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It is used to increase the fire resistance of load-bearing metal structures in open atmospheres. Fire-retardant thermally expanding material BST MA is a solution of a polymer in an organic solvent containing a number of functional additives, fillers and mineral pigments.
| Color | grey |
| Density, g/cm³ | 1,12±0,1 |
| Mass fraction of dry residue, %, not less | 55±5 |
| Interlayer drying at 20°C and humidity ≤65%, h | 3 |
| Adhesion of coating to compatible primers according to GOST 32702.2-2014, no more, point | 2 |
| Degree of expansion, %, not less | 2000 |
| Thinner, not more than 5% by weight | xylene |
| Fire retardant efficiency, min | 15 | 30 | 45 | 60 | 90 |
| Reduced metal thickness, mm | 3,4 | 3,4 | 3,4 | 3,4 | 5,8 |
| Thickness of fire retardant coating, mm | 0,4 | 0,75 | 1,12 | 1,75 | 2,1 |
| Theoretical consumption, kg/m² | 0,8 | 1,5 | 2,24 | 3,5 | 4,2 |
- Surfaces must be dry and free of dust, degreased and primed.
- Before using BST MA, mix with a mechanical stirrer to a homogeneous consistency for 3-5 minutes.
- The material is applied in layers; it is recommended to apply it by airless spraying or manually using paint brushes.
- The thickness of the first wet layer when applied should not exceed 400 microns. All subsequent layers must be applied with a recommended thickness of one wet layer of no more than 1800 microns.
- Interlayer drying is from 3 hours. Complete drying of the coating is achieved in no less than 3 days.
- Application temperature from -10°C to + 40°C, relative humidity no more than 85%.
- After application, wash all working tools and equipment with xylene, P5, P4.
- When working with BST MA, it is necessary to use personal protective equipment.
- BST MA is packaged in sealed metal buckets weighing 18 kg.
- Store and transport in a dry place, protected from direct sunlight, at temperatures from - 40°C to + 40°C.
- The shelf life of BST MA in original, unopened packaging is 12 months from the date of production, subject to compliance with storage conditions.
| Color | grey |
| Density, g/cm³ | 1,12±0,1 |
| Mass fraction of dry residue, %, not less | 55±5 |
| Interlayer drying at 20°C and humidity ≤65%, h | 3 |
| Adhesion of coating to compatible primers according to GOST 32702.2-2014, no more, point | 2 |
| Degree of expansion, %, not less | 2000 |
| Thinner, not more than 5% by weight | xylene |
| Fire retardant efficiency, min | 15 | 30 | 45 | 60 | 90 |
| Reduced metal thickness, mm | 3,4 | 3,4 | 3,4 | 3,4 | 5,8 |
| Thickness of fire retardant coating, mm | 0,4 | 0,75 | 1,12 | 1,75 | 2,1 |
| Theoretical consumption, kg/m² | 0,8 | 1,5 | 2,24 | 3,5 | 4,2 |
- Surfaces must be dry and free of dust, degreased and primed.
- Before using BST MA, mix with a mechanical stirrer to a homogeneous consistency for 3-5 minutes.
- The material is applied in layers; it is recommended to apply it by airless spraying or manually using paint brushes.
- The thickness of the first wet layer when applied should not exceed 400 microns. All subsequent layers must be applied with a recommended thickness of one wet layer of no more than 1800 microns.
- Interlayer drying is from 3 hours. Complete drying of the coating is achieved in no less than 3 days.
- Application temperature from -10°C to + 40°C, relative humidity no more than 85%.
- After application, wash all working tools and equipment with xylene, P5, P4.
- When working with BST MA, it is necessary to use personal protective equipment.
- BST MA is packaged in sealed metal buckets weighing 18 kg.
- Store and transport in a dry place, protected from direct sunlight, at temperatures from - 40°C to + 40°C.
- The shelf life of BST MA in original, unopened packaging is 12 months from the date of production, subject to compliance with storage conditions.
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