共查询到16条相似文献,搜索用时 66 毫秒
1.
异丙烯膦酸—丙烯酸共聚物的阻垢效果 总被引:12,自引:2,他引:12
本文以异丙烯膦酸和丙烯酸为单体,合成了异丙烯膦酸-丙烯酸共聚物,探讨了共聚物浓度,pH值,钙离子浓度及温度对共聚物阻垢性能的影响,探讨了共聚物对氧化铁分散能力的影响。结果表明,异丙烯膦酸-丙烯酸共聚物不仅具有优异的阻垢性能,而且对氧化铁具有较好的分散能力,是一种良好的水质稳定剂。 相似文献
2.
异丙烯膦酸-丙烯酸共聚物对硫酸钙的阻垢性能研究 总被引:3,自引:0,他引:3
本文研究了异丙烯膦酸-丙烯酸共聚物对硫酸钙的阻垢性能,探讨了共聚物浓度,钙离子浓度,硫酸根浓度,pH值,温度等因素对硫酸钙阻垢性能的影响,并用扫描电镜研究了不同共聚物用量下硫酸钙的结晶形态,在共聚物浓度为20mg/L时,硫酸钙晶体产生了严重的畸变;结果表明该共聚物对硫酸钙具有良好的阻垢性能。 相似文献
3.
有机膦酸对碳钢缓蚀性能及机理研究 总被引:1,自引:0,他引:1
采用失重法评定了氨基三亚甲基膦酸(ATMP)、羟基乙叉二膦酸(HEDP)、乙二胺四亚甲基膦酸(EDTMP)、二乙烯三胺五甲叉膦酸(DTPMP)、羟基膦酰基乙酸(HPAA)及2-磷酸丁烷-1,2,4-三羧酸(PBTC)在酸性条件下对碳钢的缓蚀性能,并结合电化学极化曲线研究了有机膦酸的缓蚀机理。结果表明:DTPMP、HEDP、ATMP、PBTC及HPAA为阳极型缓蚀剂,其缓蚀效率由大到小为:DTPMP〉EDTMP〉HEDP〉ATMP〉PBTC〉HPAA。 相似文献
4.
5.
丙烯酸、丙烯磺酸钠共聚物的合成及应用 总被引:3,自引:0,他引:3
研究了丙烯酸(AA)、丙烯磺酸钠(SA8)共聚反应的试验条件,并通过红外光谱、残留单体分析证实了共聚反应的有效性,探讨了单体配比、引发剂用量、反应温度与时间对共聚物阻垢性能的影响。 相似文献
6.
研究了丙烯酸(AA),丙烯磺酸钠(SAS)共聚反应的试验条件,并通过红外光谱,残留单体分析证实了共聚反应的有效性,探讨了单体配比,引发剂用量,反应温度与时间对共聚物阻垢性能的影响。 相似文献
7.
8.
9.
10.
本文从不同合成路线研究了异辛基膦酸单异辛酯的制备,且就合成过程中中间产物及最终产物的分析检定,对不同方法作了探讨。 相似文献
11.
The corrosion behavior of 18% Ni M250 grade maraging steel under weld-aged condition was investigated in sulfuric acid medium of different concentrations (0.1–2 M) at different temperatures (30°–60°C). Electrochemical measurements were carried out using the potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The results showed an increase in the corrosion rate with the increases in temperature as well with increase in the concentration of the corrosion medium. The results obtained from the Tafel extrapolation technique and electrochemical impedance spectroscopy were in good agreement. Activation parameters were evaluated using the Arrhenius equation and transition state equation. The surface morphology of the corroded specimen was compared with that of the un-corroded sample by using scanning electron microscopy (SEM). 相似文献
12.
LLDPE熔融接枝丙烯酸及其应用的研究 总被引:2,自引:0,他引:2
以丙烯酸(AA)为接枝单体在Brabender中对LLDPE进行熔融接枝改性研究,考察了共混温度、过氧化二异丙苯(DCP)用量、AA用量以及混合时间对接枝率的影响,结果表明控制适当的反应条件率可达9%,而且反应温度以220℃左右为宜,DCP用量不宜过高,以免引起严重的交联反应,研究LLDPE-g-AA对LLDPE/淀粉可降解体系的增容效果表明,接枝物提高了LLDPE/淀粉体系的拉伸强度,并且与淀粉 相似文献
13.
14.
本文简要介绍了柔性印刷电路(FPC)基材及其所用胶粘剂的种类和性能,对目前国外FPC工业中乳液型丙烯酸酯胶的应用和发展作了重点概括。 在FPC基材的生产中,乳液型内烯酸酯胶较其他类型的胶有优良电性能、物理性能和加工使用性能,因此被国外著名的生产厂家采用,由此生产的FPC基材已被广泛地应用于军工和一般电子设备中。因此这种胶也将是我国FPC基材工业要采用的主要胶种之一。 相似文献
15.
M. Benabdellah A. Dafali A. Aouniti M. Rhomari A. Raada 《Chemical Engineering Communications》2013,200(10):1328-1341
The inhibition of corrosion of steel by two P-containing compounds, sodium methyldodecyl phosphonate and sodium methyl (11-smethacryloyloxyundecyl) phosphonate, in hydrochloric acid has been investigated at various temperatures using electrochemical techniques (impedance spectroscopy (EIS), potentiodynamic polarization) and weight loss measurements. Inhibition efficiency (E%) increased with phosphonate concentration. Adsorption of inhibitors on the steel surface in 1 M HCl follows the Langmuir isotherm model. EIS measurements showed that the dissolution process of steel occurred under activation control. Polarization curves indicated that inhibitors tested acted as cathodic inhibitors. The temperature effect on the corrosion behavior of steel in 1 M HCl without and with the inhibitor was studied in the temperature range from 313 to 353 K. The adsorption free energy and activation parameters for the steel dissolution reaction in the presence of phosphonates were determined. 相似文献
16.
M. Benabdellah A. Dafali B. Hammouti A. Aouniti M. Rhomari A. Raada O. Senhaji J. J. Robin 《Chemical Engineering Communications》2007,194(10):1328-1341
The inhibition of corrosion of steel by two P-containing compounds, sodium methyldodecyl phosphonate and sodium methyl (11-smethacryloyloxyundecyl) phosphonate, in hydrochloric acid has been investigated at various temperatures using electrochemical techniques (impedance spectroscopy (EIS), potentiodynamic polarization) and weight loss measurements. Inhibition efficiency (E%) increased with phosphonate concentration. Adsorption of inhibitors on the steel surface in 1 M HCl follows the Langmuir isotherm model. EIS measurements showed that the dissolution process of steel occurred under activation control. Polarization curves indicated that inhibitors tested acted as cathodic inhibitors. The temperature effect on the corrosion behavior of steel in 1 M HCl without and with the inhibitor was studied in the temperature range from 313 to 353 K. The adsorption free energy and activation parameters for the steel dissolution reaction in the presence of phosphonates were determined. 相似文献