1. Technical indicators

**Drying time (25℃)** | Surface drying ≤ 1 hour, actual drying ≤ 24 hours | Environmental humidity and temperature will affect the drying speed | |

 **Adhesion (crosshatch method)**| ≤Level 1 (according to GB/T 9286 standard) | Ensure strong bonding between coating and substrate | |

 **Salt spray resistance** | ≥500 hours (no rust, no blistering) | Suitable for anti-corrosion of metal substrates | |

**Water resistance (soaking)** | ≥168 hours (no blistering, no shedding) | Suitable for humid environments | |

**Environmental protection** | VOC content ≤50g/L (in line with national standard GB/T 23986-2009) | Low VOC, meeting environmental protection requirements |

2. Construction precautions** ####

**1. Substrate treatment** - **Cleaning**: The surface of the substrate must be free of oil, dust, rust, loose objects, etc. The metal surface needs to be sandblasted or polished to Sa2.5 level; the concrete surface needs to be dry (moisture content ≤10%) and free of floating ash. 

2.- **Flatness**: Uneven substrates need to be filled or polished to avoid affecting the uniformity of the coating. ####

3. Construction environment** - **Temperature and Humidity**: The optimal construction temperature is 5~35℃, and the relative humidity is ≤85%. Avoid construction in rainy days, low temperature (<5℃) or high temperature (>40℃). -

4. **Ventilation**: Maintain good ventilation to speed up drying and reduce the accumulation of harmful gases. #### **

5. Coating preparation** - **Mixing ratio**: Strictly follow the product instructions to mix the main agent and curing agent in proportion (such as 1:1 or 2:1), and the stirring time is ≥ 3 minutes. -

6. **Maturation time**: After mixing, let it sit for 5 to 10 minutes (refer to the product description for details) before use to ensure sufficient reaction. -

7. **Dilution**: If dilution is needed, use deionized water or purified water, and the amount added is ≤5% (excessive dilution will affect performance). #### *

8. - **Coating amount**: It is generally recommended that the dry film thickness is 50~80μm, and the theoretical dosage is 0.12~0.15kg/m² (adjusted according to the roughness of the substrate). -

9. **Recoating interval**: Apply the next coat after it is completely dry (about 24 hours). Do not overcoat until it is completely dry.

1. What is Water-based Epoxy Topcoat?

A water-based epoxy topcoat is a high-performance coating designed to provide a durable, protective finish for various surfaces, including concrete, metal, wood, and masonry. Unlike traditional solvent-based coatings, water-based epoxy topcoats use water as the primary solvent, which reduces volatile organic compound (VOC) emissions, making them a more environmentally friendly and safer alternative. These topcoats are formulated with epoxy resins, which are known for their exceptional durability, corrosion resistance, and chemical resistance, making them ideal for both industrial and commercial applications.

Water-based epoxy topcoats offer a smooth, high-gloss finish that enhances the aesthetic appeal of surfaces while providing long-lasting protection. They are commonly used in areas that require high-performance coatings, such as warehouses, factories, garages, laboratories, and other industrial or commercial environments. The versatility of water-based epoxy topcoats makes them suitable for both new construction and refurbishment projects.

2. Key Features of Water-based Epoxy Topcoat

Water-based epoxy topcoats provide a range of features that set them apart from other types of coatings. These features make them ideal for a variety of applications and offer significant benefits in terms of performance, durability, and sustainability.

2.1 Environmentally Friendly

One of the primary advantages of water-based epoxy topcoats is their environmentally friendly nature. Traditional solvent-based coatings contain high levels of VOCs, which contribute to air pollution and pose health risks to workers and occupants. In contrast, water-based epoxy topcoats have significantly lower VOC content, making them a safer and greener alternative. These topcoats emit fewer toxic fumes during application and curing, contributing to improved air quality and creating a healthier work environment.

2.2 Exceptional Durability

Water-based epoxy topcoats offer exceptional durability, making them highly resistant to wear, abrasion, and impact. This makes them ideal for areas subject to heavy traffic or frequent use, such as industrial floors, commercial kitchens, and garages. The strong, resilient finish protects surfaces from scratches, scuffs, and stains, ensuring that the coating maintains its appearance and functionality over time.

2.3 Chemical and Corrosion Resistance

One of the standout features of water-based epoxy topcoats is their superior resistance to chemicals and corrosion. Epoxy resins are known for their ability to withstand exposure to harsh chemicals, acids, oils, and solvents, making them ideal for use in environments where such substances are commonly present. For example, water-based epoxy topcoats are frequently used in factories, laboratories, and warehouses, where equipment and floors are often exposed to aggressive chemicals.

These topcoats also provide excellent protection against rust and corrosion on metal surfaces. When applied to steel, aluminum, or other metals, the epoxy coating forms a protective barrier that prevents moisture and oxygen from reaching the metal surface, reducing the risk of corrosion and extending the life of the substrate.

2.4 Quick Drying and Low Odor

Compared to solvent-based coatings, water-based epoxy topcoats dry much faster, which reduces the overall project timeline and allows for quicker re-coating and use of the surface. This makes them an ideal choice for projects that require minimal downtime. Additionally, water-based formulations produce low to no odor, making them more pleasant to work with and suitable for indoor applications, such as schools, hospitals, or office buildings.

2.5 Excellent Adhesion

Water-based epoxy topcoats provide excellent adhesion to a variety of surfaces, including concrete, metal, wood, and previously painted substrates. The strong bonding properties of epoxy resins ensure that the topcoat stays intact and provides long-term protection, even in harsh conditions. The improved adhesion also reduces the likelihood of peeling, cracking, or blistering, which can occur with low-quality coatings.

2.6 UV Stability and Color Retention

Water-based epoxy topcoats offer good resistance to UV rays, which helps maintain their color and finish over time. This makes them suitable for both indoor and outdoor applications, where exposure to sunlight can cause other coatings to fade or discolor. Water-based epoxy topcoats retain their vibrancy and gloss, ensuring that surfaces continue to look fresh and appealing for an extended period.

3. Applications of Water-based Epoxy Topcoat

Water-based epoxy topcoats are used in a wide range of applications across different industries. Their versatility, durability, and environmental benefits make them suitable for both residential and commercial settings. Some of the most common applications include:

3.1 Industrial Flooring

Water-based epoxy topcoats are frequently used for coating industrial floors in factories, warehouses, and production facilities. These floors are exposed to heavy foot traffic, machinery, and equipment, making them prone to wear and tear. A water-based epoxy topcoat provides a tough, durable finish that resists abrasion and stains, helping to maintain a clean, safe, and attractive working environment. The chemical resistance of the topcoat also ensures that the floor remains protected from spills and other chemical exposures commonly found in industrial settings.

3.2 Commercial Kitchens and Food Processing Areas

Water-based epoxy topcoats are ideal for use in commercial kitchens, food processing plants, and other environments where hygiene is a priority. These areas are often subjected to high temperatures, spills, and exposure to oils and acids. The smooth, non-porous surface created by a water-based epoxy topcoat prevents the absorption of contaminants, making it easier to clean and maintain a hygienic environment. The chemical and heat resistance of the topcoat also helps protect surfaces from damage caused by cooking oils, grease, and other substances.

3.3 Metal Surfaces and Equipment

Water-based epoxy topcoats are commonly applied to metal surfaces and equipment to provide corrosion protection and enhance the durability of metal structures. Metal surfaces exposed to moisture, humidity, and chemicals are particularly vulnerable to rust and degradation. A water-based epoxy topcoat forms a protective barrier that prevents moisture and contaminants from reaching the metal, reducing the risk of corrosion and extending the life of the equipment. These coatings are often used on machinery, pipes, tanks, and structural components in industries such as manufacturing, automotive, and marine.

3.4 Concrete and Masonry Surfaces

Concrete surfaces, such as floors, walls, and countertops, benefit greatly from the application of water-based epoxy topcoats. Concrete is a porous material, which means it is susceptible to moisture absorption, staining, and deterioration. A water-based epoxy topcoat seals the surface, providing a protective layer that resists moisture, chemicals, and physical damage. These coatings also improve the appearance of concrete surfaces, giving them a smooth, glossy finish that enhances the overall aesthetic of the space.

3.5 Residential and Commercial Spaces

Water-based epoxy topcoats are increasingly used in residential and commercial spaces for both functional and decorative purposes. They can be applied to floors, countertops, walls, and even furniture to provide a high-gloss, durable finish that withstands daily wear and tear. In residential settings, water-based epoxy topcoats are commonly used in garages, basements, and kitchens, while in commercial settings, they are used in retail stores, offices, and hospitals.

4. Application Process of Water-based Epoxy Topcoat

The application process for water-based epoxy topcoats is relatively straightforward but requires proper surface preparation and attention to detail to achieve the best results. Below is an overview of the typical application process:

4.1 Surface Preparation

Surface preparation is essential for ensuring proper adhesion of the topcoat. The surface should be clean, dry, and free from contaminants such as oil, grease, dust, or loose paint. Concrete surfaces may need to be cleaned and ground to ensure a smooth and even base for the topcoat. Metal surfaces should be sanded or abrasive blasted to remove rust and oxidation. Wood surfaces should be sanded to create a rough texture that allows the epoxy to bond properly.

4.2 Mixing the Coating

If required, mix the water-based epoxy topcoat with the corresponding hardener or activator according to the manufacturer’s instructions. Thoroughly mix the components to ensure a uniform consistency and optimal curing properties.

4.3 Applying the Coating

Water-based epoxy topcoats can be applied using brushes, rollers, or spray equipment. The application method will depend on the size and type of the surface being coated. Ensure that the topcoat is applied evenly, without excessive buildup or thinning. If applying multiple coats, allow the recommended drying time between applications to ensure proper curing.

4.4 Drying and Curing

Water-based epoxy topcoats generally dry faster than solvent-based alternatives. However, the curing time can vary depending on environmental factors such as temperature and humidity. Typically, the topcoat will be dry to the touch within a few hours, but full curing may take up to 24–48 hours. It is important to follow the manufacturer’s guidelines for drying and curing to achieve the best results.

4.5 Maintenance

Once the topcoat has fully cured, regular maintenance is required to keep the surface in good condition. Clean the coated surface regularly using appropriate cleaning agents to prevent dirt and grime buildup. If any areas of wear or damage occur, touch-up applications may be necessary to maintain the integrity of the coating.

5. Advantages and Disadvantages of Water-based Epoxy Topcoat

5.1 Advantages

• Environmentally Friendly: Low in VOCs, making them safer for both the environment and the user.

• Durability: Provides long-lasting protection against wear, chemicals, and corrosion.

• Fast Drying: Reduces downtime and allows for quicker project completion.

• Low Odor: Makes them suitable for use in indoor environments with limited ventilation.

• Excellent Adhesion: Ensures strong bonding