MLP-300-AZ RF Transparent Primer

MLP-300-AZ is a RF transparent sprayable primer material that provides surface morphology and adhesion to substrates for the application of conventional thermal control paints on spacecraft and satellites.  The use of MLP-300-AZ allows ceramic thermal control paints such as AZ Technology’s AZ-93 white thermal control paint to be used to coat a variety of substrates:  alodined and sealed hard anodized 6061-T6, 7075-T352, and other aluminum alloys, stainless steel, epoxy graphite composites, cyanate ester composites, conversion coated titanium, electroless nickel plating, and even 3 mil thick Kapton film.

The table below lists the application parameters of cured MLP-300-AZ.


Use Temperature Range -180 C to 260 C
Nominal Dry Thickness 0.75 ± 0.25 mils (over 85% of coated area)
Nominal dry film density 1.0 gm/cm3
Appearance/Color Light Gray
ASTM D3359A Adhesion Grade Not less than 3A
Full Cure 7 days

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