抗菌性沸石的开发与应用

根据大量文献及国内外的考察结果 ,全面系统地介绍了抗菌性沸石的研究现状及在各个领域中的应用     

分解炉循环喂料与物料停留时间分布的关系

:通过对外循环反应器的物料停留时间分布的研究 ,分析了带Pyrotop的分解炉内物料的循环比对物料平均停留时间的影响 ,为工厂的实际操作提供了理论根据     

铝厂废弃物合成聚合碱式硅硫酸铝的研究

介绍了聚合碱式硅硫酸铝的制备方法,着重讨论了碱处理温度及其它动力学条件对产物性能的影响。     

长石在压蒸条件下的碱溶出

测试了压蒸条件下两种天然长石在水及饱和Ca(OH) 2 溶液中碱溶出情况。结果表明 :长石在水中碱溶出量比较少 ,溶出的碱主要是钠碱。长石在饱和Ca(OH) 2 溶液中碱溶出量比较多 ,溶出的碱包括钠碱和钾碱。集料碱溶出对混凝土碱含量影响比较小     

有机硅离型纸的生产

简述有机硅离型纸的生产与几种离型纸的性能     

二元共聚吸醇树脂的合成及其性能研究

以过硫酸钾为引发剂 ,硝酸镍为添加剂 ,进行了丙烯酸和丙烯酸羟乙酯 (AAO)及甲基丙烯酸二甲胺乙酯 (DM)的溶液共聚研究 ,制得了吸醇性树脂。研究了树脂的吸醇性能与丙烯酸浓度、引发剂用量和硝酸镍用量的关系 ,同时考察了树脂对不同浓度的异丙醇水溶液的选择性吸收 ,得到了较好的结果     

Chemical reactions,thermal and mechanical properties of epoxy — Polycarbonate blends cured with aromatic amines

Bisphenol-A polycarbonate (PC) has been incorporated into epoxy resin cured with 4,4-diaminodiphenyl sulphone (DDS) and 4,4'-diaminodiphenyl methane (DDM). IR spectra reveal that transesterification and transamidation occur between the carbonate group of PC and the hydroxyl group of cured epoxy resin for the DDM-cured system, and that only transesterification occurs for the DDS-cured system. Scanning electron micrographs (SEM) show no evidence of phase separation in these cured systems, which is an indication of full miscibility between the bisphenol-A monomers and PC-oligomers with the copolymer network. The mechanical strength and glass transition temperature (T_g) fluctuate with PC content, whereas the flexural modulus shows a steadily increasing tendency.     

两种杯[6]芳烃的红外光谱和拉曼光谱研究

研究了两种对－叔丁基杯〔６〕芳烃的红外和拉曼光谱。对－叔丁基杯〔６〕芳烃Ｉ的环状的分子内缔合氢键和部分甲基化的（１,３,５－三甲基）－对－叔丁基杯（６）芳烃Ⅱ的三中心氢键在红外光谱中有明显反映杯（６）芳烃的ｐｉｎｃｈｅｄ ｃｏｎｅ（紧锥型）构象也得到了证明,而两种杯（６）芳烃氢键构象和强度的不同导致了二者的拉曼谱图也存在较大的差异。     

N1-(2-苯基-1,2,3-三唑-4-甲酰基)-吡唑类衍生物的合成

利用２－苯基－１,２,３－三唑－４－甲酰肼（１）分别与３－芳基偶氮乙酰丙酮（２）和３－芳基偶氮乙酰乙酸乙酯（３）在酸性条件下环化,制得１２个新的Ｎ１－（２－苯基－１,２,３－三唑－４－甲酰基（－３,５－二甲基－４－芳基偶氮吡唑（４）和Ｎ１－（２－苯革－１,２,３－三唑－４－甲酰基）－３－甲基－４－芳基偶氮－２－吡唑啉－５－酮（５）,用元素分析、ＩＲ、＾１ＨＮＭＲ和ＭＳ确定了它们的结构。     

Deposition of Nano-Size Titania—Silica Particles in a Hot-Wall CVD Process

The deposition of nano-size titania—silica particles is carried out in a hot-wall CVD reactor by using two premixed precursors, titanium tetraisopropoxide (TTIP) and tetraethyl orthosilicate (TEOS). The deposition occurs mostly in two regions, one near the reactor entrance and the other near the reactor exit. Deposits collected near the reactor entrance are densely packed micrometer-size aggregates/particles of good adhesion to the substrate, while those near the reactor exit are loosely packed nano-size particles with a poor adhesion to the substrate. It is conjectured that the more reactive TTIP reacts first and produces TiO₂ particles later covered by SiO₂ formed via a catalytic surface reaction of the less reactive TEOS on TiO₂ particle surfaces. The presence of surface SiO₂ retards the growth of TiO₂ particles, leading to deposits formed by micrometer-size aggregates containing nano-size primary particles of 30 to 40 nm in the first deposition region. With less or no SiO₂ present on TiO₂ particle surfaces, the deposits formed in the first deposition region are densely packed micrometer-size particles. The Ti/Si ratio of the produced particles, for a furnace temperature of 750°C, increases with increasing TTIP/TEOS concentration ratio, and is lower than the Ti/Si ratio of the incoming reactant stream. The Ti/Si ratio of the particles is also found to decrease with increasing furnace temperature.