石油炼制与化工 ›› 2025, Vol. 56 ›› Issue (9): 59-67.

• 油品与添加剂 • 上一篇    下一篇

饱和二元酸单酯型柴油抗磨剂的合成及性能研究

黄娜岚,夏鑫,蔺建民,李妍,赵梦杰,杨鹤   

  1. 中石化石油化工科学研究院有限公司
  • 收稿日期:2025-02-20 修回日期:2025-04-08 出版日期:2025-09-12 发布日期:2025-08-28
  • 通讯作者: 蔺建民 E-mail:linjm.ripp@sinopec.com
  • 基金资助:
    中国石化股份公司项目;中国石化股份公司项目

SYNTHESIS AND PERFORMANCE STUDY OF SATURATED MONOESTER-TYPE LUBRICITY ADDITIVES FOR ULTRA-LOW SULFUR DIESEL FUELS

  • Received:2025-02-20 Revised:2025-04-08 Online:2025-09-12 Published:2025-08-28

摘要: 以丁二酸酐与多种饱和脂肪醇为原料,通过酯化反应合成系列饱和二元酸单酯化合物,优选出兼具良好抗磨性能和低凝点的饱和二元酸单酯型抗磨剂化合物。结果表明,丁二酸单异构酯凝点低,且在柴油中表现出良好的抗磨性能。其中,当在超低硫柴油中的添加量(w)为200 μg/g时,丁二酸单(3,5,5-三甲基己醇)酯可显著提高柴油的润滑性能,润滑性试验中金属试验球校正磨痕直径可从646 μm下降到281 μm,且其凝点低至-50 ℃,在低温环境条件下具有一定的应用前景。

关键词: 抗磨剂, 抗磨性能, 低凝点, 二元酸单酯, 柴油

Abstract: Using various saturated dicarboxylic acids (anhydrides) and alcohols as raw materials, a series of saturated dicarboxylic acid monoester compounds were synthesized through esterification. An optimal saturated dicarboxylic acid monoester-type lubricity additive compound was selected, which has a low freezing point and exhibits good anti-wear performance in diesel fuel. Ultimately, monoisoalcohol ester of succinic acid was screened out. Preferably, monoisononyl succinate, when added to ultra-low sulfur diesel at a dosage of 200 μg/g, can significantly enhance the lubricating performance of the diesel, reducing the WS1.4 value from 646μm to 281μm. This new lubricity additive has a freezing point as low as -50°C, showing potential for application in low-temperature environments.

Key words: lubricity additives, lubrication property, low freezing point, diacid monoester, diesel