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SOUND ABSORBENT F.A. SHEET
Polyurethane foamsProduced in foamed polyurethane dens. 0,30 kg./dm³,...
Poliucell
It's a cell foamed polyurethane. Its special structure (half-closed thin cells). Its special structure gives excellent mechanical performances as it can give elastic responses better than dense rubber allowing deformations and heavy prestress and keeping minimum side expansions. Ageing resistance and hydrocarbons resistance are excellent. Performances are determined by densities.
Description
It is produced in sheets size 250x500x50 mm with skin, that afterwards are broken in small sheets without skin with lower thickness, to a minimum of 2 mm. it is easily printable in particulars with drawing shapes and juncture to metal; equipment costs are very low. It is used in production of springs, vibration dampers gasket for bonnets, end-motion pads, rolls for gives painting and spreading, etc.
WORKING TEMPERATURE -20 +60°C.
On request it can be produced in sheet size mm. 1000x1000x30 and mm. 250x750x50.
| References |
Norme |
U.d.M. |
35 |
40 |
45 |
50 | 55 | 60 |
65 |
| Density |
DIN 53479 |
gr/cm3 |
0,35 |
0,40 | 0,45 | 0,50 | 0,55 | 0,60 | 0,65 |
| Ult. elongation |
DIN 53504 |
% |
450 |
450 | 470 | 470 | 500 | 500 | 450 |
| Ult. tensile strength |
DIN 53504 |
Kg/cm2 |
400 |
480 | 650 | 700 | 750 | 750 | 800 |
| Tear resistance |
ASTM D 624C |
Kg/cm |
130 |
140 | 150 | 160 | 170 | 190 | 200 |
| Resilience |
DIN 53512 |
% |
53 |
50 | 50 | 50 | 50 | 50 | 50 |
| Permanent set 70 h./t.a. % |
DIN 53517 |
% |
5,0 |
5,5 |
6 |
6,5 |
7 |
8 |
9 |
| Permanent set 22 h./70 °C % |
DIN 53517 |
% |
|
||||||
| Aging In air at 100°C for 70 h. |
ASTM |
|
|||||||
| Δ extensibility |
% |
±10 |
±10 |
±10 |
±10 |
±10 |
±10 |
±10 |
|
| Δ tensile strength |
% |
±5 |
±5 |
±5 |
±5 |
±5 |
±5 |
±5 |
|
| Aging in oil ASTM n° 3 at 100°C for 70 h. |
ASTM |
||||||||
|
Δ extensibility |
% |
±10 |
±10 |
±10 | ±10 | ±10 | ±10 | ±10 | |
| Δ tensile strength |
% |
±5 |
±5 |
±5 |
± 5 | ± 5 | ± 5 | ± 5 | |
| Variazione volume |
% |
+2 |
+2 |
+2 |
+2 |
+2 |
+2 |
+2 |
|
| Aging in oil ASTM n° 5 at 100°C for 70 h. |
ASTM |
||||||||
| Δ extensibility |
% |
±10 |
±10 |
± 7 |
± 7 | ± 6 | ± 5 | ± 4 | |
| Δ tensile strength |
% |
± 5 |
± 5 |
± 6 | ± 5 | ± 4 | ± 4 | ± 1 | |
| Δ volume |
% |
+ 2 |
+3 |
+2,5 |
+2 |
+2 |
+2 |
+1 |
|
| Working temperature |
ASTM |
°C |
-45 |
-45 |
-45 |
-45 |
-45 |
-45 |
-45 |
