Ce掺杂ZnS纳米线的制备及光学性质研究

利用水热法合成Ce掺杂ZnS纳米线,通过X射线衍射(XRD),透射电子显微镜(TEM),光致发光(PL)等测试手段对样品的结构、形貌和光学性能进行表征.结果表明:Ce成功地掺入到ZnS的晶格中,样品沿着(002)方向优先生长,并且具有较好的光学性能.     

Self-assembled sponge-like hydroxyapatite induced by modified articular cartilage membrane template

Using modified pig bone articular cartilage membrane as template, a sponge-like hydroxyapatite (HA) scaffold material was in-situ synthesized by self-assembly in simulated body fluid. Its crystallographic structure and composition were studied by SEM, XRD, FTIR and TEM, which showed that the synthesized sample was carbonated HA crystals and the three-dimensional interconnected sponge-like structure consists of massive nano hydroxyapatite plates. The physicochemical properties of the samples were tested and the results indicated that the sponge-like HA had high density, porosity and specific surface. Experimental cell culture results also showed that sponge-like HA greatly increases the bioactivity, osteoconductivity and differentiation of human osteosarcoma MG-63 cells.     

Experimental Investigation of the Isothermal Section in Fe-Gd-Pd Ternary System at 873 K

Isothermal section of Fe-Gd-Pd ternary system at 873 K has been established by means of x-ray diffraction (XRD), differential scanning calorimetry (DSC), and scanning electron microscope (SEM) with energy disperse x-ray spectroscopy (EDS) in backscattered electron imaging modes. The isothermal section consists of 14 single-phase regions, 25 two-phase regions, and 12 three-phase regions. At 873 K, no ternary compound was found and the binary inermetallic compounds Gd₃Pd and Fe₂₃Gd₆ are not stable, whereas the compound Fe₂₃Gd₆ decomposes into compounds Fe₁₇Gd₂ and Fe₃Gd. The XRD and the SEM/EDS analysis show that there is almost no solubility of Gd in the FePd and FePd₃ phases, and the solubilities of Pd in Fe₁₇Gd₂, Fe₃Gd and Fe₂Gd and Fe in GdPd₂, α-Gd₃Pd₄ and Gd₃Pd₂ are all less than 1 at.%. Meanwhile, the solubilities of Fe in GdPd₃, α-GdPd and Gd₇Pd₃ are determined to be as high as 1.37, 5.31, and 4.18 at.% Fe, respectively.     

2-烷基蒽醌的合成方法

2-烷基蒽醌是重要的精细化学品,是过氧化氢生产中广泛使用的工作载体。传统合成方法苯酐法和氧化法分别存在污染严重和原料来源受限的问题。近年来,将分子筛、离子液体和杂多酸等催化剂用于2-烷基蒽醌的合成,减少了苯酐法合成过程中的废水量,提高了转化率和选择性。通过设计多种合成路线,开发了一系列2-烷基蒽醌的绿色合成方法,对其工业化生产具有重要意义。     

Miscibility enhancement of supramolecular polymer blends through complementary multiple hydrogen bonding interactions

We have investigated the miscibility behavior and specific interactions of supramolecular poly[vinylbenzylthymine‐co‐(butyl methacrylate)] (T‐PBMA) and poly[(2‐vinyl‐4,6‐diamino‐1,3,5‐triazine)‐co‐styrene] (VDAT‐PS) blends with respect to their vinylbenzylthymine (VBT) and 2‐vinyl‐4,6‐diamino‐1,3,5‐triazine (VDAT) contents. Fourier transform infrared spectroscopy revealed that multiple hydrogen bonding interactions occurred exclusively between the VDAT and VBT units, which were stronger than adenine and thymine interactions. A miscibility window occurred in the VDAT‐PS/T‐PBMA blend system when the VBT and VDAT fractions in the copolymers were greater than 7 mol%, as predicted using the Painter–Coleman association model. Copyright © 2010 Society of Chemical Industry     

银铜复合带材生产工艺的研究

采用快冷雾化制粉技术和可控气氛复合技术生产高性能的银铜复合带材，可以连续大卷重进行生产，所生产的复合带材厚度比均匀，复合介面清洁、复合强度高，电性能良好，并可根据客户的要求生产不同厚度比和机械性能的带材。     

PDH准数字微波通信设备技术维护经验浅议（下）

在我省所用的PDH准数字微波通信设备运行维护的基础上，对经常发生的设备故障和由此而引起的电路阻断原因进行了分析和总结，汇集了多年来各站的故障判断及处理方法和维护经验。     

钢纤维增强聚合物水泥砂浆PF刚性屋面防水层的变形特性研究

针对目前国内外普遍存在的屋面防水问题 ,根据聚合物与水泥的复合物有利于改善材料内部结构密实度以及聚合物和钢纤维均能改善材料变形能力的特性 ,提出了用钢纤维增强聚合物水泥砂浆作为刚性屋面防水材料的设想 ,通过对钢纤维聚合物水泥砂浆的弹模、干缩等试验 ,论证了此种材料在技术上的可行性