INTRODUCTION
DonPanel 423 system is a four components system which consists of blend polyols, polymeric MDI, catalyst and blowing agent (pentane series). The foam has good thermal insulation property, light in weight, high compression strength and flame retardant and other advantages. It is widely used to produce continuous sandwich panels, corrugated panels etc, which applies to make cold stores, cabinets, portable shelters and so on.
PHYSICAL PROPERTY
K1-blend polyols DonPanel 423
| Appearance |
Light yellow to brown transparent liquid |
| OHvalue mgKOH/g |
260-300 |
| Dynamic viscosity（25℃） mPa.S |
1800-2200 |
| Density （20℃） g/ml |
1.10-1.16 |
| Storage temperature ℃ |
10-25 |
| Storage stability month |
6 |
K2-Polymeric MDI DD-44V80
| Appearance |
brown transparent liquid |
| NCO content % |
30.50 |
| Dynamic viscosity （25℃） mPa.S |
600-700 |
| Density （20℃） g/ml |
1.24 |
| Storage temperature ℃ |
10-25 |
| Storage stability month |
12 |
K3-Cat 2816
| Appearance |
Light yellow transparent liquid |
| Dynamic viscosity （25℃） mPa.S |
1200-1600 |
| Density （20℃） g/ml |
0.96 |
| Storage temperature ℃ |
10-25 |
| Storage stability month |
6 |
RECOMMENDED RATIO
| Raw materials |
pbw |
| DonPanel 423 |
100 g |
| Cat2816 |
1-3 g |
| Pentane (Cyclopentane/Isopentane) |
7-10 g |
| Polymeric MDI DD-44V80 |
135-155 g |
TECHNOLOGY AND REACTIVITY (the exact value varies depending on processing conditions)
|
Items |
Manual mixing |
High pressure machine |
| Raw material temperature ℃ |
20-25 |
20-25 |
| Mould temperature ℃ |
45-55 |
45-55 |
| Cream time s |
10-15 |
6-10 |
| Gel time s |
40-60 |
40-60 |
| Free density kg/m3 |
34.0-36.0 |
33.0-35.0 |
MACHINERY FOAM PERFORMANCES
| Mold density | ISO 845 |
≥38kg/m3 |
| Closed-cell rate | ASTM D 2856 |
≥90% |
| Thermal conductivity （15℃） | EN 12667 |
≤24mW/(m.K) |
| Compression strength | EN 826 |
≥120kPa |
| Adhesive strength | GB/T 16777 |
≥100kPa |
| Dimensional stability 24h -30℃ | ISO 2796 |
≤0.5% |
|
24h -100℃ |
≤1.0% |
|
| Flame retardant grade | DIN 4102 |
Level B2 (no burning) |
| Water absorption ratio | GB 8810 |
≤3% |
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.