DIMONDS® P1812/PIR Blend Polyols for PIR Foam Discontinuous Sandwich Panel
Description
DIMONDS® P1812/PIR is a type of blend polyols developed for discontinuous panel. It contains polyether polyol, silicone surfactant, catalysts, flame retardant and other special additives etc. It has good flowability and flammability compared with PUR foam.
Typical Properties
Item | Unit | DIMONDS® P1812/PIR | DIMONDS® ISO1800 |
Physical state | Appearance | Transparent liquid | Brown liquid |
Viscosity, 25℃ | mpa.s | 300-500 | 150-250 |
Gravity,20℃ | g/ml | 1.15±0.05 | 1.24±0.01 |
Reaction properties (hand test)
Item | Unit | Specification |
Cream time | sec | 15-30 |
Gel time | sec | 100-180 |
Free rise density | kg/m3 | 27-29 |
Processing information
Item | Unit | Specification |
Component temperature | ℃ | 22±3 |
Mold temperature | ℃ | 55±3 |
Dynamic pressure | kPa | 125±10 |
Demold time | Min | >30 |
It is recommended to utilize high pressure foaming machinery. The chemicals should be adjusted to the correct temperature between 20-24℃ to ensure reactivity and viscosity suitable for processing.
The mixing pressure has to be set for both components at 120-130 bar.
The mould temperature recommended is 50-55℃ to guarantee good foam performances.
Foam properties
Item | Unit | Specification | Test standard |
Core density | kg/m3 | ≥40 | ASTM D1622-08 |
Thermal conductivity, 20℃ | W/(m.k) | ≤0.024 | 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℃ | % | ≤1.5 | ASTM D2126-09 |
Flammability | B2 | DIN 4102 |
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
DIMONDS® P1812/PIR 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
220kg/drum or 1100kg/IBC for polyol, 250kg/drum or 1250kg/IBC for isocyanate.