POE在塑料改性中的应用进展

综述近几年聚烯烃弹性体(POE)与通用塑料、工程塑料共混改性的进展。与改性剂(乙烯／丙烯／二烯)共聚物和(苯乙烯／乙烯—丁烯／苯乙烯)共聚物相比，POE和功能化的POE作为一种新型改性剂能在较低含量下实现材料的脆—韧转变，减少了因加入弹性体造成的材料强度和模量的损失。     

2007年我国工程塑料加工技术进展

根据2007年国内有关工程塑料的文献,从加工工艺、加工设备、模具设计及二次加工等方面综述了我国工程塑料加工技术的进展。     

2010年我国工程塑料加工技术进展

根据2010年国内公开发表有关工程塑料的文献,从加工工艺、加工设备、模具设计及二次加工等方面综述了我国工程塑料加工技术的进展.     

漆酚高分子树脂在电化学测定铜中的应用

报道了用漆酚高分子树脂修饰碳糊电极测定痕量铜离子的电分析方法。该电极能用于环境水样中痕量Cu2+的高灵敏度测定,在0.1mol/L的KNO3中,进行DPV扫描后,在-0.02V处出现一氧化峰,利用该峰可进行Cu2+定量测定。通过优化测定条件,利用该修饰电极测定Cu2+的线性范围为:1×10-8～3×10-7mol/L,检测限为5×10-10mol/L。用于环境水样中痕量Cu2+的测定,平均回收率大于98%。     

2005年我国工程塑料加工技术进展

根据2005年国内有关工程塑料的文献,从加工工艺、加工设备、模具设计及二次加工等方面综述了我国工程塑料加工技术的进展。     

胶团强化超滤在处理重金属离子废水中的应用

本文介绍了一种具有表面活性荆双分子结构特性的新型重金属离子废水处理技术一胶团强化超滤（Micellar—enhanced Ultrafiltration，简称MEUF）。MEUF适用于单独或同时从废水中去除多价金属离子，具有工艺简单，易于工业化的特点。文章介绍了胶团强化超滤的原理、主要影响因素、存在的问题及解决方法，总结了近年来胶团强化超滤应用的最新研究成果，认为该技术具有良好的应用前景。     

漫反射FTIR法在橡胶制品增强纤维剖析中的应用

采用漫反射傅里叶变换红外光谱法，建立了标准橡胶制品增强纤维的谱图库。可直接对从橡胶制品中剥离出的增强纤维进行分析，也适用于表面有残留橡胶及其浸渍物质、难以分离完全以及仅有少量试样的橡胶制品中的增强纤维的剖析。     

微量水条件下环硅氧烷开环聚合中端羟基浓度随反应全程变化规律

聚二甲基硅氧烷的制备方法有开环聚合和缩合聚合两大类,其中又以碱为催化剂的环硅氧烷阴离子开环聚合尤为重要．在一般反应条件下,碱催化剂对水十分敏感,微量水将抑制反应的进行．因此,前人多在无水条件下进行环硅氧烷阴离子开环聚合的研究,并认为是一个典型的可逆平衡聚合     

2008年我国工程塑料加工技术进展

根据2008年国内有关工程塑料的文献,从加工工艺、加工设备、模具设计及二次加工等方面综述了我国工程塑料加工技术的进展.     

2009年我国工程塑料加工技术进展

根据2009年国内公开发表有关工程塑料的文献,从加工工艺、加工设备、模具设计及二次加工等方面综述了我国工程塑料加工技术的进展.     

2006年我国工程塑料加工技术进展

根据2006年国内有关工程塑料的文献,从加工工艺、加工设备及模具设计等方面综述了我国工程塑料加工技术的进展。     

ABS在聚合物共混改性中的研究进展

从聚合物共混改性原理的角度介绍PVC／ABS、PBT／ABS、PA／ABS三种重要的共混物。分析了ABS用量和加工工艺对共混物性能的影响，讨论了ABS共混物的增容改性技术。展望了ABS共混物的前景，并强调了研究过程中应注意的问题。     

明清时期海上陶瓷之路的繁荣

文章论述了晴清两代政治经济，以及郑和下西,世界新航线与商业贸易对陶瓷行业的影响，特别是对陶瓷之路发展繁荣的推动作用，中国陶瓷尤其是景德镇陶瓷对世界文化的贡献，论证了陶瓷之路源在中国，流在世界。     

关于冶金学中使用国际单位制若干问题的探讨

本文就十余年来我国在冶金学领域使用国际单位制所遇到的问题，特别是关于热量和压力单位等问题，提出一些不同的意见；期望在冶金领域中使用国际单位更加顺利，又不要影响数据的精确性．     

UTILIZATION OF POPULATION BALANCES IN SIMULATION OF LIQUID-LIQUID SYSTEMS IN MIXED TANKS

A simulation model has been developed to model drop populations in a mixed tank. A multiblock mixed tank model has been used with the drop population balance equations developed in the literature. The drop breakage and coalescence functions used in the population balance model take into account the local turbulent energy dissipation values. The drop breakage and coalescence function parameters are fitted against drop size measurements from dense liquid-liquid dispersions, which were assumed fully turbulent. Since the local turbulence and flow values of a mixed tank are used in the present model, the fundamental breakage and coalescence phenomena can be taken into closer examination. Furthermore, the present model is capable of predicting inhomogeneities occurring in a mixed tank. It is also considered as an improved tool for process scale-up, compared to the simple vessel-averaged population balance approach, or use of correlations of dimensionless numbers only. The present model can use two sources of data for fitting parameters in the drop rate functions. One is the transient data of the measured drop size distribution as the impeller speed is changed. The other is the time-averaged data measured at different locations of the mixed tank. Different flow regions can be chosen from direct measurements or from the CFD simulations in a straightforward manner. CFD flow simulation results can be used when no experimentally obtained flow conditions are available. This is especially useful for nonstandard vessels, such as reactors containing cooling coils.     

DISPERSION OF MATTER IN FLOW OF A BINGHAM PLASTIC IN A TUBE

The paper is concerned with the dispersion of a solute in a Bingham plastic fluid flowing in a pipe or a parallel plate channel. For pipe flow, the dispersion coefficient K₂ first increases with ξ₀ (the dimensionless radius of the plug flow region), reaches a maximum and then decreases. But in a channel flow, K₂ decreases monotonically with increasing ξ₀. Further K₂ for channel flow is found to be larger than that for pipe flow for all values of ξ₀ except 0.8≤ξ₀≤1.     

IN SITUMEASUREMENT OF PHOTOCHEMICAL REACTIONS IN MICRODROPLETS

A technique based on fluorescence scattering by microdroplets has been shown to be capable of measuring instantaneous rates of photochemical reactions in microdroplets. The technique has been applied to study trans -to-cis photoisomerization of thioindigo dye in single solution droplets suspended in an electrodynamic balance. Through an analysis it is shown that the concentration distributions of isomers remain uniform in a droplet under the experimental conditions; thus, the scattered fluorescence intensity from the droplet is proportional to the concentration of solely fluorescent trans isomer molecules. The steady-state scattered fluorescence intensity versus incident laser power data have been used to interpret the kinetics of the reaction. The results show that the rate constants can be determined from the scattered fluorescence intensity versus time data. The technique is particularly suitable when only one species fluoresces in the photo-reactive wavelength range while other species present in a droplet do not.     

助剂在钴基催化剂F-T合成重质烃反应中的应用

煤 /天然气经合成气生产洁净二次能源和化学品将在本世纪初成为重要的能源化过程 .在新的过程观念 ( SMDS法 )中 ,新型钴基催化剂的制备是 F- T合成重质烃反应中的关键问题 ,其中助剂可以对催化剂的活性和选择性进行调变 .概述了专利中常用的助剂如金属钌、氧化锆、氧化镧对钴基催化剂 F- T反应性能的影响及作用机制 ,指出添加适当的助剂可以在不影响催化剂的F- T反应活性的前提下 ,提高产物的长链烃 ( C5 )选择性 .     

MBR法在峨眉山垃圾填埋场渗滤液处理工程中的应用

在分析生活垃圾渗滤液水质特点的基础上,结合工程实例阐述了MBR工艺处理垃圾渗滤液的工艺流程、原理等,说明了MBR工艺处理垃圾渗滤液的特点和优势,经该工艺处理垃圾渗滤液可以达到国家排放标准,进而为我国生活垃圾填埋场渗滤液的咎置提供借鉴.     

DISPERSION OF MATTER IN FLOW OF A BINGHAM PLASTIC IN A TUBE

The paper is concerned with the dispersion of a solute in a Bingham plastic fluid flowing in a pipe or a parallel plate channel. For pipe flow, the dispersion coefficient K ₂ first increases with ξ₀ (the dimensionless radius of the plug flow region), reaches a maximum and then decreases. But in a channel flow, K ₂ decreases monotonically with increasing ξ₀. Further K ₂ for channel flow is found to be larger than that for pipe flow for all values of ξ₀ except 0.8≤ξ₀≤1.