硼氮化菜籽油润滑添加剂的合成及摩擦学性能研究

摘要: 当油菜籽改性的硼和氮用作添加剂并且油菜籽油用作基础油时，长链菜籽油分子发生载体作用，高氮反应性和缺硼电子会在金属摩擦面形成高强度吸附膜。并且，形成的反应膜具有良好的提高润滑油的承载能力，以及减小摩擦的性能。为此，本课题以精制菜籽油为原料, 改变了菜籽油的化学性质,从而制备硼氮改性菜籽油添加剂（BNR）。实验的最终结论为：反应原料溶液的摩尔质量比为1:1，在140°C条件下充分反应3h。随后在第二步，加入硼酸再持续地反应1小时。反应温度控制在120℃下进行反应，得出产物硼氮改性菜籽油添加剂（BNR）的最高产率，为76.8%。并用红外光谱鉴定其主要功能基团。B-O键的吸收峰出现在（1430~1355）cm-1处，表明该化合物为硼酸酯化合物。在1264.3cm-1处的较强吸收峰表明化合物中有N元素存在，并且为O-C-N的吸收峰。此外图中的（1695~1540）cm-1出现了-C=C-的中等强度吸收峰，表明产物为不饱和。使用四球机进行磨损试验，来研究菜籽油作为基础油和BNR作为添加剂时的抗磨损和抗摩擦的性能。结果表示出：基础油中添加剂最适宜的含量为1.5%(wt%)，硼氮化菜籽油添加剂的抵抗摩擦性以及减摩性能十分良好，是十分出色的绿色环保型润滑添加剂。

关键词：环境友好型；菜籽油；硼氮化菜籽油改性；摩擦润滑性能

Study on the Tribological Properties of Boron-nitrogen Rapeseed Oil based Lubricity Additives

Abstract: When rapeseed-modified boron and nitrogen are used as additives and rapeseed oil is used as a base oil, long-chain rapeseed oil molecules undergo carrier action, and high-nitrogen reactivity and boron-deficient electrons form a high-strength adsorption film on the metal friction surface. Moreover, the formed reaction film has good anti-friction and anti-friction effects on the steel and aluminum steel friction pair steel friction pair. Therefore, this project uses modified rapeseed oil as a raw material to change the chemical properties of rapeseed oil to prepare a boron-nitrogen-modified rapeseed oil additive (BNR). The final conclusion of the experiment was that the molar mass ratio of the reaction raw material solution was 1:1, and the reaction was fully performed at 140° C. for 3 h. Then in the second step, 12 g of solid boric acid was added and the reaction continued for one hour. The reaction temperature was controlled at 120°C to obtain the highest yield of product boron nitrogen modified rapeseed oil additive (BNR), which was 76.8%. The main functional groups were identified by infrared spectroscopy. The absorption peak of the B-O bond appeared at (1430 to 1355) cm-1, indicating that the compound was a borate ester compound. The stronger absorption peak at 1264.3 cm-1 indicates that N is present in the compound and is an O-C-N absorption peak. In addition, a moderate intensity absorption peak of -C=C- appears in (1695-1540) cm-1 of the graph, indicating that the product is unsaturated. A four-ball machine was used for the abrasion test to investigate the anti-wear and anti-friction properties of rapeseed oil as a base oil and BNR as an additive. The results showed that the optimum content of the additive in the base oil was 1.5% (wt%). The boron nitride nitride rapeseed oil additive has very good friction resistance and friction reduction performance and is an excellent green environment-friendly lubricant additive.

Key words: Environmentally friendly; Rapeseed Oil; Boron Nitride Seed Oil Modified；Friction lubrication properties

1 文献综述 1

1.1绿色环保润滑剂 1

1.1.1绿色环保型润滑剂概念 2

1.1.2绿色环保型润滑剂的生物降解性硼氮化菜籽油润滑添加剂的合成及摩擦学性能研究:http://www.chuibin.com/huaxue/lunwen_205808.html