Bectron® PK 5542

Bectron® PK 5542 is a one component resin system which cures to form a soft polyurethane duroplastic with high thermal resistance. It comprises a liquid polyol system with a dispersed solid encapsulated polyisocyanate and a pigment combination selected to provide controlled rheology including some thixotropic character while maintaining superior tem- perature resistance & stability.

Heating the resin releases the encapsulated polyiso- cyanate resulting in a polyaddition reaction to give a soft duroplastic cured material.

APPLICATIONS 

• The cured Bectron^® PK 5542 is a soft duroplastic suitable for chemical, shock and vibration protection of delicate components exposed to high temperature conditions.
• Bectron^® PK 5542 is used for the partial or selective coating of SMDs and other components groups on printed circuit boards and ceramic substrates. It can also be applied as a casting/potting resin for elec- tronic components and sensors, automotive electron- ics, plugs etc, up to temperature of 150°C
• The viscosity is moderate with slight thixotropic prop- erties for selective thick coating of components or potting of PCB’s or hybrids in housings.