Choosing the best epoxy coating for your storage tanks takes time and effort.
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To speed up the selection process and ensure you make the right choice, below, the Industrial Inspection & Consulting team weighs the pros and cons of solvent-based, water-based, and 100% solids epoxies.
Solvent-based epoxies have been around since the mid-20th century. They use organic solvents to dissolve epoxy resins and hardeners before application. Once applied, the solvents evaporate, leaving behind a durable, cross-linked epoxy coating.
Solvent-based epoxies have excellent adhesion and chemical resistance. They can withstand exposure to hydrocarbons, acids, and alkalis. Formulations with high solids content also have abrasion and impact resistance. &#; Not NSF Approved for Potable Water
Will it meet your requirements?
For industrial storage tanks subject to harsh conditions, solvent-based epoxy is a good choice. However, the organic solvents present safety hazards and necessitate special handling. They require adequate ventilation, emit a strong odor during application, and release volatile organic compounds (VOCs) during curing. These factors can pose environmental concerns. This epoxy coating also requires more rigorous surface preparation for proper adhesion.
Water-based epoxy is a balanced choice: They provide exceptional performance while reducing environmental impact.
Many water-based epoxies contain little to no volatile organic compounds, which makes them an environmentally friendly option compared to solvent-based epoxies. They produce minimal hazardous air pollutants and have a nearly non-existent smell. &#; Not used in Potable Water or Industrial Coatings
Will it meet your requirements?
In terms of performance, water-based epoxy coatings provide excellent adhesion and durability. They are highly resistant to abrasions, stains, and various substances stored in tanks, including oils, gasoline, acids, and other chemicals.
As for the downsides, water-based epoxies typically require more coats to achieve an equivalent dry film thickness as solvent-based coatings. They have smaller application windows, slower cure times, and less tolerance for surface moisture during application.
Solids epoxy coatings provide superior protection for storage tanks. They contain zero VOCs or solvents, resulting in a highly durable, chemical-resistant finish.
Will it meet your requirements?
100% solids epoxy coatings have a high volume of epoxy resins and hardeners, guaranteeing a tough coating. Plus, without solvents, there is no evaporation. This eliminates the risk of coating thickness reduction.
These coatings meet NSF 600 regulations for potable water tank linings, meaning they are ideal for tanks storing consumables (e.g., drinking water and food). The dense, cross-linked structure of 100% solids epoxy coatings blocks the ingress of moisture and chemicals, preventing contamination.
Now, you might be wondering, are there any disadvantages? In truth, the one minor &#;con&#; is that 100% solids are more difficult to apply than solvent-based and water-based alternatives. They have a short pot life of only 30 minutes, so they must be applied promptly after mixing the resin and hardener. The coating&#;s high viscosity also requires more advanced spray equipment for precise application.
Are you still undecided? Let the Industrial Inspection Group help you make the right choice. To identify the appropriate epoxy for your coatings project, our meticulous process involves an on-site assessment of your tanks and a comprehensive analysis of their intended uses. Get in touch with us today to request a quote. With the right epoxy and independent coating inspectors by your side, your tanks will remain in service for decades to come.
Epoxy coated tanks are increasingly popular for industrial storage due to their exceptional durability, corrosion resistance, and versatility. Whether in water treatment, oil & gas, or chemical industries, epoxy coated tanks offer reliable and long-lasting storage solutions. This article explores the benefits of epoxy coated tanks and why they are a preferred choice for various industrial applications.
What is an Epoxy Coated Tank?
An epoxy coated tank is a steel or concrete storage tank lined with a specialized epoxy coating. This coating provides a robust, non-porous barrier that protects the tank&#;s interior and exterior from corrosion and chemical damage. Epoxy coatings are applied in layers and cured to create a seamless finish, ensuring protection even under harsh environmental conditions.
Key Benefits of Epoxy Coated Tanks
1. Superior Corrosion Resistance
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One of the main advantages of epoxy coated tanks is their high resistance to corrosion. The epoxy layer prevents water, chemicals, and other corrosive substances from reaching the tank&#;s surface, which is essential for storage tanks in water treatment, wastewater, and chemical processing industries. This resistance significantly extends the lifespan of the tank and reduces maintenance costs.
2. Chemical Resistance
Epoxy coatings are specifically formulated to withstand exposure to various chemicals, including acids, alkalis, and solvents. This makes epoxy coated tanks suitable for industries that store aggressive chemicals, as the coating protects both the stored materials and the tank structure.
3. Durability and Longevity
Epoxy coated tanks are known for their strength and durability, with the coating providing a hard, impact-resistant layer. This durability helps protect the tank from physical damage, whether from accidental impacts or routine operations. With proper maintenance, epoxy coated tanks can last for decades, providing a long-term solution for industrial storage.
4. Easy Maintenance
Epoxy coatings create a smooth, non-porous surface that is easy to clean and maintain. This is particularly advantageous for applications like potable water storage or food processing, where hygiene standards are high. Regular maintenance of epoxy coated tanks is minimal, reducing the need for costly repairs or downtime.
5. Environmental Friendliness
Epoxy coatings are an eco-friendly choice, as they prolong the tank&#;s service life, reducing the need for replacements and conserving materials. Additionally, epoxy coatings can be applied without harmful solvents, minimizing environmental impact. Many epoxy coatings are also low in VOCs (volatile organic compounds), supporting sustainable industrial practices.
Applications of Epoxy Coated Tanks
Water and Wastewater TreatmentEpoxy coated tanks are widely used in water and wastewater facilities for their ability to resist corrosion and maintain water quality. They are ideal for municipal and industrial water storage, ensuring clean, safe storage in demanding environments.
Oil and Gas StorageIn the oil and gas industry, epoxy coatings help prevent chemical reactions between the tank material and hydrocarbons, protecting the tank and reducing contamination risk.
Chemical ProcessingEpoxy coated tanks are essential for storing chemicals due to their resistance to chemical erosion. This ensures safe and compliant storage, especially for hazardous materials.
Why Choose Center Enamel for Epoxy Coated Tanks?
Center Enamel, with over 30 years of experience, is a trusted provider of epoxy coated tanks that meet the rigorous demands of industrial applications. Our tanks are engineered with precision and high-quality materials, offering reliable, cost-effective solutions for industries worldwide. Center Enamel&#;s epoxy coated tanks stand out for their durability, compliance with industry standards, and eco-friendly design.
Conclusion
Epoxy coated tanks offer a robust solution for industries requiring reliable, corrosion-resistant, and easy-to-maintain storage. With applications across water treatment, oil & gas, and chemical processing, these tanks provide long-lasting benefits that support safe, sustainable industrial operations. Center Enamel&#;s epoxy coated tanks deliver on quality and performance, making them an optimal choice for a wide range of storage needs.