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    • Differences between freon and water blowing agents

    13 December 2018
    Comparative Characteristics Blowing Agent  
      Freon Water
    Price 10-15% more expensive than domestic water systems and 40-50% more expensive than imported systems. 10-15% cheaper than freon systems of domestic components and 40-50% cheaper than imported systems.
    Processing conditions Summer systems - spraying at temperatures from +10°C to +30°C. processing Conditions are limited at high temperatures.
    Winter systems – spraying at temperatures from -10°C to +15°C. Processing conditions are limited at high temperatures. When processing winter freon systems at low temperatures from +10 to -10°C, it is necessary to apply a primer (dust) layer. The next layer of polyurethane primer is applied after at least 5 hours.     		Spraying can be done at temperatures from +10°C to +40°C. There are no winter systems for spraying foam at low temperatures.
    Storage Freon is more sensitive to temperature changes, partially flies away during its storage. When storing barrels on the street, in a hot weather, the barrels can swell. Temperature changes are not critical for storage.
    Adhesion Adhesion to the base and between layers is better than in water systems Adhesion to the base and between the layers is worse than that of freon systems.
    Thermal conductivity 10-15% lower than in water systems, so the foam thickness can be made 10-15% less. 10-15% higher than in freon systems, therefore the insulation thickness should be made by 10-15% more.
     
    Density There are no freon systems for spraying foam with density lower than 25 kg/m3. There are components for spraying with density of 8-20 kg/m3.
    Actual density for systems with a density of 30 kg/m3. The actual density of the finished foam 33-36 kg/m3 or 13-14 cubes with 1 set with a mass of 470 kg and with a thickness of 5 cm for components with a density of 30 kg/m3 at the ambient temperature of 25-30°C and applied two layers of 2,5 cm on the high-pressure vessel. The actual density of the finished foam 40-43 kg/m3, or 10.9 11.75 cubes with 1 set with a mass of 470 kg and with a thickness of 5 cm for components with a density of 30 kg/m3 at the ambient temperature of 25-30°C and applied two layers of 2,5 cm on the high-pressure vessel.