3-Isocyanatopropyltriethoxysilane (CAS 24801-88-5) User Guide
Table of Contents
Introduction
3-Isocyanatopropyltriethoxysilane (CAS 24801-88-5) is a silane coupling agent with dual functional groups, combining isocyanate and triethoxysilane. It is widely used to enhance adhesion between organic polymers and inorganic substrates.
Key Specifications
- Chemical Name: 3-Isocyanatopropyltriethoxysilane
- CAS Number: 24801-88-5
- Molecular Formula: C10H21NO4Si
- Molecular Weight: 247.36 g/mol
- Appearance: Clear colorless to pale yellow liquid
- Purity: ≥97%
- Packaging: 1kg, 5kg, 25kg drums
Applications
This silane is used in:
- Adhesives & Sealants: Improves bonding strength in epoxy, polyurethane, and acrylic systems.
- Coatings: Enhances corrosion resistance and substrate adhesion.
- Composite Materials: Couples glass fibers and fillers with polymer matrices.
- Rubber & Plastics: Modifies surface properties for better compatibility.
Usage Instructions
- Safety: Wear PPE (gloves, goggles) and work in a ventilated area.
- Dilution: Mix with ethanol or acetone (1-5% concentration recommended).
- Application: Apply to substrate via spraying, dipping, or brushing.
- Curing: Allow 10-30 minutes at room temperature for solvent evaporation, then cure at 80-120°C for 1-2 hours.
Case Studies
Case 1: Automotive Composite Manufacturing
A manufacturer used 3-Isocyanatopropyltriethoxysilane (1.5% in ethanol) to pre-treat carbon fibers in epoxy composites. Resulted in a 35% increase in interlaminar shear strength and improved heat resistance.
Case 2: Electronic Encapsulation Adhesives
Incorporating 2% of this silane into silicone adhesives enhanced bonding to aluminum heat sinks in LED modules, reducing failure rates by 22% under thermal cycling tests.
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