CFC-Free Rigid Blend Polyols for Discontinuous Panels

DBC-405 blend polyols is a compound which consists of polyether polyols surfactants catalysts,HFC-365/227 as blowing agent and flame retardant in a special ratio. The foam has good thermal insulation property light in weight high compress

  •       DBC-405 blend polyols is a compound which consists of polyether polyols surfactants catalysts,HFC-365/227 as blowing agent and flame retardant in a special ratio. The foam has good thermal insulation property light in weight high compression strength and flame retardant and other advantages. It is widely used to produce sandwich plates corrugated plates etc which applies to make cold stores cabinets portable shelters and so on.

  • Physical Property

     Appearance  Light yellow transparent viscous liquid
     Hydroxyl value mgKOH/g  300-360
     Dynamic viscosity (25℃)mPa.S  250-350
     Density(20℃) g/ml  1.10-1.16
     Storage temperature ℃  10-25
     Storage stability month  6

    Recommended Ratio

     Raw materials  pbw
     DBC-402B blend polyols  100
     Isocyanate  100-125

    Technology and Reactivity((the exact value varies depending on processing conditions)

     items  Manual mixing  High temperature machine
     Raw material temperature ℃  20-25  20-25
     Moulding temperature ℃  35-45  35-45
     Cream times  30-50  20-30
     Gel times  120-200  70-150
     Free density kg/m3  24-26  23-26

    Foam Performance

     Moulding density  GB 6343  ≥38kg/m3
     Closed-cell rate  GB 10799  ≥90%
     Thermal conductivity(15℃)  GB 3399  ≤22mW/(m.K)
     Compression strength(perpendicular to the direction of rising)  GB/T 8813  ≥140kPa
     Dimensional stability    
     24h -20℃  GB/T 8811  
     24h 100℃    ≤1.5%
     Flame retardant grade  GB/T8624  Class A


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