Penguard Primer

Product description

Penguard Primer is a two-pack epoxy primer based on epoxy resin with high molecular weight. This product is a part of a complete system which is certified not to spread surface flames.

Recommended use

As a primer in a coating system for corrosion protection of steel and other substrates. Penguard Primer is also recommended for internal lining for friction reduction in gas transmitting pipelines as per API 5L2. Please contact Jotun for specific recommendations.

Film thickness and spreading rate

                                                                           Minimum               Maximum                  Typical

Film thickness, dry (µm)                                   40                            60                             50

Film thickness, wet (µm)                                  80                          120                           100

Theoretical spreading rate (m²/l)                  12,8                        8,5                             10,2

Approvals

API 5L2 by Egyptian National Research Centre NRC.

Physical properties

Colour Grey, Red

Solids (vol %)* 51 ± 2

Flash point 25ºC ± 2 (Setaflash)

VOC 420 gms/ltr UK-PG6/23(97). Appendix 3

Gloss Flat

Water resistance Very good

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 440 gms/ltr HK EPD method (Ready to use); Exempt compound - N/A; Specific gravity: 1.24 kg/ltr (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 Sa 2½ (ISO 8501-1:2007). Roughness: using abrasives suitable to achieve grade Fine to Medium G (30-85 µm, Ry5) (ISO 8503-2)

Shopprimed steel

Clean, dry and undamaged approved shopprimer.

Coated surfaces

Clean, dry and undamaged compatible primer. Please contact your local Jotun office for more information.

Other surfaces

For aluminium and galvanised surface; degreasing, light abrading or sweep blasting. For stainless steel; light abrading or sweep blasting using chloride free, non-metallic abrasive.

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 at least 3°C above the dew point of the air, temperature and relative humidity 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. If necessary, Penguard Stayer, Penguard Primer, Penguard HB, Penguard Special may be used down to 2ºC, provided a special accelerator is added.

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) 4:1

Mixing 4 parts Penguard Primer Comp. A (base) to be mixed thoroughly with 1 part Penguard, Comp. B (curing agent).

Induction time 30 minutes.

Pot life (23°C) 8 hours. (Reduced at higher temp.)

Thinner/Cleaner Jotun Thinner No. 17. Do not use thinner when applied in potable water tanks.

Guiding data airless spray

Pressure at nozzle 15 MPa (150 kp/cm², 2100 psi)

Nozzle tip 0.46 - 0.58 mm (0.018-0.023")

Spray angle 40 - 80°

Filter Check to ensure that filters are clean.

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

1. Provided the surface is free from chalking and other contamination prior to application, there is normally no overcoating time limit. Best intercoat adhesion occurs, however, when the subsequent coat is applied before preceding coat has cured. If the coating has been exposed to direct sunlight for some time, special attention must be paid to surface cleaning and mattening/removal of the surface layer in order to obtain good adhesion.

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.

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

20 litre unit: 16 litres Penguard Primer Comp. A (base) in a 20 litre container and 4 litres Penguard, Comp. B (curing agent) in a 5 litre container

5 litre unit: 4 litres Penguard Primer Comp. A (base) in a 5 litre container and 1 litre Penguard, Comp. B (curing agent) in a 1 litre container

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.