Muki PVB 2-Pack

Product description

Muki PVB 2-Pack is a vinyl phenolic resin modified quick drying primer with a very low content of free phenol.

Recommended use

To be used as a preconstruction primer on blast cleaned steel surfaces in automatic shoppriming plants to protect steel during transport, storage and production.

Film thickness and spreading rate

                                                                   Minimum                   Maximum

Film thickness, dry (µm)                           20                                30

Film thickness, wet (µm)                         155                              230

Theoretical spreading rate (m²/l)           6,5                               4,3

Comments

Dry film thickness measured on a smooth test panel.

Physical properties

Colour Grey, Red

Solids (vol %)* 13 ± 2

Flash point -5ºC ± 2 (Setaflash)

VOC 710 gms/ltr UK-PG6/23(97). Appendix 3

Gloss Flat

Water resistance Very good

Abrasion resistance Good

Solvent resistance Limited

Flexibility Good

*Measured according to ISO 3233:1998 (E)

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 S/G (30-85 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 at least 3°C above the dew point of the air, temperature and relative humidity measured in the vicinity of the substrate. Relative humidity in the air should not exceed 85% prior to application. Recommended steel temperature: 30-40°C.

Application methods

Spray Use airless spray or conventional spray

Brush Recommended for touch-up purposes.

Application data

Mixing ratio (volume) 19.5 parts Comp. A (base) to be mixed thoroughly with 0,5 parts Comp. B (curingagent).

Pot life (23°C) 2-3 weeks

Thinner/Cleaner Jotun Thinner No. 4/11

(No. 4 - Fast evaporation) - (No. 11 - Slow evaporation)

Guiding data airless spray

Pressure at nozzle 5-8 MPa (50-80 kp/cm² 700-1120 psi).

Nozzle tip 0.38-0.58 mm (0.015-0.023).

Spray angle 40-95º

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

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

Muki PVB 2-Pack 1 x 20-30µm (Dry Film Thickness measured on a smooth test panel.)

Normally overcoated with a choice of systems based on alkyds chlorinated polymers, vinyl or epoxy resins.

Other systems may be specified, depending on area of use

Storage

The product must be stored below 25°C and 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: 19.5 litres Comp. A. (base) in a 20 litre container and 0.5 litre Comp. B (curing agent) in a 1 litre container. or

200 litre unit: 195 litres Comp. A. (base) in a 200 litre drum and 5 litres Comp. B. (curing agent) in a 5 litre container. or

1000 litre unit: 975 litres Comp. A. (base) in a 1000 litre container and 25 litres Comp. B. (curing agent) in a 25 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.