Techniglue R28
Toughened Adhesive

Product info

R28 — Toughened Epoxy Cartridge Adhesive

TECHNIGLUE® R28 is a toughened, thixotropic, solvent-free epoxy adhesive designed for high-strength structural bonding of composites and metals. Engineered for precision application, R28 provides excellent gap-filling properties and reliable 10 mm sag resistance for clean, accurate adhesive placement on vertical surfaces.

Supplied in a convenient 2:1 self-mixing cartridge, R28 ensures fast, consistent dispensing with no manual measuring. The colour-change indicator (yellow resin + black hardener → uniform black) confirms correct mixing and provides a clean aesthetic finish on carbon composites.

R28 is widely used across marine, defence, aerospace, industrial, architectural, and automotive applications.

KEY PERFORMANCE FEATURES

Toughened Epoxy For High-Strength Structural Bonding
Thixotropic, Sag-Resistant Formula For Vertical Applications
Excellent Gap-Filling Capability On Uneven Surfaces
Clean Colour-Change Mixing Indicator For Quality Assurance
Solvent-Free, Low-Shrink Formulation
Reliable Room-Temperature Cure Performance
Ideal For Precision Bonding & Field Repairs
Strong Adhesion To Composites, Metals, Timber & Engineered Materials

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

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frequently asked questions

How does ATL tailor composite systems for different industries?

Every industry has distinct performance, compliance, and manufacturing requirements. ATL’s in-house chemists and engineers develop and refine epoxy systems, adhesives, and core materials to meet the specific demands of marine, defence, aerospace, automotive, industrial, civil, architectural, and sporting applications — ensuring every product delivers optimal strength, efficiency, and durability.

Can ATL customise materials for my project or process?

Yes. ATL offers custom formulation and process engineering support to align material performance with your production requirements — whether infusion, hand lay-up, lamination, bonding, or CNC-routed panel construction. Our technical team collaborates closely with customers to deliver precision-matched resin systems and structural solutions for unique applications.

Are ATL’s composite systems certified for high-performance applications?

Absolutely. ATL operates under an ISO 9001:2015-certified quality management system, with selected materials approved by DNV for use in structural and high-load applications. Every ATL system is manufactured to exacting standards of performance, consistency, and traceability to meet the demands of defence, industrial, and advanced engineering environments.

What makes ATL’s materials suitable for large-scale or structural builds?

ATL’s epoxy systems, structural panels, and composite cores are engineered for high strength-to-weight performance, dimensional stability, and fatigue resistance. These attributes make ATL materials ideal for large composite assemblies, modular structures, and precision-engineered components where long-term strength, weight reduction, and reliability are essential.

Does ATL offer sustainable or bio-based composite options?

Yes. ATL is committed to advancing sustainable composite technology, offering USDA-Certified Bio-Based epoxy systems and environmentally conscious materials that reduce waste, extend service life, and minimise environmental impact. Our ongoing R&D focuses on improving sustainability without compromising structural integrity or mechanical performance.

How can I select the right ATL system for my application?

Choosing the ideal composite system depends on your structure’s design, load requirements, manufacturing process, and environmental exposure. ATL’s in-house engineers and chemists provide tailored advice to ensure the correct combination of resin, core, adhesive, and surface technology for your project.
To discuss your application or request technical guidance, contact ATL’s Technical Team — we’ll help you identify the most effective and efficient composite solution for your build.

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