High Density Polyurethane Blend Polyols for Pipe Shells
This product is a type of blend polyols with 100% water as blowing agent which is specially researched for rigid PUF to produce thermal insulation pipe shells. It is mainly used in liquefied nature gas running pipes oil pipes and other fie
  • High Density Polyurethane Blend Polyols for Pipe Shells

    Products Introduction

    This product is a type of blend polyols with 100% water as blowing agent which is specially researched for rigid PUF to produce thermal insulation pipe shells. It is mainly used in 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)excellent foam mechanical properties
    (3)excellent high/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 1.05-1.10
    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) 1:1.0-1.1.20 1:1.0-1.20
    Rise times 20-40

     

    15-35

     

    Gel times 100-150 ≥120
    Gel times 100-150 ≥120
    Core Free density kg/m3 100-400 100-400

    Foam Performance

    Molded foam density GB 6343 200-600kg/m3
    Closed-cell rate GB 10799 ≥90%
    Thermal conductivity(15℃) GB 3399 ≤0.040mW/(m.K)
    Compressive strength GB/T8813 ≥2Mpa
    Water absorption GB 8810 ≤3(V/V)%
    High temperature-resistance   ≤140℃
    Low temperature-resistance   ≤-60℃

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