Epoxy zinc-rich primer
Product attachments:
I. Product Introduction
Epoxy zinc-rich primer is a special coating, mainly composed of epoxy resin, zinc powder, anti-rust pigments, fillers, additives, solvents, etc. This primer has many excellent characteristics, such as fast natural drying, strong adhesion, strong corrosion resistance, and hard coating. In addition, it also has cathodic protection, strong rust resistance, excellent flexibility and weather resistance, and is mainly used for corrosion-resistant coating. Epoxy zinc-rich primer is usually used as a primer for anti-corrosion paint.
II. Product Features:
High Zinc Content: The high content of zinc powder in the epoxy zinc-rich primer gives it excellent rust and corrosion resistance. Zinc powder can play a role in cathodic protection in the paint film, effectively preventing corrosion of the metal substrate.
Quick Drying: This primer has the characteristic of quick drying, which allows it to quickly form a protective film after application, improving construction efficiency.
Strong Adhesion: Epoxy zinc-rich primer has good adhesion to metal substrates, can firmly adhere to the substrate surface, and is not easy to fall off.
Excellent Water Resistance: This primer has good water resistance and can maintain stable performance in humid or underwater environments.
Cathodic Protection: The zinc powder in the epoxy zinc-rich primer will be preferentially corroded during the corrosion process, thereby protecting the metal substrate from corrosion. This is the embodiment of its cathodic protection effect.
Good Flexibility and Weather Resistance: This primer has excellent flexibility and weather resistance, and can maintain stable performance under different climatic conditions.
In general, epoxy zinc-rich primer has excellent rust resistance, corrosion resistance, fast drying, strong adhesion and other characteristics. It is suitable for various occasions requiring strong anti-corrosion protection, especially in harsh corrosive environments. It can comprehensively improve the anti-corrosion performance and service life of steel structure substrates.
III. Scope of Application
In terms of application, epoxy zinc-rich primer is widely used in steel structures, iron towers, oil pipelines, petrochemical equipment, various storage tank outer walls, heavy steel structures, port machinery, railway and highway transportation vehicles, bridges, ships, metallurgy and other industries' steel structures, equipment surfaces, etc., and can be used as a base anti-corrosion primer. At the same time, it can also be used as a maintenance primer and as an anti-corrosion primer for galvanized sheet surfaces. It is also widely used in heavy anti-corrosion fields such as ships, bridges, sand-turned castings, pipelines and steel facilities.
IV. Technical Indicators:
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Inspection Result |
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Item |
Technical Indicators |
Inspection Result |
Measured |
Determination Method (National Standard) |
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Product Color |
Meets Sample |
Standard Compliant |
Gray |
Visual Inspection |
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Paint Film Appearance (Visual) |
Smooth and free of impurities |
Standard Compliant |
Smooth |
CB1721-79 |
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Gloss |
Matte |
Compliant |
28° (60° angle) |
GB1743-79 |
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Solid Content: % |
70 |
Standard Compliant |
75 |
GB/T1725-2007 |
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Zinc Content: % |
50 |
Standard Compliant |
50 |
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Fineness μm |
≤30 |
Standard Compliant |
25 |
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Hardness: h |
≥2 |
Standard Compliant |
2 |
GB/T6739-2006 |
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Drying Time |
Surface Dry (min) |
≤20 |
Standard Compliant |
1 |
GB/T1728-1989 |
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Hard Dry (h) |
≤24 |
Standard Compliant |
24 |
GB/T1728-1989 |
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Flexibility (mm) |
2 |
Standard Compliant |
2 |
GB/T1731-1993 |
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Impact Strength (cm) |
50 |
Standard Compliant |
50 |
GB/T1732-93 |
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Adhesion: (Grade) |
1 |
Standard Compliant |
1 |
GB1720-79 |
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Salt Spray Resistance: h |
≥500 hours |
Standard Compliant |
No blistering, no rust, no peeling |
GB/T1771-2007
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V. Basic Parameters:
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Item |
Index |
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Curing Time |
Under the condition of 20℃, the curing time is 30 minutes. |
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Application Period |
The prepared paint should be used up within 6 hours. |
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Recommended Number of Coats |
One coat of airless spraying, 1-2 coats by brushing or rolling. |
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Primer for Previous Coat |
It can be directly applied to the steel surface with a rust removal quality of Sa2.5. |
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Primer for Subsequent Coat |
Including epoxy topcoat, chlorinated rubber topcoat, micaceous iron oxide epoxy intermediate paint, fluorocarbon topcoat, acrylic topcoat, etc. |
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Activation Period |
The activation period of the paint is 8 hours. It is recommended to use the paint on the same day it is prepared. |
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Dosage Reference |
The dosage of primer is about 5-6 square meters/kg; the dosage of topcoat is 6-7 square meters/kg. |
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Ratio |
【9kg (Oil): 1kg (Solid): 3kg (Thinner)】Weight Ratio |
6. Construction Process and Steps:
Coating method:
Epoxy zinc-rich primer can be applied by brushing, rolling, or spraying. The specific method should be selected based on the actual situation and construction conditions.
Operating steps:
Stirring: Stir the epoxy zinc-rich primer thoroughly to ensure that all components are fully mixed.
Dilution: If necessary, add an appropriate amount of thinner to dilute to obtain a suitable coating viscosity.
Coating: Apply the coating according to the selected coating method, ensuring that the coating is uniform and without omissions.
Drying: Allow the coating to dry naturally or bake dry according to the product instructions.
Dilution and mixing ratio:
When using epoxy zinc-rich primer, pay attention to controlling the amount of thinner and curing agent added. Generally speaking, the amount of thinner added should be adjusted according to the construction environment and coating method to ensure the smoothness and uniformity of the coating. The amount of curing agent added should be strictly in accordance with the product instructions to ensure the quality and performance of the coating.
Construction precautions and safety measures:
Construction personnel should wear protective equipment, such as protective glasses, gloves, and masks.
Smoking and fire are strictly prohibited at the construction site to avoid fire or explosion.
Avoid construction in humid or low-temperature environments to avoid affecting the curing and performance of the coating.
Avoid prolonged interruptions during the coating process to avoid affecting the continuity and quality of the coating.
Clean the coating tools in time after coating to avoid residue affecting the next use.
Maintenance:
After the coating is dry, it should be regularly maintained to extend its service life. Regularly check the coating condition, and if there is any damage or aging, repair or replace it in time. During the maintenance process, avoid scratching the coating with sharp objects and avoid contact with corrosive substances such as strong acids and alkalis.
Quality inspection standards and methods:
After the coating is completed, the quality of the coating should be inspected. The main inspection items include: coating appearance, drying time, adhesion, hardness, etc. The specific inspection methods and standards can be referred to the product instructions or relevant industry specifications. If there are any unqualified items, they should be rectified or reworked in time.
7. Storage and safety protection:
The product should be stored in a cool and ventilated place, protected from direct sunlight, and isolated from fire and heat.
Keep the construction process dry and clean, and strictly prohibit contact with water, acid, alcohol, alkali, etc.; the curing agent packaging barrel must be tightly closed after the paint is mixed to avoid gelling.
Operators should wear safety protective masks and gloves to avoid contact with skin or eyes. If contact occurs, rinse with water.
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