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CFC-Free Rigid Blend Polyols for Discontinuous Panels

DBC-405

[Description: ]

      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.

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      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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