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Specifications
pu foam for pipeline insulationgood flowability
high temperature-resistance
excellent low temperature dimensional stabilit
Products Introduction
Pu foam for pipe insulation DQT-502 is a type of blend polyols, which is specially researched for rigid PUF to produce thermal insulation pipes. It is widely used in steam pipes, liquefied nature gas running pipes, oil pipes and other fields. The characteristics are as follows:
(1)good flowability, by regulating formula to suit different pipe diameters.
(2)high temperature-resistance performance,long standing in 150°C
(3)excellent low temperature dimensional stability
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 to brown yellow transparent liquid 300-450 200-500 1.10-1.16 10-25 6 |
Technology and Reactivity Characteristics
Component temperature is 20°C, the actual value is varied according to pipe diameter and processing condition.
Manual mixing | High pressure machine | |
Ratio(POL/ISO) Rise time s Gel time s Tack free time s Free density kg/m3 | 1:1.0-1.1.60 20-40 80-200 ≥150 25-40 | 1:1.0-1.60 15-35 80-160 ≥150 24-38 |
Foam Performance
Molded foam density Closed-cell rate Thermal conductivity(15°C) Compressive strength Water absorption Dimensional stability (24h,100°C) (24h,-30°C) High temperature-resistance | GB 6343 GB 10799 GB 3399 GB/T8813 GB 8810 GB/T8811 | 40-80kg/m3 ≥90% ≤33mW/(m.K) ≥200kPa ≤3(V/V)% ≤1.5% ≤1.0% ≤140°C |
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