钼酸盐缓蚀剂研究进展及发展趋势

从钼酸盐的缓蚀机理、与其他缓蚀剂的协同缓蚀效应等方面,综述了国内外钼酸盐缓蚀剂的研究进展,并展望了钼酸盐缓蚀剂今后的研究方向.     

钼酸盐系缓蚀剂对储油罐底板的防护作用

通过动电位扫描测量极化曲线,研究了钼酸盐系缓蚀剂在含5 g/L C1-溶液中对Q 235铜的缓蚀性能.分析结果表明:由钼酸盐为主盐,与硅酸盐、磷酸盐、有机胺A复配而成的缓蚀剂,可以达到成本低、高缓蚀率的效果.通过失重法实验,对该配方进行了验证,复配缓蚀剂的缓蚀率接近88.4%,明显高于单组分缓蚀剂的.     

钼系复合型阻垢缓蚀剂的缓蚀性能研究

通过极化阻率和极化曲线测定，研究了钼酸盐在含有有机膦酸盐和阻垢分散剂的复合配方中对碳钢的缓蚀作用。筛选了含低量钼酸盐的高效阻垢缓蚀剂配方，并通过旋转挂片实验和静态阻垢实验测定了在高氯离子水样中钼系复合配方对碳钢的缓蚀作用及对碳酸钼的阻垢效果。     

钼酸盐系列缓蚀剂在中性介质中对A20碳钢缓蚀的极化曲线研究

通过电化学极化曲线实验,作者主要研究了钼酸盐系列缓蚀剂在自来水 中对A20碳钢铁缓蚀情况,指出钼酸盐与正磷酸盐的复配可以达到低浓度、高缓蚀率的效果,而与锌盐之间则不存在协同效应。     

钼酸盐和钨酸盐在HCl中对冷轧钢的缓蚀作用

用失重法和动电位极化曲线法研究了在0．2mol／L HCl介质中,钼酸钠（Na2MoO4）、钨酸钠（Na2WO4）对冷轧钢片的吸附及其缓蚀作用。实验结果表明,在酸性溶液中,钼酸盐、钨酸盐均对冷轧钢片具有较好的缓蚀作用,而且用量很低。缓蚀剂在钢表面的吸附符合Langmuir吸附方程。在相同条件下,对比了钼酸钠、钨酸钠对冷轧钢的缓蚀作用,发现缓蚀率取决于缓蚀剂的质量浓度,当缓蚀剂浓度极低时缓蚀率排序为：钼酸钠〈钨酸钠,但在较大缓蚀剂质量浓度范围内钼酸钠表现出优越的缓蚀性能。动电位极化曲线表明,钼酸盐、钨酸盐在HCl中为混合抑制型缓蚀剂。     

钼酸盐复合缓蚀剂对海冰融水中碳钢的缓蚀作用

通过正交试验筛选、复配以钼酸盐为主剂的多元复合缓蚀剂,以失重法和极化曲线法研究了该钼酸盐复合缓蚀剂在海冰融水中对Q235碳钢的缓蚀效果,并对其在高浓缩倍数(2~5倍)海冰融水中的缓蚀作用进行了验证。结果表明:该钼酸盐复合缓蚀剂在海冰融水中对碳钢的缓蚀效果良好,缓蚀率最高达到99.35%;该钼酸盐复合缓蚀剂为阳极抑制型缓蚀剂。     

多组分复合缓蚀剂缓蚀作用的研究

钼酸盐与Ｎ－丙烯酰基－Ｎ－甲基丙磺酸－苯乙烯磺酸钠共聚物复配组成多组分缓蚀剂体系，对碳钢和海军铜具有较好的缓蚀效果。     

浮法玻璃生产线闭式循环软化水中缓蚀剂的应用

浮法玻璃生产过程中,选用闭式循环软化水时,采用钼系复合缓蚀剂(钼酸盐、磷酸盐及锌盐按适当比例进行组合)缓蚀效果良好。更由于钼系复合缓蚀剂中含有大量的磷酸盐及锌盐,三者之间有着很好协同复合作用,不但大大降低了钼酸盐的投加量,其缓蚀作用也有很大的提高,并且,水中酸碱度有较大的变化时,钼系复合缓蚀剂同样发挥很好的缓蚀效果。     

Inhibitor Application in Closed Cycle Demineralized Water on Float Glass Line

浮法玻璃生产过程中,选用闭式循环软化水时,采用钼系复合缓蚀剂（钼酸盐、磷酸盐及锌盐按适当比例进行组合）缓蚀效果良好。更由于钼系复合缓蚀剂中含有大量的磷酸盐及锌盐,三者之间有着很好协同复合作用,不但大大降低了钼酸盐的投加量,其缓蚀作用也有很大的提高,并且,水中酸碱度有较大的变化时,钼系复合缓蚀剂同样发挥很好的缓蚀效果。     

缓蚀剂文摘

缓蚀剂文摘９７－０８乙醇胺—钼酸盐对碳钢的缓蚀作用在去离子水中研究了三种乙醇胺—钼酸盐缓蚀剂对碳钢的缓蚀作用。采用的试验方法包括失重法、极化曲线法、离子电位法和ＸＰＳ法等。合成的三种缓蚀剂对碳钢都有很好的缓蚀效果，缓蚀剂上的有机和无机功能团显示出优异...     

电力电缆用膨胀型防火涂料的研制

依照电力电缆的特点和膨胀型防火涂料的膨胀防火机理,筛选涂料各组分原料。通过实验, 确定出合理的涂料配方。所生产的涂料经检测,各项理化指标均达到要求,防火性能达到了一级。     

Structural,mechanical, and gas barrier properties of poly(ethylene terephthalate) nanohybrid using nanotalc

Amorphous poly(ethylene terephthalate) (PET)/nanotalc nanohybrids have been prepared through solution casting route. The fine dispersion of nanotalc clay in the polymer matrix has been examined through transmission electron microscopy (TEM). The intercalation and interaction of nanoclay have further been confirmed using X-ray diffraction, ultraviolet, and Fourier transform infrared techniques. The thermal stability has been tested via thermogravimetric analysis and nanohybrids have been found thermally stable. The glass-transition temperature has been further confirmed through DTA and differential scanning calorimetry analysis which has been increased in the presence of nanotalc arising from greater interaction. The nanohybrids have been tested for their mechanical performances and have been found to have improved mechanical responses for nanotalc-filled nanohybrids. The modulus has been increased whereas toughness has been compromised meagerly. The modulus values have been theoretically predicted using various micromechanical models. The microhardness of the nanohybrids has been examined through Vicker hardness test. The theoretical prediction of the hardness values has been done using different micromechanical models. The structural development upon uniaxial stretching of the samples has been studied using small-angle X-ray scattering and wide-angle ray diffraction. The stretched samples have found to have short-range ordering as well as increased blob size and better coherency in the presence of nanotalc. The aspect ratio has been increased upon stretching. The inclusion of nanotalc has induced high barrier for gas permeation as compared to pure PET. The oxygen transmission rate has been found to decrease up to 64% for 8 wt % of filler concentration. The prediction of the permeability data has been done using different models considering different aspect ratios. The permeability values have been predicted very closely and nanohybrids have been found suitable for practical applications such as packaging. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 137, 48607.     

接枝改性淀粉作为LLDPE／淀粉共混体系增容剂的研究

采用接枝改性淀粉作为LLDPE/淀粉共混体系增容剂,对其单体作用和与接枝改性PE配合作用的增容效果进行了研究,发现配合作用增容效果比较明显,体系拉伸强度可达9.77MPa,伸长率为128％,并在此基础上进一步考察了偶联淀粉与LLDPE共混的效果。     

Transition of Cs3C60 crystals with Rb impurity to the superconducting state

The statistical theory of phase transition in fullerides of alkali metals to the superconducting state has been elaborated. The calculation of the free energy of crystals has been performed on the basis of molecular-kinetics and the equilibrium equations have been examined. The critical temperature of superconductivity has been estimated, and its concentration dependence has been ascertained. The calculation results have been compared with experimental data. The numerical estimation for energetic parameters of pairing of Cooper pairs electrons has been performed.     

油田含油污水过滤器滤料原位清洗再生

通过分析发现滤料污染物主要成分为原油、硫化物等。针对污染物成分研制了有效的滤料再生剂,很好地解决了致密的混合污染物层难以清除的问题。研制了加药装置,确定了滤料原位再生工艺,现场应用取得了良好的效果。     

Third-order optical nonlinearity in single-wall carbon nanotubes

The third-order optical nonlinearity in carbon nanotubes (CNT) exposed to an intensive external electromagnetic field has been investigated. The analysis is based on the quantum kinetic equations for the density matrix of π-electrons in CNT. In the regime of weak driving field, the kinetic equations have been solved by the perturbation method and the third-order nonlinear polarizability of different achiral CNTs has been calculated. The theory elaborated has been used for the evaluation of nonlinear susceptibility of CNT-based composites. Comparison with available experimental data has been presented. In the case of high intensive driving field a nonperturbative numerical simulation of the process has been carried out in the time domain. The axial current density in CNT has been calculated. Excitation of π-plasmons in CNTs has been analyzed.     

Retarding behaviour of organic solvents in permanganate-sulphite-initiated polymerization of acrylamide

Redox polymerization of acrylamide initiated by a new redox couple, potassium permanganate-sodium sulphite, has been studied under atmospheric oxygen at 35 ± 0.2° C. The rate of polymerization has been found to vary with the half power of the redox components and the first power of the monomer concentration. The energy of activation has been calculated to be 8.29 kcal/(deg. mol.). The effect of various additives such as neutral salts and surface-active agents has been studied qualitatively. The retarding effect of organic solvents on the rate of polymerization has also been studied both qualitatively and quantitatively. An interpretation of the observed results has been proposed.     

自然通风造粒塔的运行分析

造粒塔的运行直接影响颗粒尿素的内在质量和外观质量。百叶窗的调节影响尿素的含水率和粉尘;喷头的转速调节影响到粒度和粉尘;保温蒸汽的调节影响尿素中的缩二脲含量等。该塔运行好坏是关系到尿素质量的问题。     

深层、低渗透油藏开发中后期配套技术研究及应用

深层、低渗透油藏由于其埋藏深、物性差,开发效果较差,特别是中后期随着地层能量的亏空严重,开发效果会进一步变差。本文应用层序地层学理论与方法,建立沉积微相的空间展布特征,预测砂体分布,应用数值模拟技术对剩余油的分布进行研究,选取实验井组进行试注的方法对夏70块深层低渗油藏的注水可行性进行论证,实施注水水质改性、严格的油层保护等手段,取得了较好的开发效果和显著经济效益,实现深层低渗油田开发的良性循环。     

乙烯产品中微量CO、CO2测定的探讨

本文将乙烯产品中微量的CO、CO2测定方法中的预切条件进行了改正，即将双柱预切改为单柱预切，并对色谱操作条件进行了优化。改正后的方法操作简单、基线稳定、无阀切换信号的干扰，且准确性高、重复性好，在工业分析上有很大的应用价值。