HD-DB-40I Rigid
PIR foam systems for continuous manufacturing sandwich panels
HP-DB-40I is four-component rigid PIR foam system specially designed
for PIR sandwich panels. B-component is modified polyisocyanate(MDI),
while A-component is made up of polyether polyalcohol, catalyst and
stabiliser,etc., C-component is blowing agent and D-component is flame
retardant. The systems is featuring of good foaming stability and
dimensional stability, excellent insulation performance and fire resistant
performance.
Physical properties:
| A-component |
B-component |
| Item |
Index |
Item |
Index |
|
hydroxy content (MgKOH/g)
|
250¡À50 |
-NCO content(%) |
30-33 |
| viscosity(25¡æ)(MPa.s) |
800¡À200 |
viscosity(25¡æ)(MPa.s) |
200¡À40 |
| specific gravity(25¡æ)(g/cm3) |
1.21¡À0.05 |
specific gravity(25¡æ)(g/cm3) |
1.235¡À0.02 |
proportioning by weight£ºA£ºB=100£º£¨130-150£©
reaction time£º(data of laboratory test,working temperature at 25¡æ)
| reaction time |
HD-DB-40I |
| CT £¨sec£© |
15¡À5 |
| GT £¨sec£© |
45¡À10 |
| RT £¨sec£© |
50¡À15 |
Foam performance£º
| Item |
Value |
Testing method |
| core density(kg/m3) |
36¡À2 |
GB6343-86 |
| free density(kg/m3) |
33¡À1 |
GB6343-86 |
| compressive strength(MPa) |
¡Ý0.15 |
GB8813-88 |
| thermal conductivity(W/m.K) |
¡Ü0.025 |
GB10294-88 |
| closed cells content(%) |
¡Ý92 |
ISO DIS4590 |
| dimensional stability(%)(-30¡æ-100¡æ/96h) |
¡Ü3 |
GB8811-88 |
| water absorption(%) |
¡Ü3 |
GB8810-88 |
Packaging:Galvanized zinc metal barrel. A-component: 200kg/barrel;
B-component: 250kg/barrel.
Shelf life: 6 months
Note:HD-DB-40I series can provide relative brand systems of blowing
agent CFC 11 or 141B according to products' detailed use and performance
requirement from clients. The fire resistant grades are customer-made
according to customer requirements and international construction
fire resistant grade. Please contact Beijing Bora Polyurethanes
Co.,Ltd for more information about technology and business.
|
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