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Rubber
Materials
Natural
Rubber
Specialty
NR Grades
Synthetic
Rubber
Carbon
Black
Titanium Dioxide
Zinc
Oxide
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Standard Thai Rubber
(STR)
Specification Scheme
|
|
| |
TSR
CV |
|
TSR
5
|
|
|
| Parameter |
STR
5 CV
|
STR
XL
|
STR
5L
|
STR
5
|
STR
10
|
STR
10CV
|
STR
20
|
STR
20CV
|
|
Dirt (% wt, max)
|
0.04
|
0.02
|
0.04
|
0.04
|
0.08
|
0.08
|
0.16
|
0.16
|
|
Ash (% wt, max)
|
0.60
|
0.40
|
0.40
|
0.60
|
0.60
|
0.60
|
0.80
|
0.80
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Nitrogen (% wt,
max)
|
0.60
|
0.50
|
0.60
|
0.60
|
0.60
|
0.60
|
0.60
|
0.60
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|
Volatile Matter
(% wt, max)
|
0.80
|
0.80
|
0.80
|
0.80
|
0.80
|
0.80
|
0.80
|
0.80
|
| Initial
Plasticity (min) |
NA
|
35
|
35
|
30
|
30
|
NA
|
30
|
NA
|
| PRI index
(min) |
60
|
60
|
60
|
60
|
50
|
50
|
40
|
40
|
Colour
Lovibond Scale
(individual value, max) |
NA
|
4.0
|
6.0
|
NA
|
NA
|
NA
|
NA
|
NA
|
Mooney
Viscosity**
(ML, 1+4, 100°C) |
60
+7/-5
|
NA
|
NA
|
NA
|
NA
|
60
+7/-5*
|
NA
|
65
+7/-5*
|
*Not specification status, but
are controlled at the producer end.
**Note: Mooney Viscosity limits
at time of production. Values will drift higher over time.
These figures
are limits, not typical values. Typical values will vary
by producer.
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