共查询到19条相似文献,搜索用时 171 毫秒
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以聚环氧琥珀酸(PESA)、聚丙烯酸(PAA)、水解聚马来酸酐(HPMA)、苯并三氮唑(BTA)为原料,研制出一种新型具有环保功能的复合型高效阻垢缓蚀剂。通过正交试验确定该阻垢缓蚀剂中各组分的最佳浓度为:PESA(1.0 mg/L)/PAA(1.0 mg/L)/HPMA (0.6 mg/L)/BTA(0.5 mg/L)。分别采用鼓泡法、电化学试验和旋转挂片腐蚀试验研究了其阻垢缓蚀性能。试验结果表明,该阻垢缓蚀剂的阻垢率为92%,对A3碳钢、铜、不锈钢的缓蚀率分别达到了83%、97%、99%,动态模拟试验结果也显示该阻垢缓蚀剂满足循环冷却水运行要求。 相似文献
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以丁二酸、苹果酸(w= 2.00%)为活化剂,乙二醇、异丙醇和乙二醇丁醚(w= 3.00%)为助溶剂,聚乙二醇-6000(w= 0.25%)为成膜剂,咪唑(IM)、苯并咪唑(BIA)和苯并三氮唑(BTA)分别为缓蚀剂,配制系列水基免清洗助焊剂。用静态失重法、电化学阻抗谱法和扫描电子显微镜等方法研究了三种缓蚀剂对金属铜的缓蚀作用。结果表明:随三种缓蚀剂含量的增加,缓蚀率均表现出先提高后降低的趋势。其中BTA的添加量为0.08%时,缓蚀率达 88.78%,金属膜电阻Rf 达1.25×106 Ω·cm2,缓蚀效果最佳。研究还表明:缓蚀剂总量为0.08%时,BIA和BTA复配(0.04%BIA + 0.04% BTA),缓蚀率达94.25%,Rf 达2.26×106 Ω·cm2,显示出明显的缓蚀协同效应。助焊剂铺展实验也表明,复配缓蚀剂的最佳添加量为0.04% BIA和0.04% BTA。 相似文献
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通过实验优选了环保型水性免清洗助焊剂所用的活化剂、成膜剂和表面活性剂等组分。采用交流阻抗法确定了缓蚀剂苯并三氮唑(BTA)的最佳配比,探究了体系中各组分对助焊剂缓蚀性能的影响。结果表明,酸–胺复配可以降低助焊剂的腐蚀性,而缓蚀剂BTA能显著提高助焊剂体系的缓蚀性能。当苹果酸和己二酸以1∶5的物质的量之比与三乙醇胺复配,n复配酸∶n三乙醇胺=11∶1,且酸–胺复合液的质量分数为3.15%、表面活性剂聚乙二醇2000的质量分数为0.2%、缓蚀剂BTA的质量分数为0.05%,助溶剂异丙醇和乙二醇丁醚的质量分数均为1.5%,成膜剂聚乙烯醇的质量分数为0.2%时,所制备的助焊剂体系的缓蚀性能最佳,膜电阻最大,为6.2×105Ω·cm2。该助焊剂体系对基底金属铜板的腐蚀性较弱。 相似文献
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聚天冬氨酸和钨酸钠复配对模拟水中白铜(B10)的缓蚀作用 总被引:2,自引:0,他引:2
采用交流阻抗法和极化曲线法,研究了两种环境友好型水处理药剂聚天冬氨酸和钨酸钠的单一配方及其复配对模拟水中白铜(B10)的缓蚀效果。研究表明,聚天冬氨酸和钨酸钠各自的单一配方对于B10均具有一定的缓蚀效果,其中聚天冬氨酸质量分数为9×10-6时,对B10的缓蚀效果最佳,缓蚀率为65.0%;钨酸钠质量分数为20×10-6时,缓蚀效果最佳,缓蚀率为53.8%。缓蚀剂总质量分数为20×10-6,聚天冬氨酸与钨酸钠的质量比为1∶6时,对B10的缓蚀效果最佳,缓蚀率为89.0%,且具有缓蚀协同效应。 相似文献
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以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、缓蚀剂A、锌盐、抗坏血酸为原料进行复配,开发出一种复合型无磷缓蚀阻垢剂。通过静态阻垢实验、旋转挂片腐蚀实验、动电位电化学测试实验对配方进行筛选和测定。结果表明在各组分质量比为:2-丙烯酰胺基-2-甲基丙磺酸(AMPS):苯并三氮唑:锌盐:缓蚀剂A=5:0.3:1.2:4,复合型无磷缓蚀阻垢剂质量浓度为40mg/L时,缓蚀率达到92.89%,阻垢率达到95.12%。通过与传统含磷配方对比,该复合型无磷缓蚀阻垢剂与传统含磷配方缓蚀率相当,阻垢率提高1.91%,成本降低16.67%。由于该配方无磷,不会造成环境富营养化,具有明显环境与经济效益。 相似文献
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合成了氯化苄基喹啉铵(QA),评价了其在盐酸介质中对N80钢的缓蚀性能,分别探讨了丙炔醇(BCC)和JHC-2对QA的协同效应,研究了非离子表面活性剂OP-10对二元复配缓蚀剂体系的增效作用,通过极化曲线和电化学阻抗实验研究了盐酸介质中QA的电化学行为。结果表明:盐酸介质中QA对N80钢的缓蚀作用明显,用量为200mg·L-1时对N80钢的缓蚀率达到93%以上;BCC、JHC-2对QA的缓蚀性能具有协同效应,最佳配比(mg·L-1)QA∶BCC(JHC-2)为150∶50;非离子表面活性剂OP-10对二元复配缓蚀剂体系有明显增效作用,最佳配比(mg·L-1)QA∶BCC(JHC-2)∶OP-10为150∶50∶20。 相似文献
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Jianxin Chen Cai Wang Jian Han Baisong Hu Chongbin Wang Yunlong Zhong Hao Xu 《应用聚合物科学杂志》2019,136(15):47242
Green polymers as corrosion inhibitors are gradually used to protect metal in solution environment. A polyaspartic acid threonine derivative (PASP-Thr) was synthesized and its structure was characterized by Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance. The corrosion inhibition effect of polyaspartic acid (PASP) and PASP-Thr on carbon steel in simulated cooling water was investigated by weight loss tests and electrochemical measurements. Experimental results show PASP-Thr as a mixed-type inhibitor exhibits higher corrosion inhibition efficiency than PASP, and the inhibition efficiency of PASP-Thr reached 93.06% at the dosage was 200 mg L−1. The carbon steel surface in different situations was analyzed using atomic force microscope, scanning electronic microscope/energy dispersive X-ray, and FTIR, demonstrates the formation of a protective film on carbon steel surface. The inhibition effect of PASP-Thr was primarily attributed to the protective film formed on steel surface by physical and chemical adsorption. Moreover, quantum chemical calculation elaborated the relationship between the inhibition efficiency and the PASP-Thr molecular structure. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47242. 相似文献
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Inhibition of mild steel corrosion in groundwater by pyrrole and thienylcarbonyl benzotriazoles 总被引:1,自引:0,他引:1
D. Gopi K. M. Govindaraju V. Collins Arun Prakash V. Manivannan L. Kavitha 《Journal of Applied Electrochemistry》2009,39(2):269-276
The inhibition efficiency of Zn2+, 3-phosphonopropionic acid (3-PPA), benzotriazole (BTA) and two synthesized benzotriazole derivatives namely 1-(2-pyrrole
carbonyl) benzotriazole (PCBT) and 1-(2-thienylcarbonyl) benzotriazole (TCBT) were evaluated as inhibitors for the corrosion
of mild steel in ground water. The inhibition efficiencies of PCBT and TCBT in combination with Zn2+ and 3-PPA were also investigated and the results were compared with BTA. In order to study the corrosion rate and inhibition
efficiency we employed potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Further characterization
using Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) demonstrates the adsorption of inhibitor
and the formation of corrosion products on the mild steel surface, respectively. Combination of PCBT along with Zn2+ and 3-PPA shows better corrosion inhibition efficiency than other inhibitor combinations and the individual inhibitors. 相似文献