Abstract:

With 150BS base oil as matrix, 10 different types of organic bentonite species from China or the United States were used as additives for preparation of bentonite-blending greases to investigate their thickening and grease forming performance. It is found that the organic bentonite B from US Southern Clay Company and the organic bentonite F produced in Lin’an in China are both the best additives to thicken 150BS base oil and the prepared greases possess good high temperature and water resistant performance. These two bentonites have the same structure type and composition, and belong to the fatty acid amide cover type organic bentonite. The performance of the greases produced with B and F is similar to that of the same kind foreign products, and the extreme pressure and anti-wear properties are even better.

Key words: bentonite, grease, preparation, base oil