单体酸组成分析及在润滑添加剂方面的应用

采用GC/MS方法测定了单体酸的主要组成:用甲酯化后的试样进行GC/MS分析,鉴定出肉豆蔻酸(12.16%)、棕榈酸(8.51%)、十八稀酸(25.53%)、硬脂酸(32.72%)等15种物质。从评价铝材轧制油添加剂的性能指标——相容性、润滑性、抗磨性、退火清洁性和抗氧化性5个方面,考察了将单体酸作为或加工成为铝材轧制油添加剂的可行性。

Composition analysis of monomer acid and application as lubricant additives

The chemical composition of fatty acids in monomer acid was determined by GC/MS.After the monomer acid sample was etherified by methanol,the relative contents of fatty acids in it were analyzed with GC/MS.Fifteen components(such as myristic acid,palmitic acid,oleic acid and stearic acid) were identified.The analysis results showed that tetradecanoic acid content was 12.16%,hexadecanoic acid content was 8.51%,octadecenoic acid content was 25.53% and octadecanoic acid content was32.72%.The feasibility of using the monomer acid as lubricant additive in aluminium rolling was studied.The rolling oil performance was comprehensively evaluated by taking the following five performance indices: compatibility,lubrication,tribological property,annealing property and anti-oxidation.The results showed that the comprehensive effects of the additive were excellent.