Formulated Blend Polyols for Refrigerators
Formulated Blend Polyols For Refrigerators
DmcCool1851
General Description
DmcCool1851 is a compounded polyether polyol developed for refrigerators and freezers. It is water based system which is ready system contains polyether polyol, silicone surfactant, catalysts and water.
Typical Properties
| Item | Unit | DmcCool 1851 | DmcIso 1800 |
| Physical state | By visual | Transparent liquid | Brown liquid |
| Viscosity, 25℃ | mpa.s | 600-800 | 150-250 |
| Gravity,20℃ | g/ml | 1.08±0.05 | 1.23-1.25 |
Reaction properties (hand test)
| Item | Unit | Specification |
| DmcCool1851 | g | 100 |
| Polymetic MDI | g | 130-140 |
| Cream time | sec | 10-12 |
| Gel time | sec | 60-80 |
| Free rise density | kg/m3 | 26-28 |
Processing informations
| Item | Unit | Specification |
| Component temperature | ℃ | 25±3 |
| Mold temperature | ℃ | 40±3 |
| Dynamic pressure | kPa | 130±10 |
| Demold time | Min | >6 |
It is recommended to utilize high pressure foaming machinery. The chemicals should be adjusted to the correct temperature between 22-27℃ to ensure reactivity and viscosity suitable for processing.
The mixing pressure has to be set for both components at 120-150 bar.
The mould temperature recommended is 35-45℃ to guarantee good foam performances.
Foam properties
| Item | Unit | Specification | Test standard |
| Core density | kg/m3 | ≥34 | ASTM D1622-08 |
| Thermal conductivity, 10℃ | W/(m.k) | ≤0.026 | ASTM C518-10 |
| Compressive strength | kPa | ≥140 | ASTM D1621-10 |
| Closed cell content | % | ≥90 | ASTM D6226 |
| Water absorb | % | ≤3 | ASTM C209-12 |
| Thermal stability, -30-80℃ | % | ≤2.0 | ASTM D2126-09 |
The above testing data have been generated in lab or field conditions which are typical for this application. They are believed to be correct but data variations due to varying processing or ambient conditions can not be excluded. The customer remains responsible for making his own interpretation of data and suitability of the chemicals to his particular operation.
Handling and Storage
DmcCool1851 should be protected from moisture by keeping containers sealed when not in use. Drums have to be stored indoors to protect the material from water ingress, frost and direct heat from the sun. Under temperature conditions and in properly sealed containers ,the storage life of the polyol is 6 months.
The optimum storage temperature should be 10-30℃.
Package
Net Weight —200-220kg/drum or 1000kg/IBC or 20MT/Flexitankfor DmcCool 1851.
—250kg in drum for DmcIso 1800.
