Soft Compound-1 |
(Tested by KURARAY CO., LTD.)
Formulation(parts
by weight)
HYBRAR™ 5127
Atactic Polypropylene
Calcium Carbonate
Process Oil *1
Resin *2 |
100
40
110
80
150 |
| Properties |
| Density | g/cm3 |
| Tensile Strength | MPa |
| Elongation | % |
| Hardness | Shore A |
| Rebound | % |
|
1.1
0.5
920
3
16 |
|
| (1MPa=10.20 kgf/cm2) |
|
*1-Paraffin Oil PW-90;Idemitsu Kosan Co., Ltd.
*2-Hydrogenated Petroleum Resin ARKON P-100;Arakawa Chemical Industries, Ltd. |
| |
Mixing Condition:Kneader@130˚C 150˚C(Lower
Dump Temperature is desirable)
Molding Condition:Press Molding @ 100˚C
Blends of HYBRAR™ with ordinary styrenic soft compounds exhibit excellent vibration damping properties. |
 |
Soft Compound-2 |
(Tested by KURARAY CO., LTD.)
| | 1 | 2 | 3 |
Formulation
SEPTON 4055
HYBRAR™ 5127
Paraffin Oil
Polypropylene |
100
100
100
40 |
100
100
60
40 |
100
---
180
50 |
| Damping Propertiy |
| Rebound | % |
|
17 |
12 |
40 |
| Mechanical Property | |
| Tensile Modulus | MPa |
| Tensile Strength | MPa |
| Elongation | % |
| Hardness | Shore A |
| Compression Set | % |
| 25˚C,22 hours | |
| 70˚C,22 hours
| |
|
1.0
10.3
850
51
15
--- |
1.4
13.9
800
61
17
59 |
0.8
9.3
990
48
---
41 |
| Melt Index | |
| 230˚C,2.16kg | g/10min |
|
17 |
6 |
5 |
|
Mixing Condition:Twin Screw Extruder@210˚C
Molding Condition:Injection Molding,Cylinder@210˚C Mold@50˚C |
|
| |
 Foam |
|
