NAMRUB 20 is a technically specified natural rubber with excellent processing characteristics and good physical properties. Its high green strength, tack and cohesive properties makes it an ideal choice in the manufacture of high performance passenger and truck tyres.The low viscosity and easier mixing characteristics of NAMRUB 20 reduces the mixing period considerably making it very cost effective. |
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| Dirt % wt. max. (mean + 35 D) | 0.16 | Compound Mooney Viscosity | ||
| Ash % wt. Max | 1.00 | Vc (ML 1 + 4 at 100° Celcius ) | 52.5 | |
| Nitrogen % wt.max | 0.6 | Mooney Scorch time (min to 5 unit rise | ||
| Volatile Matter % wt.max | 0.8 | above min at 120° Celcius) | 21.2 | |
| Acetone Extract % wt max | 5.0 | Monsanto rheometer at 140° Celcius | ||
| Copper Content max | 8 PPM | Optimum cure t90 (mins. ) | 26.8 | |
| Manganese Content max | 10 PPM | Cure rate, t90 - t2 (mins.) | 18.7 | |
| Po (Wallace Plasticity) Min | 30 | Scorch time t2 (mins.) | 8.1 | |
| PRI % min | 40 | |||
| Mooney Viscosity | 70-90 |
| Low rolling resistance | High performance passenger tyres | |
| Low heat generation | Heavy load bearing bias truck tyres | |
| Excellent traction for all season treads | Motorcycle and bicycle tyres | |
| High resitance to cutting, | Inner tubes, conveyer belts, hoses | |
| chipping and tearing | General rubber products |
Cure conditions : 28 min . at 140° C |
| HARDNESS, IRHD | 65 | AKRON ABRASION, mm3/500rev | 21 | |
| MODULUS AT 30%, MPa | 12 | GOODRICH HBU, deg C, 30min from 100 deg C | 7 |
| TENSILE STRENGTH, Mpa | 29 | DUNLOP resilience, % 23 dec C | 65 |
| COMPRESSION SET, 25%, 24b/70 C% | 18 |
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