koro guard

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Tech Data Sheet KOROGUARD, March 2010 Page 1 of 3

KOROGUARD

KOROGUARD is a specially developed epoxy based two component solvent free aminecured high performance anti-corrosive coating with excellent chemical, acid and alkaliresistance. The product is completely free from volatile ingredients and is suitable forvariety of substrates like Mild Steel, Alloy Steel, Cast Iron, concrete etc. The specialtycoating system when applied by brush or spray over the duly prepared metal/ concretesurface provides a long lasting anti-corrosive layer thus protecting same from corrosionand chemical attacks.

Advantages

Withstands temperature up to 107OC

Non shrinking

Chemical resistant

100% solid epoxy system, complete absence of volatile ingredients Higher dry film thickness of approximately 150-200 microns

Cost effective due to longer service life

Recommended Applications

Coating of tanks of Demineralised water, Molasses, Neutralization pits etc.

Coating of gates submerged in water

Coating of salt spray tanks

Coating of internal pipeline caring raw water

Typical Properties

Sr

NoTypical Properties

Testing

StandardsTypical values

1 Color White / Grey / Yellow

2Practical coverage @ 180-200microns

On concrete 2m2 / ltr

On metal 2.0-2.5 m2/ltr

3 Max. operating temperature (C) 107

4 Compressive strength (kg/ cm2) ASTM 695 900

5 Tensile strength (kg/ cm2) ASTM D 638 251

6 Salt spray test (hours) ASTM B 117 >10000

7 Pull off adhesion (kg/ cm2) ASTM D 4541 215

8Abrasion Resistance(mg/1000 cycles)

ASTM D 4060 7.1

9 Flexural strength ASTM D 790 720

10 Water permeability ASTM E 398 1.03 mg/m2/hr

11 Specific gravity(gr/cc) 1.22


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12 Volume solids % ASTM D 2697 100

13Gel Time for 100 gms @ 30C

(minutes )

50-60

14Working time for 100 gms @ 30C(minutes )

40

15 Functional curing time @ 30CTouch dry 2 hrsFull cure 7 days

16 Hardness (shore D) ASTM D 2240 85

17

Chemical Resistance ( spillage/

splash )R: recommendedE: excellent

ASTM D 6943.

Hydrochloric Acid 10% ESulphuric Acid 10% E

Lactic Acid 10% R

Phosphoric Acid 10% ECaustic Soda 48% E

Ammonia Solution 10% RChlorine Solution E

Nitric acid 10% R

Turpentine E

Ethanol R

Acetic acid 30% R

Chromic acid 10% R

18Mixing ratioResin: Hardener: Diluents.*

By Vol By Wt4.5:2:1 100:30:15

Direction of Use

Surface PreparationProper surface preparation is important for the long term performance of the product.The product performance and service life depends upon proper surface preparation andstrict adherence to instructions pertaining to application.

Surface preparation should be done by grit blasting or by roughening of the surfaceusing portable grinder. It is recommended that the surface should be grit blasted to anear white metal standard.

Surface should be clean from oil/ grease/rust and moisture before application.

Preheat the substrate to warm touch for removal of moisture.

Mixing

Before mixing of Hardener to resin, stir the resin as well as hardener part

(separately). Subsequently mix resin and hardener and ensure the complete mixing. Be sure to

mix along the sides and bottom.

Diluents to be incorporated (only if needed) just prior to application

Let the mixed product stand for 3 - 5 minutes for de-aeration and maturation. In caseof ambient temperature less than 20 C, maturation time should be increased to 10-15 minutes.


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Application

Immediately after grit blasting, apply properly mixed material on the prepared surfaceby airless spray or roller or brush.

Contamination before application of subsequent coat should be avoided. Recoating interval will be as soon as gel has occurred and still tacky. It is generally

1-2 hours (touch dry) but will vary as per the climatic conditions. Once maximumrecoating time has been reached, adhesion values attained by any subsequent coatwill reduce dramatically and over coating should then be treated as a repair.

Technical Tips for Working with EpoxiesWorking time and cure time depends on temperature and mass:

Higher the temperature, faster the cure.

Larger the mass of material mixed, faster the cure.To speed the cure of epoxies at low temperatures:

Store epoxy at room temperature.

Slightly warm the surface under repairs until warm to the touch.To slow the cure of epoxies at high temperatures:

Mix epoxy in small masses to prevent rapid curing.

Cool resin/hardener component.

Shelf lifeOne year if stored under recommended conditions of storage

WarningMay cause burns to eyes and skin.May be harmful if swallowed.Do not take internally.In case of eye contacts, wash thoroughly with water and consult doctor.

DisclaimerThe information in this data sheet is given to the best of our knowledge based on laboratory testing and practical experience .However , product is often usedunder conditions beyond our control , we cannot guarantee anything but the quality of the product itself . We reserve the ri ght to change the given data withoutnotice.

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