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When a critical bond or repair needs to set fast and hold strong, especially on vertical or overhead surfaces, Megapoxy PF provides a reliable solution. This rapid-set epoxy paste adhesive gives you the immediate adhesion and high strength required for on-the-spot fixes, minimising downtime and ensuring structural integrity without delay.
Megapoxy PF was developed as a 'hardens-as-you-hold-it' solution for urgent, high-strength bonding and filling tasks. It excels in scenarios where immediate adhesion is paramount, such as emergency repairs to tanks, pipes, or machinery, and for essential structural bonding on demanding surfaces like concrete, metal, and natural stone. Its formulation ensures a robust, permanent bond that stands up to significant structural loads.
Megapoxy PF is built for speed and strength where it counts:
Megapoxy PF is supplied as a two-part system with a simple 1:1 mix ratio by volume. With a work time of just 3 minutes at 25°C, it requires quick, thorough mixing before application. Its creamy, non-sag consistency ensures easy workability and placement, particularly on vertical or overhead surfaces. Thorough surface preparation is critical for optimal adhesion; concrete should be mechanically abraded or acid-etched and surface dry, while metals require grit blasting or mechanical abrasion to a bright finish, followed by degreasing. All existing coatings must be removed to achieve maximum bond strength. Tools and implements should be cleaned immediately after use with Megapoxy Thinners.
Megapoxy PF is frequently specified for critical tasks across various construction and repair scenarios:
Megapoxy PF often acts as a critical first step in concrete crack repair systems. It's used for cap sealing prior to injection with other low-viscosity epoxies like Megapoxy H, or to seal internal breaches when liquid resins are applied. Its rapid set ensures the crack can be prepared and sealed quickly, allowing subsequent injection steps to proceed without delay. This sequence is vital for effective crack management in structures where liquid ingress or structural integrity is a concern.
While Megapoxy PF offers rapid-set, high-strength bonding and surface sealing, products like Megapoxy H Epoxy Resin are formulated for deeper penetration into concrete cracks. Megapoxy PF is typically used as a surface cap or a secondary sealant to contain an injection, whereas Megapoxy H is the low-viscosity resin designed to be injected into those fine cracks. Choose PF for immediate surface adhesion and structural paste repairs, and H for the subsequent, deeper structural crack injection.
Yes, Megapoxy PF is designed for immediate on-site emergency repairs to concrete structures. It sets in 7 minutes at 25°C and achieves over half its ultimate strength within 15 minutes, allowing for rapid return to service.
No, it is recommended to remove all coatings before bonding with Megapoxy PF. Bonding to coated surfaces will result in inferior bond strengths compared to direct adhesion to a properly prepared substrate.
Megapoxy PF sets in 7 minutes at 25°C and reaches 90% cure within 1 hour at 25°C. It can be machined after 30 minutes of cure at 25°C, providing rapid structural integrity.
Metal surfaces should be grit blasted to AS CK 9.4 - 1964 Class 3 finish, or mechanically abraded to clean, bright metal. Afterwards, degrease the surface by flooding with an industrial-grade degreaser. Wire brushing is insufficient for maximum adhesion.
No, when properly mixed, Megapoxy PF will not stain or discolour white or light-coloured marble and ceramics. This makes it suitable for aesthetic bonding applications.
| Application | Key benefit | Primary trades |
|---|---|---|
| Bonding precast concrete articles | Forms very high strength, permanent structural bonds (70 MPa compressive, >3 MPa bond to concrete). | Civil engineers, concreters |
| Emergency repairs to tanks, pipes, machinery, concrete | Rapid set in 7 minutes at 25°C, "hardens-as-you-hold-it" for immediate on-site fixes. | Maintenance teams, plumbers, facility managers |
| Grouting bolts into concrete or masonry | Provides high compressive (70 MPa) and tensile shear strength (8 MPa), securing fasteners quickly. | Civil engineers, mechanical fitters |
| Bonding metal to metal or concrete | Achieves 16 MPa tensile bond strength to steel, creating durable connections. | Fabricators, steel fixers, maintenance teams |
| Repairing concrete floors, stairs, columns, in-situ concrete | Excellent tensile and compressive strengths, superior to concrete, with machinable cure in 30 minutes. | Concreters, repair specialists |
| Bonding natural stones, bricks, and ceramics | Will not stain or discolour white or light-coloured materials, maintaining aesthetic integrity. | Masons, tilers |
| Flush-filling countersunk screws in fibre cement sheet | Smooth, workable paste with non-sag properties, leaves a clean, repairable surface. | Carpenters, plasterers |
Warning: Megapoxy PF is classified as hazardous according to Safe Work Australia GHS 7 criteria. Both Part A and Part B are Schedule 5 poisons.
Wear safety shoes, gloves (nitrile rubber recommended), and safety glasses. Ensure PPE is suitable for the work and identified hazards. Avoid contact with clothing, skin, and eyes. Use eyewash stations and safety showers if working with the product.
Natural ventilation should be adequate under normal use conditions. Avoid inhalation of dust.
Store in a cool, dry, well-ventilated place, out of direct sunlight and away from foodstuffs, incompatible materials, heat, and ignition sources. Keep containers upright and closed, checking regularly for spills. Part A is classified as a Class 9 Miscellaneous Dangerous Good (UN3082, Marine Pollutant) for transport and must be stored in accordance with relevant regulations. Dispose of material and containers according to local, regional, national, and international regulations. Recycle where possible.
Proper surface preparation is critical for Megapoxy PF to achieve its documented bond strengths and prevent adhesive failure.
Surface prep: Ensure concrete is free from grease and oil. Clean with industrial heavy-duty degreaser if needed. Remove surface laitance via mechanical abrasion like scabbling, grit blasting, or grinding. If mechanical methods are not possible, acid etching with a 1:1 hydrochloric acid and water solution (0.5 L/m²) is an alternative. Allow 10 minutes to react, then wash thoroughly and scrub to remove loose sand. Allow to dry for 24 hours. Concrete must be surface dry for maximum adhesion.
Primer: Not required. Adheres directly to prepared concrete.
Surface prep: Grit blast to AS CK 9.4 - 1964 Class 3 finish, or mechanically abrade to a clean, bright metal. Immediately degrease the surface by flooding with an industrial-grade degreaser. Wire brushing is not sufficient for optimal adhesion.
Primer: Not required. Adheres directly to prepared metal.
Surface prep: All coatings must be fully removed to avoid inferior bond strengths. For painted concrete, flame-clean or mechanically treat with a scutching tool, then diamond grind or scabble. For painted/galvanised metals, use a quality paint stripper, followed by grit blasting or grinding to a bright metal finish.
Primer: Not applicable. Coating removal is mandatory.
| Property | Value |
|---|---|
| Mixing Ratio by Volume | 1 Part A to 1 Part B |
| Work Time at 25°C | 3 minutes |
| Minimum Cure Time at 15°C | 2 hours |
| Minimum Cure Time at 25°C | 1 hour |
| Minimum Cure Time at 35°C | 30 minutes |
| Minimum Application Temperature | 10°C |
| Maximum Operating Temperature | 80°C |
| Colour Part A | White |
| Colour Part B | White or Dark Grey |
| Appearance Mixed | White or Grey |
| Compressive Strength (ASTM D695-23) | 70 MPa |
| Bond Strength Concrete (ASTM D4541) | >3 MPa |
| Tensile Bond Strength Steel (ASTM D897-08) | 16 MPa |
| Modulus of Elasticity (ASTM D695) | 2 GPa |
| Flexural Strength (ASTM D790-17) | 46 MPa |
| Tensile Strength (ASTM D638-22) | 21 MPa |
| Tensile Shear Strength (ASTM D1002-10) | 8 MPa |
| Hardness (Shore D - ASTM D2240-00) | 75 |
| Coefficient of Linear Thermal Expansion, Mean | 57.9 x 10^-6 mm/mm/°C |
| Dielectric Strength 50Hz @25°C | 190 Kv/cm |
| VOC Content | Nil |
| Form | Paste |
| Specific Gravity (Part A, 25°C) | 1.40-1.50 |
| Specific Gravity (Part B, 25°C) | 1.48-1.52 |
| Flash Point | >200 °C |
Here are some common examples on where Megapoxy PF used by our customers.
