Blastprime EZP 200 : Epoxy Zinc Phosphate Blast Primer  

 

Product Description :

 

Blastprime EZP 200 is a fast drying, abrasion resistant blast primer suitable for application in the workshop to fabricated steel units. It is designed for thin-film application to provide short-term (typically 6 months) protection to structural steel prior to or after fabrication. It may be cut and welded through.

 
Features and Benefits :
 

Can be applied via airless spray and conventional spray. Only small areas can be brushed.

Protects steel surfaces until further coats are applied.

Ideal for use where steel work is likely to be exposed for appreciable periods before being overcoated and is most suitable for on-site application.

Provides much higher degree of protection than conventional primers in severe corrosive conditions.

Has no deterious effect on normal cutting and welding operations. .

Does not emit toxic and noxius fumes during cure.

Has excellent physical properties and the cured coating is compatible with most coatings.

Offers excellent resistance to corrosion both as pre-construction primer and as top-coated primer in the coating system. 

Contains anticorrosive pigments and has excellent rust-inhibitive properties.

Durable and economical.
   
     
     
  Surface Preparation :  
     
 

Steel - The surface should be blast cleaned to SSPC-SP 10-63T or NACE No. 2 i.e. loose rust and scales, dirt, grease, oil, paint, wax, weak oxide films and other contaminants should be removed. Blast cleaning to SSPC-SP 5-63 or NACE No. 1 is recommended where heavy corrosive conditions exist. That means a surface with a grey metallic colour, slightly roughened to form a suitable anchor pattern for coatings. This surface is free of all oil, grease, dirt, mill scale, rust, corrosion products, oxides, paint and other foreign matter. Hand or mechanical cleaning is not much effective.

Priming:

It is recommended that priming should be carried out within 4 hours if inside a building, but if exposed to weather, the steel must be coated immediately after blasting. Should it become necessary to leave cleaned surfaces unpainted overnight, such surfaces must be re-cleaned before painting. Paint only on dry surfaces. Do not paint exterior surfaces in damp weather or when the temperature is less than 10° C. The dry film thickness (DFT) should not be less than the DFT specified. Should the required DFT is not achieved in one coat, additional coats shall be applied until the minimum requirements are met. When the additional coats are applied, the re-coat time must strictly be followed. It is recommended that one coat of Blastprime EZP 200 at 25 microns minimum DFT should be applied on shot blasted steel whereas one coat at 50 microns DFT is required for grit blasted steel for best protection. All subsequent welds, burnt and cut edges, must be cleaned and priming coat be renewed where steel is primed prior to fabrication. More coats can be applied as per requirements.

Overcoating:

In common with epoxy coatings generally, overcoating should be carried out within 24-48 hours or left for 7 days when the coating has cured completely. However, Blastprime EZP 200 can be overcoated with conventional paints after 12 hours and with two-component systems after 24 hours. Care must be taken while overcoating the primed surface. Oil, grease, dirt etc. should be removed by degreasing the surface with degreasing solvents like tri-chloroethylene or xylene and subsequently washed off with fresh water. The surface should be allowed to dry before painting.

 
     
     
 

TECHNICAL DATA

 
     
 

Name/Description

Blastprime EZP 200

Type

Two pack cold cured

Composition

Epoxy / Zinc Phosphate

Colour

Red Oxide

Finish

Smooth and Matt

Volume Solids (mixed)

27± 3%

Mixing Ratio

Base : Hardener

3 : 1 by volume

Pot Life @ 30° C

6 to 8 hours

Dry film thickness per coat

25 microns

Coverage-(theoretical-no loss)

10.8 m² /litre

Serviceability @ 30° C

Dry to touch

Hard Dry

Recoat

Full Cure

 

30 minutes

16 hours

24 hours

7 days

Induction (Sweat-in-time) @ 30° C

30 minutes

Dry heat resistance

120° C

Relative Humidity

90%

Application Temperature

-minimum

-maximum

 

10° C

35° C

Solvent/Thinner

Anusol - ETP Thinner

Flash Point

23° C

Packing

4 & 20 litres

Shelf Life

6 months

Precaution

Flammable. Keep away from heat and open flame. Maintain good ventilation and avoid breathing vapours.

 
     
 
Notes :-  
 
     
 
Brushes and spray equipments should be cleaned with Anusol - ETP Epoxy Thinner.
The contents should be stirred thoroughly prior to use.

After mixing Base and Hardener in recommended proportions, allow for 30 minutes induction period or sweat-in-time (maturing) before application.

When overcoating the weathered or aged Blastprime EZP 200, ensure that the coating is fully free from all contamination such as oil, dust, grease, stains etc.

This coating should always be thinned with Anusol - ETP Epoxy Thinner. The use of alternative thinners can severely inhibit the curing mechanism of the coating.

 
     
 

Disclaimer :-

 

Information provided herein is based upon tests believed to be reliable. It does not guarantee the results to be obtained. Nor does it make any express and implied warranty or merchantability, or fitness for a particular purpose concerning the effects or results of such case. It does not release you from the obligation to test the products supplied by us as to their suitability for the intended uses. The application, surface preparation and use of the products are beyond our control and, therefore, entirely your own responsibility.

 
     
 
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