 |
 |
 |
 |
 |
 |
 |
|
The main raw materials are formaldehyde (formaline) and its trimer trioxane, and the polymers are categorized as either homopolymer or copolymer depending on the production process.
Generally speaking, as the copolymer possesses carbon-carbon bonds, it has superior thermal stability compared with the homopolymer, while chemical resistance, oil resistance, and hot water resistance are considered good. In addition, the copolymer is more stable when molding, and as the molding temperature window is wide, it is said to be easier to handle.
|
 |
|
|
|
|
|
POM Production Process Diagram |
|
|
|
 |
|
1) |
The short-term mechanical strength of the homopolymer is somewhat higher than that of the copolymer. |
|
|
2) |
While the strength and stiffness of the copolymer are slightly lower than that of the homopolymer, flexibility on the other hand is superior. |
|
|
3) |
The melting point of the homopolymer is about 10°C higher than the copolymer, and the DTUL is high. |
|
|
4) |
The copolymer has superior hot water resistance, alkali resistance, and oil resistance at elevated temperatures. |
|
|
5) |
The thermal stability of the copolymer as a polymer melt during molding is superior, and the processing temperature window is wide.
|
|
|
|
|
|
|
|
|
|
Structural Formula |
|
|
|
|
|
|
|
|
Raw material and Polimerization
