In the case of thermal insulation paints, we use a different method of determining such a low coefficient as λc (λobl) = 0.001 - 0.002 (SFEROLIT).
Sferolit thermal insulation paints have excellent insulation properties at operating temperatures from -50 ° C to + 600 ° C (temperature range depends on the type of paint). In addition, the second very important indicator is the reflectivity of the paint. These two parameters are important to calculate the true insulation parameter of a thermal insulation paint. Therefore, two important tests should be performed: 

Obtaining the above two test results, we obtain, according to the formula, the final thermal conductivity coefficient

λc (λobl) 0.0012 W/(mK) 

The table below provides examples of typical insulators that can be replaced with Sferolite, considering similar requirements for heat flux and temperature difference between the outside and inside temperatures:

Insulator Type | Example Materials

-------------- | -----------------

Fiberglass     Fiberglass batts, rolls, or loose-fill

Cellulose      Cellulose fiber insulation

Mineral Wool    Rock wool or slag wool

Expanded Polystyrene (EPS) | EPS foam boards or beads

Extruded Polystyrene (XPS) | XPS foam boards

Please note that the suitability of Sferolite as a replacement for these insulators depends on specific application requirements and should be evaluated on a case-by-case basis.

1

The TSR factor was determined in accordance with the ISO 22969-2019-7 standard.
The spectral characteristics of the coatings were determined in the range of solar radiation
of 300-2500 nm using a V-670 UV / VIS / NIR double beam spectrophotometer with an integrating ball, Jasco. The Total Solar Radiation Index (TSR) was calculated based on ASTM E903 using the developed calculation program. The given result is the average of 3 measurements.

2

The emissivity coefficient was determined using a FLIR thermal imaging camera with the E60 symbol based on our own methodology. The given result is the average of 3 measurements. The SRI was calculated from ASTM E1980-11 (2019) Standard Practice for Calculating Solar Reflectance Index
of Horizontal and Low-Sloped Opaque Surfaces. 

Laboratory test results.

The research was carried out by scanning electron microscopy using a TESCAN VEGA 4 microscope (Figure 1). The tests consisted in the application of a scanning, focused and concentrated electron beam of a specific energy onto the analysed area of the sample surface. The electron beam penetrated the surface layer of the material, exciting various signals from the layer under test. The excited secondary electron (SE) signal allowed imaging of the topography of the observed surface. 

PHYSICAL AND CHEMICAL PROPERTIES