Polyurea grease is a high-performance synthetic grease product with important application value in industrial production. This article will elaborate in detail on the preparation, composition, performance, and application of polyurea lubricating grease.

1、 Preparation of polyurea lubricating grease

The preparation methods of polyurea lubricating grease include traditional heating mixing method and high-energy ultrasonic method. In the traditional heating mixing method, the urea compound and epoxide are mixed first, and then refluxed at high temperature to obtain polyurea grease. The principle of high-energy ultrasound is to place the materials in the reaction system in an ultrasonic field, and accelerate the reaction rate through the physical force of ultrasound, thereby achieving the preparation of polyurea lubricating grease.

2、 Components of polyurea lubricating grease

The typical components of polyurea grease are urea compound, epoxide and lubricating oil. Among them, urea compounds refer to urea forming compounds formed by the condensation reaction of polyols or polyacids with isocyanates; Epoxide refers to the conversion of epoxy resin into epoxy based system compound through epoxidation reaction. Lubricating oil is made from a specific formula of liquid base oil and additives.

3、 Performance of polyurea lubricating grease

1. Stable high-temperature performance: In addition to good high-temperature resistance, polyurea grease still has good stability in high-temperature environments and can maintain lubrication effect at high temperatures.

2. Good water resistance: Polyurea grease has excellent water resistance and can maintain good lubrication even in humid or water immersed environments.

3. Strong load bearing capacity: Polyurea grease has strong load bearing capacity and can maintain good lubrication performance in high temperature and high load environments.

4. Strong wear resistance: Polyurea grease has a good protective effect on the wear of metal parts and can effectively extend the service life of machines and equipment.

4、 Application of polyurea lubricating grease

Polyurea lubricating grease is widely used in fields such as mechanical manufacturing, engineering machinery, automobiles, rail transit, mining and metallurgy. The specific application scope includes but is not limited to:

1. Mechanical manufacturing field: used for various transmission equipment, heavy-duty equipment, metallurgical machinery, etc.

2. Engineering machinery field: used for equipment such as excavators, loaders, rollers, scrapers, etc.

3. Automotive field: Used for various mechanical components such as engines, steering gears, and gearshifts in automobiles.

4. Rail transit field: Used for lubricating parts of high-speed rail, urban rail transit, subway and other transportation vehicles.

5. Mining and Metallurgy: Equipment used in industries such as mining, steel, and metallurgy.

Summary:

Polyurea grease, as a high-performance grease product, has characteristics such as stable high-temperature performance, excellent water resistance, strong load carrying capacity, and wear resistance. It is widely used in fields such as mechanical manufacturing, engineering machinery, automobiles, rail transit, mining and metallurgy. In the future, polyurea lubricating grease will gradually become the mainstream product in the field of lubricating grease, bringing more efficient and environmentally friendly solutions to industrial production.