Product Description
POLYOL BLEND ZHD-8007EWP
PRODUCT DESCRIPTION
ZHD-8007EWP is a formulated polyol system for continuous PIR panels and provides a good fire resistance.It is the mixture of polyol, flame retardant, silicone surfactant, water, catalyst. The blowing agent, HCFC-141B, should be added in premixing station. ZHD-8007EWP gives a good mixing effect with polymeric MDI. The foam of this system has a good flowability, low thermal conductivity, good dimensional stability and excellent fire resistance properties.
PHYSICAL and CHEMICAL PROPERTIES
| |
POLYOL |
ISOCYANATE |
Test Method |
| Apperance |
Clear amber liquid |
Dark brown viscous liquid |
|
| Viscosity@20ºC |
800-1000cps |
170-230cps |
ASTM D 445 |
| Specific gravity@20ºC |
1.15±0.01gm/cc |
1.23±0.01gm/cc |
ASTM D 891 |
| OH content |
450 mgKOH/g |
|
ASTM 4274 |
| NCO |
|
30-32% |
ASTM D 5155 |
| Mixing Ratio |
100 |
160 |
|
RECOMMENDED PROCESS CONDITIONS
System temperature:/
Compoment temperature:/
Mould temperature:/
TYPICAL REACTION PROPERTIES
| |
Units |
Handmix |
PACKING |
| Cream Time,sec |
s |
/ |
|
| Gel Time,sec |
s |
/ |
Blend Polyol in 200kg drums |
| Track Free Time,sec |
s |
/ |
| Free Rise Density,kg/m3 |
Kg/m3 |
39-39.5 |
BURNING CHARACTERISTICS
| Self extinguishing to (ASTM 1692-MD/74) |
Classification-B1 |
STORAGE OF MATERIALS
The materials are sensitive to humidity and partially used drums should be tightly sealed to
prevent the ingress of moisture.
ZHD-8007EWP-A (Polyol Blend)
The Polyol blend has a shelf life of three months from date of manufacture when stored indoors
at temperatures of 20-30°C. The Polyol blend should be thoroughly mixed before use.
ZHD-8007EWP-B (Isocyanate)
The Isocyanate has a shelf 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 so lids may occur).
SAFTY PRECAUTIONS
Direct contact with ZHD-8007EWP can lead to moderate eye irritation and mild skin irritation, which can cause skin allergies. Repeated inhalation of high concentration of volatile gas will cause respiratory allergy, and should be treated immediately. Anti- inflammatory and anti-allergic treatment measures should be taken. Please be careful in the operation to prevent contact with the skin and splash into the eye, please wear the necessary protective equipment (gloves, protective goggles, working clothes, etc.). Once splashed on the skin or the eye, rinse with water immediately for at least 15 minutes, and the skin is washed with soapy water. Please seek medical treatment immediately after swallowed. Notice: This product specification is intended to be used by Shunda Polyurethane Company in order to show sincerity to our customers, while it is not covered by law as a guarantee. Customers can adjust according to the actual operating conditions. If you have any questions, please call our company and we will serve you wholeheartedly.
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