Acetal homopolymer and copolymer

Monday, June 13, 2011
Acetals or polyacetals are among the strongest and stiffest of the thermoplastics. They are often considered as an alternative for metal parts. There are two basic types of acetals in worldwide use today: an acetal homopolymer that was first introduced by Du Pont with trade number Delrin and an acetal copolymer that was from Celanese with name Celcon.

The homopolymer is produced from polyformaldehyde and the copolymer from trioxane. Homopolymers have better tensile strength, fatigue resistance, and hardness but are difficult to process. Copolymers have better thermal stability, chemical resistance, and processability. Acetal copolymers have a melting point of 163°C whereas acetal homopolymers melt at 175°, the homopolymer is around 10% to 15% stronger and more rigid than the copolymer whilst having similar impact properties. Parts made of acetal homopolymer and copolymer are generally strong and tough.

There are various places to get acetal homopolymer and acetal copolymer. Online on the internet can be the easiest way to find suppliers of homopolymer and copolymer.

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