微乳液应用于金属表面油污的清洗

以十二烷基苯磺酸钠(SDBS)为表面活性剂配制了微乳液,对金属表面油污清洗进行模拟实验,考察了SDBS、Na2CO3、煤油、正丁醇用量对微乳液清洗率的影响,并从温度稳定区间范围、清洗率随温度及时间变化对不同配方进行考察,最终筛选出一种处理金属表面油污的最佳微乳液配方:SDBS含量为8％(以去离子水的质量计,下同)、Na2CO3含量为1.4％、煤油含量为12.8％、正丁醇含量为6.4％.随后,考察了缓蚀剂的种类及用量对碳钢、黄铜、铝3种金属的防护性能,最终选定以含量0.06％硅酸钠作为微乳液缓蚀剂;对制得的清洗剂进行了性能评价,其清洗率在98％左右,在实验期内碳钢、黄铜、铝表面光洁,没有明显的质量变化和生锈情况,表明该清洗剂具有优良的缓蚀防锈性能.

Microemulsion is used to clean oil stains on metal surfaces

Sodium dodecylbenzene sulfonate (SDBS) was used as a surfactant to prepare a microemulsion cleaning agent, and a simulation experiment was performed to clean the oil on the metal surface. The effect of the addition of SDBS, Na2CO3, kerosene, and n-butanol on the cleaning efficiency of the microemulsion was investigated. In addition, different formulations were investigated from the temperature stability range, the cleaning efficiency with temperature and time changes, and finally an optimized microemulsion formulation for treating metal surface oil stains was screened: SDBS 10%, Na2CO3 1.4%, kerosene It is 12.8% and n-butanol is 6.4% (both are mass fractions). The types and amounts of corrosion inhibitors were investigated for their protective performance on carbon steel, brass, and aluminum. Finally, 0.06% sodium silicate was used as the microemulsion corrosion inhibitor. The cleaning agent has good cleaning and anti-rust effects, and has a certain degree of reusability. It is a low-foam alkaline cleaning agent.