Tankguard SF

Product description

A solvent-free, novolac phenolic epoxy tank coating.

Recommended use

This product is designed to be used for corrosion protection for the internal lining of steel storage tanks e.g crude oil and Clean petroleum products. The product may also be suitable for grey water tanks. Please contact Jotun for specific recommendations.

Film thickness and spreading rate

                                                                           Minimum                          Maximum                              Typical

Film thickness, dry (µm)                                 150                                    500                                        200

Film thickness, wet (µm)                                150                                    500                                        200

Theoretical spreading rate (m²/l)                   6,7                                      2                                             5

Approvals

Jet A1 approval

Aviation Fuel certificate according to DEF STAN 80-97 Annex G

Physical properties

Colour Buff, Light grey, Light Red

Solids (vol %)* 100 ± -2

Flash point >100ºC (Setaflash)

VOC 0,83 lbs/gal (90 gms/ltr) USA-EPA Method 24

30 gms/ltr UK-PG6/23(97). Appendix 3

Gloss Glossy

Water resistance  Excellent

Abrasion resistance Very good

Solvent resistance Excellent

Chemical resistance Excellent

Flexibility Good

*Measured according to ISO 3233:1998 (E)

Hong Kong rules:

Category of paints - Tank lining coatings; VOC 90 gms/ltr HK EPD method (Ready to use); Exempt compound - N/A; Specific gravity: 1.63 (A+B); Both VOC and Specific gravity values provided are typical values, subject to changes when different colour involved.

Surface preparation

All surfaces should be clean, dry and free from contamination. The surface should be assessed and treated in accordance with ISO 8504.

Bare steel

Cleanliness: Blast cleaning to min. Sa 2 ½ (ISO 8501 1:2007). Roughness: using abrasives suitable to achieve Grade Medium G (50 - 85 µm, Ry5) (ISO 8503-2).

Other surfaces

The coating may be used on other substrates. Please contact your local Jotun office for more information.

Condition during application

The temperature of the substrate should be minimum 10°C and minimum 3°C above the dew point of the air. Best intercoat adhesion is obtained by utilising the induction time indicated after mixing of the two components and with Relative Humidity below 60% during the application process. The temperature and the relative humidity should be measured in the vicinity of the substrate. Good ventilation is usually required in confined areas to ensure proper drying. The coating should not be exposed to oil, chemicals or mechanical stress until cured.

Application methods

Spray Use airless spray

Brush Recommended for stripe coating and small areas, care must be taken to achieve the specified dry film thickness.

Application data

Mixing ratio (volume) 2:1

Mixing 2 parts Comp. A (base) to be mixed thoroughly with 1 part Tankguard SF, Comp. B (curing agent).

Induction time 10 minutes.

Pot life (23°C) 1 hour (reduced at higher temperature).

Cleaner Use Jotun Thinner No. 17 for cleaning equipment after application.

Guiding data airless spray

Pressure at nozzle 25 - 35 MPa (3600 - 5000 p.s.i.)

Nozzle tip 0.46 mm - 0.66 mm (0.018” - 0.026”)

Spray angle 40° - 80°

Filter Min. 60 mesh recommended. Check to ensure that filters are clean.

Note * It is of vital importance that the nozzle and other parts of the spraying equipment are cleaned properly directly after the work is done due to the short pot life.

• The hoses should be of good quality and not longer than necessary.

• An extra whip 1 m prior to the spray gun may be used.

• Both components should have a temperature between 23 and 28 degrees C prior to application.

For stripe coating, however, a lower paint temperature may be favourable, in order to get a sufficient pot life.

Drying time

Drying times are generally related to air circulation, temperature, film thickness and number of coats, and will be affected correspondingly. The figures given in the table are typical with:

• Good ventilation (Outdoor exposure or free circulation of air)

• Typical film thickness

• One coat on top of inert substrate

The given data must be considered as guidelines only. The actual drying time/times before recoating may be shorter or longer, depending on film thickness, ventilation, humidity, underlying paint system, requirement for early handling and mechanical strength etc. A complete system can be described on a system sheet, where all parameters and special conditions could be included.

Typical paint system

Tankguard Holding Primer 1 x 40 µm can be used as a temporary protection before the full system is applied.

Other systems may be specified, depending on area of use

Storage

The product must be stored in accordance with national regulations. Storage conditions are to keep the containers in a dry, cool, well ventilated space and away from source of heat and ignition. Containers must be kept tightly closed.

Handling

Handle with care. Stir well before use.

Packing size

15 litre unit: 10 litres Comp. A (Base) in a 20 litre container and 5 litres Tankguard SF, Comp. B (curing agent) in a 5 litre container.

Packing may vary from country to country according to local requirements.

Health and safety

Please observe the precautionary notices displayed on the container. Use under well ventilated conditions. Do not breathe or inhale mist. Avoid skin contact. Spillage on the skin should immediately be removed with suitable cleanser, soap and water. Eyes should be well flushed with water and medical attention sought immediately.