环氧树脂在涂料方面的应用

简要介绍了环氧树脂的定义、结构及其在防腐蚀领域中的优缺点,并对环氧树脂在防腐涂料领域的应用状况作了简要的概述。同时对环氧树脂材料在使用时出现的一些问题做了简要总结,并对其前景进行了展望。     

现代仪器的重大进展

本文简要介绍智能仪器的基本组成、特点和原理，对智能仪器的应用领域作简要概括，并对其今后的发展趋势作简要探讨。同时，简单介绍虚拟仪器的体系结构，全面的介绍了虚拟仪器设计技术。     

三氟甲苯系列产品市场发展前景

介绍了三氟甲苯系列产品的种类及市场发展概况,对其合成技术作了简要的介绍并对其发展前景作了分析。     

无机陶瓷膜在水处理中应用研究综述

对无机陶瓷膜分离技术进行简要剖析,从结构、特点、分离原理等方面分析其具有优良分离性能的原因,并对其在各领域的应用研究及进展进行了简要介绍。最后,对无机陶瓷膜技术在水处理中存在问题及未来发展趋势进行了讨论。     

酚醛胶泥的配制及应用

本文讨论了酚醛树脂胶泥中各组份对其性能的影响,对其配制作了较详细的介绍,并简要叙述了使用情况。     

超分散剂的研究及应用现状

超分散剂是近几年来发展起来的一种新型聚合物型分散剂,日益受到重视。本文以超分散剂的应用现状为主线,简要回顾了近几年来超分散剂的研究进展,并对其发展前景进行了简要展望。     

阿魏酸的制备及在食品工业中应用的研究进展

简要介绍了阿魏酸的结构和性质,重点对其制备和在食品工业中的应用进行了综述,最后探讨了其存在的问题并展望了其应用前景。     

油田用聚合物阻垢剂的研究进展

文章根据油田用聚合物阻垢剂所具有的不同官能团对其进行分类并综述其研究进展,简要阐述了阻垢剂分子结构对阻垢性能的影响,并展望了油田用聚合物阻垢剂未来的发展方向。     

新型化学甲醛清除剂的发展概况

从室内装修、纺织品的角度对甲醛来源及危害进行了简要介绍,概括了清除甲醛的物理方法和化学方法,重点对新型化学甲醛清除剂的发展进行了总结,并对其特点进行了简要分析,最后对甲醛清除剂用于空气净化器进行了展望。     

空气过滤器的发展及其应用

简要介绍了空气过滤器的发展状况及其在各个领域的广泛应用 ,并对其市场趋势和前景进行了展望。     

A Review of Contemporary Views of Theories of Adhesion

The once distinct and independent theories of adhesion have been losing their isolation and converging. Ideas of the effects of surface roughness, once dismissed as irrelevant except in the case of textiles, have been revised; albeit on a smaller scale as details of surfaces have been revealed by sophisticated techniques. Electrostatic interactions across an interface have been more deeply explored and their significance recognised and expounded. Diffusion of groupings and chain segments within a polymer have been related to the possibilities of interaction with a variety of surfaces. Perhaps most important, theories of adsorption have been extended in depth. The precise nature of the molecular interactions have been recognised and quantified. In doing this the contribution of diffusion and elastoplastic phenomena have been integrated. These developments are collated and analysed to present the present understanding of the concepts.     

A Review of Contemporary Views of Theories of Adhesion

The once distinct and independent theories of adhesion have been losing their isolation and converging. Ideas of the effects of surface roughness, once dismissed as irrelevant except in the case of textiles, have been revised; albeit on a smaller scale as details of surfaces have been revealed by sophisticated techniques. Electrostatic interactions across an interface have been more deeply explored and their significance recognised and expounded. Diffusion of groupings and chain segments within a polymer have been related to the possibilities of interaction with a variety of surfaces. Perhaps most important, theories of adsorption have been extended in depth. The precise nature of the molecular interactions have been recognised and quantified. In doing this the contribution of diffusion and elastoplastic phenomena have been integrated. These developments are collated and analysed to present the present understanding of the concepts.     

Investigation of multiphase polymeric systems of PVC

Graft copolymers of chlororubber-20-g-(ethylacrylate-co-acrylonitrile (2:1)) and chlororubber-20-g-(styrene-co-vinyl acetate-co-acrylonitrile [1:1:1]) have been synthesized by solution precipitation polymerization technique. The graft copolymers have been characterized by elemental analysis, IR spectroscopy, and viscometry. The graft copolymers have been melt blended with PVC. The mechanical properties, such as flexural, tensile strength, and impact strength, of the blends have been studied to evaluate the relative performance of various graft copolymer blends of PVC as impact modified systems. Mechanical properties of the blends have been discussed in terms of morphology of impact fractured samples.     

The Application of Biocatalysis in the Preparation and Resolution of Morita-Baylis-Hillman Adducts and Their Derivatives

The Morita-Baylis-Hillman (MBH) reaction affords highly functionalised allylic alcohols containing a new stereogenic centre. These MBH adducts are very versatile and have been transformed into a large range of products, some of which have medicinal potential. Several examples of asymmetric syntheses of MBH adducts have been reported, although a generally applicable method remains to be developed. Biocatalytic approaches for the synthesis and enzymatic kinetic resolution of MBH adducts have been reported, and are discussed in detail in this review. Enzymes able to catalyse the asymmetric MBH reaction have been identified, but selectivity and efficiency have generally been low. Lipases, esterases and nitrile-converting enzymes have all been successfully applied in the resolution of MBH adducts, with excellent selectivity being realised in most cases.     

Study of the kinetics of processes during electrochemical deposition of zirconia from nonaqueous electrolytes

The processes of electrochemical deposition of zirconia from nonaqueous electrolytes on different substrates have been investigated. Cyclic voltammetry and linear sweep voltammetry have been used to investigate the oxygen and hydrogen reduction processes preceding/accompanying the discharge of the zirconium complex being identified. On the basis of simultaneous XPS and SEM analyses, the potential region of zirconia layer formation has been defined. The kinetic parameters of successive and parallel reduction processes have been determined. The factors hindering the formation of thick zirconia layers have been discussed.     

A function of external doping: Characteristics of inorganic nanostructure based diode

The present study has been related to synthesis and characterization of ZnO films growth by chemical spray pyrolysis technique. Variation in the characteristics of ZnO film has been evaluated as a function of Cobalt content. The influence of cobalt content on structural, morphological, optical and electrical features have been observed by XRD, SEM, AFM, UV–vis spectroscopy and I-V measurement, respectively. Structural measurements of the samples indicate that all samples have polycrystalline nature with (002) preferential orientation. SEM and AFM images have indicated that films have smooth and uniform morphology. Changes in the surface morphology of the samples have been explained by taking Cobalt incorporation into consideration. Optical studies reveal that the band gap values of the samples exhibit decreasing tendency with Cobalt content. Performance of ZnO films in Schottky diode application has been conducted by evaporation Au contact on ZnO:Co films. From I-V curves of the devices, it has been observed that all devices exhibit good rectifying properties. Also, some diode parameters such as ideality factor, barrier height have been calculated by considering thermionic emission theory (TE) and have been found in the range of 1.89–1.57 and 0.57–0.62 eV, respectively. Additionally, these results and series resistance values of the diodes have been checked and calculated by using Cheung's function. Results showed that all diode parameters highly depended on cobalt concentration. All results have been discussed in detail depending on cobalt incorporation.     

Vapor-liquid equilibria in the system of glycidol synthesis products

Vapor-Liquid equilibrium (VLE) data have been calculated for systems made up by glycidol synthesis products and have been compared with data available from the literature. The VLE data reported for the systems have been optimized using the NRTL and UNIQUAC models, and the model parameters and their accuracy have been estimated. The VLE in binary and multicomponent systems has been simulated.     

Differential scanning calorimetry investigation of curing of bisphenolfurfural resins

Bisphenolic resins have been prepared by alkali catalyzed condensation of bisphenol-F, bisphenol-A, and bisphenol-C, respectively, with furfural. The resin samples have been characterized by elemental analysis, dilute solution viscosity measurement, and measurement of number-average molecular weight. Curing reactions of these bisphenolic resins with hexamine have been investigated by differential scanning calorimetry. The overall apparent activation energies for the curing have been found to be 24 ± 2, 34.2 ± 1.9, and 36.8 ± 2.3 kcal/mole for bisphenol-F-furfural, bisphenol-A-furfural, and bisphenol-C-furfural resin, respectively. The curing reactions have been found to follow an overall first-order kinetics.     

Liquid-liquid equilibrium studies for separation of aromatics

Liquid-liquid equilibrium studies have been carried out on 11 solvents using two binary hydrocarbon mixtures for selective extraction of aromatics. The solvents used have been compared on the basis of selectivity, solvent capacity and tie line correlation curves. Tie line data have been determined for 18 systems. The selectivity and solvent power of solvents as obtained from limiting activity coefficient and tie line data have been compared. The selectivity and capacity of solvents have been related to their structure through an empirical parameter.     

Rheology of structural oil disperse systems

The problems of the rheology of oil disperse systems, which are accompanied by asphaltene particles being set into nanoaggregates and clusters of nanoaggregates and viscoelastic framework have been analyzed. The models of the coagulation of asphaltene particles and the calculation of the nanoaggregate size have been suggested. The conditions of the destruction of the structure have been considered and the rheological models of the filtration of oil disperse systems have been considered with the assumption of the Maxwell equation and model of the change of viscosity and mobility. The results have been compared with the experimental data.