How to solve the wear and tear of POM during high-speed extrusion?

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Polyformaldehyde (simply as POM), also known as polyoxymethylene, is a thermoplastic crystalline polymer, known as “super steel”, or “race steel”. From the name can be seen POM has a similar metal hardness, strength, and steel, in a wide range of temperatures and humidity has good self-lubrication, good fatigue resistance, and is rich in elasticity, in addition, it has good chemical resistance, is one of the five major engineering plastics.  It is increasingly displacing traditional metal materials like zinc, brass, aluminum, and steel in the manufacturing of numerous components

Key Characteristics of Polyoxymethylene (POM):

Excellent Mechanical Properties: Polyoxymethylene (POM) has high hardness, high rigidity, and good wear resistance, so it is often used in the manufacture of mechanical parts, bearings, and gears.

Wear resistance and self-lubrication: Polyoxymethylene (POM) has excellent wear resistance and self-lubrication.

Chemical resistance: Polyoxymethylene (POM) has strong chemical resistance and good stability to a variety of chemicals, so it is suitable for a variety of industrial fields.

Excellent processing performance: Polyoxymethylene (POM) is easy to process and mold, and can be processed into a variety of complex shapes of products through injection molding, extrusion, and other ways.

Polyoxymethylene (POM) is one of the engineering plastics whose mechanical properties are closest to those of metal, and it can be used to manufacture a variety of engineering plastics products, including but not limited to electronic and electrical appliances, automotive parts, medical equipment, mechanical equipment, toys, and other fields.

Although polyoxymethylene (POM) itself already has relatively good performance, such as wear resistance and self-lubricating properties, etc., polyoxymethylene (POM) in high-speed rotation or extrusion may still appear to wear phenomenon. The processing difficulties of polyoxymethylene (POM) products mainly include the following aspects:

  • POM is a difficult polymer material to process, its melt viscosity is high and needs high temperature and high-pressure processing.
  • POM’s thermal stability is poor, easy to thermal decomposition, processing temperature is too high will lead to material performance degradation.
  • POM has a high shrinkage rate and is prone to shrinkage and deformation during extrusion molding, requiring precise size control.

Enhancing POM Processing: Overcoming Wear Challenges with SILIKE Silicone Masterbatch.

SILIKE Silicone Masterbatch ( Siloxane Masterbatch ) LYSI-311 is a pelletized formulation with 50% ultra-high molecular weight siloxane polymer dispersed in Polyformaldehyde ( POM ). It is widely used as an efficient processing additive in POM-compatible resin systems to improve the processing properties and modify surface quality. 

Compared to conventional lower molecular weight Silicone / Siloxane additives, like Silicone oil, silicone fluids, or other type processing aids, SILIKE Silicone Masterbatch LYSI series is expected to give improved benefits.

Maximizing POM Potential: Unveiling the Advantages of SILIKE Silicone Masterbatch LYSI-311

SILIKE Silicone masterbatch LYSI-311 significantly improves the wear resistance of POM without affecting other basic properties.SILIKE Silicone masterbatch LYSI-311 improves processability, such as better flow ability, easy molding filling & release, internal and external lubrication performance, and reduced energy consumption.SILIKE Silicone masterbatch LYSI-311 improves the appearance of products, gives products a smooth surface, reduces the coefficient of friction on the surface of products, and improves the surface gloss.SILIKE Silicone masterbatch LYSI-311 is suitable for POM compounds and other POM-compatible plastics. Tailored solutions are available to address specific processing challenges, ensuring optimal performance. Contact SILIKE for personalized assistance in overcoming POM processing difficulties and achieving superior results in your applications.

article source: https://www.siliketech.com/news/how-to-solve-the-wear-and-tear-of-pom-during-high-speed-extrusion/

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