共查询到19条相似文献,搜索用时 171 毫秒
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以聚天冬氨酸、聚环氧琥珀酸、葡萄糖酸钠以及增效剂为原料,制备了一种新型的缓蚀阻垢剂。采用挂片腐蚀和静态阻垢实验,研究了其缓蚀和阻垢性能,结果表明,该缓蚀阻垢剂的质量浓度为100 mg/L时,缓蚀率可达89.04%,具有良好的缓蚀性能,其阻垢效果均明显优于油田常用缓蚀阻垢剂。 相似文献
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本文介绍了有机磷类阻垢剂和高聚物类阻垢剂的研究进展及其阻垢机理和优缺点,详细描述了绿色阻垢剂聚环氧琥珀酸的合成、阻垢性能及复配聚环氧琥珀酸的阻垢、缓蚀性能,并对其生物降解性进行了介绍。 相似文献
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新型缓蚀阻垢剂的开发 总被引:1,自引:1,他引:0
聚环氧琥珀酸(PESA)是新一代可生物降解的绿色阻垢剂.研制了一种以PESA为主要成分的缓蚀阻垢剂.通过旋转挂片法和碳酸钙沉积法对水处理剂复合配方进行了筛选,找到缓蚀阻垢剂最佳配方,并验证得知不同浓缩倍数下该水处理剂的缓蚀阻垢性能都较好. 相似文献
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采用静态挂片失重法和电化学法考察了缓蚀剂的缓蚀性能,讨论了缓蚀剂加量、温度对腐蚀速率的影响。静态腐蚀评价可知:结果表明,温度为90℃时,在15%工业盐酸介质中N80钢片的腐蚀速率随着缓蚀剂加量的增大而减小、随着温度的升高而增大。当缓蚀剂的加量为1.0%时,仍可获得光亮钢片表面,该缓蚀剂对N80钢片的缓蚀率可达到98%。电化学极化曲线和交流阻抗图谱结果表明:该缓蚀剂对金属腐蚀的阴、阳极过程均有抑制作用,属于混合型缓蚀剂,缓蚀机理属于"负催化效应"。通过电镜扫描照片可知腐蚀容易发生在钢片有局部缺陷的地方,且缓蚀剂的加入可有效的在钢片表面形成保护膜,阻止了腐蚀介质与钢片的接触,抑制金属的腐蚀。 相似文献
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Amino acid modified polyaspartic acids were evaluated as calcium-scale inhibitors. Feasibility of scale inhibition experiments was analyzed by molecular dynamics simulation and Gaussian optimization, and the scale inhibition mechanism was theoretically analyzed. Scale inhibition performance was studied by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, static scale inhibition experiments, and electrochemical performance testing, which provided an experimental basis for the molecular dynamics simulation. The experimental results showed that Arg-SA-PASP has better scale inhibition and corrosion inhibition performance than His-SA-PASP. The scale inhibition effect increased with increasing concentration. Electrochemical tests indicated that Arg-SA-PASP is an excellent scale and corrosion inhibitor. 相似文献
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The mechanism of inhibition of carbon dioxide (CO2) corrosion of high purity iron by cetyl trimethyl ammonium bromide (CTAB) was investigated by contact angle, polarization resistance and X-ray photoelectron spectroscopy (XPS). The wetting properties, corrosion inhibitor performance and the adsorption of the inhibitor on a high purity iron surface were investigated. Test conditions during corrosion testing were 25 °C, 3 wt% NaCl brine, initial pH 3.9 and 1 bar CO2 partial pressure. The samples were precorroded for 5 h before inhibitor was added.The inhibitor performance data showed that addition of CTAB significantly reduced the corrosion rate of high purity iron. The decreased corrosion rate seems to be caused by a blocking effect, where the CTAB forms a surface structure on the iron surface. Chemisorption of the CTAB molecules, which could lead to gradually increasing inhibitor efficiency, might be the reason for the slowly decreasing corrosion rate. The XPS data confirmed a gradual accumulation of inhibitor on the surface but did not show any distinct change between different mechanisms at different exposure times. The contact angle measurements showed that the iron was water wet, with a contact angle higher than 160°, at all CTAB concentrations. 相似文献
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抗水性油溶性缓蚀剂的研究与应用 总被引:1,自引:0,他引:1
油溶性缓蚀剂普遍用于金属制件和设备的防腐处理。将石油磺本钡和氧化石油脂钡皂溶于煤油或机油中制得缓蚀剂。分析了石油磺酸钡和氧化石油脂钡皂的协同作用机理。通过盐雾试验、湿热试验和水置换性试验研究了油溶性缓蚀剂的防锈性能。结果表明:石油磺酸钡和氧化石油脂钡皂的协同作用使得缓蚀剂具有优良的防锈效果,抗水性也明显提高。 相似文献