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¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡HD-DB-30 Rigid PU foam systems for spraying
HD-DB-30 is double-component rigid PU foam system specially designed
for spraying. B-component is modified polyisocyanate(MDI), while
A-component is made up of polyether polyalcohol, blowing agent,catalyst
and stabiliser,etc. The systems is featuring of rapid reaction and
solidification and thus applied to the thermal insulation, refitting
and sealing for cold rooms, roofs, walls, tanks, containers and
cargo ships.etc.
Physical properties:
| A-component |
B-component |
| Item |
Index |
Item |
Index |
|
hydroxy content (MgKOH/g)
|
450¡À50 |
-NCO content(%) |
30-33 |
| viscosity(25¡æ)(MPa.s) |
1000¡À300 |
viscosity(25¡æ)(MPa.s) |
200¡À40 |
| specific gravity(25¡æ)(g/cm3) |
1.180¡À0.05 |
specific gravity (25¡æ)(g/cm3) |
1.235¡À0.02 |
Proportion of weight£ºA£ºB=100£º£¨100-120£©
Reaction time£º£¨data of laboratory test, working temperature at
25¡æ£©
| reaction time |
HD-DB-30 |
| CT£¨sec£© |
3-5 |
| GT£¨sec£© |
10-15 |
| TFT£¨sec£© |
18 |
Foam Performance:
| Item |
Value |
Testing method |
| overall density(kg/m3) |
35-40 |
GB6343-86 |
| core density(kg/m3) |
30-32 |
GB6343-86 |
| compressive strength(MPa) |
¡Ý0.15 |
GB8813-88 |
|
thermal conductivity(W/m.K)
£¨KCaL/m.h.¡æ£©
|
¡Ü0.025 |
GB10294-88 |
| ¡Ü0.022 |
GB10294-88 |
| closed cells content (%) |
¡Ý90 |
ISO DIS4590 |
| dimensional stability(%) |
¡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-30 series can provide systems of relative brand
according to products' detailed use and performance requirement
from clients. If users produce products with flame retardant, fire
resistant grades are required. Please contact Beijing Bora Polyurethanes
Co.,Ltd for more information about technology and business.
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