Meisterprüfung Kunststoffverarbeitung Practice Questions - Österreichische Meisterprüfung Für Das Handwerk Der Kunststoffverarbeiter Exam

POM-H exhibits higher crystallinity, higher tensile strength, and higher stiffness, but POM-C provides superior thermal stability, higher resistance to alkali hydrolysis, and reduced risk of formaldehyde outgassing during processing POM-C has higher stiffness and melting point than POM-H, but is susceptible to severe stress cracking in hot water and strong bases POM-H contains oxyethylene comonomer units that inhibit chain unzipping, making it far more thermally stable during prolonged barrel residence times than POM-C POM-H is an amorphous engineering plastic used for optical lenses, whereas POM-C is a semi-crystalline elastomer used for dynamic gaskets