Ressi EPO Chem prime is a low viscosity chemical resistant epoxy primer based on specially modified Bisphenol-A Based Resins and a specially formulated Modified chemical resistant cycloaliphatic amine based epoxy curing agent which is free from Nonyl phenol. This is specially formulated for concrete and metal surface. Its high chemical resistant nature makes it an ideal coating for a variety of different metalic surfaces.
Ressi EPO Chem Prime 402
Ressi EPO Chem prime is a low viscosity chemical resistant epoxy primer based on specially modified Bisphenol-A Based Resins and a specially formulated Modified chemical resistant cycloaliphatic amine based epoxy curing agent which is free from Nonyl phenol. This is specially formulated for concrete and metal surface. Its high chemical resistant nature makes it an ideal coating for a variety of different metalic surfaces.
Ressi EPO Chem prime 402 is a low viscosity chemical resistant epoxy primer based on specially modified Bisphenol-A Based Resins and a specially formulated modified chemical resistant cycloaliphatic amine-based epoxy curing agent which is free from Nonyl phenol. This is specially formulated for concrete and metal surface. Its high chemical resistant nature makes it an ideal coating for a variety of metallic surfaces. This primer is also compatible with a variety of other substrates such as wood, ceramics, leather, glass, selected plastics and so on.
Proper surface preparation is crucial for achieving optimal adhesion and performance of Ressi EPO Chem prime 402. Follow these guidelines for preparing concrete and metal surfaces:
For Concrete Surfaces:Surface Inspection: Ensure the concrete surface is structurally sound, clean, and free from contaminants such as grease, oil, dirt, loose particles, and curing compounds.
Cleaning: Use mechanical methods like grinding, abrasive blasting, or shot blasting to remove surface contaminants and create a clean, open texture. Wash the surface with clean water and allow it to dry completely.
Moisture Testing: Check the moisture content of the concrete. The substrate must have a moisture content below 4% to ensure proper adhesion. For damp concrete, ensure the primer is suitable for such conditions or use specialized methods to reduce moisture levels. Incase high levels of initial moisture persists, Application of other chemical resistant moisture cure primers from the ressichem range can be used.
Crack Repair and Filling: of other Fill any visible cracks, joints, or holes with a suitable epoxy filler to provide a smooth and uniform surface.
Surface Profile: Achieve a concrete surface profile as per International Concrete Repair Institute (ICRI) guidelines for optimal adhesion.
For Metal SurfacesSurface Inspection: Inspect the metal surface for rust, mill scale, grease, oil, or other contaminants that could interfere with adhesion.
Cleaning: Use solvent cleaning or detergent washing to remove grease, oil, and dirt. Follow this with a thorough rinse using clean water. Allow the surface to dry completely before proceeding.
Rust and Mill Scale Removal: Use abrasive blasting as per proper international standards to remove rust, mill scale, and existing coatings. For less aggressive preparation, hand or power tool cleaning as per international norms may suffice, but optimal adhesion is achieved with abrasive blasting.
Surface Profile: Achieve an anchor profile of 50-75 microns for proper mechanical bonding of the primer.
Passivation: After cleaning, apply the primer immediately to prevent flash rusting or oxidation of the metal surface.
General NotesTemperature and Humidity: Ensure the substrate and ambient temperatures are within the recommended range (refer to the product technical table). Avoid application in high humidity or damp conditions.
Surface Dryness: Ensure all surfaces are dry and free from standing water before applying the primer.
Testing: Conduct a small adhesion test if surface conditions are uncertain to ensure compatibility and performance.
Proper surface preparation ensures optimal adhesion, durability, and performance of Ressi EPO Chem Prime 402, contributing to a long-lasting and effective coating system.
The proper application of Ressi EPO Chem prime 402 is essential to achieve the desired performance and durability. Follow this step-by-step methodology:
Inspect the Components: Ensure the base and hardener components are free from contamination and at room temperature (20-35°C) before mixing.
Mixing Proportions: Follow the mixing ratio specified on the product label and this technical datasheet. Typically, mix the base (Part A) and curing agent (Part B) in the recommended ratio by weight or volume.
Mixing Process: Use a low-speed mechanical mixer (300-400 RPM) fitted with a suitable paddle to mix the components. Add Part B (curing agent) into Part A (base) slowly and mix thoroughly for 3-5 minutes until a homogeneous mixture is obtained.
Priming the Surface: Ensure the surface has been prepared as per the surface preparation guidelines. The substrate should be clean, dry, and free of contaminants.
Application Tools: Apply the primer using a brush, roller, or airless spray equipment depending on the project requirements. Ensure the tools are clean and suitable for epoxy-based materials.
Application Process: Apply the primer evenly to the substrate, ensuring full coverage without leaving puddles or excess material. Maintain the recommended wet film thickness (WFT) specified in the product datasheet for optimal performance.
Second Coat (if required): Allow the first coat to cure as per the recommended time before applying a second coat, if specified.
Initial Curing: Allow the primer to cure in a controlled environment with the recommended temperature and humidity. Avoid exposure to water, chemicals, or mechanical loads during curing.
Full Cure: The primer achieves full chemical and mechanical properties after the curing time specified in the datasheet (typically 7 days at 25°C). Adjust curing time for variations in temperature.
Personal Protection: Wear appropriate personal protective equipment (PPE), including gloves, goggles, and respiratory protection, during mixing and application.
Ventilation: Ensure proper ventilation in enclosed or poorly ventilated spaces during application to avoid exposure to fumes.
Spills and Disposal: Handle spills immediately using absorbent material and dispose of waste in accordance with local regulations.
Ensure ambient and substrate temperatures are within the recommended range (10-35°C) during application. Avoid application in extreme temperatures or direct sunlight.
Avoid applying in high humidity (above 85%) or when dew point conditions may cause condensation on the substrate.
Conduct a small patch test if substrate or environmental conditions are uncertain to ensure proper adhesion and compatibility. By following these steps, Ressi EPO Chem Prime 402 will provide reliable, long-lasting performance across a wide range of applications.
Ressi EPO Chem Prime 402 is available in the following packaging:
1.5 KG Pack :
Part A 1 KG
Part B 500g
15 KG Pack :
Part A 10 KG
Part B 05 KG
45 KG Pack :
Part A 30 KG
Part B 15 KG
Property | Test Method | Result |
---|---|---|
Appearance Part A | Visual | Low viscosity, clear liquid |
Appearance Part B | Visual | Low viscosity, clear liquid |
Mix ratio (Part A: Part B) | Theoretical | 100 : 50 |
Mix Density | - | 1.05 g / cc |
Coverage per kg material @ 1 mm thickness | - | 9 - 10 SFT |
Flash Point | ASTM D 93 | >117°C |
Pot life (300g mix) @ 25°C | - | 35 - 60 min |
Gel time | - | 4 hours |
Hardening time | - | 24 hours |
Full Cure | - | 7 Days |
Flexural Strength (MPa) | ASTM D 790 | 77.0 @ 7 Days |
Compressive Strength (MPa) | ASTM D 695 | 102.0 @ 7 Days |
*Note: At 40°C pot life will half so application should be planned accordingly.
Typical Results under Laboratory Conditions
Chemicals Solutions | Chemical Resistance |
---|---|
HCL (10%) | ★★★ |
Sulphuric Acid (10%) | ★★★ |
Acetic Acid (10%) | ★★ |
Lactic Acid (20%) | ★★ |
Formic Acid (20%) | NR |
Phosphoric Acid (20%) | ★★ |
Nitric Acid (30%) | ★★ |
Caustic (20%) | ★★★ |
Ammonia Solution (18%) | ★★★ |
Hypochlorite (30%) | ★★★ |
Hydrogen Peroxide (50%) | ★★★ |
Ethanol | ★ |
Methanol | ★ |
IPA | ★★★ |
MEK | ★★ |
Xylene | ★★★ |
Mineral Spirit | ★★★ |
KEY ★ (Fair) ★★ (Good) ★★★ (Excellent) NR (not Recommended) |
Property | Test Method | 100/50 |
---|---|---|
*Flexural Strength | ASTM D 790 | 81.2 MPa |
*Compressive Strength - Ultimate | ASTM D 695 | 70.5 MPa |
*Typical results under laboratory conditions.