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Megapoxy 84 is a specialised two-component epoxy paste adhesive engineered for the permanent installation of high alumina ceramic tile linings to steel and concrete in high-heat industrial environments. This formulation maintains watertight integrity and extreme mechanical performance under a 120°C continuous service rating, effectively preventing catastrophic delamination in abrasive processing zones.
To ensure maximum bond strength and prevent asset downtime, steel substrates must be prepared to a white metal finish and concrete scabbled to expose aggregate. Megapoxy 84 provides 120 MPa ultimate compressive strength and 55 MPa flexural strength, meeting the rigorous compliance standards required for power generation and mineral processing facilities.
Frequently Asked Questions
How do I properly prepare steel before using Megapoxy 84?
Correct preparation is critical for bonding epoxy adhesive to steel. The substrate must be cleaned to a 'white metal' finish using grinding or grit blasting. This removes all rust, scale, and contaminants, creating the necessary profile for the epoxy to achieve a full-strength bond. Failure to do this is the primary cause of bond failure on steel.
How long does Megapoxy 84 take to cure before I can run the machine?
Megapoxy 84 achieves its full typical cure in 72 hours at 25°C. While it sets after approximately 4 hours, it's critical to avoid exposure to elevated temperatures for the first 48 hours. To get the full 120°C service temperature resistance, you must allow the full 72-hour cure.
What is the mix ratio for Megapoxy 84?
The mix ratio is 4 parts Part A to 1 part Part B by volume. By weight, this is 100 grams of Part A to 22.7 grams of Part B. To ensure predictable performance and avoid mixing errors, we strongly recommend mixing the entire pre-measured kit at one time.
What is the best way to apply Megapoxy 84?
Apply the thoroughly mixed epoxy paste to the prepared steel or concrete surface using a notched trowel. The recommended application rate is approximately 1.25 litres per square metre. After spreading, press the high alumina ceramic tiles firmly onto the bed to ensure full, even contact with the adhesive.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Fixing high alumina ceramic tile linings to steel | Exceptional bond strength (120 MPa) and thermal stability (120°C) prevents lining failure in high-heat, high-stress industrial environments. | Remedial Contractors, Asset Maintenance, Civil Engineers |
| Adhering ceramic tiles to concrete pits or hoppers | High flexural (55 MPa) and compressive (120 MPa) strength withstands mechanical loads and vibration without delamination. | Civil Engineers, Builders, Remedial Contractors |
| Industrial adhesive for high-temperature service conditions | Provides a predictable, high-performance bond where other adhesives would fail due to heat (120°C service temp). | Specifiers, Engineers, Asset Maintenance |
Applying Megapoxy 84: Enhanced Protocols & Best Practices
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Surface Preparation (The Critical Step)
A first-time-right result is impossible without correct prep. This product is engineered for adhesion to professionally prepared, clean, and dry substrates.
Steel 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.
Concrete Substrates
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.
Tile Preparation
Ensure the bonding face of the ceramic tile is clean and grease free. Wipe with Megapoxy Thinners if necessary and allow to dry.
Timing: Ensure all prep is complete before mixing, as the 30-minute pot life starts once components are combined.Pro Tip: Do not try to "make do" with a wire brush or acid etching. This adhesive's 120 MPa strength requires a mechanical profile that only blasting or grinding can provide. -
Mixing (Ensuring Full Strength)
Megapoxy 84 is a two-component system. Both parts must be thoroughly combined in the correct ratio to achieve the specified properties.
Combining Components
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).
Thorough Mixing
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.
Timing: The 30-minute working time at 25°C begins now.Pro Tip: Adding Part B slowly prevents splashing. Incomplete mixing is the number one cause of soft spots or cure failure. Do not rush this step. -
Application & Curing
Apply the mixed adhesive and bed the tiles, ensuring full contact for a void-free bond.
Trowel Application
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.
Bedding Tiles
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-up & Curing
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.
Timing: Crucial: The product develops toughness after 48 hours. Avoid all exposure to elevated temperatures during this initial period. Allow a full 72-hour cure before subjecting the surface to the 120°C maximum service temperature.Pro Tip: While it's brittle at first, the toughness develops. Rushing the return-to-service before 72 hours will compromise the bond and lead to failure. Protect your work and your reputation by following the full cure schedule.
Limitations & Safety
Product Limitations
Not for use on unprepared surfaces. Adhesion is compromised without 'white metal' or scabbled concrete preparation.
Not for use in applications exceeding 120°C continuous service temperature.
Do not apply to damp or contaminated surfaces. All substrates must be clean, dry, and grease-free.
This product is for professional, industrial use only. It requires specialised preparation techniques (grit blasting) and adherence to strict mix/cure schedules.
Safety & Handling Requirements
Personal Protective Equipment
Wear protective clothing, safety glasses with side shields, and chemical-resistant gloves (e.g., nitrile rubber).
Ventilation Requirements
Natural ventilation should be adequate under normal use conditions. Work in a well-ventilated area.
Fire & Handling Precautions
Non-combustible material. Store in a cool, dry, well-ventilated place and out of direct sunlight.
Emergency First Aid
Eyes:
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor.
Skin:
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. If skin irritation or rash occurs: Get medical advice/attention.
Inhaled:
Remove victim from exposure. Allow patient to assume most comfortable position and keep warm. Seek medical advice if effects persist.
Swallowed:
IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Give a glass of water to drink. Immediately call a POISON CENTER or doctor.
Seek medical attention immediately in all cases of serious exposure.
Megapoxy 84 Application Guide
Steel (Carbon, Mild)
Surface Preparation
Must be prepared to a 'white metal' finish. This is achieved by grinding or, preferably, grit blasting to remove all contaminants, rust, and mill scale. The surface must be clean, dry, and grease-free.
Primer Requirements
No primer typically required
Adhesion is direct to the prepared 'white metal' surface. Ensure all blasting media or grinding dust is removed before application.
Concrete
Surface Preparation
Concrete must be scabbled back or grit blasted to remove all laitance and expose firmly held, clean aggregate. The surface must be sound, clean, and free from all contaminants, grease, or curing compounds.
Primer Requirements
No primer typically required
Ensure concrete is fully cured and moisture-free. Do not apply to damp or green concrete.
High Alumina Ceramic Tile
Surface Preparation
The surface of the tiles to be bonded must be clean and grease free.
Primer Requirements
No primer typically required
Wipe tiles with a clean solvent like Megapoxy Thinners to remove any dust or residue from manufacturing or transit. Allow to flash off completely before bonding.
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