The invention relates to a complex
calcium sulphonate lubricating
grease compound and a preparation method thereof. The
raw material formula of the compound comprises the following raw materials in percentage by weight: 20 to 50 percent of high-base value
calcium sulphonate, 5 to 30 percent of
calcium carbonate whiskers, 1 to 5 percent of glacial
acetic acid, 0.05 to 0.3 percent of a
titanate coupling agent, 0.5 to 3 percent of long-chain
fatty acid, 2 to 5 percent of water and the balance of
base oil. The preparation method comprises the following steps: (1) mixing and reacting the
titanate coupling agent, part
base oil and the long-chain
fatty acid, adding the long-chain
fatty acid, and continuing reacting; (2) mixing and heating the
base oil with remaining formula amount and the high-base value calcium sulphonate, adding the water and the glacial
acetic acid in sequence, and stirring continuously; (3) mixing the materials in the step (1) and the step (2), and performing
dewatering reaction; (4) cooling, reducing temperature,
grinding, homogenizing and performing a degassing reaction. Compared with the prior art, the comprehensive performance of the lubricating
grease disclosed by the invention is remarkably improved; saponifying and high-temperature refining steps can be omitted when the complex calcium sulphonate lubricating
grease compound is prepared;
energy consumption and
raw material cost is low; industrial popularization is benefited.