Sigint Solutions
 

 

NSF34

nsf34 shielding paint 

Based on a high quality pure acrylic binder. Highly breathable, very low VOC content, free of solvents. For shielding of low-frequency electric fields (LF).









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Description

Areas of application
  • This paint is frost resistant for shipping in the winter or on pallets in shipping containers.
  •  Breathable, solvent free, low-emission, low odor.
  •  Application:Interior, exterior.
  •  Attenuation: 40 dB (99%)
  • In private areas for the shielding of low-frequency electric fields from power supply lines, fuse boxes.
  • In commerce, science, research and defence facilities: To shield technical equipment, installations and against electrostatic charging.
  • In medical facilities to prevent wrong measurements in patients (ECG/EEG). Further applications: Schools, nurseries, hotel rooms, hospital rooms, recording studios, etc.
  • Frost resistance
    This product is frost resistant (proved for 5 frost-/thaw cycles), shippable year-round by air cargo or by ship.
  • Screening attenuation
    The screening attenuation is regularly tested in our own EMC laboratory. We have measurement setups due to the following standards: ASTM D4935-10, IEEE Std 299-2006, IEEEE Std 1128-1998, ASTM A698/A698M-07. Please find the test report at our homepage directly on the product page.

Corrosion resistance
Without metal particles and therefore long-term durable and not oxidizing.

Attenuation
Attenuation depending on application in one layer is at least 40dB. The shielding attenuation is regularly tested by Professor Dipl.Ing. Pauli at the University of the German Federal Armed Forces in Munich. The expert reports are available upon request.



Technical Data

  • Attenuation depending on application:Single-layer at least 40dB.
  • Coverage: Indoor 7.5 m²/l; outdoor 5 m²/l.
  • Adhesive tensile strength: 4.1 N/mm².
  • Surface: Viscoplastic, suitable as final coat.
  • Sd-value: ~ 0.1 m = highly breathable.
  • VOC-content: < 0.5 g/l = very low-emission.
  • Density: 1.05 kg/l.
  • Viscosity: 500 mPas.
  • Non-volatile content (solids): 25 %.
  • pH-value: 7 - 8.
  • Packaging units: 1 / 5 liter.
  • Frost resistance in delivery form:3 frost/thaw cycles.
  • Shelf life: 1 year (see paint container).
  • Color: Black.



Material Handling

Top coating
Preferably covered with plastic bonded, water-based emulsion paints, dispersion silicate paints, facade paints or silicon resin paints. Not applicable are pure mineral paints (clay, loam, chalk, silicate). Please find appropriate product recommendations in the technical data sheet. Due to the high adhesive tensile strenght (to ETAG 004 for EIFS-systems, minimum 0.08 N/mm²), usable directly under pure organic plaster, no mineral pasters!

Ingredients
Pure acylic dispersion, graphite, water, carbon black, additives, preservative (MIT, BIT).

Optional: Fiber additive AF3
This paint is formulated without conductive carbon fibers to allow airless spraying. For crack bridging and consequential a better grounding we advise to mix in the fiber additive AF3.

Safety notes
This paint has a high coloring power, so please proceed with care. Wipe off stains immediately with damp cloth. Do not let stains dry up. Do not inhale spray mist! Use and let dry only in well ventilated areas! Do not eat, drink or smoke during painting! Rinse thoroughly immediately after skin or eye contact!

Grounding regulation
Only skilled electricians listed in the register of your electricity supplier are permitted to execute grounding measures! Pay attention to the following points: Protective measures against electric shock to DIN 57100/VDE 0100 part 410 + part 540, grounding to DIN/VDE 0100 part 410 + part 540, visual inspection and process testing to DIN/VDE 0100 part 610 part 4+5 and EMC to VDE 0100. Grounding measures are only permitted in TNS or TT networks! Grounding measures may never be executed in network forms with combined PEN wiring! A leakage/fault circuit breaker (FI/RCD) with less than 30 mA must be installed. Find more information on this in our grounding instructions sheet.

Grounding accessories
For grounding we only recommend our special grounding accessories: Grounding set ESW in combination with grounding strap EB2



Material Application

Area of application
Typical application use for interior and exte­rior walls and for ceilings. Floor space: Bulk laid floor coverings (carpets, laminat, etc.) can be laid directly onto the shielding paint. Pay attention, that the shielding paint is not damaged! In case of glued floor coverings (carpets, cork, laminate, etc.) the shielding paint has to be aftertreated with a solvent free priming coat to improve the adhe­sion. Because of the high adhesive tensile strenght of this shielding paint, the bonding of e.g. real-wood parquets is possible too.


Interior approach
  • Drill holes for ESW grounding plate
  • Ground-strap EB2 has to be applied uninterrupted in one piece through all painted surfaces, as stated in our grounding instructions sheet
  • Apply the shielding paint in one layer. Apply second coat of shielding paint to the area where the grounding plate ESW will be mounted
  • Allow the paint 24 hours to dry
  • Fix the ESW grounding plate
  • More procedures see Final coat

Exterior approach
  • Level out the mounting surface for grounding plate ESA.
  • Drill holes for the grounding plate ESA.
  • Apply the shielding paint in one or two layers, depending on the favored shielding effec-tiveness.
  • Apply second coat of shielding paint to the area where the grounding plate ESA will be mounted.
  • Allow the paint 24 hours to dry.
  • Fix the ESA grounding plate and glue the top cover.
  • More procedures see Final coat

Application temperature
Minimum application temperature: +5°C / 41°F. This temperature applies also for the drying time!

Underground
Excellent adhesion on various undergrounds like existing emulsion paints, sheetrock, wallpaper, cement, plaster, masonry, wood, etc. Always consider: The underground needs to be solid, clean, degreased and dry. Absorbent or porous surfaces must be prepared with a primer. Old coats of paint or old wallpapers which can be etched by water, should be removed.


Preparation
The conductive particles deposit on the bottom of the paint container after a prolonged storage. There-fore shake the paint container well or mix it thoroughly with an electrical paint stirrer.

Compatibility
The shielding paint is ready for use. Never mix with water or other coating materials!

Application
  • Use a first-class paint roller with a pile height of 10-13 mm.
  • Limited usable are lacquer-rollers, foam-rollers or brushes, the coating layer often gets too thin for a good attenuation!
  • To achieve a constant high attenuation, it is essential to apply the shielding paint with equal thickness; do not skip areas! Always soak the paint roller with the equal amount of paint and try to coat equal surfaces!
  • The pigmentation size is under 200 ¼m, spraying with airless equipment is possible with bigger nozzles.
  • Allow to dry for 24 hours.

Final coat
To protect the soft/viscoplastic surface of this shielding paint against mechanical damage and humidity, we recommend two top coats:
Interior: With high-quality, good covering, plastic bonded dispersion emulsion paints or dispersion silicate paints (e.g. KEIM Biosil, Ecosil, Optil). Natural resin paints are usable with some limitations. Alternatively paste over with wall­papers, glass fabrics, etc
Exterior: With high-quality , good covering, highly hydrophobic dispersion emulsion paints or silicon resin paints.
Under plaster: Due to an adhesive tensile strenght of 4.1 N/mm² in conformity with ETAG 004 for EIFS-systems (stipulates minimal 0.08 N/mm²), this shielding paint is also usable directly under pure plastic bonded plaster. Never use mineral plasters, no adhesion! Never use: Pure mineral bonded coatings with clay, loam, chalk or silicate adhere very bad on this shielding paint, they should never be used!

Area of application

Typical application use for interior and exte­rior walls and for ceilings. Floor space: Bulk laid floor coverings (carpets, laminat, etc.) can be laid directly onto the shielding paint. Pay attention, that the shielding paint is not damaged! In case of glued floor coverings (carpets, cork, laminate, etc.) the shielding paint has to be aftertreated with a solvent free priming coat to improve the adhe­sion. Because of the high adhesive tensile strenght of this shielding paint, the bonding of e.g. real-wood parquets is possible too.

 

Interior approach

 Drill holes for ESW grounding plate

Ground-strap EB2 has to be applied uninterrupted in one piece through all painted surfaces, as stated in our grounding instructions sheet

 Apply the shielding paint in one layer. Apply second coat of shielding paint to the area where the grounding plate ESW will be mounted

Allow the paint 24 hours to dry

Fix the ESW grounding plate

More procedures see „Final coat“.

 

Exterior approach

Level out the mounting surface for grounding plate ESA.

Drill holes for the grounding plate ESA. ● Apply the shielding paint in one or two layers, depending on the favored shielding effec-tiveness. Apply second coat of shielding paint to the area where the grounding plate ESA will be mounted.  Allow the paint 24 hours to dry.

Fix the ESA grounding plate and glue the top cover.

More procedures see „Final coat“.

 

Application temperature

Minimum application temperature: +5°C / 41°F. This temperature applies also for the drying time!

 

Underground

Excellent adhesion on various undergrounds like existing emulsion paints, sheetrock, wall­paper, cement, plaster, masonry, wood, etc. Always consider: The underground needs to be solid, clean, degreased and dry. Absorbent or porous surfaces must be prepared with a primer. Old coats of paint or old wallpapers which can be etched by water, should be removed.

 

Preparation

The conductive particles deposit on the bottom of the paint container after a prolonged storage. There-fore shake the paint container well or mix it thoroughly with an electrical paint stirrer.

 

Compatibility

The shielding paint is ready for use. Never mix with water or other coating materials!

 

Application

Use a first-class paint roller with a pile height of 10-13 mm.

Limited usable are lacquer-rollers, foam-rollers or brushes, the coating layer often gets too thin for a good attenuation!

To achieve a constant high attenuation, it is essential to apply the shielding paint with equal thickness; do not skip areas! Always soak the paint roller with the equal amount of paint and try to coat equal surfaces!

 The pigmentation size is under 200 μm, spraying with airless equipment is possible with bigger nozzles.

Allow to dry for 24 hours.

 

Final coat

To protect the soft/viscoplastic surface of this shielding paint against mechanical damage and humidity, we recommend two top coats:

Interior: With high-quality, good covering, plastic bonded dispersion emulsion paints or dispersion silicate paints (e.g. KEIM Biosil, Ecosil, Optil). Natural resin paints are usable with some limitations. Alternatively paste over with wall­papers, glass fabrics, etc

Exterior: With high-quality , good covering, highly hydrophobic dispersion emulsion paints or silicon resin paints.

Under plaster: Due to an adhesive tensile strenght of 4.1 N/mm² in conformity with ETAG 004 for EIFS-systems (stipulates minimal 0.08 N/mm²), this shielding paint is also usable directly under pure plastic bonded plaster. Never use mineral plasters, no adhesion! Never use: Pure mineral bonded coatings with clay, loam, chalk or silicate adhere very bad on this shielding paint, they should never be used!