to elucidate the color change phenomenon of TATB. Coloration behavior of the TATB is confirmed by home‐made TATB thin film. It is proved that the coloration of TATB is a physical appearance, structural color.     

State Scientific-Research Institute of Glass

Glass and Ceramics -     

一种新型凝液回收工艺技术研究与应用

长庆油田存在丰富的伴生气资源,为了提高油田小规模伴生气综合利用水平,开展了新型凝液回收工艺技术(产品为混烃)研究工作,并依托工程进行了应用设计,装置已投产且进行了多工况的运行考核,指标均达到预期要求。     

我国玻璃幕墙发展现状及趋势

我国玻璃幕墙发展经历、玻璃幕墙的种类和产用量情况,分析了对玻璃幕墙的要求,并提出了玻璃幕墙的发展趋势。     

Color and Spectral Transmittance of Amber Bottle Glass

Because of increased interest in color uniformity among iron-sulfur amber bottle glasses, a study was undertaken of their color, their spectral transmittance, and the relationship of these properties. It was found that the psychophysical attributes of color (C.I.E. system) as computed from complete light-transmittance spectra can actually be estimated for iron-sulfur amber glasses with good accuracy from transmittance at only two suitable wave lengths, 550 and 650 mp. Transmittance at 550 mμ is closely correlated with brightness (C.I.E.) and thus is sufficient to characterize color intensity, which is the most important variable of color quality among commercial amber glasses. There is also fair correlation between transmittance at 550 mμ and transmittance in the ultraviolet. The latter is important in the avoidance of photochemical action on bottled products. Incidental to this work, the transmittances of a large number of glasses were compared with their iron and sulfur contents. Broadly speaking, it was found that transmittance at 550 mp decreases with increasing ferrous iron or with increasing sulfide content. However, this transmittance is affected substantially by other factors, such as gross composition, minor constituents like fluorine, and thermal history, of which no account was taken in the present work. Transmittance at 1050 mp can be correlated closely with ferrous iron content (as determined by chemical analysis) and absorbancy per unit concentration of ferrous iron in carbon-sulfur ambers is about the same as in green glasses containing no sulfur.     

新型精密模压用无氟磷酸盐玻璃

通过一系列有效的组分调节,研制出一种无氟磷酸盐玻璃来替代原美国专利上提出的精密模压用含氟磷酸盐玻璃。性能测试表明：这种无氟磷酸盐玻璃在保持 一定化学稳定性的基础上,不仅比原含氟磷酸盐具有更低的玻璃转变温度,而且还具有含氟磷酸盐玻璃所没有的相当好的耐辐照性能。     

价层电子与无机物颜色的相关规律

无机物的颜色与其内部结构密切相关,文章从原子结构和分子结构理论的角度,分析了金属、非金属单质及其化合物的结构,重点讨论了其所含原子、分子或离子中价层电子与无机物呈色的关系,并归纳了无机物价层电子结构与颜色之间的相关规律。     

新型立交分片机

传统分片机结构复杂,设备笨重,响应缓慢,安装和维修困难。新型立交分片机由输送结构和升降机构两部分组成,结构简单,升降灵活,响应快速,安装维修方便。其更换同步带的新结构,解决了同步带更换难题。同时,通过设置连体式曲柄连杆机构,使升降功能更加简单稳定。     

行业动态

玻璃物理性能测量与生产控制系统正式发布 为了方便玻璃生产企业及时调整控制生产,提高产品质量,由厦门灵捷软件有限公司和北京京海泉传感科技有限公司联合开发的＂玻璃物理性能测量与生产控制系统＂（英文Glass Properties Measurement and production Control System,简称GPMCS）,已经正式发布,该系统广泛应用于各种无机玻璃、搪瓷、釉料的生产检测与工艺控制。     

俄罗斯的玻璃生产状况与发展前景

介绍了俄罗斯玻璃工业近几年的状况和在世界生产及贸易中所占的份额,指出并分析了存在的问题,对未来前景进行了展望。     

抗菌玻璃的研究现状(连载二)

介绍了抗菌玻璃的研究现状.从玻璃的制备方法和玻璃的特点的角度,对抗菌玻璃进行了分类,并以此为基础介绍了抗菌玻璃的应用领域.