涂料用水性聚氨酯研究进展

介绍了水性聚氨酯(WPU)涂料的主要种类和各种水性聚氨酯涂料适合应用的领域,综述了近年来市场上常用水性聚氨酯涂料合成和改性方法,分别介绍了环氧树脂改性,有机硅改性和纳米材料改性方法,对各项改性方法的特点和改性过程进行了总结,最后通过分析水性聚氨酯涂料的性能特点和应用现状,结合目前国内水性聚氨酯的发展水平,提出了未来水性聚氨酯涂料的研究方向。     

国内聚氨酯涂料的研究进展

介绍了国内聚氨酯涂料方面的最新研究,包括聚氨酯的接枝改性研究、聚氨酯的杂化改性研究、聚氨酯涂料的功能化研究、环保型聚氨酯涂料的研究等;指出了当前存在的问题,并对未来聚氨酯涂料的发展进行了展望。     

水性聚氨酯涂料的改性技术与应用进展

简述了国内外水性聚氨酯的发展历程,重点介绍了水性聚氨酯涂料在环氧树脂改性、有机硅改性、有机氟改性、丙烯酸酯改性及纳米材料改性等不同改性方法中的研究进展,概述了其在木器涂料、皮革涂饰剂、汽车涂料及纸张涂料等领域的应用,并讨论了水性聚氨酯涂料的发展方向。     

植物油改性水性聚氨酯涂料研究进展

水性聚氨酯涂料以其优异的性能和绿色环保的优势而得到大力发展。近几年,植物油改性水性聚氨酯涂料成为热门,文中综述了蓖麻油、亚麻油、以及豆油改性水性聚氨酯合成水性氨脂油涂料的研究进展,并对植物油改性水性聚氨酯涂料的未来发展进行了展望。     

蓖麻油改性环氧聚氨酯防腐蚀涂料的研制

介绍了一种蓖麻油改性的环氧聚氨酯防腐蚀涂料.以蓖麻油改性异氰酸酯预聚物和环氧树脂为基料,以价格较为低廉的滑石粉、钛白粉、沉淀硫酸钡为颜填料制备了成本较低,性能较为优异的防腐蚀涂料.检测了优化条件下制备的涂料的性能.以蓖麻油改性环氧聚氨酯防腐蚀涂料和未经蓖麻油改性的环氧聚氨酯防腐蚀涂料进行防腐蚀性能对比,蓖麻油改性环氧聚氨酯防腐蚀涂料的耐酸、碱、盐水等防腐蚀性能更好.     

改性聚氨酯涂料的研究进展

综述了醇酸树脂、丙烯酸酯、环氧树脂及有机硅树脂等材料改性聚氨酯涂料的研究方法,并简单介绍了改性后的聚氨酯涂料的特点及性能,同时对今后改性聚氨酯涂料的研究和应用发展作了展望。     

水性聚氨酯涂料复合改性研究及应用进展

综述了水性聚氨酯涂料环氧树脂改性、有机硅改性、丙烯酸酯改性、有机硅丙烯酸酯双改性、纳米材料、植物油改性这几种不同复合改性技术的特点和方法,同时介绍了水性聚氨酯涂料在木器涂料、汽车涂料、建筑涂料、防腐涂料、织物涂料等方面的应用研究进展。     

水性聚氨酯树脂在工业水性涂料中的应用进展

综述了工业用水性聚氨酯涂料的主要应用领域。主要介绍了水性聚氨酯涂料目前改性研究的现状,如防腐防锈涂料、防水涂料、防火涂料、抗外力涂料、防污涂料、新型智能化涂料等改性研究。最后,根据我国国情,阐述了水性聚氨酯涂料未来的发展方向。     

PET薄膜用水性聚氨酯涂料的改性研究

用丙烯酸乳液对水性聚氨酯进行改性,研制出用于聚对苯二甲酸乙二醇酯(PET)薄膜表面的涂料。测试了涂料黏度、固含量、玻璃化转变温度等基本性能,用红外光谱表征了水性聚氨酯、丙烯酸乳液及改性聚氨酯的结构特征,用划格法表征了改性聚氨酯和未改性聚氨酯涂层与PET板材附着力等级。结果表明:改性聚氨酯涂料的固含量较未改性相比有小幅提高;改性聚氨酯的起始分解温度为210℃,外延起始温度为373℃,与未改性相比分别提高了50℃和63℃;改性聚氨酯涂料在PET板材表面的附着力比未改性时提高了一个等级。     

单组分水性聚氨酯涂料的研究进展

从阴离子型单组分水性聚氨酯涂料、阳离子型单组分水性聚氨酯涂料和改性单组分水性聚氨酯涂料三个方面分别阐述了单组分水性聚氨酯涂料近年来的研究概况。     

硅藻土在有机合成中的开发与应用

我国硅藻土资源丰富,由于其独特的物化性能,近年来其应用范围不断得到扩展。介绍了硅藻土的应用范围,以及在国内外应用概况,拓展其在有机合成领域的应用。     

Phytic acid: nutritional aspects and analytical implications

This review provides a current summary of the literature concerning various aspects of phytic acid. These include data relative to its chemical structure and physicochemical properties, its occurrence in numerous cereals and legumes, and its role in plants. In addition, the nutritional significance of phytate with regard to its protein and mineral binding abilities, its health benefits and the methods commonly used for the analysis of phytate are discussed.     

三聚氰胺产能现状和未来发展趋势

我国已成为世界最大的三聚氰胺生产基地和出口国,在生产能力、市场需求、出口贸易方面,均处于强势地位。2015年国内三聚氰胺的需求量将达到750 kt左右,世界三聚氰胺需求量将达到1 880 kt左右;而根据全球已投产、正在建设和拟建的装置,三聚氰胺产能在2013年就将达到2 300 kt/a。随着三聚氰胺产能的不断增加,供过于求的矛盾日益突出,三聚氰胺市场价格呈现出明显下滑的态势。因此,提高资源和能源的利用率、减少污染物排放、加大下游产品的开发、实现产业链的有效延伸、推进综合利用和循环经济、建设环境友好型企业是三聚氰胺产业的发展方向。     

Chromatic adaptation in image reproduction

The factors affecting the differences in appearance between colours in original scenes and in their pictures are reviewed. These include the picture's border, its angular magnification, its luminance, the colour of its illuminant, its surround, and the extent to which it is itself perceived as an object. Different criteria of picture evaluation are needed according to the circumstances.     

面临环境挑战的化肥工业前景

分析化肥工业的三大支柱及其相关的环境挑战诸因素的关系,论述化肥工业的发展前景,指出化肥工业应面对社会并与产品生命循环概念紧密结合,实现其自身的可持续性发展,逐步扭转不景气局面.     

氯代异氰脲酸类产品的制备和应用

论述了氯代异氰脲酸类产品的制备方法以及在各个行业中的应用、国内生产现状及发展前景，并对今后此类产品的研究方向提出建议。     

A Selected Book Published by Gordon and Breach Only available in U.S.A. and Canada

Abstract

The petrochemical industry is distinguished by its dynamism and rapidity of development. Its dynamism lies in the demands it has to face, and its rapid development concerns techniques as well as far reaching and rapid changes in its industrial structures and installations. Oil and gas: its raw materials, provide the incentive for the consideration of the possibilities of its establishment in the developing countries.     

The Chemical Biology of Phosphoinositide 3‐Kinases

Since its discovery in the late 1980s, phosphoinositide 3‐kinase (PI3K), and its isoforms have arguably reached the forefront of signal transduction research. Regulation of this lipid kinase, its functions, its effectors, in short its entire signaling network, has been extensively studied. PI3K inhibitors are frequently used in biochemistry and cell biology. In addition, many pharmaceutical companies have launched drug‐discovery programs to identify modulators of PI3Ks. Despite these efforts and a fairly good knowledge of the PI3K signaling network, we still have only a rudimentary picture of the signaling dynamics of PI3K and its lipid products in space and time. It is therefore essential to create and use novel biological and chemical tools to manipulate the phosphoinositide signaling network with spatial and temporal resolution. In this review, we discuss the current and potential future tools that are available and necessary to unravel the various functions of PI3K and its isoforms.     

CR成像扫描技术浅谈

数字化射线照相技术在医疗领域应用已比较普及,但在工业领域,由于其一次性投入成本较高、图像处理软件欠成熟、判别人员的个体化差异等因素,影响其在工业领域的应用。本文从计算机X射线照相设备的硬件及计算机X射线照相法(CR)的工作机理、技术优势和局限性方面对CR技术进行探讨,希望能推动该技术在工业检测方面应用的深度和广度。