Diffuse Black Coatings and Materials

Avian Black-S

Avian-DS Black

Avian-EP Black

 

Avian Black-S Coating

Avian Black-S coating is a spray on, two part water based urethane coating that exhibits low reflectance over a wide wavelength range. The water-borne coating exhibits very low gloss and is quite durable compared to most low reflectance coatings. It is easily mixed and may be applied with standard spraying equipment. Cleanup is easily done with water and detergent.

The coating passes and exceeds Mil spec for live agents and durability. It is a low VOC coating (<1.8 lbs/gallon) and is non-flammable as applied.

The reflectance is <3.5% over most of the UV-Vis-NIR and appx. 3% over most of the range.

Avian Black-S
Typical 8°/Hemispherical Reflectance Data

Wavelength

Reflectance

  

Wavelength

Reflectance

  

Wavelength

Reflectance
250 .040   800 .032   1600 .031
300 .034   900 .030   1800 .033
400 .032   1000 .029   2000 .035
500 .031   1100 .029   2200 .037
600 .031   1200 .029   2400 .038
700 .032   1400 .030   2500 .040

 

Physical Properties:
  • Gloss: 1%< @ 60°, <3.5% @ 85° Flexibility: Pass 1/8" Mandrel 180° bend
  • Viscosity: 70-75 KU Pot Life: 4 hours
  • Coverage: 640 sq. ft. /gallon at 1 mil thickness
  • Air Quality: <1.8 lbs/gallon V.O.C.
  • Weathering: QUV >1000 hrs. Xenon Weatherometer >2000 hrs. no change
  • Chemical Resistance: Water >168 hrs. immersion
  • Hydrocarbon TT-S-735 Type III: <168 hrs. immersion
  • 10% Acetic Acid: 1 hour spot

 

The coating may be applied over most primers. Typically a 1-2 mils thickness gives full opacity.

Avian Black-S is available as a kit that makes appx. 1.5 liters of coating. Please call for larger quantity prices.

Part # Description
Avian-BKS-QT 1.5 Quart Avian-Black S Coating

 

 

Avian-DS Black

Avian-DS black is an etch-anodize process similar to what was known as Martin Black. Avian-DS, however, is even more absorbent of light. It is the blackest material we've seen in almost twenty years in this field. Coating is limited to parts fabricated from aluminum. This is a batch process, so small lots tend to be very expensive but the coating is economical for large lots or OEM quantities. This coating can only be applied to aluminum substrates.

We are working to extend the range of Avian-DS Black further into the NIR. The data shown is for our most recent iteration of the process. Please call us for pricing on Avian-DS Black.

Avian-DS Black
Typical 8°/Hemispherical Reflectance Data

Wavelength

Reflectance

  

Wavelength

Reflectance

  

Wavelength

Reflectance
250 .009   800 .006   1600 .223
300 .007   900 .008   1800 .305
400 .008   1000 .011   2000 .335
500 .006   1100 .020   2200 .355
600 .006   1200 .043   2400 .354
700 .006   1400 .123   2500 .328

 

 

Avian-EP Black

Avian-EP Black is an electrochemical process that can be applied to almost any substrate including plastic or glass. The coating is highly diffuse but somewhat fragile, so its use in applications that require handling of the optical surface are not recommended.

Optically, Avian-EP Black is very highly absorbent in the UV-Vis-NIR and has better range than Avian-DS Black (above). The coating remains 'black' out to 7-8 microns.

As with Avian-DS Black, Avian-EP black is a batch process, so small quantities may be expensive but in OEM quantities, the process can be quite economical. Please call us for pricing on Avian-EP Black.

Avian-EP Black
Typical 8°/Hemispherical Reflectance Data

Wavelength

Reflectance

Wavelength

Reflectance

Wavelength

Reflectance
250 .010   800 .028   1600 .029
300 .011   900 .044   1800 .029
400 .013   1000 .040   2000 .030
500 .012   1100 .036   2200 .033
600 .011   1200 .034   2400 .035
700 .013   1400 .031   2500 .036

 

graph

 

 

Avian Products