Inorganic zinc-rich primer

965PR Inorganic Zinc-Rich Primer

Product Introduction:

This product is an ethyl silicate-based inorganic zinc-rich primer with a zinc solids content exceeding 85% . It employs a sacrificial rust-proof mechanism, utilizing cathodic protection to shield the carbon steel substrate. Furthermore, this product possesses a degree of self-repair capability; even minor damage can lead to the formation of new zinc corrosion products at the site of injury, achieving a protective effect.

characteristic:

1. Excellent anti-rust effect
2. The coating is dense and hard, exhibiting excellent wear resistance.
3. Excellent heat resistance, reaching 400 ℃
4. It is highly resistant to solvents and oils, and is resistant to corrosion from acids, alkalis, salts, and moisture.

use:

Widely used in coastal engineering, harbor engineering, bridges, storage tanks, chemical plants, dyeing and finishing plants and other fields requiring long-term corrosion protection.

Product characteristics:

Viscosity: 68 ± 5 KU (25 ℃ )

Specific gravity (g/ml) : 2.3 ± 0.05 (g/ml)

Volumetric solids (%) : 63 ± 1%

Color: Metallic zinc gray

Hardener ratio: A : B = 1 : 1.7 (by weight)

Thinner kit: DR-610
Thinner dosage : ( excluding tool cleaning )

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

Application methods: airless spraying, air spraying, brushing (brushing can only be used on welded areas or repaired areas, and cannot be repeated. If repeated brushing is required, epoxy zinc-rich primer 960PR should be used as a local substitute).

Recommended number of coats: 1

Drying time :

Min ( minutes ) , H ( hours ) , D (days)	30°C
Touch time	20min
Hardening time	1H
Recoat interval ( max )	18H
Usable time	5H

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

Theoretical coverage:

Typical: 8.4 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.

Suggested construction procedure:

Outdoor highly corrosive environment

Product Name	Recommended number of coats	Recommended dry film thickness
965PR Inorganic Zinc-Rich Primer	1 time	75 μm
MA366 polyurethane acrylic topcoat	2 times	100 μm

Highly corrosive indoor environment

Product Name	Recommended number of coats	Recommended dry film thickness
965P Inorganic Zinc-Rich Primer	1 time	75 μm
926 Epoxy Topcoat	2 times	100 μm

High-temperature and highly corrosive indoor environment

Product Name	Recommended number of coats	Recommended dry film thickness
965PR Inorganic Zinc-Rich Primer	1 time	75 μm
400 degree heat resistant silver paint N400-Silver	2 times	100 μm

Without topcoat, it has a galvanized effect.

Product Name	Recommended number of coats	Recommended dry film thickness
965PR Inorganic Zinc-Rich Primer	1 time	75 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: 1 month

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