| Essentials |
Asaprene™ E20 is a block SBR
with low Mooney viscosity and low styrene content.
It is particularly effective for obtaining low heat
buildup and high resilience. It is supplied in 35-kg
bales.
Contact
us for information on handling and use.
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|
| Applications |
| Targeted fields of
application include industrial products and footwear. |
|
| Basic characteristics of typical
silica-dispersed Asaprene™ E20 formulation1 |
| Property |
E20 |
Asaprene™
1205 |
| Polymer |
Styrene content (%)
|
25 |
25 |
| Mooney viscosity, ML1+4,
100°C |
65 |
47 |
| Formulation
Mooney viscosity, ML1+4, 100°C |
76 |
57 |
| Hardness,
Shore A |
71 |
84 |
Tensile
properties, 23°C
|
100% tensile stress
(MPa) |
2.9 |
3.5 |
| 300% tensile stress
(MPa) |
9.3 |
8.9 |
| Tensile strength (MPa) |
14.8 |
13.4 |
| Elongation at break
(%) |
450 |
430 |
| Lupke rebound
resilience2 |
0°C (%) |
54.0 |
36.5 |
| 23°C (%) |
64.0 |
40.5 |
| 50°C (%) |
67.5 |
41.5 |
| Akron abrasion
(cc) |
0.186 |
0.189 |
| Goodrich
heat buildup, T (°C) |
37 |
Blow out |
| Compression
set, 70°C, 22 hr (%) |
30 |
56 |
| Payne effect,
G', 0°C (MPa) |
0.86 |
27.64 |
| Payne effect,
G', 50°C (MPa) |
0.53 |
17.72 |
|
1 Rubber (E20 or Asaprene™
1205)/silica/naphthenic oil/silane coupling agent (Degussa Si69)
= 100/40/5/2 wt parts.
2 Test method:
New JIS K 6255.
| Basic characteristics of typical
silica compound rubber formulations1 with Asaprene™ E20
and with Asaprene™ E20 masterbatch. |
| |
Alone |
NR blends |
#1502
blends |
| E20 |
100 |
50 |
— |
50 |
— |
| E20 masterbatch |
— |
— |
50 |
— |
50 |
| #1502 |
— |
— |
— |
50 |
50 |
| NR |
— |
50 |
50 |
— |
— |
| Formulation
Mooney viscosity, ML1+4, 100°C |
76 |
65 |
58 |
73 |
71 |
| Hardness,
Shore A |
71 |
69 |
64 |
71 |
69 |
| Tensile
properties, 23°C |
100% tensile
stress (MPa) |
2.9 |
2.5 |
2.3 |
2.6 |
2.6 |
| 300% tensile
stress (MPa) |
9.3 |
8.4 |
9.2 |
9.0 |
10.2 |
| Tensile
strength (MPa) |
14.8 |
22.6 |
21.4 |
18.8 |
21.4 |
| Elongation
at break (%) |
450 |
580 |
520 |
500 |
510 |
| Lupke
rebound resilience2 |
0°C
(%) |
54.0 |
48.0 |
52.5 |
36.5 |
43.0 |
| 23°C
(%) |
64.0 |
61.5 |
67.5 |
51.0 |
59.0 |
| 50°C
(%) |
67.5 |
67.0 |
72.0 |
60.0 |
66.0 |
| Akron abrasion
(cc) |
0.186 |
0.286 |
0.275 |
0.180 |
0.158 |
| Goodrich
heat buildup, T (°C) |
37 |
27 |
26 |
29 |
26 |
| Compression
set, 70°C, 22hr (%) |
30 |
21 |
20 |
15 |
13 |
| Payne effect,
G', 0°C (MPa) |
0.86 |
3.05 |
1.09 |
5.01 |
1.85 |
| Payne effect,
G', 50°C (MPa) |
0.53 |
1.68 |
0.85 |
2.42 |
0.71 |
|
1 Rubber(s)/silica/naphthenic oil/silane
coupling agent (Degussa Si69) = 100/40/5/2 wt parts.
2 Test method: New JIS K 6255.
Please note that all data and values are given
as typical results obtained with the indicated test methods for
purposes of basic reference in grade selection only, and not as
any product specification or warranty of any nature, and are subject
to change without notice.
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