为了解磺酸盐添加剂中的有效成分,需要测定稀释油的含量。分析稀释油含量的方法有薄膜渗析法、化学法和抽提-液体色谱法等,这些方法消耗试剂多,操作繁复,分析时间长,其中薄膜渗析法还不能适用于中性磺酸盐。用热天平法分析磺酸盐添加剂中稀释油含量,不用试剂,分析时间短,且适用于任何金属类型不同碱值的磺酸盐添加剂。 In order to understand the active ingredient in the sulfonate additive, the content of the diluent oil needs to be measured. Thin-layer dialysis, chemical and extraction-liquid chromatography methods are used to analyze the content of diluent oil. These methods consume more reagents, complicated operation and longer analysis time. Thin-layer dialysis is not suitable for neutral sulfonate. Analysis of sulfonated salt additives by thermogravimetric method does not require reagents, analysis time is short, and is suitable for sulfonate additives of different base types for any metal type.