Aquazinga

Aquazinga

TECHNICAL DATA SHEET

Aquazinga is a two pack 100% water-based anti-corrosion system based on inorganic zinc silicates.
Due to its high zinc content in the dry film (92%) it provides cathodic protection to ferrous metals.
It can be used as a stand alone system as an alternative to hot-dip galvanisation or metallisation. Aquazinga has an excellent resistance to abrasion and is designed to withstand corrosive environments and severe conditions, including high temperatures (up to 600°C).

PHYSICAL DATA AND TECHNICAL INFORMATION

WET PRODUCT

Components

– Water-based inorganic zinc silicate – Zinc powder

Density

3,36 kg/dm3 (±0,05 Kg/dm3)

Solid content

– 83% by weight (±1%)
– 63% by volume (±1%) according to ASTM D2697

Type of thinner

No thinner needed.

Flash point

N/A: water-based

Pot life

3 hours at 20°C, depending on ventilation and temperature.

VOC

0 g/L

DRY FILM

Colour

Grey

Gloss

Mat

Zinc content

92% (±2%) by weight, with a purity of 99,995%

Special characteristics

– Atmospheric temperature resistance of dry film » Minimum: -90°C
» Maximum: 550°C with peaks up to 600°C

– pH resistance in immersion (at least 12 days after polymerisation) » Lower limit: 5,5 pH
» Upper limit: 9,5 pH

– Excellent resistance to abrasion
– Excellent resistance to certain chemicals

PACKING

CONSERVATION

10 kg

Available in 7,6 Kg powder and 2,4 Kg binder

25 kg

Available in 19 Kg powder and 6 Kg binder

Shelf life

12 months in the original, unopened package.

Storage

Store in a dry environment at temperatures above 5°C.

 

Cleanliness

Before the application of Aquazinga the metal substrate should first be degreased, preferably by steam-cleaning at 140 bar at 90°C. After that it should be grit-blasted (clean grit) to cleanliness degree SA 2,5 to SA 3 (preferred) according to the standard ISO 8501-1:2007 or to the cleanliness degree described in the standards SSPC-SP10 to SP5 and NACE nr 2 to nr 1.

This means that the surface must be free from rust, grease, oil, paint, salt, dirt, mill scale and other contaminants.
Once the grit-blasting is completed the surface should be de-dusted with non contaminated compressed air according to the standard

ISO 8502-3 (class 2).
Another method to obtain a clean surface is UHP water-jetting to clean- liness degree WJ2 according to the standards NACE nr 5 and SSPC-SP12 level SC1. But keep in mind that this method does not create surface roughness.

Roughness

Aquazinga should be applied on a metal substrate that has a roughness grade of fine to medium G (Rz 40 to 70 μm) according to the standard
ISO 8503-2:2012.
This can be obtained by grit-blasting (with sharp particles) but not by shot-blasting (with spherical particles). Make sure that the surface is degreased before the gritblasting.

Maximum time to application

Apply the Aquazinga as soon as possible on the prepared metal substrate (max. 4 hours waiting time). If contamination occurs before coating, the surface must be cleaned again as described above.

ENVIRONMENTAL CONDITIONS DURING APPLICATION

Ambient temperature

– Minimum 5°C
– Maximum 30°C
– Do not apply Aquazinga in bright and hot sunshine

Relative humidity

– Minimum 40%
– Maximum 90%
– Do not apply on a damp or wet surface

Surface temperature

– Minimum 3°C above the dew point. – Minimum 5°C
– Maximum 25°C

APPLICATION INSTRUCTIONS

GENERAL

Application methods

Aquazinga can be applied on a clean surface by brush and roller (small touch up or stripe coats) or conventional spray-gun but not by airless spraying.

TECHNICAL DATA SHEET

Ref.: Technische Fiches\TDS Aquazinga.EN

www.zinga.eu

ZM-RE-PRO-04-B (02/09/14)

p. 3

23/06/15

Stripe coat

It is always recommended to treat corners, sharp edges, bolts and nuts before applying a uniform coat.

Mixing

Stir the binder in its original can and pour the zinc powder progressively into the binder while mixing until a homogeneous mixture is obtained.
It is recommended to filter the Aquazinga after mixing through a 150 μm (100 mesh) sieve.

Stirring

Aquazinga must be thoroughly mechanically stirred to achieve a homogene- ous liquid before application.
The liquid must be stirred continuously.

Cleaning

Immediately after using the spraying equipment, it must be rinsed with fresh water. Brushes and rollers should also be rinsed with water. Do not wait longer than 10 minutes before rinsing the spraying equipment if you have stopped spraying Aquazinga.

APPLICATION BY BRUSH AND ROLLER

APPLICATION BY CONVENTIONAL SPRAY-GUN

Dilution

Aquazinga is ready for use. Never dilute.

Type of brush or roller

Industrial round brush Short hair roller (mohair)

Dilution

Aquazinga is ready for use. Never dilute.

Pressure at gravity cup

2 to 4 bar

Pot pressure

0,8 to 1,5 bar

Nozzle opening

1,2 to 1,5 mm

Special demands for spraying equipment

– For the spraying of Aquazinga, it is better to remove all filters from the pistol to avoid blockage.
– The spray gun must be equipped with reinforced needle springs.
– Use short tubes.

– The needle and the spray tip must be made out of Tungsten carbide metal.

OTHER INFORMATION

COVERAGE AND CONSUMPTION

Theoretical coverage

– For 60 μm DFT: 3,25 m2/kg – For 80 μm DFT: 2,34 m2/kg

Theoretical consumption

– For 60 μm DFT: 0,32 kg/m2 – For 100 μm DFT: 0,43 kg/m2

Practical coverage and consumption

Depends upon the roughness profile of the substrate and the application method.

TECHNICAL DATA SHEET

Ref.: Technische Fiches\TDS Aquazinga.EN

www.zinga.eu

DRYING PROCESS AND OVERCOATING

For 80 μm DFT at 20°C (ambient temperature) in a well-ventilated environment:
– Touch dry: 30 minutes
– Dry to handle: 1,5 hours

– Fully cured: 48 hours

Drying process

The drying process is influenced by the total WFT, the ambient air (humidity and temperature) and the steel surface temperatures.
Aquazinga should not be dried outdoors, or it should be pro- tected from rainfall during drying process.

Drying time

Please contact the Zingametall representative for resistance to chemicals and/or water.
Forced air circulation is negative and substrate temperature shouldn’t be above 25°C. No oven drying.

For 80 μm DFT in function of different ambient temperatures:

Drying time before immersion is strongly dependant on relative hu- midity values. Avoid direct contact with water for at least a week. Please contact a Zingametall representative for immersion of Aquazinga.

For 80 μm DFT in function of different ambient temperatures:

Please contact the Zingametall representative for overcoating with a water based paint.
* After fully cured.

ZM-RE-PRO-04-B (02/09/14)

p. 4

23/06/15

Ambient temperature

Drying time before atmospheric exposure

Drying time before immersion

20°C

24 hours

7-14 days

25°C

14 hours

7-14 days

30°C

10 hours

7-14 days

35°C

8 hours

7-14 days

Overcoating
(with another paint)

Ambient temperature

Minimum drying time*

Maximum drying time

10°C

24 hours*

Limited; if overcoated after 48 hours after fully cured, Zinc Silicates might prevent good adhesion to subsequent topcoat.

20°C

16 hours*

30°C

8 hours*

40°C

4 hours*

TECHNICAL DATA SHEET

ZM-RE-PRO-04-B (02/09/14)

Ref.: Technische Fiches\TDS Aquazinga.EN p. 5 www.zinga.eu 23/06/15

RECOMMENDED SYSTEM

Unique system

– Aquazinga is used as a stand-alone system, applied in 1 layer between 80 and 90 μm DFT or 2 layers of 60 μm DFT.
– When applied in a DFT* higher than 120 μm the coating can start to crack. Excessive thickness should be avoided as it will reduce the effectiveness of the system.

* DFT: Dry Film Thickness; to be measured above the peaks of the roughness profile.

Duplex system

– In a duplex system, Aquazinga should also be applied in one layer of
50 to 80 μm DFT.
– The surface of the Aquazinga should be free from zinc salts and other contaminations prior to application of a topcoat.
– Aquazinga can be topcoated with a wide range of compatible sealers and topcoats.
To avoid pinholes when topcoated, use the mist coat/full coat technique. For application of water-based topcoats, contact Zingametall representative.

For more specific and detailed recommendations concerning the application of Aquazinga, please contact the Zingametall representative. For detailed information about the health and safety hazards and precautions for use, refer to the Aquazinga safety data sheet.

The information on this sheet is merely indicative and is given to the best of our knowledge based on practical experience and testing. The conditions or methods of handling, storage, use or disposal of the product cannot be controlled by us and are therefore outside our responsibility. For these and other reasons we retain no liability in case of loss, damage or costs that are caused by or that are linked in any way to the handling, storage, use or disposal of the product. Any claim concerning deficiencies must be made within 15 days upon reception of the goods quoting the relevant batch number. We retain the right to change the formula if properties of the raw material are changed. This data sheet replaces all former specimens.