No.
|
Item
|
|
Standard
data |
Test result
|
1
|
Density
|
g/ml
|
±0.05
|
1.5
|
2
|
Sag
|
mm
|
≤3
|
0
|
3
|
Extrusion
|
min
|
≥100
|
450
|
4
|
Tack free time
|
min
|
≤20
|
18
|
5
|
Tensile strength
|
Mpa
|
≥0.4
|
0.8
|
6
|
Shore A
|
/
|
≥45
|
50
|
7
|
Elastic recovery rate
|
%
|
≥25
|
30
|
8
|
Elongation at break
|
%
|
≥100
|
250
|
9
|
Elongation at break after immersion in
water |
%
|
≥100
|
245
|
10
|
Adhesion after stretch-compression
cycles at the same temperature |
/
|
No break
|
No break
|
11
|
Flexibility at low temperature
|
ºC
|
-5
|
No break
|
12
|
Volume change rate
|
%
|
≤30
|
27
|