Momentive SILQUEST A-1106 Aminosilane Coupling Agent

Features Of Momentive SILQUEST A-1106 Aminosilane Coupling Agent

1. Dual Reactivity - Amino groups bond with resins; methoxy links to fillers/metals

2. Wet Adhesion - Maintains >90% bond strength after humidity exposure

3. Process Efficiency - Alcohol-free aqueous solution for safer handling

4. Multi-Matrix Compatibility - Works with epoxy, PU, and phenolic resins

5. Sustainability - Halogen-free, low VOC (<50 g/L)

Typical Applications Of Momentive SILQUEST A-1106 Aminosilane Coupling Agent

1. Waterborne Coatings - Enhanced metal/glass adhesion for anti-corrosion coatings

2. Structural Adhesives - Improved bonding in PU/epoxy systems

3. FRP Reinforcement - Glass fiber sizing for high-strength composites

4. Rubber Compounding - Silica-filled EPDM for cables and seals

Specifications Of Momentive SILQUEST A-1106 Aminosilane Coupling Agent

Momentive SILQUEST A-1106 Aminosilane Coupling Agent – Frequently Asked Questions (FAQ)

Q1: What is the primary functional role of SILQUEST A-1106 in composite formulations?

A: SILQUEST A-1106 acts as a bifunctional coupling agent that enhances interfacial adhesion between inorganic fillers (e.g., silica, glass, minerals) and organic polymer matrices (e.g., epoxies, polyurethanes, acrylics), improving mechanical properties, moisture resistance, and long-term durability of the final composite.

Q2: How should SILQUEST A-1106 be handled and stored to maintain stability?

A: Store in tightly sealed containers under dry, cool conditions (typically below 30°C) and protect from moisture, heat, and direct sunlight. Due to its reactive amino and alkoxy groups, exposure to ambient humidity may lead to premature hydrolysis or gelation; therefore, it is recommended to use within six months of opening and to avoid repeated container openings in high-humidity environments.

Q3: Can SILQUEST A-1106 be used directly in aqueous systems?

A: SILQUEST A-1106 is not inherently water-stable and requires careful pre-hydrolysis—typically with a small amount of water and a mild acid catalyst (e.g., acetic acid)—to generate reactive silanol species before incorporation into aqueous dispersions or emulsions. Direct addition to water without stabilization may result in rapid condensation and phase separation.

Q4: What types of resins or polymers are most commonly modified using SILQUEST A-1106?

A: It is widely applied in epoxy, phenolic, polyurethane, and silicone-based systems—particularly where improved filler dispersion, reduced viscosity, enhanced wetting of reinforcing fibers (e.g., glass, carbon), or superior electrical insulation performance is required.

Q5: How does SILQUEST A-1106 compare to other aminosilanes in terms of reactivity and compatibility?

A: SILQUEST A-1106 features a secondary amine group and ethoxy functionality, offering balanced reactivity—lower volatility and slower hydrolysis kinetics than triethoxysilanes with primary amines, while providing good compatibility with both polar and moderately non-polar resin systems. This makes it especially suitable for applications requiring extended processing windows and reduced odor or volatility concerns.