What are the main characteristics of the polyoxymethylene (POM) material used in C-type bottom chains?

The polyoxymethylene (POM) material used in C-type bottom chains has a series of significant main properties, which make POM the preferred material for manufacturing various connectors and mechanical parts.
Mechanical properties: POM has metal-like hardness, strength and rigidity, and is one of the materials with mechanical properties closest to metal among engineering plastics. It has high tensile strength, flexural strength and fatigue resistance, allowing it to maintain its mechanical properties under harsh service conditions. The heat distortion temperatures of homopolymerized POM and copolymerized POM are 136°C and 110°C respectively. POM can be used in high temperature environments for a long time with little change in mechanical properties.
Wear resistance: Because POM has high bond energy and high cohesive energy, its molecular structure is compact and stable, which makes POM have good wear resistance. In addition, the amorphous part of POM acts as a lubricant, which can reduce the friction coefficient and wear rate during friction, further extending the service life of POM parts. The wear resistance of POM makes it good in applications that need to withstand high friction and wear, such as sliding bearings, gears, cams, etc. In these applications, POM parts can operate stably for a long time, reducing the frequency of maintenance and replacement and reducing costs.
Corrosion Resistance: POM also excels in corrosion resistance. This makes POM widely used in chemical, petroleum, pharmaceutical and other industries to manufacture various corrosion-resistant parts and components. The corrosion resistance of POM is not only reflected in its resistance to organic solvents, but also in its stability to chemicals such as acids and alkalis. This allows POM to maintain its performance and stability in a variety of chemical environments, providing reliable solutions for a variety of complex applications.
Thermal Stability: POM (polyoxymethylene) material excels in thermal stability and is able to maintain its performance stably over a wide temperature range (-40°C to 100°C) for a long time. This good heat resistance allows POM materials to work reliably in various environments, whether it is the extremely cold north or the hot tropical areas. In addition, POM materials also have less water absorption and can maintain their mechanical properties and dimensional stability in humid environments, further enhancing their thermal stability.
Self-lubricating and fatigue resistance: The self-lubricating properties of POM materials make it particularly suitable for applications requiring long-term operation and frictional contact. Because the molecular structure of POM has special lubricating properties, it can reduce friction and wear without the need for additional lubrication, thereby extending service life. In addition, POM also exhibits good fatigue resistance, and its performance will not significantly decrease after experiencing prolonged or repeated stress. This makes POM materials ideal in applications requiring high reliability and long life.
Electrical properties: POM material also performs well in terms of electrical properties. It has good insulation and electrical properties. This makes POM materials widely used in the manufacturing of electronic and electrical components. Whether used as an insulating material or a conductive material, POM can provide stable electrical performance to ensure the normal operation of electronic and electrical equipment.
Processing performance: POM materials perform well in terms of processing performance. Whether they are homopolymers or copolymers, they have good processing properties. POM materials are easy to process and can be formed through various processing methods such as injection molding, extrusion, and cutting. This makes POM materials highly flexible and adaptable when manufacturing parts of various complex shapes and sizes. In addition, POM materials also have good recyclability and reusability, which is conducive to environmental protection and sustainable development.
Shrinkage: The high degree of crystallinity of POM materials results in high shrinkage, which is an important consideration in manufacturing processes with precise dimensional control. The shrinkage rate of POM can be as high as 2%~3.5%. The process parameters and mold design need to be precisely controlled during the design and manufacturing process to ensure the dimensional accuracy and performance stability of the final product. However, through reasonable process control and mold design, the shrinkage rate of POM materials can be effectively reduced and high-precision manufacturing can be achieved.
To sum up, the polyoxymethylene (POM) material used in the C-type bottom chain is known for its good mechanical properties, wear resistance, corrosion resistance, thermal stability, self-lubricating and fatigue resistance, electrical properties and processing performance, making it an ideal choice for manufacturing various connections and mechanical parts. These characteristics make POM materials widely used in high-end electronic appliances, auto parts, mechanical parts and other fields.