What are the three cross-linking mechanisms used in the curing process of FKMs?
The three cross-linking mechanisms used in the curing process of FKMs are diamine cross-linking, ionic cross-linking, and peroxide cross-linking.
What is the advantage of diamine curing in terms of rubber-to-metal bonding properties?
Diamine curing provides superior rubber-to-metal bonding properties compared to other cross-linking mechanisms.
What is the most common cross-linking chemistry used for FKMs?
The most common cross-linking chemistry used for FKMs is ionic cross-linking.
What are the benefits of ionic cross-linking over diamine curing?
Ionic cross-linking provides superior heat resistance, improved hydrolytic stability, and better compression set compared to diamine curing.
What is the cross-linking agent used in ionic cross-linking?
Dihydroxy aromatic compounds are used as the cross-linking agent in ionic cross-linking.
What type of reactions are diamine and bisphenolic cross-linking?
Diamine and bisphenolic cross-linking are ionic reactions.
What type of mechanism is peroxide cross-linking?
Peroxide cross-linking is a free-radical mechanism.
When are peroxide cross-links the system of choice?
Peroxide cross-links are the system of choice in aqueous media and nonaqueous electrolyte media.
What properties make fluoroelastomers suitable for use in aggressive fluids?
Fluoroelastomers provide excellent high temperature and aggressive fluids resistance compared to other elastomers.
What sector of the automotive industry commonly uses FKM materials?
The automotive industry commonly uses FKM materials, particularly in applications such as seals, pumps, gaskets, and tubing.
