防渗涂料在蔺河口碾压混凝土拱坝中的应用

蔺河口碾压混凝土拱坝以二级配富胶凝材料碾压混凝土及变态混凝土自身作为防渗体为主,大坝死水位以下涂刷LJP型合成高分子防渗涂料,作为辅助防渗措施。通过涂料材质性能试验,证明该涂料可以满足施工需要,并可以简化防渗结构,方便施工,大坝自2003年10月27日蓄水运行以来,防渗效果良好。     

稀土掺杂二氧化态光催化的研究进展

论述了半导体光催化反应机理，单一半导体光催化剂的光催化活性普遍不高，通过掺杂可以提高光催化活性，甚至在提高活性的同时扩展光谱响应范围，提高光的利用率。纳米TiO2是一种宽禁带半导体光催化剂，可用于有机污染物及无机污染物等方面的降解。     

氟化改性丙烯酸树脂的合成及在飞机蒙皮涂料中的应用

合成了氟化改性羟基丙烯酸树脂,用HDI三聚体为固化剂,配制双组分聚氨酯丙烯酸飞机面漆,介绍了配方设计、性能检测及其在飞机上的使用效果。     

有色丙纶细旦棉型短纤维生产及纺纱技术研究

定性地分析和讨论有色PP细且棉型短纤维生产及其纺纱过程的主要因素,着重探讨有色母粒对成品纤维性能及纺纱过程的影响,确定最佳纺丝工艺条件,控制 PP 有色细且短纤维物理性能,以满足纺纱工艺要求.     

氟碳飞机蒙皮涂料的研制

介绍了目前国内飞机蒙皮涂料的发展及存在的问题 ,分析讨论了性能优异的氟碳涂料在飞机蒙皮中应用的意义。     

The structure and properties of Ag(Nb0.8Ta0.2)O3 ceramic doped with MnNb2O6

The influences of doping of MnNb2O6 on the structure and dielectric properties of Ag(Nb0.8Ta0.2)O3 were illustrated. Ag(Nb0.8Ta0.2)O3 samples doped with different amount of preformed MnNb2O6 (1 mol%, 2 mol%, 3 mol%, 4 mol%, 6 mol%, 8 mol%) were prepared by traditional solid-state reaction method and characterized by XRD, SEM and EDS, and the dielectric properties of samples were compared. The experiment results indicated that when the doping amount of MnNb2O6 was greater than 3 mol%, second phase appeared because of the solid solution limit. The permittivity of the Ag(Nb0.8Ta0.2)O3 samples doped with MnNb2O6 firstly increased and then decreased with the sintering temperature, while the dielectric loss decreased first, and then increased slightly. 1 100 ℃ seems to be the most proper sintering temperature for most of the samples. When the amount of MnNb2O6 is about 3 mol%, the samples have the best dielectric properties, larger permittivity and smaller dielectric loss.     

FePt纳米薄膜研究进展

由于FePt在超高密度磁存储材料方面的广阔应用前景及其局限性,研究人员对FePT薄膜进行了大量的研究及改性.根据国外近期在此领域的研究现状,综述了单相、复相及掺杂FePt薄膜的制备以及对结构和性质的影响.复相或掺杂主要是通过结构的改变来降低L10晶相转变温度和FePt颗粒的大小,通过其耦合作用来影响FePt薄膜的磁学性能,使其成为超高密度存储器材料.     

Characteristics of functionalized nano-hydroxyapatite and internalization by human epithelial cell

Hydroxyapatite is the main inorganic component of biological bone and tooth enamel, and synthetic hydroxyapatite has been widely used as biomaterials. In this study, a facile method has been developed for the fabrication of arginine-functionalized and europium-doped hydroxyapatite nanoparticles (Arg-Eu-HAP). The synthesized nanoparticles characterized by transmission electron microscopy, X-ray diffractometry, Fourier transform infrared, and Zeta potential analyzer. Its biological properties with DNA binding, cell toxicity, cell binding and intracellular distribution were tested by agarose gel electrophoresis assay, flow cytometry, and fluorescence microscope and laser scanning confocal microscope. The synthesized Arg-Eu-HAP could effectively bind DNA without any cytotoxicity and be internalized into the cytoplasm and perinuclear of human lung epithelial cells.     

纳米透明隔热涂料在建筑节能中的应用

介绍纳米透明隔热涂料对不同频谱阳光的透过具有选择性及其在建筑玻璃上的开发应用.它不但经济适用,而且节能环保,因而为建筑节能提供了一条新思路.     

添加剂对天然磁铁矿直接合成永磁铁氧体的影响

用天然磁铁矿作原料，不进行磁选，直接用固相反应法生产永磁铁氧体，通过对氧化铋、高岭土、碳酸钙、硫酸锶等添加剂以及用量的研究，说明添加剂对天然磁铁矿石直接合成永磁铁氧体有很大影响，在适合的反应条件和添加剂下，合成出的永磁铁氧体剩磁力0．312T，矫顽力为345kA／m，最大磁能积为18kJ/m^3（2．23MGOe）。结果表明，天然磁铁矿不经过磁选过程完全能够生产出性能优良的永磁铁氧体产品。