MAS Epoxies Slow Hardener

MAS Epoxies Slow Hardener is a phenol-free resin hardener that provides high reactivity and extended gel time allowing for controlled and extended application periods.

Features:

• Optimized for composite wet lay-up, hardware and secondary bonding, moisture-exclusive coating and surface fairing
• Cures blush-free and eliminates the need for time-consuming wash downs during ongoing laminations and repetitive coat builds
• Good UV stability
• Excellent osmotic resistance
• Cures under high temperature and humidity conditions
• Ideal for fast wet-out of reinforcing fabrics
• MAS Fast Hardener may be added to MAS Slow Hardener to accelerate / adjust curing times

Handling characteristics:

• Mix ratio: (2) parts resin : (1) part hardener
• Gel Time at 77°F (25°C): 23 minutes (150 g mixture)
• Thin film set time at 77°F (25°C): 4 hours
• Cure time: 2-7 days