缓蚀剂和稠化剂在酸液中配伍性的研究

配制稠化酸使用的缓蚀剂与稠化剂的配伍性十分重要。如两种添加剂完全不配伍，则配成的酸液可发生絮凝、沉淀等分相现象，或粘度剧烈升高，甚至失去流动性。本文报导了现场和实验室遇到的一些实例。流变性能在正常范围的稠化酸，当所用缓蚀剂与稠化剂不完全配伍时，其腐蚀速度高于相应的非稠化酸，如本文报导的４对国产缓蚀剂稠化剂配制的稠化盐酸便是如此。

炔醇的应用与生产

本文介绍了炔醇的应用、生产方法和市场。炔醇类化合物是优良的非离子表面活性剂和高温浓酸条件下的钢铁缓蚀剂 ,生产工艺简单 ,在常压和接近常温下合成 ,产率高。除丙炔醇和丁炔二醇外 ,国内尚无其它炔醇生产。炔醇用途广泛 。

New Synthesized （3-（3,4-dimethoxyphenyl）isoxazole-5- yl） Methanol as Corrosion Inhibitor on Steel in 1 M HCI

The inhibition of corrosion of steel in molar hydrochloric acid solution by new synthesized DMI （（3-（3,4-dimethoxyphenyl）isoxazole-5-yl） methanol） compound is studied by weight loss and electrochemical polarization measurements. The two methods give consistent results. The polarization curves indicate that the DMI compound acts as mixed-type inhibitor. This compound is efficient inhibitor. The inhibition efficiency increases with the increase of inhibitor concentration to reach 96% at 10-3 M for DMI. The temperature effect on the corrosion behavior of steel in 1 M HCI with and without the DMI compound at 10-3 M is studied in the temperature range from 298 to 318 K. The adsorption of inhibitor on the steel surface is found to obey the Frumkin adsorption isotherm model. From the adsorption isotherm, some thermodynamic data for the adsorption process （f, K and △Gads） are calculated and discussed.

柚子皮有效成分的提取及其缓蚀性能研究

以乙醇溶液为提取剂,采用索氏提取法提取新鲜柚子皮中的有效成分作为酸液缓蚀剂。通过4因素3水平正交实验得出了具有最佳收率的提取条件。性能评价实验表明,柚子皮提取物作为酸液缓蚀剂具有良好的缓蚀性能。1mol/L盐酸介质中提取物浓度为12g/L时,A3钢片在30℃及45℃条件下的缓蚀率分别为89.24%和75.00%。对提取物作为酸液缓蚀剂的机理进行了分析,吸附等温线分析结果显示,提取物在A3钢表面的吸附模式为典型的单分子层吸附。电化学阻抗和极化曲线分析结果表明,酸液中提取物浓度为12g/L时,钢片的缓蚀率分别为86.24%及79.10%,且柚子皮提取物表现为混合型缓蚀剂,能够同时抑制A3钢片的阴极和阳极反应。