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Rigid Blend Polyols for Discontinuous sandwich panelsRigid Blend Polyol for Discontinuous sandwich panel DBC-402B
Product Introduction
DBC-402B blend polyols is a compound which consists of polyether polyols, surfactants, catalysts, foaming agent and flame retardant in a special ratio. The foam has good thermal insulation property, light in weight, high compression strength and flame retardance 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 Hydroxyl value mgKOH/g Dynamic viscosity (25°C) mPa.S Density (20°C) g/ml Storage temperature °C Storage stability month | Light yellow transparent viscous liquid 320-400 250-350 1.10-1.16 10-25 6 |
Recommended Ratio
Raw materials | pbw |
DBC-402B blend polyols Isocyanate | 100 100-105 |
Technology and Reactivity((the exact value varies depending on processing conditions)
items | Manual mixing | High temperature machine |
Raw material temperature °C Moulding temperature °C Cream time s Gel time s Free density kg/m3 | 20-25 35-45 30-50 120-200 23-26 | 20-25 35-45 20-30 70-150 23-26 |
Foam Performance
Moulding density Closed-cell rate Thermal conductivity(15°C) Compression strength(perpendicular to the direction of rising) Dimensional stability 24h -20°C 24h 100°C Flame retardant grade | GB 6343 GB 10799 GB 3399 GB/T 8813
GB/T 8811
GB/T8624 | ≥38kg/m3 ≥90% ≤22mW/(m.K) ≥140kPa
≤1% ≤1.5% Level B2 |
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