| Customization: | Available |
|---|---|
| Molecular Principal Chain: | Naphthenic Polymer |
| Color: | Brown |
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Blend Polyol DFR3 Series for Pre-insulated Pipe and Shell
1.APPLICATION:
A two-component polyurethane foam insulation system for the manufacture of shells, plates and other products for thermal insulation purposes.The system does not contain ozone-depleting CFCs. Blowing agent provides with CFC free.
Blend Polyol DFR3 Series is a fully blended rigid polyurethane foam system.It has an excellent cure, small hold-in forms, uniform cell structure, low thermal conductivity.Operating temperature up to 120ºC
2.Chemical characterization of system components DFR3 Series:
2.1Component A brand Polyol blend:
A mixture of polyethers and special additives.
2.2Isocyanate:
Polymeric diphenylmethane diisocyanate
3.Typical property:
|
Polyol blend |
Isocyanate |
|
|
Density, g/cm3 (20ºC) |
1.08 |
1.24 |
|
Viscosity, mPa s (25ºC) |
700 |
200 |
|
Storage stability,month |
3 |
6 |
|
Storage temperature, ºC |
20~25 |
20~25 |
When stored in a tightly closed container in a dry place at the recommended temperature.
4.Typical Reaction Data
The components Mixing in a laboratory mixer speed to 5000 rpm, 60mm diameter beaker for 10s at temperature 20ºC
|
Product Item |
DFR311A |
DFR311B |
DFR322A |
DFR322C |
|
|
Blowing agent |
type |
HCFC-141b |
HCFC-141b |
All water |
All water |
|
Free rise density |
Kg/m3 |
40~45 |
40~45 |
40~45 |
40~45 |
|
Pipe diameter (applicability) |
Φ |
≤Φ426, temperature resist 130ºC |
Φ426~820, temperature resist 150ºC |
≤Φ426 |
≥Φ820, temperature resist 142ºC |
Because the reaction parameters depend on the intensity of mixing and temperature of components.So listed values should be considered as indicative reference.
5.Application Guidline
made according to the data presented in this technical information on the casting machine, high and low pressure.The temperature of the forming equipment is 30 - 35 C°
6.Typical Physical Properties
|
Property |
Unit |
Value |
|
Density |
kg/m3 |
40-60 |
|
≥ 60 |
||
|
Closed cell content |
% |
90 |
|
Coefficient of thermal conductivity |
W / m K |
0.025 |
|
Compressive strength (10% deformation) |
Kpa |
250 |
7.APPLICATION GUIDELINES
8.1Facing Preparation
The facings should be clean, dry, and free of grease, oil, solvent or other contaminants, which will interfere with proper adhesion and/or polyurethane insulation quality.This product should be used with facing temperatures in the range 25-45°C.Higher facing temperatures (40° - 45° C) will enhance foam flow and adhesion.
8.2Equipment Type
This product is suitable for both Low or High Pressure dispensing equipment and hand mix.
8.STORAGE OF MATERIALS
The materials are sensitive to humidity and partially used drums should be tightly sealed to prevent the ingress of moisture.
Polyol Blend
The Polyol blend has a shelf life of six months from date of manufacture when stored in doors at temperatures of 20-30°C.The Polyol blend should be thoroughly mixed before use.
Isocyanate
The Isocyanate has a helf life of one year from date of manufacture when stored indoors at temperatures of 20-30°C.Avoid storage temperatures of below 0°C (as some crystallization may occur) or above 50°C (as formation of insoluble solids may occur).
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