Product Introduction
3M™ Scotch-Weld™ Core Reinforcement Adhesive EC-3903 is a green, organic liquid adhesive specifically designed for bonding and reinforcing crushed honeycomb core structures. It is applied via spray, a method that allows it to easily penetrate and coat difficult-to-access areas within the honeycomb core. Upon curing, it forms a solid coating that effectively reinforces the structure. For enhanced performance, it is best used alongside 3M™ Scotch-Weld™ Structural Adhesive Films AF 126 or AF 126-2. Its viscosity of 100-300 cps can also be reduced by combining it with 3M™ Scotch-Weld™ EC-3703 to meet specific application needs.
3M™ EC-3903 Features
- Epoxy adhesive designed to bond and reinforce crushed honeycomb core
- Liquid spray application forms a solid coating upon curing
- Reaches difficult-to-access areas for comprehensive reinforcement
- Recommended for use with 3M™ Scotch-Weld™ Structural Adhesive Films AF 126 or AF 126-2
- Compatible with 3M™ Scotch-Weld™ EC-3703 to adjust viscosity and solids
- Viscosity range of 100-300 cps for optimal flow and penetration
- Flash point of 45°F (7°C)
3M™ EC-3903 Applications
- Bonding and reinforcing crushed honeycomb core structures
- Applications requiring spray adhesives for inaccessible core areas
- Used in conjunction with structural adhesive films for enhanced structural integrity
- Ideal for aerospace components requiring core reinforcement
- Situations where viscosity adjustment is needed using 3M™ Scotch-Weld™ EC-3703
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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Typical Properties
| Property | Value |
|---|---|
| Adhesive Type | Epoxy |
| Application | Honeycomb Reinforcement |
| Brands | Scotch-Weld™ |
| Container Size (Imperial) | 5 Gallon |
| Container Size (Metric) | 18.93 Liter |
| Cure Temperature (Celsius) | 121 °C |
| Cure Temperature (Fahrenheit) | 250 °F |
| Product Color | Green |
