Polyoxymethilene, usually know with its acronym POM, is one of the most common and consumed plastic materials worldwide. Its application in the industrial world is largely known and is also usually called as Acetal Resin.
The first thing, which is important to know, is that we can actually find in the market POMC and POMH too. Both of them are obtained from the same polymeric family, but they have a different molecular structure and, consequently, a different mechanical behaviour.
Their differences are result of a different production method: to prevent unzipping of the polymer chains at high temperature 1) DuPont used an end cap mechanism and the obtained POMH; 2) Celanese opted for incorporation of a comonomer which also stopped the unzipping and the result was POMC.
Trying to avoid chemical circumstances, in this step it is enough knowing their main mechanical differences, which are:
POM is one of the most versatile plastic materials, it can be used in a huge variety of applications and industries. It assures a good range of properties, such as rigidity, hardness and a smooth surface, which allows POM to be considered a friction material, good for wear and sliding applications. One of the most important characteristics of POM is its dimensional stability, thank to the really low moisture absorption (up to 0,8%).
As usually happens also for other thermoplastic materials, POM can be improved adding additives and fillers during the extrusion process. Ones we can supply are:
UV rays damage the molecular structure of POM; a long-time exposure can in fact deteriorate the material and collapse its physical-mechanical properties.
On the other side, Polyoxymethylene resists to organic solvents, wax, fats and fuels. Only few substances at high temperature can damage the material.
POM is largely used in food processing industry, it can be certified EU 10/2011 and FDA. Acetal is usually available in White, Black and Blue RAL 5002.
Polyoxymethylene is usually available in sheets, rods and tubes and all our semi-finished materials shapes directly come from the main German and Austrian producers.
This material is known with a huge number of different trade names; most common and known are: