Epoxyden Wash Primer A+B

Epoxyden Wash-Primer

Non acid epoxy primer – superior adhesion

03 November 2010, contain 6 pages  ………………………………………………………………………………………………………………

Epoxyden-wash primer is two a component Epoxy paint suitable, as a primer, for nonferrous metals such as Aluminum, Zinc (including galvanized steel) and their alloys. It is based on special resins and pigments providing excellent adhesion to the metals. Epoxyden wash-primer creates a strong basis, which is the first condition, for stable top painting.

 

Properties

  • Excellent adhesion to: zinc (including galvanized steel), aluminum and their alloys without acids (which creates dangerous etching that if PH is not neutralize the remain acid prevents adhesion of top layer and/or burns the pigments of the top layer and shows stains like fade or make the paint peel)   .
  • A strong and durable primer for top paints.
  • It has excellent mechanical strength.
  • Resistant to scratches.
  • Resistant to diluted alkali or acids as well as to extreme humidity.
  • Durable for dry heat up to 200OC for short exposure time.
  • Suitable as primer paint for various top paints such as polyurethane, epoxy, chlorinated rubber, syntactic etc.
  • Easy to apply, dries quickly.
  • High coverage as a very thin layer needed.
  • Durable in fuels, oils, jet fuels etc.

Applications:

  • Primer paint for metals such Al, Zn (including galvanized steel) and their alloys
  • Primer paint for constructions made of galvanized steel, and elements from aluminum and galvanized steel in industrial uses.
  • Primer for aluminum and galvanized steel for aviation uses.

Technical data:

  • Theoretical coverage – 1 liter to 12-15 sqm.
  • Coverage according layer thickness – 10-15 sqm.
  • Recommended layer thickness – 10-35 microns dry, recommended 20 microns per layer. (minimum values)
  • Recommended number of layers –2
  • Mixing ratio A: B – 1 : 1 by volume.
  • Adhesion to Galvanized steel and Aluminum – 180 kg/cm2
  • Viscosity part A + part B immediately after mixing – 1-2 Pa.sec (Haake)
  • Flexibility – 1 mm (sheen)
  • Density –part A =1.1-1.2gm\cm3 (ASTM D1475)(DIN 53452)
  • Hardness – >3 Dg (Erichsen)
  • Flash point – 38OC
  • Stretch resistance – 400 kg/cm2.
  • Impact resistance -1.8 Dg/mm2
  • Pressing resistance – 600 kg/cm2
  • Bending resistance – 30 N/mm2
  • Pot life (working time from mixing a with b) – 8 hours in 20OC
  • Erosion-120 microns film – 2800 cycles (BYK Gardner) ASTM (loss of 66 mg ASTM 4060 for 120 mic. dry film with wheel cs-17 loaded 1 kg.)
  • Elasticity in drag – 10% N/ mm2 (DIN 53455)
  • Resistance to drag – 3 N/mm2 (DIN 53455)
  • Touch-drying time 4-6 hours.
  • Hard drying time – up to 24 hours.
  • Waiting time after mixture and before painting: 10 minutes. And stir again with a mechanical mixer before start painting.
Temperature Time
15°C 30 min.
20°C 15 min.
25°C 10 min.

 

  • Heat resistance – for 1 hr. in 121OC without changes of shade or quality of the film.
  • Hot oil durability – 121OC for 24 hours without any changes in the quality of the film and the shade.
  • Oil hydraulic resistance point- 65OC for 24 hours without any changes in the quality of film and it shade.
  • Solvents durability – 50 cycles rubbing with cloth soaked in MEK – no peeling of paint.
  • Distilled water resistance – 4 days in 49OC – no defects of film and adhesion.
  • Adhesion test – stick 3M standard tape to surface under pressure of 2 kg and after 1 hr. pull it off – no paint split off the surface.
  • Paint removing – 90% and more within 60 minutes in paint remover.
  • Salt spray resistance – 2000 hr.

Contains:

  • Epoxy resin and polyamide hardener. (tiny molecular size)
  • Fillers.
  • Adhesion promoters.
  • Wetting agents.
  • Zinc chromate.
  • Flexibility improovers.
  • Solvents and additives

Colors:

  • Clear yellowish.

 

Gloss:

  • Matt < 5%  (ASTM D 523) 60O lens test

Touch dry time:

  • : 4-6 hours.
  • Final: 24 hr.

Drying time between layers:

  • 16 hours. Dry too hard for painting on it: 48 hr. (un that case a sanding needed and a new layer of epoxydem wash primer). Final hardness: 7 days.
Temp. 5°C 10°C 15°C 20°C 30°C 40°C
First curing 16h. 8h. 5h. 4h. 3h. 2h.
Final curing None 15 days 10 days 7 days 3 days 2 days

Application methods:

  • Brush, roller, spray.

Thinning:

  • Thinner D-4/100. (MIL-T-81771 Type II)
  • Brushing – 5%
  • Spraying – 10-20% by volume –pressure 3-4 atm. nozzle 1.6
  • Airless – 0% ratio piston 30:1  inlet pressure 4-5 atm. nozzle 0.015-0.018” outlet pressure 120-150 atm.

Surface preparation:

  • A thorough cleaning needed from dirt, dust and loose paints.
  • Galvanized steel – sand lightly to remove light oxidation and/or gloss and clean with air pressure, clean with dry clean cloth soaked with thinner/acetone.
  • Very old galvanization with rust – sand blast for total removing of rust.

Primer:

  • This product itself.

Top color:

  • You can paint the top layer 8-12 hours after painting the primer if it had the heat and dryness condition.
  • During the cold winter, you can paint only after 24 hours.
  • The top layer can be “Denbergloss”  aliphatic exterior polyurethane paint with UV resistance.

Instructions for use:

  • Open carefully parts A and B and stir separately.
  • Pour from two parts in the right ratio the required amount and mix well with mechanical mixer (operated by air pressure is recommended for safety reasons) for a uniform mixture.
  • Wait for 15 minutes while adding the thinner as needed and mix again. Spray a thin layer of at least 20 microns thickness dry film. If necessary if the layer does not completely uniform or part of surface not painted, wait about 4-12 hours for complete drying and spray another layer. Insert into clean and controlled temp. drying room for 12 hours before painting the top layer.
  • Wash the equipment well immediately after finishing painting.

Pot Life after mixing the mixture a + b of 5 liters:

  • 15oc – 10 hr.
  • 20oc – 8 hr.
  • 25oc – 7 hr.
  • 30oc – 5 hr.
  • 35oc – 4 hr.

Ventilation:

  • Quantity air needed for  1 liter of  blend paint  :
  • Achieving 10% of the LEL = 65M3
  • To obtain the TLV = 990 M3
  • Quantity air needed for  1 liter of  thinner 4/100  :
  • Achieving 10% of the LEL = 182M3
  • To obtain the TLV = 2125 M3

Packaging:

  • 2.5+2.5 = 5 liters. 5+5=10 liters.

Storage:

  • In cool and shaded room in room temp. with proper ventilation.
  • Keep lids tightly closed.

Shelf life:

  • 12 months in original package.

Tools cleaning:

  • D- 4/100 thinner immediately after painting.

Quality control:

  • In factory laboratories according to specifications.
  • COA and COC certificate.
  • ISO 9001-2008

Safety precautions:

  • Inedible, keep away from the reach of children.
  • Flammable – keep distant from heated areas, fires, flames, and sparks, Prohibit smoking in working area.
  • While applying, good air ventilation is important. In case there is not enough air, use ventilation according to the ventilation table.
  • Wear protective glasses, gloves and suits.
  • Avoid direct contact of the paint and/or thinner with the eyes and skin. In case of contact, immediately wash thoroughly with water.
  • In case of an injury immediately get doctors assistance.
  • Read the safety instructions on the labels.
  • See M.S.D.S

Warnings:

  • Don’t mix the product with materials which were not recommended by us.
  • Don’t apply if the temperature is under +7°C .
  • Don’t apply if humidity is over 80%
  • When applying with Airless, do not aim it at anybody a direct hit could be fatal at pressures over 150 atm.
  • Read thoroughly the technical data of the product listed in this section; confirm that everything is understood completely, for clarification contacts our tech. department.
  • All information that is listed in this content is a recommendation merely and cannot be applied in the court of law.
  • The costumer must test & check that this product is compatible with his equipment and needs.
  • The information listed in this section is according to the laboratory conditions (temperature, humidity etc.) which the products were tested.
  • The recommendations listed do not hold any responsibility for this product.
  • Theoretical and actual coverage area are different concepts, the actual coverage is affected by the required thickness of the layers, required number of layers, painting conditions including the amount of paint which spread in the air before touching the surface.
  • The information listed in this section is based on experience and accumulating data, Denber inc., has the right to change the information listed at any time.
  • Paints that have been in stagnation or exposed to air more than needed could have their qualities changed.

Clarifications:

  • Storage room temperature 15°C to 25°C.
  • Over Spray: An effect which occurs in the spraying of paints application. A type of “dust” is created by dry gases of the air, which causing the paint particles to fall dry on the surface (hereafter the “effect”). The impact of this “effect” becomes stronger due to over pressure and heat, (most sprayers have a lever to control the   pressure) To avoid the negative impact 0f the “effect”, the pressure of the spraying should be lowered to the necessary minimum!. Another possibility is to increase the amount of the thinner in the mixture which would cause the paint particles to fall wetter on the surface.

An additional recommended possibility, to avoid this “effect”, is to add a retarder to the mixture which increases the duration period of the painting application , avoiding the paint to  dry up, and enabling it to reach the surface wetter, Thus a better painted smooth  layer is formed.

  • Pot Life : The working time which is possible to paint a mixture of two components, A+B (or more) without spoiling the qualities of the paint or disqualifying the paint as “out  of use”.
  • Spray: It is possible to spray with a sprayer that has a container holding the paint that sprays it with air pressure.
  • Airless: a device with a piston which compresses the air for spraying paints. The pressure might be high (over 100atm.) Don’t aim it at anyone
  • Surface preparations: the level of cleanness is determined by international standards. Surface preparations, including cleansing sand blasting, is important & critical factor in achieving an optimal result for painting adhesion on a certain surface. These standards are equally compared to the standards of the Swiss SA, the German-Din the U.S SSPC SP                   For each standard in any level there are indicators, for sale,  in order to make visual comparison between the cleansing of the surface and the indicator.

Quality inspection:

  • Prior to the painting on large surfaces it is important to test the product on a small area, to be sure that the paint is compatible with the level of satisfactory.
  • Laboratory testing was made according to the standards institution specifications.
  • This “Data sheet” given as noncommittal information, the product above recommended for professional painting specialists. This information is not a substitute to personal guidance.
  • You must read the MSDS safety instructions before you start working with the product.

Safety instructions and transportation risk levels:

* According to UVV 24 (VGB 32) standards.

 

  • It is recommended to cover containers and tubes which have flammable substances from ‘A’ group, level: 1, 2, 3, and from group ‘B’.

 

Hardener Thinner Base
Fuel transportation
V b F A 11
Vehicle transportations of dangerous substances
In GGVE\RID train 3N 31c
Secret material sea transportation CLASS 3.3 CLASS 3.3 CLASS 3.3
UN no 1866 UN no 1866 UN no 1866