二(2-氨基乙基)-(3-氨基丙基)胺的合成新方法

以二(氰基甲基)胺及丙烯腈为原料，通过亲核加成、氢化反应合成了不等臂有机多胺化合物二(2-氨基乙基)-(3-氨基丙基)胺，标题化合物及其中间产物经多种谱学手段表征确证。在优化条件下，产物的总收率为67％，含量99.5％(HPLC)。     

γ-Al2O3载体制备中水洗脱氯工艺的连续化

通过正交实验，研究了γ-Al₂O₃载体制备中拟薄水铝石水洗的连续化。方差分析表明，第一阶段洗水的pH是影响脱氯效果的关键因素，初步得出水洗连续化的优化条件。与国内外传统的间歇式水洗相比，收率从80%提高到99.7%，所需洗水量仅为原来的1/3，而处理500 kg物料的生产周期也从10 h缩短到2～3 h。     

提高100%无烟煤煅烧熟料早期强度的探索

1997年投产的国内首条100%燃无烟煤生产线——龙岩三德2000t/d熟料线的熟料3d强度一直偏低,平均仅为25.5MPa(新标准)。通过对3d强度因素及其相关性分析,排序为w(C2S)>熟料KH值>生料细度>入窑生料的w(Al2O3)。在此基础上,提出了调整配比,提高煤粉和生料细度质量指标以及提高石灰石和燃煤质量等一系列技术措施。     

2-甲基-1,3-丙二醇水溶液的表面性质研究

采用最大泡压法测定了常压下纯液体2-甲基-1,3-丙二醇(MPO)及不同浓度MPO水溶液在298.15~367.7 K范围的界面张力。实验结果表明,纯MPO及其水溶液的界面张力σ随温度升高而呈线性减小;恒温下σ随浓度的增加呈幂函数递减。MPO水溶液的表面层发生正吸附,与理论上低脂肪醇类表面张力的性质符合。而且低浓度下MPO水溶液的吸附等温线呈直线,与G ibbs吸附等温式描述的规律相吻合。     

HNC-1新型光敏剂的合成与表征

合成了一种光敏剂2-三氯甲基-5-[β-(2-苯并呋喃)乙烯基]-1，3，4-噁二唑(HNC-1)。并用紫外光谱、红外光谱、核磁共振(氢、碳)谱，对产物进行了结构表征。     

Dielectric properties of SBR vulcanizates loaded with HAF carbon black and BaTiO3 ceramics

The influence of HAF carbon black and BaTiO₃ ceramic powder contents in SBR vulcanizates on the dielectric constant (ε′) at different frequencies and at fixed temperature of 303 K is studied well in this article. The temperature dependence of the ac conductivity (σ_ac) was also studied. ε′ appreciably decreases as frequency increased for both filled and unfilled SBR vulcanizates. At each frequency, ε′ gradually decreased with BaTiO₃ loading, but its change at any fixed frequency with BaTiO₃ filler loading is not uniform. For HAF group ε′ (at loading ≥ 40 phr), drops rapidly with frequency. Meanwhile, it increased appreciably beyond a certain HAF filler loading (≈ 20 phr). Experimental values of the dielectric constant of both BaTiO₃ and HAF contents were compared with those calculated by using Tsangaris, Clausius and Bruggman models. Tsangaris model with simple modifications was applied and a fairly good agreement was obtained. The HAF particles or aggregates was found to take the shape of oblate ellipsoids with the minor axes parallel to the applied frequency as detected from the decreasing behavior of the depolarizing factor (Y) with HAF contents. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2227–2234, 2007     

3-取代苯基-5-羟基-5-三氟甲基异噁唑啉的合成

3 取代苯基 5 羟基 5 三氟甲基异口恶唑啉是合成具有异口恶唑结构的原卟啉原氧化酶抑制剂类除草剂的重要中间体。通过以下途径制得4个具有不同取代基的异口恶唑啉中间体:首先,在回流状态,n(甲醇钠)∶n(取代苯乙酮)=2∶1的甲醇钠存在下,取代苯乙酮与三氟乙酸乙酯缩合得到取代苯基 4,4,4 三氟 1,3 丁二酮;后者可在室温下,于二氯甲烷溶剂中,用氯化硫酰氯化,在侧链上引入氯原子;最后,以乙酸作溶剂,回流下,具有不同取代基的苯基 1,3 丁二酮与盐酸羟胺闭环得到产物。反应总收率大于95%。产品结构经质谱、核磁共振氢谱、碳谱确认正确。     

鱼尾型机头中熔体流动的三维流场分析

本文利用ANSYS和MATLAB软件，对鱼尾型片材机头中熔体的速度、压力、剪切应力和粘度的分布进行三维有限元模拟和分析。探知了熔体在流道内的运动规律及特点并分析其原因，对口模设计具有定的指导作用。     

Novel electrically conductive and ferromagnetic composites of poly(aniline‐co‐aminonaphthalenesulfonic acid) with iron oxide nanoparticles: Synthesis and characterization

Nanocomposites of iron oxide (Fe₃O₄) with a sulfonated polyaniline, poly(aniline‐co‐aminonaphthalenesulfonic acid) [SPAN(ANSA)], were synthesized through chemical oxidative copolymerization of aniline and 5‐amino‐2‐naphthalenesulfonic acid/1‐amino‐5‐naphthalenesulfonic acid in the presence of Fe₃O₄ nanoparticles. The nanocomposites [Fe₃O₄/SPAN(ANSA)‐NCs] were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X‐ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, elemental analysis, UV–visible spectroscopy, thermogravimetric analysis (TGA), superconductor quantum interference device (SQUID), and electrical conductivity measurements. The TEM images reveal that nanocrystalline Fe₃O₄ particles were homogeneously incorporated within the polymer matrix with the sizes in the range of 10–15 nm. XRD pattern reveals that pure Fe₃O₄ particles are having spinel structure, and nanocomposites are more crystalline in comparison to pristine polymers. Differential thermogravimetric (DTG) curves obtained through TGA informs that polymer chains in the composites have better thermal stability than that of the pristine copolymers. FTIR spectra provide information on the structure of the composites. The conductivity of the nanocomposites (～ 0.5 S cm^?1) is higher than that of pristine PANI (～ 10^?3 S cm^?1). The charge transport behavior of the composites is explained through temperature difference of conductivity. The temperature dependence of conductivity fits with the quasi‐1D variable range hopping (quasi‐1D VRH) model. SQUID analysis reveals that the composites show ferromagnetic behavior at room temperature. The maximum saturation magnetization of the composite is 9.7 emu g^?1. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007     

Impact of “Super Acid” like filler on the properties of a PEGDME/LiClO4 system

Composite polymer electrolyte based on a new class of filler added to a PEGDME/LiClO₄ model system has been investigated. “Ceramic super acids” used consist of grafted SO₄²⁻ groups on Al₂O₃ particles surface obtained by calcinations route. Conductivity, DSC and FT-IR measurements performed on such composite electrolytes, when compared to the model PEGDME/LiClO₄ electrolyte, showed only slight improvement of their inner characteristics. In contrary, Li/Li symmetric cells study, by means of impedance spectroscopy, has presented a spectacular decrease of the interfacial resistance compare to the model electrolyte. This result opens a new pathway of investigation to master the lithium metal/polymer electrolyte interface.