Temperature-Resistance Polyurethane Blend Polyols for Pipeli
This product 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 a
  • Temperature-Resistance Polyurethane Blend Polyols for Pipeline
    Products Introduction
    This product 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 performancelong standing in 150℃
    (3)excellent low temperature dimensional stability

  • Physical Property

    Appearance Light yellow to brown yellow transparent liquid 300-450
    Hydroxyl value mgKOH/g 800-1200
    Dynamic viscosity(25℃)   mPa.s 1.10-1.16
    Density (20℃)g/ml 10-25
    Storage temperature ℃ 6
    Storage stability Month  

    Technology and Reactivity Characteristics

    Component temperature is 20℃ the actual value is varied according to pipe diameter and processing condition.
      Manual mixing High pressure machine
    Ratio(POL/ISO) 1:1.0-1.1.60 1:1.0-1.60
    Rise times 20-40 15-35
    Gel times 80-200 80-160
    Tack free times ≥150 ≥150
    Free density kg/m3 25-40 24-38

    Foam Performance

    Molded foam density GB 6343 40-80kg/m3
    Closed-cell rate GB 10799 ≥90%
    Thermal conductivity(15℃) GB 3399 ≤33mW/(m.K)
    Compressive strength GB/T8813 ≥200kPa
    Water absorption GB 8810 ≤3(V/V)%
    Dimensional stability(24h,100℃) GB/T8811 ≤1.5%
    (24h,-30℃)   ≤1.0%
    High temperature-resistance   ≤140℃

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