泥煤对镍离子的吸附特性

通过试验不同量泥煤在不同pH溶液中溶液pH的前后变化,不同pH下泥煤吸附镍阳离子后溶液pH变化以及不同pH下溶液紫外吸收变化对比,结果表明泥煤具有一定缓冲性,不能仅以溶液酸度变化来证明泥煤吸附镍离子的机理,泥煤可能以2种方式吸附镍:pH大于4,吸附镍以离子交换为主,pH小于4,以物理吸附为主。     

酚醛树脂注塑料的化学流变行为研究

利用Brabender流变仪，考察了酚醛树脂注塑料的化学流变特性，根据双阿累尼乌斯方程建立了酚醛树脂注塑料的化学流变模型。该模型与实验结果具有较好的一致性，利用该模型可以预测酚醛注塑料注塑所需要的工艺窗口，并能动态模拟整个注塑过程中的黏度变化。     

N,N-二乙基-氨丙基甲基二甲氧基硅烷的合成及结构表征

以γ-氯丙基甲基二甲氧基硅烷和二乙胺为原料，经过胺化反应制得N，N-二乙基-氨丙基甲基二甲氧基硅烷，确定最佳反应条件为温度110℃。二乙胺与γ-氯丙基甲基二甲氧基硅烷的量之比4：1，反应时间20h，产品产率可达80%以上；并通过IR，^1HNMR光谱对产品结构进行了表征。应用HF/6-31G*量子化学从头算方法计算了分子构型。     

沥青聚氨酯防水涂料的发展概述

简要介绍了沥青聚氨酯防水涂料的现状、配方设计、性能及应用,并探讨了沥青与聚氨酯的相容性问题。     

Simulation of continuous solid‐phase polymerization of nylon 6,6. III. Simplified model

Solid‐phase polymerization (SPP) reactors are used to increase the degree of polymerization (DP) during nylon 6,6 production. In previous articles, a reactor model with partial differential equations (PDEs) in time and two spatial dimensions was developed to describe dynamic changes in polymer property profiles (DP, temperature, and moisture content) over the height of the reactor and within the polymer particles. In the current article, a simplified model is developed by deriving appropriate expressions for heat‐ and mass‐transfer coefficients and performing a lumped heat‐ and mass‐transfer analysis. Using this approach, the radial dimension is removed from the PDEs, so that the effort required to solve the model equations is substantially reduced. Predictions of the complex and simplified models are compared through simulation of two different start‐up processes. Good agreement between simplified and complex models is obtained, indicating that the simplified model can be used in place of the complex model if the polymer properties profiles within individual particles are not of particular concern to the model user. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3701–3712, 2003     

改性丙烯酸-环氧树脂纳米乳液的制备及应用

介绍了水性丙烯酸-环氧树脂纳米乳液的制备及其在油罐防腐工程中的应用。讨论了亲水侧链聚乙二醇相对分子质量大小对涂膜性能的影响以及乳化剂各组分的用量对乳液粒径的影响。     

Acrylonitrile-based copolymer membranes containing reactive groups: Surface modification by the immobilization of biomacromolecules

Asymmetric membranes fabricated from poly(acrylonitrile-co-maleic acid) (PANCMA) were immobilized with heparin and/or insulin to improve their surface properties. These biomacromolecule-immobilized PANCMA membranes were prepared by the amination of the membrane surface with ethylenediamine, followed by the reaction of the amino groups with heparin and/or insulin in the presence of 1-ethyl-3-(3-dimethyl amidopropyl) carbodiimide. The surface-modified membranes were analyzed by X-ray photoelectron spectroscopy to confirm the immobilization of the biomacromolecules. Morphological changes on the membrane surface and in the cross section were characterized by scanning electron microscopy. The surface hydrophilicity and hemocompatibility of the studied membranes were evaluated on the basis of water contact angle, platelets adhesion and cell attachment measurements. It was found that, after the immobilization of the biomacromolecules, the water contact angle and the amount of adhered platelets and macrophages on the membrane decreased significantly when compared with the nascent ones, indicating the improvement of surface hydrophilicity. Furthermore, the heparin immobilized membrane showed the best hemocompatibility among the corresponding membranes studied.     

大豆蛋白复合材料的研究进展

对国外近十年来大豆蛋白与聚磷酸盐、玻璃纤维、麦草、苎麻、淀粉、聚乙烯醇、聚己内酯、聚羟基酯醚等的复合材料的制备方法，材料性能特点进行了总结。分析了大豆蛋白复合材料作为可生物降解材料替代某些通用塑料和工程塑料的应用前景，并提出了近期的发展方向。     

换热器的技术经济评价

在综合考虑原材料购置、设备磨损、电力消耗等相关因素的基础上,提出了采用总投资费用法,运行成本费用法,年计算费用法,费用现值与费用年值法等4种方法对多种换热器投资方案进行分析,便于对不同选型方案进行经济性分析,以达到技术上可行、经济上合理的目标.     

莫莱石－堇青石滤料滤池在生产上的应用

本文对景德镇市黄泥头水厂进行了单层莫－堇滤料滤池和双层莫－堇－煤滤料滤池的生产性试验。试验结果表明：单层莫－堇滤池和双层莫－堇－煤滤池的周期产水量分别是单层砂滤池和双层砂－煤滤池的１．４倍和１．５倍，而且前两种滤池的出水水质优于后两种滤池。