改性菜籽油的制备及其摩擦学性能研究

Preparation and Tribological Performance of Modified Rapeseed Oil

绿色润滑基础油的研究工作在国内外得到了越来越多的重视。以菜籽油为原料,进行酰胺化改性,通过碱值和氮含量的比较,挑选出两种改性菜籽油作为润滑基础油,和纯菜籽油以及加氢油5Cst在四球摩擦磨损试验机上进行摩擦学性能比较,发现改性后的菜籽油相对有较好的极压、抗磨和减摩性能。EDS对磨损钢球表面分析得出醇胺改性后的菜籽油由于含有活性氮元素,其在摩擦表面形成有机氮和无机氮组成的复杂膜,可以明显提高基础油的摩擦学性能。

Nowadays, more and more attention has been paid to the research of green lubricating base oil at home and abroad. Using rapeseed oil as raw material, modifying them by amidation method, and comparing alkali value and nitrogen content of these modified rapeseed oil, this study selected two kinds of modified rapeseed oil as lubricating base oil to make a comparison with pure rapeseed oil and hydrogenated oil 5 Cst in terms of their tribological property through a four-ball tester. Based on the experiment, it finds that modified rapeseed oil has better property on pressure-resistance, wear-resistance and friction-reduction. Through EDS analysis of the worn surface of the steel ball, it concludes that rapeseed oil modified by alcohol amine, which contains reactive nitrogen element to form an organic nitrogen and inorganic nitrogen complex film, can significantly improve tribological property of base oil.