环氧树脂-聚丙烯酸酯乳液型复合薄膜粘合剂

本文主要叙述了环氧-丙烯酸酯聚合乳液的合成,以及该乳液粘合剂的配制;讨论了该乳液粘合剂的粘合性能及耐水、耐溶剂性能。     

聚氨酯丙烯酸酯紫外光固化PVC涂料的研制

通过对涂料不同组分的种类及配比进行调节,制备不同配方的PVC清漆。在测试附着力、硬度、耐温、耐水性能的基础上,优化涂料配方,并配制出性能优异的PVC清漆涂料。     

Preparation,characterization, and adsorption properties for metal ions of a novel chelating resin containing sulfoxide and diethylene glycol

A novel chelating resin containing sulfoxide and diethylene glycol, poly{4‐vinylbenzyl‐[2‐2‐(hydroxyethyl)ethoxyl]sulfoxide} (PVESO) was synthesized using chloromethylated polystyrene (PS‐Cl) as material. Its structure was characterized by elemental analysis, infrared spectra, and scanning electron microscopy (SEM). The adsorption capacities of the resin for Hg²⁺, Ag⁺, Cu²⁺, Zn²⁺, and Pb²⁺ at various pH values were determined. The maximum adsorption capacities for Hg²⁺ and Ag⁺ were 1.56 and 0.75 mmol g^?1 respectively. The resin had high selectivity for Hg²⁺ and Ag⁺ over the pH range 1.0–7.0. The adsorption capacities for Hg²⁺ and Ag⁺ under competitive condition were also determined by batch experiment method. In addition, the adsorption kinetics of the resin towards Hg²⁺ at different temperatures was also investigated. The results showed that the adsorption rate was governed by film diffusion at 20°C and 25°C, by particle diffusion at 30°C and 35°C. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 6054–6059, 2006     

浅析呼和浩特市大气SO2发展趋势及防治对策

本文通过对二氧化硫的形成及危害的阐述，以及对我市近几年大气中二氧化硫监测结果的分析，针对发展趋势和存在的问题，根据实际情况提出相应的建议。     

Soap‐free emulsion copolymerization of perfluoroalkyl acrylates in the presence of a reactive surfactant

Soap‐free emulsion copolymerization of perfluoroalkyl acrylate (FA)/methyl methacrylate (MMA)/n‐butyl acrylate (n‐BA) was carried out in the presence of sodium 2‐acrylamide‐2‐methyl propanesulfonate (AMPSNa) as a reactive surfactant and potassium persulfate (KPS) as an initiator. An analysis of the effects of concentration of AMPSNa, KPS, FA as well as polymerization temperature on the kinetic features (rate of polymerization) and colloidal characteristics (mean particle diameter, particle disperse index, particle numbers, and surface charge density) was followed. NMR, FTIR, AFM, and fluorine‐selective electrode analysis were used to characterize the composition and morphology of the FA copolymers. Both AFM analysis and contact angle measurements strongly implied that the fluorinated segments migrated to the outmost surface and created films with lower surface energy. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2438–2444, 2007     

CaSO_4晶须对聚氨酯胶粘剂性能影响的研究

用实验室自制的相对分子质量为2500的聚己二酸-1,4-丁二醇酯二醇和甲苯二异氰酸酯、混合扩链剂配制聚氨酯胶粘剂,并使用实验室自制的改性和未改性200nm硫酸钙晶须对聚氨酯胶粘剂进行改性,考察不同硫酸钙晶须及其加入量、加入方式对聚氨酯胶粘剂综合力学性能的影响。根据实验结果,200nm改性硫酸钙晶须当加入量为3％时,聚氨酯胶粘剂的拉伸强度、初粘性和最终剥离强度均有明显提高。     

快速高效隔膜压滤机在鹤壁四矿选煤厂的应用

介绍了快速高效隔膜压滤机的主要性能参数和特点 ;分析了压滤机在煤泥水处理系统中的应用情况和运行结果 ;应用快速高效隔膜压滤机对煤泥水处理系统进行改造后获得了较好的经济及社会效益     

新型聚丙烯接枝物的制备及应用

为制备强韧的共混材料,利用熔融接枝法研制了含有两种接技单体的新型聚丙烯接枝物,讨论了第二单体在接枝过程中的作用,并将其应用于尼龙6/聚丙烯(PA6/PP)共混体系,获得了使分散相粒径更细小、界面更模糊的增容效果。     

庙宇平坝防洪治理方案研究

庙宇平坝地处大溪河右岸支流庙宇沟上游山间盆地内,仅靠一条人工开凿的排洪洞和天然消坑排泄洪水,过流能力不足致使每年都遭受洪涝灾害。根据庙宇平坝地形条件及防洪现状,复核现有排洪设施泄流能力,分析存在的问题,结合庙宇平坝地形条件及区内实际情况,采取整个消水洞的扩建及进口前100 m的河道支护,从而提高泄洪能力,降低庙宇平坝水位,有效减少洪水淹没历时及淹没深度。     

广西田阳县生态扶贫产业核心示范区一期工程补水泵站设计

结合广西田阳县生态扶贫产业核心示范区一期工程补水泵站实际情况,通过方案比选,采用河流入江口东岸布置方案,并对泵站进行了设计介绍,总结技术特点,为类似工程提供参考。