AZ-400-LSW is an extremely low off-gassing organic white thermal control paint developed for use on spacecraft and satellites to coat hard anodized aluminum. A specialized pigment in a silicone binder, AZ-400-LSW 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 nonspecular white marker paint. AZ-400-LSW meets flammability and toxicity requirements of NHB 8060.1C.
The main advantage of AZ-400-LSW relative to AZ-93 and AZW/LA-II is that it has similar very low outgassing but does not require controlled temperature and humidity when applying.
The table below lists the optical and application parameters of cured AZ-400-LSW.
|Nominal Surface Resistivity||N/A|
|Thermal Emittance (ε_t)||0.89 ± 0.02|
|Solar Absorptance (α_s)||0.169 ± 0.02 at ≥ 3.0 mils thickness|
|Use Temperature Range||-180 C to 700 C|
|Appearance/Color||Nonspecular optical white|
|Nominal Dry Thickness||3.0 ± 1.0mils (over 85% of coated area)|
|ASTM D3359A Adhesion Grade||Not less than 3A|
|Full Cure||48 to 72 hours|
|Coating coverage estimates can be found here.|
|The SDS can be found here.|
Note: terms reflectance, emittance and absorptance and terms reflectivity, emissivity and absorptivity are often used interchangeably.