Epoxy Resins

Why are epoxy resins used in industrial coatings

Why are epoxy resins used in industrial coatings? Epoxy resins are widely used in industrial coatings for several reasons, owing to their exceptional properties and performance characteristics. Here are some key reasons why epoxy resins are favored for industrial coatings: Chemical Resistance: Epoxy coatings are highly resistant to a wide…

Jetwash concrete

How to Prepare Concrete for Epoxy Coatings

Proper surface preparation is crucial for achieving a strong and durable bond between concrete and our epoxy coatings. Here are the general steps for preparing concrete surfaces for epoxy coatings:

Clean the concrete surface:

Remove any dirt, debris, oil, grease, or other contaminants from the concrete surface using a pressure washer, degreaser, or other suitable cleaning method. The surface must be completely clean and free of any loose material or coatings.

Evaluate the concrete surface:

Check the concrete surface for any cracks, spalls, or other defects that need to be repaired before applying the epoxy coating. Use a suitable patching or repair compound such as M-CRETE 100 Lightweight Epoxy Repair Mortar for vertical surfaces or M-CRETE 200 Heavy Duty Epoxy Screed for horizontal surfaces to fill and smooth any surface irregularities.

Profile the concrete surface:

Use a mechanical or chemical method to create a suitable profile on the concrete surface to enhance adhesion of the epoxy coating. Mechanical methods include shot blasting, scarifying, or grinding, while chemical methods involve using acid etching or a suitable surface conditioner. The appropriate method will depend on the condition of the concrete and the type of epoxy coating being used.

Remove dust and debris:

Thoroughly clean the concrete surface of any dust, debris, or residue created during the profiling process. Use a vacuum, blower, or other suitable method to ensure the surface is completely clean.

Apply a primer:

Depending on the type of epoxy coating being used, a primer may be required, we suggest M-PRIME 104 Damp Tolerant Epoxy Primer to enhance adhesion and prevent any potential outgassing or bubbling. Apply the primer according to the manufacturer’s instructions and allow it to dry completely before applying the epoxy coating.

Apply the epoxy coating:

Apply the epoxy coating according to the the data sheet instructions, using a suitable method such as rolling, brushing, or spraying. Work in small sections and avoid over-applying the coating to prevent any potential issues with bubbles or unevenness.

Correct surface preparation is critical for achieving a strong and durable bond between concrete and epoxy coatings and can help to ensure the longevity and performance of the coating system. It is important to consult the manufacturer’s data sheet fro each material used.

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Surface profice Sa 1 3

Grit-Blast Cleaning – Steel

Why do Surface preparations standards exist? Surface preparation standards exist to provide a consistent and uniform level of surface cleanliness and roughness for different types of substrates in order to ensure optimal adhesion, performance, and durability of coatings and other protective treatments. Proper surface preparation is critical for the success…

Advantages of using an epoxy novolac coating

What is an Epoxy Novolac Coating

What is an Epoxy Novolac Coating

An epoxy novolac coating is a type of protective coating that is commonly used in industrial and commercial settings. It is made up of a two-part system, consisting of an epoxy resin and a novolac hardener. Novolac is a type of phenolic resin that is known for its exceptional resistance to chemicals, heat, and other harsh environmental conditions.

Epoxy novolac coatings are often used in applications where traditional epoxy coatings are not suitable, such as environments that are exposed to high temperatures or harsh chemicals.  

They are frequently used in the chemical processing industry, as well as in oil and gas refineries, power plants, and other industrial settings.

Epoxy novolac coatings are known for their excellent adhesion to substrates, as well as their ability to provide superior protection against corrosion, abrasion, and chemical attack. 

They are also highly resistant to thermal shock and are capable of withstanding temperatures up to 300°F (149°C) or higher, depending on the specific formulation.

Overall, epoxy novolac coatings are a high-performance option for protecting and extending the life of equipment and structures in harsh and demanding environments.

What are the advantages of using an Epoxy Novolac Coating

Novolac is a type of phenolic resin that offers several advantages as a component of epoxy coatings and other materials. Some of the advantages of novolac include:

  1. Chemical resistance: Novolac resins have excellent resistance to a wide range of chemicals, including acids, alkalis, solvents, and other aggressive substances. This makes them ideal for use in applications where protection against chemical attack is critical.

  2. Thermal stability: Novolac resins are highly stable at high temperatures, making them suitable for use in environments that are exposed to heat and thermal cycling.

  3. Durability: Novolac resins are known for their exceptional durability and resistance to wear and abrasion, making them ideal for use in coatings and other protective materials.

  4. Adhesion: Novolac resins have excellent adhesion to a wide range of substrates, including metals, concrete, and other materials.

  5. Customization: Novolac resins can be modified to meet specific performance requirements, such as increased chemical resistance or improved thermal stability.

Overall, novolac resins offer a range of advantages that make them ideal for use in a wide range of applications, including protective coatings, adhesives, and composites.

Our Epoxy Novolac Coatings

Typical - Novolac Epoxy Chemical Resistance Chart

Enhanced Chemical Resistance when post cured

Acetic Acid 10% at 50˚C
Ethanol 100% at 75˚C
Sulphuric Acid 98% at 75˚C
Sulphuric Acid 25 -75% at 90˚C
Hydrochloric Acid 10-36% at 50˚C
Phosphoric Acid 20-40% at 60˚C
Nitric Acid 5% at 50˚C
Sodium Hydroxide 40% at 90˚C
Sodium Chloride 20% at 90˚C

Chemical Resistance tested at 20˚C

Chromic 10%
Hydrobromic 40%
Hydrochloric 36%
Nitric 10%
Nitrous 10%
Phosphoric 75%
Sulphuric 98%
Acetic 10%
Carbonic 30%
Citric 30%
Folic 20%
Formic 10%
Lactic 10%
Ammonium hydroxide 30%
Potassium hydroxide 20%
Sodium hydroxide 40%
Sodium Bisulfate 40%
Chemical Resistance tested at 20˚C

Butanol 100%
Ethylene glycol 100%
Hexanol 100%
Propylene glycol 100%
Aniline 100%
Diethanolamine 100%
Hydrazine 100%
Methylamine 40%
Cyclohexane 100%
Hexane 100%
Octane 100%
Benzene 100%
Naphtha 100%
Toluene 100%
Xylene 100%

Tips for working with Epoxy Novolac Coatings

When using an epoxy novolac coating for your project, it’s important to remember a few key tips. First, you need to ensure that the surface preparation, temperature and humidity levels are in the ideal range for the product been used, this information is usually on the epoxy novolac data sheet.

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Clock Spring Leak Stopper Low Profile web 1

Pipe Leak Sealing

Process Water Pipeline A UK manufacturing plant had a leak on their process water line which needed urgent attention to avoid plant shutdown. CSNRI mobilised within the hour and applied a stopgap solution to stop the leak and allow the line to keep operating to support plant activity. Leak Stopper was…

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