金属封孔剂用表面活性剂研究

Study on surfactants used for metal pore-sealing agent

为了筛选出适用于GF419封孔剂的最优表面活性剂,选择碳氢表面活性剂、氟表面活性剂和生物表面活性剂为研究对象,考察其单一体系和复合体系的清洗能力、净水性及其对GF419封孔剂防腐性能的影响,确定了复合表面活性剂的较佳配比为m(AEC-9Na)∶m(15-S-9)∶m(FSH)∶m(JBR215)=5∶2∶3∶15。3种表面活性剂复配后显示出良好的协同效应,清洗能力和净水性优异,并使工作液的表面张力显著降低。经该封孔剂封孔后,镀层的盐雾腐蚀时间达到96h。

Three types of surfactants, including hydrocarbon-based, fluorinated, and biological surfactants, were studied to find out an optimal surfactant composition suitable for GF419 metal pore-sealing agent. The cleaning ability and rinsing performance for single and composite surfactant systems and there effect on the anti-corrosion property of pore-sealing agent GF419 for metals were examined. A composite surfactant system containing four surfactants was determined with a mass ratio of AEC-9Na ： 15-S-9 ： FSH ： JBR215 equal to 5 ： 2 ： 3 ： 15. This composite surfactant system has excellent synergetic effect and remarkable cleansing and rinsing ability, and is able to significantly reduce the surface tension of GF419 working solution. After treating with the pore-sealing agent, the time to failure in salt spray corrosion testing of the deposit is up to 96 h.