An oil thickener is a substance added to oil to increase its viscosity, essentially turning it into a grease or a semi-fluid mass. This transformation makes it easier to apply the lubricant in situations where oil alone would be impractical.
The Role of Thickeners in Grease
Thickeners play a critical role in the formation of grease. Here's a breakdown:
- Conversion: Thickeners transform liquid oil into a semi-solid or solid form.
- Application: Grease is easier to apply and remains in place on equipment better than oil in many applications.
- Composition: A thickener, combined with a base oil, creates the final grease product.
Types of Thickeners
While the reference doesn't specify types, thickeners can be generally classified. Common types of grease thickeners include:
- Metallic Soaps: Examples include lithium, calcium, aluminum, and sodium soaps. Lithium soaps are widely used.
- Complex Soaps: These offer improved high-temperature performance compared to simple soaps.
- Non-Soap Thickeners: Examples include clay, silica gel, polyurea, and PTFE (Teflon). These thickeners are often used in specialized applications where resistance to high temperatures or specific chemicals is required.
Why Use a Thickener?
- Improved Lubrication: Grease can provide a more consistent and reliable lubricating film in certain applications.
- Reduced Leakage: Grease tends to stay in place better than oil, minimizing leakage and waste.
- Sealing: Grease can help to seal out contaminants, protecting lubricated parts from dirt and moisture.
In summary, an oil thickener is a crucial component in grease formulation, enabling effective lubrication in diverse industrial and mechanical applications.
