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TMJ-20-LSB Black Spacecraft Coating

TMJ-20-LSB is an organic black paint developed for use on spacecraft and satellite hardware that has been coated with inorganic thermal control coatings.  It can also be applied to Beta cloth utilized in the manufacture of MLI blankets. If the Beta cloth is Teflon coated, the surface should be prepared with a suitable etchant prior to coating application for best results.  This coating material also exhibits good adhesion on hard anodized aluminum.  A specialized pigment in a silicone binder, TMJ-20-LSB can be spray deposited with an air brush or high-volume low-pressure system with the ease of other silicone paints to form a flexible organic black nonspecular marker coating for use on emblems, logos, signs etc.  TMJ-20-LSB meets flammability and toxicity requirements of NHB 8060.1C.

The table below lists the optical and application parameters of cured TMJ-20-LSB.

Nominal Surface Resistivity N/A
Thermal Emittance (ε_t) 0.91 ± 0.02
Solar Absorptance (α_s) ~0.96 at ≥ 1.5 mils thickness
Use Temperature Range -180 C to 600 C
Appearance/Color Nonspecular optical black
Nominal Dry Thickness 2.0 ± 0.5 mils (over 85% of coated area)
ASTM D3359A Adhesion Grade Not less than 3A
Full Cure, ambient 24 hours

View a typical spectral reflectance curve for TMJ-20-LSB (pdf 27KB). Measurements were taken with AZ Technology’s Laboratory Portable SpectroReflectometer LPSR-300.

Note: terms reflectance, emittance and absorptance and terms reflectivity, emissivity and absorptivity are often used interchangeably.

 

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