解説
流動点降下剤とその性能評価
2019 年 64 巻 3 号 p. 165-170
詳細
2019 年 64 巻 3 号 p. 165-170
Because of wax species which essentially exist in mineral oil, which is often used as base oil, lubricating oils can lose its fluidity at low temperatures. In order to mitigate this issue, pour point depressant is widely used in various formulations. In this article, the working mechanism of pour point depressant and how to evaluate its performance as well as the reason why the fluidity of mineral oil based lubricants can be worse at low temperatures are explained. Some studies on pour point depressant selection for engine oil are also illustrated, focusing on low viscosity fluid such as SAE 0W-16 grade, which is going to expand as a new generation grade.
