苯并三氮唑基）丙基（二正丁基氨基）二硫代乙酸酯的合成、表征及性能研究 应用化学专业

I3-（苯并三氮唑基）丙基（二正丁基氨基）二硫代乙酸酯的合成、表征及性能研究摘 要含氮杂环化合物及其衍生物的润滑油添加剂具有无毒或低毒，优异的极压抗磨性能可满足机械设备和环境的特殊要求，具有广阔的发展前景。本文设计合成了一种环友好的含氮杂环酰胺类润滑油添加剂——3-（苯并三氮唑基）丙基（二正丁基氨基）二硫代乙酸酯（记为添加剂 A），通过核磁共振氢谱（1H NMR）和飞行时间质谱（MALDI-TOF-MS）表征了分子结构；通过定性分析，研究了添加剂 A 在植物油（VO）中的油溶性、抗腐蚀性；通过热重分析仪，研究了分子的热稳定性；通过测定其最大无卡咬负荷、烧结负荷磨斑直径和摩擦系数等数据，分析并讨论了摩擦学性能。实验结果表明：该添加剂具有良好的油溶性、热稳定性和抗腐蚀性，含 1.0%（质量分数）添加剂 A 的油样的最大无卡咬负荷（PB）值和烧结负荷（PD）值分别比 LP 提高了 106%和 59%，其油样的钢球磨斑直径（WSD）比 LP 降低了 38%，有效提高了基础油的极压、抗磨和减摩性能。关键词：润滑油添加剂；摩擦学性能；合成；表征IIAbstractThe lubricating oil additive containing nitrogen heterocyclic compound and its derivative has non-toxic or low toxicity, excellent extreme pressure anti-wear performance, can meet the special requirements of mechanical equipment and environment, and has broad development prospects. In this paper, an environmentally friendly Nitrogen-containing heterocyclic lubricating oil additive, 3 - (benzotriazolyl) propyl (di-n-butylamino) dithioacetate (denoted as additive A), was designed and synthesized. Their molecular structures were characterized by 1H NMR and MALDI-TOF-MS. The oil solubility and corrosion resistance of additives in vegetable oil (VO) were studied by qualitative analysis. The thermal stability of the molecule was studied by thermogravimetric analyzer. The tribological properties were analyzed and discussed by measuring the maximum non-sticking bite load, sintering load, wear spot diameter and friction coefficient. The experimental results showed...