棉纤维表面氨基硅的膜形貌及其定向排列方式

 用场发射扫描电镜FE-SEM和光电子能谱仪XPS研究了天然棉纤维表面氨基硅——N-β-氨乙基-γ-氨丙基聚二甲基硅氧烷(ASO-1)的膜形貌及其定向排列成膜方式。结果发现,在观察尺寸WD≥200 nm的条件下,ASO-1在棉纤维表面形成的硅膜呈相对均匀的平滑形貌。XPS定量分析表明,在ASO-1处理后的棉纤维表面,大多数N原子被固定在硅膜与纤维的界面。这表明氨基硅在棉纤维表面的定向排列成膜方式为:硅甲基朝外伸向空气,Si—O偶极键及极性氨基指向纤维界面。     

高速摄影在纺织科技中的应用

一、高速摄影及其独特的光测技术特点高速摄影具有极高的空间分辨能力,并具有人眼难于辨解的时间分辨力,是一种高速图象的光信息,通过摄影进行实时记录物体动态变化的过程。它具有两个含意,从摄影方面来说,摄影速度很高或曝光时     

煤矿巷道掘进特殊情况对策分析

煤矿巷道掘进作为煤炭资源开采的首要环节,其安全、可靠、高效直接影响煤矿效益,在巷道掘进中常会遇到各种特殊情况。就煤矿巷道掘进施工中遇到的过断层、过采空区、综合防突及相邻巷道扰动几种情况,结合工程实践给予一定的分析并提出对策。所述结论对煤矿巷道掘进施工有一定的指导意义。     

2,6,8,12-四硝基-4,10-二(2,2,2-三硝基乙基)-2,4,6,8,10,12-六氮杂三环[7·3·0·0~(3,7)]十二烷二酮-5,11-放热第一阶段分解反应的动力学和机理(英文)

在程序升温条件下,用DSC、TG DTG和IR,研究了标题化合物的热行为和放热第一阶段分解反应的动力学和机理。提出了反应机理。该反应的微分形式的动力学模式函数、表观活化能(Ea)和指前因子(A)分别为1/3(1-α)[-ln(1-α)]-2,166.6kJ·mol-1和1013.29s-1。标题化合物的热爆炸临界温度为191.16℃。该反应的ΔS≠、ΔH≠和ΔG≠分别为50.8J·mol-1·K-1、162.9kJ·mol-1和139.9kJ·mol-1。     

羧基化聚醚有机硅及其构筑的超分子膜

利用Si-H封端的聚二甲基硅氧烷(PHMS)与烯丙基聚氧乙烯聚氧丙烯醚(F6)的硅氢化加成反应合成聚醚-b-聚硅氧烷中间体(PESO),再用马来酸酐对其进一步改性,合成了羧基化聚醚有机硅(CPES),用红外光谱(IR)、核磁共振氢谱(1H-NMR)确认了CPES的结构,然后用原子力显微镜(AFM)对基于CPES及其构筑的超分子膜形貌进行了研究.结果表明,由CPES与N-β-氨乙基γ-氨丙基聚二甲基硅氧烷(ASO-1)在乙酸乙酯稀溶剂介质中自组装构筑的超分子膜CPES/ASO-1,其形貌完全不同于结构基元CPES与ASO-1,在其表面不仅有众多细小亮斑存在,而且还分布有一定数目形体较大、环形亮斑套有小亮斑的分子聚集体.其原因可能是离子化后的CPES胶束在ASO-1分子周围发生单层或多层吸附、团聚而产生的.     

Thermokinetics of Liquid-Liquid Reaction of Dy（NO3 ）3 with Histidine

The thermokinetics of liquid-liquid reaction of dysprosium nitrate with histidine were studied using a microcalorimeter. On the basis of experimental and calculated results, threethermodynamic parameters (the activation enthalpy, the activation entropy and the activation free enegy),the rate constant, three kinetic parameters (the activation energy, the pre-exponential constant and the reaction order) wereobtained. On the basis of thermodynamics and kinetics, the for marion reaction of the complex was discussed.     

从《含能材料热谱集》中的DSC谱采集数据和计算动力学参数的几个问题

报道了从《含能材料热谱集》中的DSC谱采集数据和计算动力学参数的几个问题。     

Thermochemical Properties of Solid Complexes of Rare Earth Nitrates with Methionine

ＴｈｅｒｍｏｃｈｅｍｉｃａｌＰｒｏｐｅｒｔｉｅｓｏｆＳｏｌｉｄＣｏｍｐｌｅｘｅｓｏｆＲａｒｅＥａｒｔｈＮｉｔｒａｔｅｓｗｉｔｈＭｅｔｈｉｏｎｉｎｅＧａｏＳｈｅｎｇｌｉ（高胜利），ＹａｎｇＸｕｗｕ（杨旭武），ＲｅｎＤｅｈｏｕ（任德厚）ＳｈｉＱｉｚ...     

Measurements of Enthalpy Change of Reaction of Formation, Molar Heat Capacity and Constant-Volume Combustion Energy of Solid Complex Yb（Et2dtc）3（phen）

A ternary solid complex Yb(Et2dtc)3(phen) was obtained from the reaction of hydrous ytterbium chloride with sodium diethyldithiocarbamate (NaEt2dtc), and 1, 10-phenanthroline (o-phen·H2O) in absolute ethanol.The bonding characteristics of the complex were characterized by IR.The result shows Yb3 bands with two sulfur atoms in the Na(Et2dtc)3 and two nitrogen atoms in the o-phen.The enthalpy change of liquid-phase reaction of formation of the complex ΔrHθm (l), was determined as being (-24.838±0.114) kJ·mol-1 at 298.15 K, by an RD-496 Ⅲ type heat conduction microcalormeter.The enthalpy change of the solid-phase reaction of formation of the complex ΔrHθm (s), was calculated as being (108.015±0.479) kJ·mol-1 on the basis of an appropriate thermochemistry cycle.The thermodynamics of liquid-phase reaction of formation of the complex was investigated by changing the temperature during the liquid-phase reaction.Fundamental parameters, the activation enthalpy, ΔHθ≠, the activation entropy, ΔSθ≠, the activation free energy, ΔGθ≠, the apparent reaction rate constant k, the apparent activation energy E, the pre-exponential constant A, and the reaction order n, were obtained by a combination of the reaction thermodynamic and kinetic equations with the data from the thermokinetic experiments.At the same time, the molar heat capacity of the complex cm, p, was determined to be (86.34±1.74) J·mol-1·K-1 by the same microcalormeter.The constant-volume combustion energy of the complex, ΔcU, was determined to be (-17954.08±8.11) kJ·mol-1 by an RBC-Ⅱ type rotating-bomb calorimeter at 298.15 K.Its standard enthalpy of combustion, ΔcHθm, and standard enthalpy of formation, ΔfHθm, were calculated to be (-17973.29±8.11) kJ·mol-1 and (-770.36±9.02) kJ·mol-1, respectively.     

Cu(TO)2Cl2的制备和热力学研究（英）

根据制备过程,提出了配合物Cu(TO)2Cl2在混合溶液中的晶体生长的动力学模型。通过这个动力学模型,测定了一系列的动力学参数Ea=45.37kJ·mol-1,ln(A/s-1)=14.65,Δ≠Gm=82.11kJ·mol-1,Δ≠Hm=42.85kJ·mol-1,Δ≠Sm=131.58J·mol-1·K-1。另外,用RD496-Ⅲ型微量热计测定了该化合物在298.15K时的比热容,并计算了[Cu(TO)2]2 (aq)和Cu(TO)2Cl2(s)的标准生成焓。