JEFFAMINE® RFD-270 amine, having an average formula weight of about 270, is a novel aliphatic amine containing both rigid (cycloaliphatic) and flexible (polyetheramine) segments in the same molecule. “RFD” stands for “Rigiflex diamine” offering a unique formulating option for composites, coatings, and adhesives. When used for epoxy resin curing, this product can provide synergistic processing and cured resin performance advantages relative to simple mixtures of polyetheramines (PEAs) and cycloaliphatic amines.

Typical applications:

• Epoxy Curing Agents – used in composite applications such as wind turbine rotor blades, coatings, and other applications
• Polyamides – used in adhesives and sealants
• Polyureas – used in molded plastics and elastomeric coatings

Features & Benefits

• Higher glass transition temperature (Tg) capability, up to 20°C, than the highest performing PEA curatives. The Tg appears relatively insensitive to mix ratio.
• Faster curing and property development, allowing reduction of accelerator usage
• Low viscosity, color and vapor pressure
• Lower blushing or carbamation (reaction with atmospheric carbon dioxide) compared to cycloaliphatic amines
• Faster strength development than PEA curatives and excellent mechanical properties
• Potential cost savings when formulated with JEFFSOL® PC carbonate-diluted resin vs. aliphatic epoxy-diluted resin
• Improved chemical resistance to typical acids and bases in coating applications

Properties

AHEW (Amine hydrogen equivalent wt.), g/eq…………67
Density, g/ml (lb/gal), 25°C (77°F) …………………………0.96
Viscosity, cSt, 25°C (77°F) ……………………………………..67.6
Flash point, PMCC, °C (°F) >149…………………………….(>300)
pH, 5% aqueous solution ……………………………………….10.5
Vapor pressure, mm Hg, 100°C ………………………………1.4 x 10-3