For high-wear industrial environments where high alumina ceramic tile linings must be fixed to steel or concrete under elevated temperatures, Megapoxy 84 provides the high-strength, heat-tolerant bond required to prevent lining failure. It is also formulated for the extreme mechanical demands of locking the inner and outer eccentric bushings in Symons Cone Crushers and other heavy crushing machinery.
Megapoxy 84 is a two-component epoxy paste adhesive that cures to a pale blue finish. It maintains its structural bond up to a maximum continuous operating temperature of 120°C. With a compressive strength of 120 MPa, it withstands the constant heavy impact and high load paths found in industrial crushing machinery and bulk material handling chutes. The thixotropic gel consistency of Part A prevents slumping during application, ensuring a full, even bed thickness when spreading over vertical or overhead surfaces before tiles are pressed into place.
To ensure a permanent, high-strength bond, substrates must be prepared to the following standards before mixing:
Megapoxy 84 is supplied in pre-measured 2.5-litre kits (4 parts Part A to 1 part Part B). To prevent measuring errors, the entire kit should be mixed at one time. Slowly pour the liquid Part B into the thixotropic Part A container to prevent splashing. Mix thoroughly for a minimum of 3 minutes using a putty knife or spatula, scraping both the sides and the bottom of the container to ensure a uniform pale blue appearance.
Apply the mixed adhesive to the prepared steel or concrete at approximately 1.25 litres per m² using a notched trowel. Press the high alumina ceramic tiles firmly into the wet adhesive bed to achieve complete, even contact across the tile surface. Uncured adhesive can be cleaned from tools and surfaces using Megapoxy Thinners and warm soapy water.
Megapoxy 84 is suitable for continuous exposure to temperatures up to 120°C after a full 72-hour cure. This thermal stability prevents adhesive degradation in demanding industrial settings, ensuring wear lining integrity.
No, steel surfaces must be cleaned to a "white metal" finish by grinding or grit blasting. Proper surface preparation is critical for achieving the specified bond strength and preventing premature lining failure.
The adhesive will set after approximately 4 hours at 25°C. For full toughness and to withstand continuous service at its maximum operating temperature of 120°C, allow a minimum of 72 hours at 25°C.
Megapoxy 84 is formulated specifically for high alumina ceramic tile linings in industrial, high-temperature, or high-wear environments. Its properties are overkill for standard tiling and it requires rigorous surface preparation not typical for general applications.
| Application | Key benefit | Primary trades |
|---|---|---|
| Fixing high alumina ceramic tiles to steel in industrial plant | Withstands continuous operating temperatures up to 120°C, preventing tile delamination in high-heat environments. | Industrial maintenance, fabricators, wear lining specialists |
| Bonding high alumina ceramic tiles to concrete for wear protection | Forms a strong, durable bond (120 MPa compressive strength) on prepared concrete, extending the service life of high-wear surfaces. | Civil contractors, mining operations, industrial flooring specialists |
| Locking eccentric bushings in Symons® Cone Crushers and other crushing machinery | Provides a rigid, high-strength bond that maintains component alignment under heavy operational loads and vibration. | Mining maintenance, heavy machinery repair, industrial mechanics |
A first-time-right result is impossible without correct prep. This product is engineered for adhesion to professionally prepared, clean, and dry substrates.
Clean all steel to a 'white metal' finish. Use grinding or grit blasting to remove all rust, mill scale, and contaminants. The surface must be 100% clean and dry.
Scabble or grit blast concrete to remove the weak laitance layer. You must expose the solid, clean, and firmly held aggregate. Ensure all dust is removed.
Ensure the bonding face of the ceramic tile is clean and grease free. Wipe with Megapoxy Thinners if necessary and allow to dry.
Megapoxy 84 is a two-component system. Both parts must be thoroughly combined in the correct ratio to achieve the specified properties.
It is highly advisable to mix the whole 2.5L kit at one time to avoid ratio errors. Add the entire contents of Part B (Blue Liquid) slowly into Part A (White Paste).
Using a putty knife or spatula, mix thoroughly for a minimum of 3 minutes. Continuously scrape the sides and bottom of the mixing container to ensure all material is incorporated. The final mix should be a uniform Pale Blue.
Apply the mixed adhesive and bed the tiles, ensuring full contact for a void-free bond.
Apply the mixed Megapoxy 84 to the prepared substrate at a rate of approximately 1.25 litres per m². Spread evenly using a notched trowel.
Place the high alumina ceramic tiles onto the wet adhesive bed. Press firmly to ensure full, even contact of the tile surface and collapse the trowel ridges.
Clean excess material and tools using Megapoxy Thinners and warm soapy water for a tidy finish. The product sets in ~4 hours at 25°C.
Danger: Megapoxy 84 Part B is corrosive and can cause severe skin burns and eye damage. Part A causes skin irritation and may cause an allergic skin reaction. Both parts are classified as Schedule 5 Poisons (Caution).
Wear safety shoes, nitrile rubber gloves suitable for intermittent contact, and safety glasses. A suitable respirator should be worn if there is a risk of inhaling dust, vapours, mist, or aerosols. Ensure all PPE is appropriate for the task and risk assessment.
Natural ventilation is typically adequate under normal use conditions. For enclosed spaces or where vapours are likely, ensure increased ventilation or local exhaust is provided.
Store in a cool, dry, well-ventilated area, out of direct sunlight and away from foodstuffs, incompatible materials (e.g., oxidising agents), and sources of heat/ignition. Keep containers upright and closed when not in use. Store Part B locked up. Dispose of material and containers in accordance with local, regional, national, and international regulations.
Achieving a reliable, high-strength bond with Megapoxy 84 depends on meticulous surface preparation. The correct prep ensures optimal adhesion and prevents bond failure under service conditions.
Surface prep: Clean to a "white metal" finish. This typically requires grinding or grit blasting to remove all mill scale, rust, coatings, and contaminants. The prepared surface must be clean and grease-free.
Primer: Not required for this application.
Surface prep: Scabble back or grit blast to expose firmly held aggregate. Remove all laitance, loose material, curing compounds, and contaminants. The surface must be clean and grease-free.
Primer: Not required for this application.
Surface prep: Ensure the tile surfaces to be bonded are clean and grease-free. Abrasion is generally not required for the tile surface itself.
Primer: Not required.
| Property | Value |
|---|---|
| Mixing Ratio (Part A to Part B) | 4:1 (by volume) |
| Work Time | 30 minutes at 25°C |
| Minimum Application Temperature | 10°C |
| Maximum Operating Temperature | 120°C (continuous exposure) |
| Initial Set Time | 4 hours at 25°C |
| Toughness Development | After 48 hours |
| Full Cure for Service | 72 hours at 25°C |
| Compressive Strength | 120 MPa |
| Flexural Strength | 55 MPa |
| Hardness Shore D (ASTM D2240-00) | 70 minimum |
| Thermal Coefficient of Expansion | 0.00006 k-1 |
| Thermal Conductivity | 0.4 W/(m*K) |
| Specific Gravity Part A (at 25°C) | 1.05 - 1.15 |
| Specific Gravity Part B (at 25°C) | 0.94 - 0.96 |
| Mixed Specific Gravity (at 25°C) | 1.05 |
| Colour Part A | White |
| Colour Part B | Blue |
| Appearance Mixed | Pale Blue |
| Consistency Part A | Thixotropic Gel/Paste |
| Consistency Part B | Liquid |
| Total VOC | Nil |
Here are some common examples on where Megapoxy 84 used by our customers.
