12 SEPTON TM and HYBRAR TM �
4) HYBRAR™ - Polystyrene blends for damping performance
1
2
HYBRAR™ 5127
20
Polystyrene
100
80
Damping Properties Tan δ Loss Factor
0°C
0.033 0.035 0.037
0.049 0.115 0.094
25°C 40°C
Loss Factor (Degree of Damping)
0.016
0.068
Hardness (Type D)
83
74
Tensile Modulus
MPa
2600
1900
Tensile Strength
MPa
49
43
Elongation
%
13
17
Flexural Modulus
MPa
2600
1700
Flexural Strength
MPa
74
23
HYBRAR ™ Based Filler Compounds
20
10
HYBRAR™ 5127 HYBRAR™ 5127/polybutene=70/30 HYBRAR™ 5127/mica=30/70
Non HYBRAR™
-20
500
0
Time (10 -3 s) Control floor
20
1
With HYBRAR™
-20
500
0
Time (10 -3 s) Damped floor
Damping Properties
Mechnical Properties
Formulation
70 Tan δ at 0 °C 0.54 Tensile Strength (MPa)
HYBRAR™ 5127
3.6
Polybutene
30 25°C
0.73 Elongation (%)
90
0.1
EVA
20 40°C
0.51 Hardness (Type A)
89
Mica
150
Specific Gravity
1.83
Light Calcium Carbonate 150
Calcium Stearate
4
Carbon Black (GPF)
4
Test specimen: Control floor – two layer plywood (thickness = 2.4 mm & 5.3 mm) Damped floor – three layer plywood (thickness = 2.4 mm & 0.5 mm (Damping compound) & 5.3 mm) Test Method: Damped Oscillation Curve was measured by the resonance method with a cantilever beam at 26°C
0.01
-25
0
25
50
Temperature °C
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