Epoxy zinc-rich primer

960PR Epoxy Zinc-Rich Primer

Product Introduction:

Epoxy zinc-rich primer is a two-component high-performance primer composed of epoxy resin, hardener, high-purity zinc powder, and other additives. Its core technology lies in utilizing the sacrificial cathodic protection principle of zinc powder. Simply put, when the coating is damaged and the underlying steel is exposed, the zinc powder will be corroded first, thus "sacrificing" itself to protect the steel body, much like a mobile battery providing continuous electrochemical protection for the steel.

characteristic:

1. Superior Cathodic Protection : This is the most unique advantage of epoxy zinc-rich primers. Even if the coating is damaged by scratches, the zinc powder can still prevent steel from rusting through electrochemical action, fundamentally solving the corrosion problem.

2. Excellent Adhesion : Thanks to the properties of epoxy resin, it can firmly adhere to the sandblasted steel surface, providing a solid foundation for subsequent coatings.

3. Outstanding abrasion and mechanical resistance : The coating is tough and durable, resisting external impacts and protecting the substrate from mechanical damage.

4. Excellent chemical resistance : It can effectively resist the erosion of various chemicals and is especially suitable for industrial environments.

use:

1. Petrochemical industry: Used in oil refineries and chemical plants for storage tanks, pipelines, equipment and steel structures to resist corrosion from chemical gases and liquids.

2. Bridges and large steel structures: especially bridges located in coastal or industrial areas, as well as steel structures of large buildings such as stadiums and convention centers.

3. Power plant and mining equipment: Protect steel equipment operating in harsh environments.

Product characteristics:

Viscosity: 115 ± 5 KU (25 ℃ )

Specific gravity (g/ml) : 1.985 ± 0.05 (g/ml)

Volumetric solids (%) : 54 ± 1% (approximately 80% high-purity zinc powder in dry film )

Color: Gray

Hardener ratio: A : B = 9 : 1 (by weight)

Thinner kit: DR-620
Thinner dosage : ( excluding tool cleaning )

Construction method	Airless spray	Air spray	Brush paint	Rolling
Amount added (%)	5-10%	5-10%	5-10%	5-10%

Application methods: airless spraying, air spraying, brushing, rolling.

Recommended number of coats: 1

Drying time :

Min ( minutes ) , H ( hours ) , D (days)	30°C
Touch time	1/12H
Hardening time	1H
Repaint interval ( lowest )	5H
Usable time	6H

Drying time will vary depending on the ambient temperature and humidity.

Theoretical coverage:

Typical: 7.2 m²/L/coat (dry film thickness: 75 μm ( per coat ) )

It is recommended that the coating thickness be at least three times the maximum roughness (Rz) to achieve a good protective effect.

Recommended construction procedures

Outdoor high corrosion resistance environment

Product Name	Recommended number of sprays	Recommended spraying and dry sanding thickness
960PR Epoxy Zinc-Rich Primer	1 time	75 μm
K9302 Epoxy Mica Mid-coat	1 time	100 μm
MA366 polyurethane acrylic topcoat	1-2 times	50-100 μm

Outdoor corrosion protection environment

Product Name	Recommended number of sprays	Recommended spraying and dry sanding thickness
960PR Epoxy Zinc-Rich Primer	1 time	75 μm
MA366 polyurethane acrylic topcoat	1-2 times	50-100 μm

Indoor anti-corrosion environment

Product Name	Recommended number of sprays	Recommended spraying and dry sanding thickness
960PR Epoxy Zinc-Rich Primer	1 time	75 μm
926 Solvent-Based Epoxy Topcoat	1-2 times	50-100 μm

Instructions for use:

Surface treatment requirements:

Use a solvent to remove visible grease, oil, lubricants, cutting fluid, and other soluble contaminants from the metal surface that may affect adhesion, or use other methods to prepare the surface condition for the coating application, following the SSPC-SP1 surface treatment standard to prepare for subsequent protective coating applications.

The steel structure surface must be sandblasted to Sa2.5 ( very thorough sandblasting ) or SSPC-SP10 grade. Without using a magnifying glass, at least 95% of the surface area should be free of any visible oil, grease, dust, dirt, scale, rust, coatings, oxides, corrosion products, and other foreign matter. The surface roughness should be in the range of Rz 30-75μm.

Power tool treatment must meet St 3. This standard defines the use of power tools ( such as power wire brushes, grinders, abrasive discs, etc. ) to remove loose rust, scale, old coatings, and other foreign matter from steel surfaces until the surface has a metallic sheen. However, minor scratches and discoloration are permissible. It is equivalent to SSPC-SP3 in the US SSPC standard .

Surface defect treatment: This includes weld slag, burrs, cracks, holes, etc. These defects affect the adhesion and protective effect of the coating and should be removed or repaired as much as possible.

After surface treatment, a thorough inspection should be conducted to ensure that there are no contaminants or defects such as oil, grease, dust, dirt, scale, rust, welding slag, or burrs before proceeding with the next step.

Under any atmospheric conditions, it is best to perform the painting work within 1 hour after the completion of the "surface treatment" procedure , and no later than 8 hours after the "surface treatment".

Different coatings have different requirements for surface cleanliness and roughness. Please discuss this in detail with our sales staff before using this product.

Construction environment requirements:

Coating application should be carried out under suitable environmental conditions to ensure the quality of the coating. The following factors should be considered:

Temperature: Please construct within the recommended temperature range. Generally, it is not advisable to construct in environments below 5 ℃ or above 40 ℃.

Humidity: The relative humidity should not exceed 85% . Avoid construction in humid or rainy weather.

Wind speed: Excessive wind speed will affect the spraying effect; avoid construction on windy days.

Surface temperature: The surface temperature of the steel should be at least 3 °C ​​higher than the dew point temperature to avoid condensation on the surface.

Storage:

Storage validity period: 2 years

This product must be stored in a cool, dry, and well-ventilated place, away from direct sunlight and fire.

Notes:

Please read the paint instructions carefully before application.

The paint should be thoroughly stirred after opening the can.

Strictly follow the dilution ratio specified in the instructions; do not dilute excessively.

Please mix the main agent and hardener thoroughly according to the proportions indicated in the instruction manual.

This product is flammable and should be kept away from heat sources and open flames.

The work area should be well-ventilated during construction, and workers should avoid contact with skin and eyes. Please refer to SDS for relevant information.

Unused main agent and hardener should be sealed separately and stored in a cool place.

Packaging specifications:

Supporting specifications:	16.0	L
Supporting specifications:	3.2	L

Safety Precautions:

1. Ensure good ventilation during application, and keep the paint away from direct sunlight and heat sources.
2. To avoid contact with skin and eyes or inhalation of excessive paint fumes, please use protective equipment such as a face mask and gloves.
3. If it gets into your eyes, rinse immediately with plenty of water and seek medical attention.
4. Keep out of reach of children.

Disclaimer:

The above information represents typical properties, characteristics, and applications of the product and is intended only as guidance from our company. It should not be considered a warranty, a statement requiring the company to assume legal liability, or a basis for presuming the company to be liable. Users are responsible for confirming the suitability of any batch of product for a specific application before using the information and content presented in this manual.