INTRODUCTION
Donpipe 303 is one type of blend polyols foam system for pipe insulation, with cyclopentane as foaming agent. 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℃
(3) excellent low temperature dimensional stability
PHYSICAL PROPERTY
| Appearance
Dynamic viscosity（25℃） mPa.s Polyol/Cyclopentane=100/7 Density （20℃） g/ml Storage temperature ℃ Storage stability Month |
Light yellow to brown yellow transparent liquid 2000-3000（without foaming agent） 600-800（with cp） 1.10-1.16 10-25 6 |
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）
Cream 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 PERFORMANCES
| Molded foam density
Closed-cell rate Thermal conductivity(15℃) Compressive strength Water absorption Dimensional stability (24h，100℃) (24h，-30℃) High temperature-resistance |
GB 6343 GB 10799 GB 3399 GB/T8813 GB 8810 GB/T8811 |
40-80kg/m3 ≥90% ≤ 26mW/(m.K) ≥200kPa ≤3（V/V）% ≤1.5% ≤1.0% ≤140℃ |
The data provided above are typical value, which are tested by our company. For our company's products, the data included in the law do not have any constraints.