Rigid foam polyurethane for pipe insulation

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Quick Details

  • Place of Origin:China (Mainland)

  • Type:Synthetic Resin and Plastics, Blend polyols

  • Model Number:DQT-502

  • Appearance:Pale yellow to brown viscous liquid

  • Hydroxyl Value:300-450

  • Dynamic Viscosity:100-250

  • Density:1.10-1.16

  • Strorage Temperature:10-25

  • Storage Stability:6

Packaging & Delivery

Packaging Details:New steel drums 220kg/drum or 1 ton/IBC
Delivery Detail:within 5 days after receipt of payment


DQT-502 is a type of blend polyether 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 Properties

Appearance                       pale yellow transparent viscous liquid

Hydroxyl Value mgKOH/g                          300-450

Dynamic Viscosity (25 °C) mPa.s              200-500

Gravity (20 °C ) g/ml                                1.10-1.16

Storage Temperature °C                            10-25

Storage Stability month                                 6

Technology and Reactivity (the exact value varied depending on processing conditions)

                                             Manual Mixing          Mechanical Foaming

Ratio (POL/ISO)                                  1:1.0-1:1.10                             1:1.0-1:1.10

Rise time                                   20-40                            15-35

Cel time  s                                80-200                          80-160

Trck free time  s                        ≥150                              ≥150  

Free Density kg/m3                  25-40                             24-38

Foam Performance

Molding  Density                                      GB/T 6343          40-80kg/m3

Closed-cell Rate                                      GB 10799           ≥ 90%

Thermal Conductivity (15 °C)                  GB/T 3399           ≤33 mW/(m.K)  

Compressive strength                              GB/T 8813          ≥200kPa  

Water absorption                                     GB/T 8810          ≤3(V/V)%  

Dimensional Stability                                GB/T 8811      

(24h, -20 °C)                                                                       ≤1.5%

(24h, 100 °C)                                                                      ≤1.0%

High temperature-resistance                                               ≤140°C

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