Two-component, room-temperature curing epoxy system with excellent adhesion to metals, composites, and thermoset plastics.
High shear and peel strength retention after thermal aging up to 150 °C.
Low volatile organic compound (VOC) content, supporting industrial sustainability and regulatory compliance.
Controlled pot life of approximately 60 minutes at 23 °C, enabling consistent manual or semi-automated dispensing.
Good resistance to humidity, salt spray, and aviation-grade hydraulic fluids (e.g., MIL-PRF-83282).
Aerospace structural bonding of honeycomb panels and secondary aircraft structures.
Automotive powertrain assembly, including sensor mounting and heat shield attachment.
Wind energy component bonding for blade root reinforcements and spar cap interfaces.
Industrial equipment repair and permanent bonding of metal-to-composite assemblies.
| Chemical Type | Bisphenol-A based epoxy resin system with amine hardener |
| Product Form | Two-component liquid (resin + hardener), supplied in separate cartridges or bulk containers |
| Appearance (Mixed) | Amber, homogeneous liquid |
| Primary Applications | Structural bonding, laminating, and potting in aerospace, transportation, and energy sectors |
| Key Features | Room-temperature cure, high toughness, low shrinkage, non-sag rheology |
| Benefits | Reduced energy consumption vs. heat-cured systems; improved process flexibility; enhanced durability in cyclic loading |
| Cure Schedule (Standard) | 24 hours at 23 °C; full properties achieved after 7 days |
| Storage Conditions | Resin: 5–30 °C; Hardener: 5–30 °C; Unopened, ≤12 months shelf life |
Q1: What substrates does Solvay BR 400 bond effectively to?
A: Solvay BR 400 exhibits strong adhesion to a broad range of engineering substrates, including metals (e.g., aluminum, stainless steel), thermoset composites (e.g., carbon fiber reinforced epoxy), and high-performance thermoplastics such as PEEK and polyimide. Surface preparation—typically solvent cleaning followed by light abrasion or plasma treatment—is recommended to maximize bond strength and durability.
Q2: Is Solvay BR 400 suitable for structural bonding in aerospace applications?
A: Yes—Solvay BR 400 is formulated for demanding structural bonding applications where high shear strength, thermal stability, and long-term environmental resistance are required. It is commonly evaluated and qualified in aerospace assembly processes, particularly for secondary bonding of composite and metal components, though final qualification depends on the specific part design, process parameters, and OEM approval protocols.
Q3: What is the typical cure profile for Solvay BR 400?
A: Solvay BR 400 is a two-component, heat-curable epoxy adhesive. A common processing window involves mixing at room temperature followed by an elevated-temperature cure—typically between 120 °C and 180 °C for 30 minutes to 2 hours, depending on part geometry, thermal mass, and performance requirements. Post-cure may be applied to further enhance glass transition temperature and chemical resistance.
Q4: How should Solvay BR 400 be stored to maintain shelf life?
A: Both components should be stored separately in tightly sealed containers at temperatures between 5 °C and 25 °C, protected from moisture and direct sunlight. Under these conditions, unopened components typically retain full reactivity for up to 12 months. Once opened, containers must be resealed immediately after use to prevent contamination or premature reaction.
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