15%毒死蜱烟雾剂防治甘蔗绵蚜田间药效试验

15％毒死蜱烟雾剂对甘蔗绵蚜具有良好的防治效果。用15％毒死蜱烟雾剂100、150、200m1／667m^2的田间防效1-10天均在98．6％以上，可作为甘蔗绵蚜防治中的轮换用药。田间使用以100—150ml／667m^2为宜。     

反应条件对聚氨酯/丙烯酸水分散体合成及性能的影响

以甲苯二异氰酸酯(TDI-80)、PPG1080、1,4-丁二醇(BDO)、二羟甲基丙酸(DMPA)、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)为主要原料合成了聚氨酯／丙烯酸水分散体(PUA)树脂。研究了影响PUA合成、稳定性和漆膜性能的各种因素。     

我国人工皮革发展机遇的探讨

介绍了国外超细纤维人工皮革的产销与应用情况．追溯了国际上这一领域最新技术的进展．通过对国内未来几年市场需求的分析与预测，提出了应在高起点上发展我国人工皮革的思路。     

合成气制二甲醚的研究进展

简要介绍了合成气制二甲醚的原理，工艺流程，双功能催化剂以及近年来的发展状况。     

Well-dispersed single-walled carbon nanotube/polyaniline composite films

Single-walled carbon nanotube (SWNT)/polyaniline (PANI) composite films with good uniformity and dispersion were prepared by electrochemical polymerization of aniline containing well-dissolved SWNTs. The results of atomic force microscopy (AFM) and UV-Vis adsorption spectroscopy show that aniline can be used to solubilize SWNTs via formation of donor-acceptor complexes. The electrochemical deposition of SWNT-aniline solutions have been investigated by cyclic voltammetry. The results show that SWNT-based aniline solutions exhibit a drastic increase in peak current within the potential scanning region. The doping effect of SWNTs on PANI films was investigated by electrochemistry and FTIR spectroscopy. The results indicate that the enhanced electroactivity and conductivity of the SWNT/PANI composite films may be due to the strong interaction between SWNTs and PANI, which facilitates the effective degree of electron delocalization.     

Functionalized carbon nanotubes: properties and applications

Carbon nanotubes can be functionalized via amidation and esterification of the nanotube-bound carboxylic acids. The solubility of these functionalized carbon nanotubes makes it possible to characterize and study the properties of carbon nanotubes using solution-based techniques. Representative results concerning the solubility, dispersion, defunctionalization, and optical properties of the functionalized carbon nanotubes are presented. Several examples for the use of functionalized carbon nanotubes in the fabrication of polymeric carbon nanocomposites, the probing of nanotube-molecule interactions, and the conjugation with biological species are highlighted and discussed.     

二甲醚火焰传播速度的实验测定

二甲醚被誉为21世纪的绿色燃料，是目前理想的内燃机与民用替代燃料．为了获得二甲醚应用的重要基础参数——火焰传播速度，在定容球弹法、本生火焰法和平面火焰法作出比较分析后，采用本生火焰法实验测定了二甲醚火焰的传播速度．得出了二甲醚火焰传播速度与一次空气系数的关系曲线，并且在一次空气系数约为0．85处，二甲醚火焰传播速度的峰值为0．48m／s．     

HN型催化剂催化α——蒎烯制苎烯的初步研究

本文用ＨＮ型催化剂低温催化α－蒎烯异构化制苎烯，考察了反应温度、反应时间、催化剂种类对反应结果的影响。实验结果表明在７０℃、反应４ｈ以上，苎烯的选择性仍保持在３５％以上。     

二安替吡啉甲烷--变色酸分光光度法分析陶瓷中的钛

介绍了一种高选择性、精密度较好的快速分析陶瓷中钛方法。在酸性介质中,变色酸(XK)、二安替吡啉甲烷(IIAM)两种试剂与钛共同作用形成三元络和物,三元络合物最大吸收位于510nm处,摩尔比为Ti:XK:IIAM=1:2:2,是测定陶瓷中钛的快速分析方法。     

Preparation of solar selective absorbing CuO coating for medium temperature application

A new method of preparing CuO solar selective absorbing coating for medium temperature is presented. After pretreatment, brass was overlaid with CuO by chemical plating. The effects of reactant concentration, reaction temperature and reaction time on the absorptivity of CuO coating were investigated. The optimized condition of preparing CuO coating was obtained. The CuO coating was analyzed with X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). In order to prolong the period of use, the CuO coating was protected by TiO₂. The experiment shows that the TiO₂/CuO coating is more heat-resistant, acid-resistant, and wear resistant than CuO coating, without losing absorptivity markedly. The TiO₂ coating can reduce emissivity and protect the CuO coating. Translated from Journal of Tianjin University, 2006, 39(12): 1485–1489 [译自: 天津大学学报]