Toughened Epoxy Adhesive Performance
TECHNIGLUE® R28 Structural Epoxy Adhesive is engineered to deliver balanced mechanical performance for structural bonding applications including:
- High shear strength for structural load transfer
- Excellent resistance to micro-cracking
- Improved durability under vibration and cyclic loads
- Reliable adhesion across composite and metallic substrates
This positions the adhesive as structural engineering material, not just a workshop adhesive.
The toughened epoxy formulation helps maintain bondline integrity in dynamic structures subjected to vibration, thermal expansion and cyclic loading.
This combination of strength, toughness and peel resistance makes R28 suitable for structural bonding applications where durability and safety are critical.
Structural Epoxy Adhesive
TECHNIGLUE® R28 provides a toughened epoxy adhesive solution for structural bonding applications where peel resistance, toughness and long-term durability are critical.
The toughened epoxy formulation of TECHNIGLUE® R28 delivers high peel resistance and structural durability, helping prevent adhesive joint failure in demanding composite applications.
Designed for composite manufacturing environments, R28 delivers reliable structural bonding performance across a wide range of materials including carbon fibre, fibreglass, metals and timber.
High Peel Resistance for Structural Bonding
TECHNIGLUE® R28 is formulated as a toughened epoxy adhesive designed to resist peel and cleavage stresses, which are common failure modes in bonded composite structures.
The toughened chemistry improves bondline durability by absorbing stress within the adhesive layer, reducing the risk of crack propagation and maintaining structural integrity over time.
This provides:
- Improved peel resistance
- Enhanced fatigue durability
- Reduced micro-cracking in bonded assemblies
- Reliable structural load transfer
KEY PERFORMANCE FEATURES
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STRUCTURAL STRENGTH High load-bearing epoxy adhesive
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PEEL RESISTANCE Toughened epoxy resists bondline failure
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TOUGHENED EPOXY FORMULATION Designed for high-strength structural bonding
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SAG-RESISTANT APPLICATION Thixotropic adhesive holds on vertical surfaces
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EXCELLENT GAP FILLING Bridges uneven surfaces and bond gaps
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MICRO-CRACK RESISTANCE Improved durability under dynamic loads
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LOW SHRINK FORMULATION Solvent-free chemistry maintains bondline stability
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PRECISION CARTRIDGE APPLICATION PRECISION CARTRIDGE APPLICATION
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MULTI-MATERIAL ADHESION Bonds composites, metals, timber and engineered substrates
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FATIGUE DURABILITY Maintains bond strength under vibration and cyclic loads
Typical Applications
TECHNIGLUE® R28 structural epoxy adhesive is widely used in demanding composite and industrial bonding applications including:
- Composite panel bonding
- Marine structural assembly
- Carbon fibre and fibreglass structures
- Aluminium and metal bonding
- Structural repair and reinforcement
The thixotropic adhesive formulation allows excellent hold-up on vertical surfaces and gap filling of uneven bonding areas, making it suitable for structural assemblies and repair work.
Multi-Material Structural Bonding
TECHNIGLUE® R28 structural epoxy adhesive provides strong adhesion to a wide range of substrates including:
Fibreglass and carbon fibre composites
Aluminium and metals
Timber and engineered wood
Composite sandwich panels
Mixed-material assemblies
This versatility makes the adhesive suitable for marine, industrial, architectural and transport applications where different materials must be bonded reliably.
Cartridge Application System
TECHNIGLUE® R28 is supplied in a convenient 2:1 cartridge system designed to ensure correct mix ratios and consistent application.
The cartridge format improves productivity in workshop and field environments by:
eliminating manual mixing errors
reducing material waste
improving application control
enabling fast structural bonding repairs
High Peel Resistance
TECHNIGLUE® R28 is formulated as a toughened structural epoxy adhesive designed to resist peel and cleavage stresses, which are common failure modes in bonded composite structures.
Unlike brittle adhesives that can crack under dynamic loading, R28 maintains bond integrity by absorbing stresses across the adhesive joint. This improved toughness provides:
High peel resistance in bonded assemblies
Improved fatigue durability under cyclic loading
Reduced risk of micro-cracking in composite structures
Reliable performance in mixed-material joints
These characteristics are critical for marine, transport and industrial composite structures where adhesive joints must withstand vibration, thermal expansion and long-term structural loads.
TECHNICAL SPECIFICATIONS
| Substrate Suitability | Composites, Metals, Timber & Engineered Substrates |
| Pot Life | 19 min (Standard / Slow / Super Slow) |
| Cure to Solid State | 4 hrs |
| Sag Resistance | 10 mm |
| Compatible Hardener | H15 - Standard / Slow / Super Slow |
| Pack Size | 459 g Cartridge |
Why Peel Strength Matters in Structural Adhesives
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Explore ATL’s full range of structural adhesives on the Adhesives product category page. https://atlcomposites.com.au/products/adhesives/
Learn more about ATL KINETIX epoxy laminating systems used in composite manufacturing.
https://atlcomposites.com.au/products/epoxy-resins/
TECHNIGLUE® R28 is often specified in applications requiring performance similar to other structural epoxy adhesives used in composite manufacturing.
Structural Epoxy Adhesive Alternative to Spabond 445
TECHNIGLUE® R28 provides a toughened epoxy adhesive solution for structural bonding applications requiring high strength, gap filling capability and reliable adhesion across composite and metallic substrates.
