Polyamide Hardener (Amine Value 140)

Polyamide Hardener with Amine Value 140 mg KOH/g is a higher-reactivity dimer-acid polyamide epoxy curing agent, offering faster cure, shorter pot life, and slightly higher hardness compared to lower amine value grades (e.g., AV 115). The increased amine value results from a higher content of reactive amine groups in the polyamide backbone, producing a denser crosslink network with improved mechanical performance while retaining the characteristic toughness and adhesion properties of polyamide curatives. This grade is well suited for epoxy coating applications that require faster through-dry times in production environments, fast-set marine adhesives, and composite sandwich bonding with rapid demold requirements. The mix ratio with standard BPA epoxy (EEW 190) is approximately 100:55–65 w/w. At room temperature (25°C), the pot life for a 100g batch is approximately 30–50 minutes, providing a practical working time for brush, roller, or spray application. The cured film exhibits good elongation, impact resistance, and adhesion across substrates including steel, aluminum, GRP, and concrete — characteristics that make it a versatile workhorse in industrial maintenance and composite construction.