The performance of a new type composite corrosion and scale inhibitor for copper was investigated by weight-loss, electrochemical and bubbling methods. The new inhibitor, DG3, comprised DG1, BTA and PBTCA. The optimum concentration of every constituent was DG1 2mg/L, BTA 3mg/L and PBTCA 5mg/L. The composite inhibitor exhibited good performance of corrosion and scale inhibition in freshwater. The corrosion rate of tin brass was 0. 0021mm/a in freshwater with DG3, better than the national standard (0. 005mm/a). DG3 could also inhibit crevice corrosion and crevice corrosion. The performance of scale inhibition of DG3 did not reduce obviously than that of PBTCA. The stabilized concentration of Ca 2+ could reach 234. 04mg/L in freshwater with DG3, similar to the effect of 5mg/L PBTCA when the temperature was 30°C.

随着金属铜及其合金在各领域的应用越来越广泛，其腐蚀与防护问题日益受到重视，而在腐蚀介质中添加缓蚀剂是解决这一问题的一个简单实用的方法。作者综述了近年来国外几种新型有机铜缓蚀剂，包括唑类、喹啉类、嘧啶类等物质，从缓蚀性能、环境保护方面对其进行了比较，介绍了不同介质中缓蚀剂的选用情况，阐述了缓蚀剂的作用机理，并展望了缓蚀剂的研究和发展方向。

用电渗析法分离化学合成的牛磺酸母液过程中,牛磺酸的流失量随着电渗析器操作电流的增加而增加,硫酸钠浓度越高,牛磺酸的流失越严重.主要是离子交换膜的微孔结构和孔内静电场减弱和离子的带动作用造成的.

The main problem of the taurine industries is the low rate of production. The massive loss is in the process of separating and refining by the traditional chemical method. We Separated and purified taurine by electrodialysis, the result showed that the purity was up to 98.5%,the ratio of what we could get from the mixture was up to 78.1%.

介绍了国内铜缓蚀剂的最新研究成果,从新型缓蚀剂的应用,缓蚀剂间的协同效应,缓蚀剂的研究方法及预处理等方面综述了目前铜及铜合金缓蚀剂的研究现状及发展动态.

详细介绍了适应有机化学实验开放式教学模式学生成绩综合评定的方法,并对这种考核方式进行分析,得出了一些结论.

The preparation process of new type carboxy1ic acid inhibitor for copper is introduced.The corrosion inhibition of copper in sea water was studied using weight-loss and polarization curve methods.The experiment showed that the carboxylic acid inhibitior had the advantage over BTA inhibitor.

教学方式的改革是教育改革的主要内容之一。开放式实验教学是对传统的封闭式的教学方式的改革，本文以《有机化合物的合成与鉴定》实验课为主，从开放式实验教学的操作办法、实际操作效果和经验与体会等方面阐述大规模开放式实验教学的探索与实践。