ARADUR® 125 BDB

• Excellent mechanical properties
• Excellent corrosion resistance
• Excellent adhesion
• Non-critical mixing ratio
• Long working time

• Solvent-borne coatings for industrial maintenance
• Adhesives
• Castings
• Caulking
• Potting compounds

Processing

• ARADUR® 125 BDB hardener may be used to cure both ARALDITE® liquid epoxy resins and low molecular weight solid epoxy resin solutions either at room or elevated temperatures.
• The ratio of epoxy resin to polyamide resin will determine the ultimate coating properties.
• The normal range of polyamide to epoxy resin is 33 - 100 phr (parts per hundred parts of resin), with 50 - 70 phr being typical for most general purpose applications.
• While higher mix ratios than 70 phr are sometimes used for increased flexibility and therefore increased bond strength in some adhesive formulations, mix ratios greater than 70 phr typically result in decreased thermal stability.
• The cure schedule depends upon the total formulation used (i.e., resin, fillers, solvents, etc.) and the conditions of application (i.e., temperature, humidity, thickness, etc.).
• The time varies inversely with temperature Reactivity increases throughout the polyamide series of ARADUR® 115, ARADUR® 125-2, and ARADUR® 140- 2 hardeners. The degree of sensitivity to high atmospheric humidity tends to increase with higher amine content.

¹ Softening point specification
² Likely a filler or extender
³ Rheology modifier for viscosity control

• ARADUR® 125 BDB Hardener should be stored in a dry place, in the sealed original container, at temperatures between 2°C and 40°C (36°F and 104°F).
• Under these storage conditions, the product has a shelf life of 3 years (from date of manufacture).
• The product should not be exposed to direct sunlight.