POM, or polyoxymethylene, as a thermoplastic polymer, has shown excellent performance in many fields. It not only has excellent mechanical properties, but also has good wear resistance and chemical resistance, among which the self-lubricating principle is its uniqueness.
The self-lubricating properties of POM are closely related to its molecular structure and tribological properties. At the molecular structure level, POM contains a large number of carboxyl and hydroxyl functional groups, which can form hydrogen bonds, giving POM good hydrophilicity. During the friction process, POM can absorb moisture and form a layer of water film, which effectively reduces friction.
In addition, the POM molecular chain can be oriented during friction to form an ordered structure, further reducing the friction coefficient. This property enables POM to maintain stable friction performance under high and low speed conditions.
In addition to self-lubricating properties, POM also has excellent wear resistance. This is due to its high hardness and good elastic recovery ability, which enables it to resist wear and maintain surface integrity during friction. At the same time, POM's chemical resistance also provides a guarantee for its application in complex environments.
The self-healing ability of POM is also worth mentioning. At the microscopic level, it can repair damaged parts and extend the service life.
Because of this, POM is widely used in many fields such as automobiles, textile accessories, and electronic appliances. Its excellent mechanical properties and self-lubricating properties make it an ideal material for manufacturing precision parts such as gears. At the same time, POM's modified products continue to meet the needs of different industries and show broad application prospects.