Key Features & Benefits
- High-strength structural epoxy adhesive
- Ultra-clear bond line (ideal for optical applications)
- 2 part epoxy adhesive (2:1 mix) for controlled curing
- Room temperature curing system
- Excellent chemical and solvent resistance
- Strong adhesion to metals, glass, plastics & ceramics
- Low shrinkage for precision bonding
- High electrical insulation strength (~20 kV/mm)
Applications of Supex Structural Epoxy
- Panel bonding and composite assembly
- Electronics potting and encapsulation
- Optical bonding (glass & fiber optics)
- Metal-to-metal structural bonding
- Laminating applications
- Precision component assembly
Substrates Bonded
Supex E 30CL is a versatile epoxy adhesive for multiple materials:
- Metals (steel, aluminum, stainless steel)
- Glass and optical fibers
- Ceramics
- Engineering plastics (ABS, PVC, polycarbonate, nylon)
- Wood and composite materials
Technical Specifications
Type: 2 component structural epoxy adhesive
- Mix Ratio (Volume): 2:1
- Working Time: ~30 minutes
- Tack-Free Time: ~160 minutes
- Cure: Room temperature (faster with heat)
Mechanical Properties
- Tensile Strength: ~55 N/mm²
- Shore Hardness: 80–90 D
- Elongation: 8%
- Glass Transition Temperature (Tg): ~60°C
Adhesion Strength (Lap Shear)
- Steel: up to 21 N/mm²
- Aluminum: ≥6.9 N/mm²
- Stainless Steel: 14 N/mm²
- Polycarbonate: 13 N/mm²
- Glass: up to 24 N/mm²
Performance & Resistance
- Resistant to chemicals, fuels, and solvents
- Withstands exposure to:
- Motor oil
- Water/glycol mixtures
- Acetone & isopropanol
- Excellent dimensional stability across temperature ranges
- Durable under humidity and environmental stress
Why Choose Supex E 30 CL Structural Epoxy?
Compared to standard adhesives, this structural epoxy adhesive offers:
- Superior bonding strength for structural applications
- Optical clarity for transparent assemblies
- Versatility across multiple industries
- Reliable performance in harsh industrial environments
- A strong alternative to global epoxy systems used in automotive, electronics, and construction industries
Structural Epoxy vs Polyurethane Adhesive
| Feature | Structural Epoxy | PU Adhesive |
|---|
| Strength | Very High | High |
| Rigidity | Rigid | Flexible |
| Chemical Resistance | Excellent | Moderate |
| Optical Clarity | Yes | No |
| Best Use | Structural bonding, electronics | Panels, flexible joints |
Use epoxy structural adhesive when strength and rigidity are critical.
Frequently Asked Questions
What is a structural epoxy adhesive?
A structural epoxy adhesive is a high-strength bonding solution used to permanently join materials like metals, glass, and composites in industrial applications.
Where is Supex E 30CL used?
It is used in panel bonding, electronics potting, laminating, and structural assembly applications.
What materials can this epoxy bond?
It bonds metals, plastics, glass, ceramics, and wood—making it ideal for multi-material industrial bonding.
How long does it take to cure?
It cures at room temperature within 24 hours, with full chemical resistance achieved after several days.
Packaging & Storage
- Available in 2:1 dual cartridges (50 ml & 400 ml)
- Shelf Life: 12 months
- Storage: 8°C – 21°C recommended
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