Grease is mainly composed of thickener, base oil, additives composed of three parts. Usually grease thickener content of about 10% -20%, the base oil content of about 75% -90%, the content of additives and fillers is less than 5%.

l. Base Oil

Grease base oil is the dispersion in the dispersion medium, its properties have a greater impact grease. Grease typically use more medium-viscosity and high-viscosity petroleum oil as the base oil, there are also some lubrication and sealing machine to adapt to the needs of the work under harsh conditions, the use of synthetic oil as a base oil stream, such as ester oil, silicone oil poly weep - olefin oil.

2. thickener

Thickener is an important component of the grease, the thickening agent is dispersed in the base oil and grease skeleton structure is formed, so that the base oil is adsorbed and fixed to the structural framework. Grease water resistance and heat resistance is mainly determined by the thickener. Grease thickener used in the preparation of two categories. Soap thickener (ie, fatty acid metal salt) and non-soap thickener (hydrocarbons, inorganic and organic).

Soap thickener into a single soap (such as calcium-based resin), mixing soap (such as calcium, sodium based grease), complex soap (such as calcium complex grease) three. 90% of the grease with soap thickener made.

3. additives and fillers

A class of additives are the grease to be there, called gum solvent, it makes the oil more stable binding ? soap such as glycerin and water. Calcium-based grease lose water, its structure is completely destroyed, can not be a fat, such as glycerol sodium grease in grease consistency may be adjusted. Another class of additives and lubricants like, such as antioxidant, anti-wear and anti-rust agent, but the amount is more general than the lubricant. Sometimes, in order to improve the resistance to flow off the grease lubrication and empowerment, often adding some graphite disulfide and carbon black as filler key.